1
|
Şekercioğlu ÇH, Fullwood MJ, Cerling T, Brenes FO, Daily GC, Ehrlich PR, Chamberlain P, Newsome SD. Using stable isotopes to measure the dietary responses of Costa Rican forest birds to agricultural countryside. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1086616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
How human modification of native habitats changes the feeding patterns and nutritional ecology of tropical birds is critical to conserving avian biodiversity, but tropical bird diets are laborious to investigate using the traditional methods of diet analysis. Stable isotope analysis provides a cost-effective and efficient proxy to identify general foraging patterns, especially when dietary shifts spanning multiple trophic levels have occurred due to ecosystem disturbance or transformation. To characterize the diets of forest bird species that persist in tropical agricultural countryside, we compared feather carbon (δ13C) and nitrogen (δ15N) isotope values of four species caught and radio-tracked in a 270 hectare forest reserve, smaller forest remnants (including mature forest, secondary forest, and riparian strips), and coffee plantations in mid-elevation (ca. 800–1,400 m) southern Costa Rica. Bird habitat choice had a significant effect on diet composition as revealed by δ13C and δ15N values. Three of the four species studied showed evidence of significantly reduced consumption of invertebrates in coffee plantations, with the isotope values of two species (Tangara icterocephala and Turdus assimilis) indicating, by comparison, nearly a doubling of invertebrate consumption in forest remnants. Our results suggest that coffee plantations are deficient in invertebrates preferred by forest generalist birds that forage in both native forest remnants and coffee plantations. In this region, typical of mountainous American tropics, small forest remnants and a larger forest reserve provide critical dietary resources for native forest birds that utilize the agricultural countryside.
Collapse
|
2
|
Potapov AM, Beaulieu F, Birkhofer K, Bluhm SL, Degtyarev MI, Devetter M, Goncharov AA, Gongalsky KB, Klarner B, Korobushkin DI, Liebke DF, Maraun M, Mc Donnell RJ, Pollierer MM, Schaefer I, Shrubovych J, Semenyuk II, Sendra A, Tuma J, Tůmová M, Vassilieva AB, Chen T, Geisen S, Schmidt O, Tiunov AV, Scheu S. Feeding habits and multifunctional classification of soil‐associated consumers from protists to vertebrates. Biol Rev Camb Philos Soc 2022; 97:1057-1117. [DOI: 10.1111/brv.12832] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 12/17/2022]
Affiliation(s)
- Anton M. Potapov
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Frédéric Beaulieu
- Canadian National Collection of Insects, Arachnids and Nematodes, Agriculture and Agri‐Food Canada Ottawa ON K1A 0C6 Canada
| | - Klaus Birkhofer
- Department of Ecology Brandenburg University of Technology Karl‐Wachsmann‐Allee 6 03046 Cottbus Germany
| | - Sarah L. Bluhm
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Maxim I. Degtyarev
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Miloslav Devetter
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
| | - Anton A. Goncharov
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Konstantin B. Gongalsky
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Bernhard Klarner
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Daniil I. Korobushkin
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Dana F. Liebke
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Mark Maraun
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Rory J. Mc Donnell
- Department of Crop and Soil Science Oregon State University Corvallis OR 97331 U.S.A
| | - Melanie M. Pollierer
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Ina Schaefer
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
| | - Julia Shrubovych
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
- Institute of Systematics and Evolution of Animals PAS Slawkowska 17 Pl 31‐016 Krakow Poland
- State Museum Natural History of NAS of Ukraine Teatralna 18 79008 Lviv Ukraine
| | - Irina I. Semenyuk
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
- Joint Russian‐Vietnamese Tropical Center №3 Street 3 Thang 2, Q10 Ho Chi Minh City Vietnam
| | - Alberto Sendra
- Colecciones Entomológicas Torres‐Sala, Servei de Patrimoni Històric, Ajuntament de València València Spain
- Departament de Didàctica de les Cièncias Experimentals i Socials, Facultat de Magisteri Universitat de València València Spain
| | - Jiri Tuma
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
- Biology Centre CAS, Institute of Entomology Branisovska 1160/31 370 05 Ceske Budejovice Czech Republic
| | - Michala Tůmová
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
| | - Anna B. Vassilieva
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Ting‐Wen Chen
- Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology Na Sádkách 702/7 37005 České Budějovice Czech Republic
| | - Stefan Geisen
- Department of Nematology Wageningen University & Research 6700ES Wageningen The Netherlands
| | - Olaf Schmidt
- UCD School of Agriculture and Food Science University College Dublin Belfield Dublin 4 Ireland
| | - Alexei V. Tiunov
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
| | - Stefan Scheu
- J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
- Centre of Biodiversity and Sustainable Land Use Büsgenweg 1 37077 Göttingen Germany
| |
Collapse
|
3
|
Li SH, Liu Y, Yeh CF, Fu Y, Yeung CKL, Lee CC, Chiu CC, Kuo TH, Chan FT, Chen YC, Ko WY, Yao CT. Not out of the woods yet: Signatures of the prolonged negative genetic consequences of a population bottleneck in a rapidly re-expanding wader, the black-faced spoonbill Platalea minor. Mol Ecol 2021; 31:529-545. [PMID: 34726290 DOI: 10.1111/mec.16260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/27/2021] [Accepted: 10/20/2021] [Indexed: 11/30/2022]
Abstract
The long-term persistence of a population which has suffered a bottleneck partly depends on how historical demographic dynamics impacted its genetic diversity and the accumulation of deleterious mutations. Here we provide genomic evidence for the genetic effect of a recent population bottleneck in the endangered black-faced spoonbill (Platalea minor) after its rapid population recovery. Our data suggest that the bird's effective population size, Ne , had been relatively stable (7500-9000) since 22,000 years ago; however, a recent brief yet severe bottleneck (Ne = 20) which we here estimated to occur around the 1940s wiped out >99% of its historical Ne in roughly three generations. Despite a >15-fold population recovery since 1988, we found that black-faced spoonbill population has higher levels of inbreeding (7.4 times more runs of homozygosity) than its sister species, the royal spoonbill (P. regia), which is not thought to have undergone a marked population contraction. Although the two spoonbills have similar levels of genome-wide genetic diversity, our results suggest that selection on more genes was relaxed in the black-faced spoonbill; moreover individual black-faced spoonbills carry more putatively deleterious mutations (Grantham's score > 50), and may therefore express more deleterious phenotypic effects than royal spoonbills. Here we demonstrate the value of using genomic indices to monitor levels of genetic erosion, inbreeding and mutation load in species with conservation concerns. To mitigate the prolonged negative genetic effect of a population bottleneck, we recommend that all possible measures should be employed to maintain population growth of a threatened species.
Collapse
Affiliation(s)
- Shou-Hsien Li
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Yang Liu
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-Sen University, Guangzhou, China
| | - Chia-Fen Yeh
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Yuchen Fu
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | | | - Chun-Cheng Lee
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Chi-Cheng Chiu
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | | | - Fang-Tse Chan
- Division of Zoology, Taiwan Endemic Species Research Institute, Nantou, Taiwan
| | - Yu-Chia Chen
- Department of Life Sciences, National Yanming Medical University, Taipei, Taiwan
| | - Wen-Ya Ko
- Department of Life Sciences, National Yanming Medical University, Taipei, Taiwan
| | - Cheng-Te Yao
- High Altitude Research Station, Taiwan Endemic Species Research Institute, Nantou, Taiwan
| |
Collapse
|
4
|
Multidimensional natal isotopic niches reflect migratory patterns in birds. Sci Rep 2021; 11:20800. [PMID: 34675313 PMCID: PMC8531022 DOI: 10.1038/s41598-021-00373-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 10/05/2021] [Indexed: 12/04/2022] Open
Abstract
Naturally occurring stable isotope ratios in animal tissues allow estimation of species trophic position and ecological niche. Measuring multiple isotopes of migratory species along flyway bottlenecks offers the opportunity to sample multiple populations and species whose tissues carry information at continental scales. We measured δ2H, δ18O, δ13C, δ15N in juvenile feathers of 21 bird species captured at a migratory bottleneck in the Italian Alps. We examined if trends in individual isotopes reflected known migratory strategies and whether dietary (δ13C–δ15N) and spatially-explicit breeding origin (δ2H–δ18O) niche breadth (NB) differed among long-distance trans-Saharan (TS), short-distance (IP) and irruptive (IR) intra-Palearctic migrants, and whether they correlated with reported populations long-term trends. In both TS and IP groups, species δ2H declined with capture date, indicating that northern populations reached the stopover site later in the season, following a Type-I migration strategy. Values of δ2H indicated that breeding range of TS migrants extended farther north than IP and IR migrants. The breeding season was longer for IP migrants whose δ13C and δ15N values declined and increased, respectively, with time of capture. Average species dietary NB did not differ among migratory groups, but TS migrants displayed wider breeding origin niches, suggesting that long-distant migration is linked to broader ecological niches. Isotope origin NB well reflected species geographic range extent, while dietary NB did not correlate with literature accounts of species’ diet. We found no relationship between species breeding NB and population trends in Europe, suggesting that conditions in the breeding grounds, as inferred by stable isotopes, are not the only determinant of species’ long-term persistence. We demonstrate that ringing activities and isotopic measurements of passerines migrating through a bottleneck represents a unique opportunity to investigate large-scale life-history phenomena relevant to conservation.
Collapse
|
5
|
Morra KE, Newsome SD, Graves GR, Fogel ML. Physiology Drives Reworking of Amino Acid δ2H and δ13C in Butterfly Tissues. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.729258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Studies of animal movement and migration over large geospatial scales have long relied on natural continental-scale hydrogen isotope (δ2H) gradients in precipitation, yet the physiological processes that govern incorporation of δ2H from precipitation into plant and then herbivore tissues remain poorly understood, especially at the molecular level. Establishing a biochemical framework for the propagation of δ2H through food webs would enable us to resolve more complicated regional-scale animal movements and potentially unlock new applications for δ2H data in animal ecology and eco-physiology. Amino acid δ2H analysis offers a promising new avenue by which to establish this framework. We report bulk tissue δ2H, δ13C, and δ15N data as well as amino acid δ2H and δ13C data from three Pipevine swallowtail (Battus philenor) tissues—caterpillars, butterfly bodies, and wings—as well as their obligate plant source: pipevine leaves (Aristolochia macrophylla). Insects are often dominant herbivores in terrestrial food webs and a major food source for many higher-level consumers, so it is particularly important to understand the mechanisms that influence insect tissue δ2H values. Our data reveal extensive δ2H variation within and among individuals of a relatively simple plant-herbivore system that cannot be explained by temporal or geospatial gradients of precipitation δ2H or dietary differences. Variations in essential amino acid δ2H and δ13C indicate that B. philenor acquire these compounds from an additional source that is isotopically distinct from pipevine leaves, potentially gut microbes. We also found multiple isotopic carryover effects associated with metamorphosis. This study emphasizes the strong influence of physiology on consumer-diet δ2H discrimination in a local population of pipevines and swallowtails and provides a template that can be broadly applied to Lepidoptera—the second most diverse insect order—and other holometabolous insects. Understanding these physiological mechanisms is critical to interpreting the large degree of δ2H variation in consumer tissues often observed at a single collection site, which has implications for using δ2H isoscapes to study animal movement. Further investigation into amino acid δ2H holds promise to elucidate how subsets of amino acids may be best utilized to address specific ecological and physiological questions for which bulk tissue δ2H is insufficient.
Collapse
|
6
|
Singh D, Reed SM, Kimmitt AA, Alford KA, Stricker CA, Polly PD, Ketterson ED. Breeding at higher latitude is associated with higher photoperiodic threshold and delayed reproductive development in a songbird. Horm Behav 2021; 128:104907. [PMID: 33259797 DOI: 10.1016/j.yhbeh.2020.104907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 11/20/2020] [Accepted: 11/21/2020] [Indexed: 11/26/2022]
Abstract
Many seasonally breeding animals exhibit a threshold day length (critical photoperiod; CPP) for gonadal growth, and populations breeding at higher latitudes typically have a higher CPP. Much less is known about latitudinal variation in CPP in migratory population that winter away from their breeding range and must time their reproduction to match favorable conditions at their destination. To address the relationship between migration, breeding latitude, and CPP, we held two closely related songbird populations in a common environment. One population is resident (Junco hyemalis carolinensis), the other winters in sympatry with the residents but migrates north to breed (Junco hyemalis hyemalis). We gradually increased photoperiod and measured indices of readiness to migrate (fat score, body mass) and breed (cloacal protuberance volume, baseline testosterone, and gonadotropin releasing hormone challenged testosterone). To estimate breeding latitude, we measured hydrogen isotopes in feathers grown the preceding year. As we predicted, we found a higher CPP in migrants than residents, and a higher CPP among migrants deriving from higher as opposed to lower latitudes. Migrants also terminated breeding earlier than residents, indicating a shorter breeding season. To our knowledge, this is a first demonstration of latitudinal variation in CPP-dependent reproductive timing in bird populations that co-exist in the non-breeding season but breed at different latitudes. We conclude that bird populations appear to exhibit local adaptation in reproductive timing by relying on differential CPP response that is predictive of future conditions on the breeding ground.
Collapse
Affiliation(s)
- D Singh
- Biology Department, Indiana University, Bloomington, IN 47401, USA; Environmental Resilience Institute, Indiana University, Bloomington, IN 47401, USA.
| | - S M Reed
- Biology Department, Indiana University, Bloomington, IN 47401, USA
| | - A A Kimmitt
- Biology Department, Indiana University, Bloomington, IN 47401, USA
| | - K A Alford
- Biology Department, Indiana University, Bloomington, IN 47401, USA
| | - C A Stricker
- U.S. Geological Survey, Fort Collins Science Center, Denver, CO 80225, USA
| | - P D Polly
- Environmental Resilience Institute, Indiana University, Bloomington, IN 47401, USA; Department of Geological Sciences, Indiana University, Bloomington, IN 47401, USA
| | - E D Ketterson
- Biology Department, Indiana University, Bloomington, IN 47401, USA; Environmental Resilience Institute, Indiana University, Bloomington, IN 47401, USA.
| |
Collapse
|
7
|
Wommack EA, Marrack LC, Mambelli S, Hull JM, Dawson TE. Using oxygen and hydrogen stable isotopes to track the migratory movement of Sharp-shinned Hawks (Accipiter striatus) along Western Flyways of North America. PLoS One 2020; 15:e0226318. [PMID: 33201878 PMCID: PMC7671529 DOI: 10.1371/journal.pone.0226318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 10/30/2020] [Indexed: 11/18/2022] Open
Abstract
The large-scale patterns of movement for the Sharp-shinned Hawk (Accipiter striatus), a small forest hawk found throughout western North America, are largely unknown. However, based on field observations we set out to test the hypothesis that juvenile migratory A. striatus caught along two distinct migration routes on opposite sides of the Sierra Nevada Mountains of North America (Pacific Coast and Intermountain Migratory Flyways) come from geographically different natal populations. We applied stable isotope analysis of hydrogen (H) and oxygen (O) of feathers, and large scale models of spatial isotopic variation (isoscapes) to formulate spatially explicit predictions of the origin of the migrant birds. Novel relationships were assessed between the measured hydrogen and oxygen isotope values of feathers from A. striatus museum specimens of known origin and the isoscape modeled hydrogen and oxygen isotope values of precipitation at those known locations. We used these relationships to predict the origin regions for birds migrating along the two flyways from the measured isotope values of migrant’s feathers and the associated hydrogen and oxygen isotopic composition of precipitation where these feathers were formed. The birds from the two migration routes had overlap in their natal/breeding origins and did not differentiate into fully separate migratory populations, with birds from the Pacific Coast Migratory Flyway showing broader natal geographic origins than those from the Intermountain Flyway. The methodology based on oxygen isotopes had, in general, less predictive power than the one based on hydrogen. There was broad agreement between the two isotope approaches in the geographic assignment of the origins of birds migrating along the Pacific Coast Flyway, but not for those migrating along the Intermountain Migratory Flyway. These results are discussed in terms of their implications for conservation efforts of A. striatus in western North America, and the use of combined hydrogen and oxygen stable isotope analysis to track the movement of birds of prey on continental scales.
Collapse
Affiliation(s)
- Elizabeth A. Wommack
- Department of Zoology & Physiology, University of Wyoming Museum of Vertebrates, University of Wyoming, Laramie, Wyoming, United States of America
- Golden Gate Raptor Observatory, Sausalito, California, United States of America
- Department of Integrative Biology, University of California, Berkeley, California, United States of America
- * E-mail:
| | - Lisa C. Marrack
- Department of Environmental Science, Policy & Management, University of California, Berkeley, California, United States of America
| | - Stefania Mambelli
- Department of Integrative Biology, University of California, Berkeley, California, United States of America
- Center for Stable Isotope Biogeochemistry, University of California, Berkeley, California, United States of America
| | - Joshua M. Hull
- Golden Gate Raptor Observatory, Sausalito, California, United States of America
- Department of Animal Science, University of California, Davis, California, United States of America
| | - Todd E. Dawson
- Department of Integrative Biology, University of California, Berkeley, California, United States of America
- Department of Environmental Science, Policy & Management, University of California, Berkeley, California, United States of America
- Center for Stable Isotope Biogeochemistry, University of California, Berkeley, California, United States of America
| |
Collapse
|
8
|
Mediterranean precipitation isoscape preserved in bone collagen δ 2H. Sci Rep 2020; 10:8579. [PMID: 32444789 PMCID: PMC7244594 DOI: 10.1038/s41598-020-65407-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 05/04/2020] [Indexed: 11/08/2022] Open
Abstract
The prehistory of the Mediterranean region has long been a subject of considerable interest, particularly the links between human groups and regions of origin. We utilize the spatial variation in the δ2H and δ18O values of precipitation (isoscapes) to develop proxies for geographic locations of fauna and humans. Bone collagen hydrogen isotope ratios (δ2H) in cattle (and to a lesser extent, ovicaprids) across the Mediterranean reflect the isotopic differences observed in rainfall (but δ18O values do not). We conclude that δ2H in herbivore bone collagen can be used as a geolocation tracer and for palaeoenvironmental studies such as tracing past isotopic variations in the global hydrological cycle. In contrast, human bone δ2H values are relatively tightly grouped and highly distinct from precipitation δ2H values, likely due to human-specific food practices and environmental modifications. Given the inter-species variability in δ2H, care should be taken in the species selected for study.
Collapse
|
9
|
Mechanistic model predicts tissue–environment relationships and trophic shifts in animal hydrogen and oxygen isotope ratios. Oecologia 2019; 191:777-789. [DOI: 10.1007/s00442-019-04532-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 10/04/2019] [Indexed: 10/25/2022]
|
10
|
Kravchenko KA, Lehnert LS, Vlaschenko AS, Voigt CC. Multiple isotope tracers in fur keratin discriminate between mothers and offspring. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33:907-913. [PMID: 30786112 DOI: 10.1002/rcm.8417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE Isoscape origin models for mammals may be impaired by fractionation and routing of isotopes during lactation. Here, we tested if the stable carbon, nitrogen and hydrogen ratios of juvenile bats differ from those of their mothers and if derived isotopic dietary niches and geographical assignments vary accordingly between mothers and juveniles. METHODS During the post-lactation period, we collected fur of juvenile and female common noctule bats (Nyctalus noctula) from the same maternity roost. Using a combination of elemental analysis and stable isotope ratio mass spectrometry, we measured the hydrogen, carbon and nitrogen isotope ratios in fur keratin. The hydrogen isotope ratios were measured for the non-exchangeable portion of hydrogen in keratin. The derived isotopic niches and isoscape origin models were compared between mothers and juveniles. RESULTS The fur keratin of juveniles was enriched by 1.6‰ in 15 N and depleted by 2.9‰ in 13 C compared with that of the mothers. In addition, the hydrogen isotope ratios were 13.4‰ lower in the fur keratin of juveniles than in that of mothers. The estimated isotopic niches of nursing females and juveniles were not overlapping and differed in size. Overall, the isoscape origin models projected juveniles as being from a more northern origin than the mothers; yet both models suggested the study site as a likely place of origin. CONCLUSIONS Our results suggest that isotope ratio data of juvenile bats should not be used for transfer functions in isoscape origin models because of isotopic routing and discrimination during lactation. Not accounting for age effects may increase the inaccuracy of geographical assignments in mammals when based on stable hydrogen isotopes.
Collapse
Affiliation(s)
- Kseniia A Kravchenko
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, 10315, Berlin, Germany
- Institute for Biology, Freie Universität Berlin, Königin-Luise-Str. 1-3, 14195, Berlin, Germany
| | - Linn S Lehnert
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, 10315, Berlin, Germany
- Institute for Biology, Freie Universität Berlin, Königin-Luise-Str. 1-3, 14195, Berlin, Germany
| | - Anton S Vlaschenko
- Bat Rehabilitation Center of Feldman Ecopark, 62340, Lisne, Kharkiv Region, Ukraine
- Ukrainian Independent Ecology Institute, 61001, Kharkiv, Ukraine
| | - Christian C Voigt
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, 10315, Berlin, Germany
- Institute for Biology, Freie Universität Berlin, Königin-Luise-Str. 1-3, 14195, Berlin, Germany
| |
Collapse
|
11
|
The Importance of Isotopic Turnover for Understanding Key Aspects of Animal Ecology and Nutrition. DIVERSITY-BASEL 2019. [DOI: 10.3390/d11050084] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Stable isotope-based methods have proved to be immensely valuable for ecological studies ranging in focus from animal movements to species interactions and community structure. Nevertheless, the use of these methods is dependent on assumptions about the incorporation and turnover of isotopes within animal tissues, which are oftentimes not explicitly acknowledged and vetted. Thus, the purpose of this review is to provide an overview of the estimation of stable isotope turnover rates in animals, and to highlight the importance of these estimates for ecological studies in terrestrial, freshwater, and marine systems that may use a wide range of stable isotopes. Specifically, we discuss 1) the factors that contribute to variation in turnover among individuals and across species, which influences the use of stable isotopes for diet reconstructions, 2) the differences in turnover among tissues that underlie so-called ‘isotopic clocks’, which are used to estimate the timing of dietary shifts, and 3) the use of turnover rates to estimate nutritional requirements and reconstruct histories of nutritional stress from tissue isotope signatures. As we discuss these topics, we highlight recent works that have effectively used estimates of turnover to design and execute informative ecological studies. Our concluding remarks suggest several steps that will improve our understanding of isotopic turnover and support its integration into a wider range of ecological studies.
Collapse
|
12
|
Anderson CM, Gilchrist HG, Ronconi RA, Shlepr KR, Clark DE, Weseloh DVC, Roberston GJ, Mallory ML. Winter home range and habitat selection differs among breeding populations of herring gulls in eastern North America. MOVEMENT ECOLOGY 2019; 7:8. [PMID: 30891245 PMCID: PMC6404351 DOI: 10.1186/s40462-019-0152-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 02/07/2019] [Indexed: 06/02/2023]
Abstract
BACKGROUND Recognizing the factors influencing migratory individuals throughout their annual cycle is important for understanding the drivers of population dynamics. Previous studies have found that Herring Gulls (Larus argentatus) in the Atlantic region have lower survival rates than those in the Great Lakes and the Arctic. One possible explanation for divergent survival rates among these populations is differences in their non-breeding habitats. METHODS We tracked Herring Gulls from five populations, breeding in the eastern Arctic, the Great Lakes, Newfoundland, Sable Island, and the Bay of Fundy. We assessed the extent of migratory connectivity between breeding and wintering sites, and tested if there were differences in home range size or habitat selection among these populations during the winter. RESULTS The tracked Herring Gulls had strong migratory connectivity between their breeding and wintering areas. We found that Herring Gulls from the Arctic spent most of the winter in marine habitats, while the other populations used a wider variety of habitats. However, the Newfoundland and Sable Island populations selected for urban habitats, and almost all individuals the specialized in urban habitats came from one of the three Atlantic populations. CONCLUSIONS Our results suggest that there could potentially be a link between urban habitat use during the winter and reduced adult survival in Atlantic Canada Herring Gulls.
Collapse
Affiliation(s)
- Christine M. Anderson
- Department of Biology, Acadia University, 33 Westwood Ave, Wolfville, NS B4P 2R6 Canada
| | - H. Grant Gilchrist
- Wildlife Research Division, Environment and Climate Change Canada, National Wildlife Research Centre, Ottawa, ON K1S 5B6 Canada
| | - Robert A. Ronconi
- Canadian Wildlife Service, Environment and Climate Change Canada, 45 Alderney Dr, Dartmouth, NS B2Y 2N6 Canada
| | - Katherine R. Shlepr
- Atlantic Lab for Avian Research, Department of Biology, University of New Brunswick, P.O. Box 4400, 10 Bailey Drive, Fredericton, NB E3B 5A3 Canada
| | - Daniel E. Clark
- Massachusetts Department of Conservation and Recreation, Division of Water Supply Protection, 485 Ware Road, Belchertown, MA 01007 USA
| | - D. V. Chip Weseloh
- Canadian Wildlife Service, Environment and Climate Change Canada, 4905 Dufferin Ave, Toronto, ON M3H 5T4 Canada
| | - Gregory J. Roberston
- Wildlife Research Division, Environment and Climate Change Canada, 6 Bruce Street, Mount Pearl, NL A1N 4T3 Canada
| | - Mark L. Mallory
- Department of Biology, Acadia University, 33 Westwood Ave, Wolfville, NS B4P 2R6 Canada
| |
Collapse
|
13
|
Winger BM, Auteri GG, Pegan TM, Weeks BC. A long winter for the Red Queen: rethinking the evolution of seasonal migration. Biol Rev Camb Philos Soc 2018; 94:737-752. [PMID: 30393938 DOI: 10.1111/brv.12476] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 10/02/2018] [Accepted: 10/08/2018] [Indexed: 12/27/2022]
Abstract
This paper advances an hypothesis that the primary adaptive driver of seasonal migration is maintenance of site fidelity to familiar breeding locations. We argue that seasonal migration is therefore principally an adaptation for geographic persistence when confronted with seasonality - analogous to hibernation, freeze tolerance, or other organismal adaptations to cyclically fluctuating environments. These ideas stand in contrast to traditional views that bird migration evolved as an adaptive dispersal strategy for exploiting new breeding areas and avoiding competitors. Our synthesis is supported by a large body of research on avian breeding biology that demonstrates the reproductive benefits of breeding-site fidelity. Conceptualizing migration as an adaptation for persistence places new emphasis on understanding the evolutionary trade-offs between migratory behaviour and other adaptations to fluctuating environments both within and across species. Seasonality-induced departures from breeding areas, coupled with the reproductive benefits of maintaining breeding-site fidelity, also provide a mechanism for explaining the evolution of migration that is agnostic to the geographic origin of migratory lineages (i.e. temperate or tropical). Thus, our framework reconciles much of the conflict in previous research on the historical biogeography of migratory species. Although migratory behaviour and geographic range change fluidly and rapidly in many populations, we argue that the loss of plasticity for migration via canalization is an overlooked aspect of the evolutionary dynamics of migration and helps explain the idiosyncratic distributions and migratory routes of long-distance migrants. Our synthesis, which revolves around the insight that migratory organisms travel long distances simply to stay in the same place, provides a necessary evolutionary context for understanding historical biogeographic patterns in migratory lineages as well as the ecological dynamics of migratory connectivity between breeding and non-breeding locations.
Collapse
Affiliation(s)
- Benjamin M Winger
- Museum of Zoology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, U.S.A
| | - Giorgia G Auteri
- Museum of Zoology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, U.S.A
| | - Teresa M Pegan
- Museum of Zoology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, U.S.A
| | - Brian C Weeks
- Museum of Zoology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, U.S.A
| |
Collapse
|
14
|
Roberts A, Silverman E, Gifford S. Sample size considerations for satellite telemetry and animal distributions. J Wildl Manage 2018. [DOI: 10.1002/jwmg.21504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Anthony Roberts
- Division of Migratory Bird Management; U.S. Fish and Wildlife Service; Laurel MD 20708 USA
| | - Emily Silverman
- Division of Migratory Bird Management; U.S. Fish and Wildlife Service; Laurel MD 20708 USA
| | | |
Collapse
|
15
|
Stable hydrogen isotope variability within and among plumage tracts (δ2HF) of a migratory wood warbler. PLoS One 2018; 13:e0193486. [PMID: 29614120 PMCID: PMC5882105 DOI: 10.1371/journal.pone.0193486] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 02/12/2018] [Indexed: 11/30/2022] Open
Abstract
Hydrogen isotope analysis of feather keratin (δ2HF) has become an essential tool for tracking movements between breeding and wintering populations of migratory birds. In particular, δ2HF has been used to create δ2HF isoscapes that can be used to assign the geographic origins of molt. The majority of past studies have sampled a portion of a single feather as an isotopic proxy for the entire plumage although surprisingly little is known about variation of stable isotopes within and between feather tracts of individuals in local populations. Here we examine δ2HF variation in 24 pterylographic variables (9 primaries, 6 secondaries, 6 rectrices, and 3 patches of ventral contour feathers) in individual specimens of black-throated blue warbler (Setophaga caerulescens) breeding in the Big Santeetlah Creek watershed (5350 ha), southern Appalachian Mountains. By restricting our study to territorial ASY males (after second year) inhabiting a small watershed, we could focus on δ2HF variation generated during the complete prebasic annual molt in a circumscribed population while factoring out age and sexual differences in foraging behavior, isotopic incorporation, and post-breeding dispersal. Summed within-individual variation (δ2HF) across 24 pterylographic variables ranged from 12 to 60‰ (= 21.8 ± 9.4‰), with 81% of the individuals exhibiting variation ≥ 16‰ (reproducibility of analyses was ≤ 4 ‰). Adjacent feathers in feather tracts tend to have more similar δ2HF values than feathers grown weeks apart, consistent with the stepwise replacement of flight feathers. The pooled population sample exhibited significant δ2HF variation in primaries (-78 to -21‰), secondaries (-80 to -17‰), rectrices (-78 to -23‰), and ventral contour feathers (-92 to -32‰). Strong year effects in δ2HF variation were observed in each of the 24 pterylographic variables. Altitudinal effects were observed only in ventral contour feathers. The current findings demonstrate that within-individual variation (δ2HF) may be much greater than previously thought in migratory species that molt on or near breeding territories. Our study also highlights the need for greater pterylographic precision in research design of isotope-based studies of avian movement. Within-individual and within-population δ2HF variation should be incorporated in geographic assignment models. In a broader context, the staggered Staffelmauser pattern of molt in wood warblers provides an exceptional view of the seasonal variation of hydrogen isotopes circulating in blood plasma during the six-week period of annual molt.
Collapse
|
16
|
Identifying migratory birds' population bottlenecks in time and space. Proc Natl Acad Sci U S A 2018; 115:3515-3517. [PMID: 29563228 DOI: 10.1073/pnas.1802174115] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
17
|
Ruegg KC, Anderson EC, Harrigan RJ, Paxton KL, Kelly JF, Moore F, Smith TB. Genetic assignment with isotopes and habitat suitability (
gaiah
), a migratory bird case study. Methods Ecol Evol 2017. [DOI: 10.1111/2041-210x.12800] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kristen C. Ruegg
- Center for Tropical Research, Institute of the Environment and Sustainability University of California, Los Angeles Los Angeles CA 90095‐1496 USA
- Department of Ecology and Evolutionary Biology University of California Santa Cruz CA 95064 USA
| | - Eric C. Anderson
- Fisheries Ecology Division, Southwest Fisheries Science Center National Marine Fisheries Service, NOAA Santa Cruz CA 95060 USA
| | - Ryan J. Harrigan
- Center for Tropical Research, Institute of the Environment and Sustainability University of California, Los Angeles Los Angeles CA 90095‐1496 USA
| | | | - Jeffrey F. Kelly
- Oklahoma Biological Survey University of Oklahoma Norman OK 73019 USA
- Department of Biology University of Oklahoma Norman OK 73019 USA
| | - Frank Moore
- Department of Biological Sciences University of Southern Mississippi Hattiesburg MS 39406 USA
| | - Thomas B. Smith
- Center for Tropical Research, Institute of the Environment and Sustainability University of California, Los Angeles Los Angeles CA 90095‐1496 USA
- Department of Ecology and Evolutionary Biology University of California Los Angles CA 90095 USA
| |
Collapse
|
18
|
Culp LA, Cohen EB, Scarpignato AL, Thogmartin WE, Marra PP. Full annual cycle climate change vulnerability assessment for migratory birds. Ecosphere 2017. [DOI: 10.1002/ecs2.1565] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Leah A. Culp
- Migratory Bird Center; Smithsonian Conservation Biology Institute; National Zoological Park; P.O. Box 37012 MRC 5503 Washington D.C. 20013 USA
| | - Emily B. Cohen
- Migratory Bird Center; Smithsonian Conservation Biology Institute; National Zoological Park; P.O. Box 37012 MRC 5503 Washington D.C. 20013 USA
| | - Amy L. Scarpignato
- Migratory Bird Center; Smithsonian Conservation Biology Institute; National Zoological Park; P.O. Box 37012 MRC 5503 Washington D.C. 20013 USA
| | - Wayne E. Thogmartin
- U.S. Geological Survey; Upper Midwest Environmental Sciences Center; 2630 Fanta Reed Road La Crosse Wisconsin 54603 USA
| | - Peter P. Marra
- Migratory Bird Center; Smithsonian Conservation Biology Institute; National Zoological Park; P.O. Box 37012 MRC 5503 Washington D.C. 20013 USA
| |
Collapse
|
19
|
Weppelmann TA, Burne A, von Fricken ME, Elbadry MA, Beau De Rochars M, Boncy J, Okech BA. A Tale of Two Flaviviruses: A Seroepidemiological Study of Dengue Virus and West Nile Virus Transmission in the Ouest and Sud-Est Departments of Haiti. Am J Trop Med Hyg 2016; 96:135-140. [PMID: 27879463 DOI: 10.4269/ajtmh.16-0422] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 08/12/2016] [Indexed: 11/07/2022] Open
Abstract
Though plans to eliminate malaria from the island of Hispaniola have recently received much attention, arbovirus surveillance continues to be largely neglected in Haiti. To support surveillance efforts and encourage vector-control strategies, a cross-sectional study of dengue virus (DENV) and West Nile virus (WNV) transmission was conducted using standard seroepidemiological methods. Blood samples (N = 673) were collected from 278 males and 395 females from three locations in the Ouest and Sud-Est Departments of Haiti. Serum was separated and tested for the presence of anti-DENV and anti-WNV immunoglobulin G (IgG) antibodies using an indirect enzyme-linked immunosorbent assay (ELISA). Anti-DENV IgG antibodies were detected in 72.1% (95% confidence interval [CI] = 68.7, 75.5) of the sample population; with no significant differences in seroprevalence by study location, participant gender, or age group (P > 0.1, in all tests). Anti-WNV IgG antibodies were detected in only 1% (95% CI = 0.3, 1.8) of the sample population, all which originated from participants located in Gressier. The high prevalence of anti-DENV IgG antibodies among all age groups, including those in the youngest age group (2-5 years of age), suggests hyperendemic transmission of DENV in the Ouest and Sud-Est Departments of Haiti. In contrast, the relative absence of anti-WNV IgG antibodies, even among older population members, further supports the notion that WNV transmission in this population is largely absent. These findings highlight the large burden of disease from DENV and the need for enhanced arbovirus surveillance and implementation of vector control strategies throughout Haiti.
Collapse
Affiliation(s)
- Thomas A Weppelmann
- Herbert Wertheim College of Medicine, Florida International University, Miami, Florida.,Emerging Pathogens Institute, University of Florida, Gainesville, Florida
| | - Alexandra Burne
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida.,Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Florida
| | - Michael E von Fricken
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida.,Department of Global and Community Health, College of Health and Human Services, George Mason University, Fairfax, Virginia
| | - Maha A Elbadry
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida.,Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, Florida
| | - Madsen Beau De Rochars
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida.,Department of Health Services, Research, Management, and Policy, College of Public Health and Health Professions, University of Florida, Gainesville, Florida
| | - Jacques Boncy
- Department of Global and Community Health, College of Health and Human Services, George Mason University, Fairfax, Virginia.,Laboratoire National de Santé Publique (LNSP), Ministère de la Santé et de la Population (MSPP), Port au Prince, Haiti
| | - Bernard A Okech
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida. .,Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, Florida
| |
Collapse
|
20
|
González-Prieto AM, Bayly NJ, Colorado GJ, Hobson KA. Topography of the Andes Mountains shapes the wintering distribution of a migratory bird. DIVERS DISTRIB 2016. [DOI: 10.1111/ddi.12515] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
- Ana M. González-Prieto
- Department of Biology; University of Saskatchewan; 112 Science Place Saskatoon SK S7N 5E2 Canada
- SELVA: Investigación para la Conservación en el Neotrópico; Bogotá Colombia
| | - Nicholas J. Bayly
- SELVA: Investigación para la Conservación en el Neotrópico; Bogotá Colombia
| | - Gabriel J. Colorado
- Universidad Nacional de Colombia sede Amazonia; km 2 vía Tarapacá Leticia Colombia
| | - Keith A. Hobson
- Department of Biology; University of Saskatchewan; 112 Science Place Saskatoon SK S7N 5E2 Canada
- Environment Canada; 11 Innovation Boulevard Saskatoon SK S7N 5H5 Canada
- Department of Biology; University of Western Ontario; 1151 Richmond St. N London ON N6A 5B7 Canada
| |
Collapse
|
21
|
Maggini I, Metzger B, Voss M, Voigt CC, Bairlein F. Morphometrics and stable isotopes differentiate wintering populations of a migratory bird. MOVEMENT ECOLOGY 2016; 4:20. [PMID: 27486515 PMCID: PMC4970205 DOI: 10.1186/s40462-016-0085-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Describing migratory connectivity in mobile animals is crucial for understanding the selective pressures acting on different populations throughout their life cycle. Tracking single individuals has provided valuable data, but for most species the data available are still spurious and usually limited to a few individuals. Since different populations of migratory birds can be distinguished by a combination of morphometric measurements and the isotopic composition of their feathers, it is possible to measure these parameters on a large sample to differentiate populations. METHODS We studied northern wheatears, Oenanthe oenanthe, captured in their African wintering range and applied discriminant analyses on morphometric measurements and stable isotope signatures to determine whether birds found in different areas were distinguishable from each other. RESULTS Morphometric and isotopic measurements alone were not sufficient to discriminate between the birds of ssp. oenanthe from different areas in Africa. When combining the two measurements, however, assignment to the different groups became substantially more accurate. Following the discriminant analysis of morphometrics and δ(2)H, δ(13)C, and δ(15)N isotopes signatures, 19 of 20 oenanthe from Kenya, 15 of 20 oenanthe from Mali/Mauritania, and 19 of 20 oenanthe from Niger were assigned correctly to their wintering area. CONCLUSIONS Our results show that birds at different wintering sites can be distinguished from each other when using a combination of markers. We discuss the possible breeding origins of these wintering birds.
Collapse
Affiliation(s)
- Ivan Maggini
- Institute of Avian Research “Vogelwarte Helgoland”, Wilhelmshaven, Germany
- Konrad-Lorenz Institute of Ethology, University of Veterinary Medicine, Vienna, Austria
| | - Benjamin Metzger
- Institute of Avian Research “Vogelwarte Helgoland”, Wilhelmshaven, Germany
- BirdLife Malta, Xemxija, Malta
| | - Maren Voss
- Leibniz-Institute of Baltic Sea Research Warnemünde, IOW, Rostock, Germany
| | | | - Franz Bairlein
- Institute of Avian Research “Vogelwarte Helgoland”, Wilhelmshaven, Germany
| |
Collapse
|
22
|
Pérez‐Moreno H, Martínez‐Meyer E, Soberón Mainero J, Rojas‐Soto O. Climatic patterns in the establishment of wintering areas by North American migratory birds. Ecol Evol 2016; 6:2022-33. [PMID: 27099707 PMCID: PMC4831436 DOI: 10.1002/ece3.1973] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 12/17/2015] [Accepted: 12/21/2015] [Indexed: 11/10/2022] Open
Abstract
Long-distance migration in birds is relatively well studied in nature; however, one aspect of this phenomenon that remains poorly understood is the pattern of distribution presented by species during arrival to and establishment of wintering areas. Some studies suggest that the selection of areas in winter is somehow determined by climate, given its influence on both the distribution of bird species and their resources. We analyzed whether different migrant passerine species of North America present climatic preferences during arrival to and departure from their wintering areas. We used ecological niche modeling to generate monthly potential climatic distributions for 13 migratory bird species during the winter season by combining the locations recorded per month with four environmental layers. We calculated monthly coefficients of climate variation and then compared two GLM (generalized linear models), evaluated with the AIC (Akaike information criterion), to describe how these coefficients varied over the course of the season, as a measure of the patterns of establishment in the wintering areas. For 11 species, the sites show nonlinear patterns of variation in climatic preferences, with low coefficients of variation at the beginning and end of the season and higher values found in the intermediate months. The remaining two species analyzed showed a different climatic pattern of selective establishment of wintering areas, probably due to taxonomic discrepancy, which would affect their modeled winter distribution. Patterns of establishment of wintering areas in the species showed a climatic preference at the macroscale, suggesting that individuals of several species actively select wintering areas that meet specific climatic conditions. This probably gives them an advantage over the winter and during the return to breeding areas. As these areas become full of migrants, alternative suboptimal sites are occupied. Nonrandom winter area selection may also have consequences for the conservation of migratory bird species, particularly under a scenario of climate change.
Collapse
Affiliation(s)
- Heidi Pérez‐Moreno
- Red de Biología EvolutivaInstituto de Ecología A. C.XalapaVeracruzMéxico
| | | | - Jorge Soberón Mainero
- Natural History Museum and Biodiversity Research CenterDepartment of Evolutionary BiologyUniversity of KansasLawrenceKansas
| | - Octavio Rojas‐Soto
- Red de Biología EvolutivaInstituto de Ecología A. C.XalapaVeracruzMéxico
| |
Collapse
|
23
|
Gómez C, Tenorio EA, Montoya P, Cadena CD. Niche-tracking migrants and niche-switching residents: evolution of climatic niches in New World warblers (Parulidae). Proc Biol Sci 2016; 283:20152458. [PMID: 26865303 PMCID: PMC4760163 DOI: 10.1098/rspb.2015.2458] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/18/2016] [Indexed: 11/12/2022] Open
Abstract
Differences in life-history traits between tropical and temperate lineages are often attributed to differences in their climatic niche dynamics. For example, the more frequent appearance of migratory behaviour in temperate-breeding species than in species originally breeding in the tropics is believed to have resulted partly from tropical climatic stability and niche conservatism constraining tropical species from shifting their ranges. However, little is known about the patterns and processes underlying climatic niche evolution in migrant and resident animals. We evaluated the evolution of overlap in climatic niches between seasons and its relationship to migratory behaviour in the Parulidae, a family of New World passerine birds. We used ordination methods to measure seasonal niche overlap and niche breadth of 54 resident and 49 migrant species and used phylogenetic comparative methods to assess patterns of climatic niche evolution. We found that despite travelling thousands of kilometres, migrants tracked climatic conditions across the year to a greater extent than tropical residents. Migrant species had wider niches than resident species, although residents as a group occupied a wider climatic space and niches of migrants and residents overlapped extensively. Neither breeding latitude nor migratory distance explained variation among species in climatic niche overlap between seasons. Our findings support the notion that tropical species have narrower niches than temperate-breeders, but does not necessarily constrain their ability to shift or expand their geographical ranges and become migratory. Overall, the tropics may have been historically less likely to experience the suite of components that generate strong selection pressures for the evolution of migratory behaviour.
Collapse
Affiliation(s)
- Camila Gómez
- Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias Biológicas, Universidad de Los Andes, Bogotá, Colombia SELVA: Investigación para la Conservación en el Neotrópico, Bogotá, Colombia
| | - Elkin A Tenorio
- Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias Biológicas, Universidad de Los Andes, Bogotá, Colombia
| | - Paola Montoya
- Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias Biológicas, Universidad de Los Andes, Bogotá, Colombia
| | - Carlos Daniel Cadena
- Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias Biológicas, Universidad de Los Andes, Bogotá, Colombia
| |
Collapse
|
24
|
McLean BS, Bell KC, Dunnum JL, Abrahamson B, Colella JP, Deardorff ER, Weber JA, Jones AK, Salazar-Miralles F, Cook JA. Natural history collections-based research: progress, promise, and best practices. J Mammal 2016; 97:287-297. [PMID: 26989266 PMCID: PMC4794611 DOI: 10.1093/jmammal/gyv178] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 10/16/2015] [Accepted: 10/19/2015] [Indexed: 12/20/2022] Open
Abstract
Specimens and associated data in natural history collections (NHCs) foster substantial scientific progress. In this paper, we explore recent contributions of NHCs to the study of systematics and biogeography, genomics, morphology, stable isotope ecology, and parasites and pathogens of mammals. To begin to assess the magnitude and scope of these contributions, we analyzed publications in the Journal of Mammalogy over the last decade, as well as recent research supported by a single university mammal collection (Museum of Southwestern Biology, Division of Mammals). Using these datasets, we also identify weak links that may be hindering the development of crucial NHC infrastructure. Maintaining the vitality and growth of this foundation of mammalogy depends on broader engagement and support from across the scientific community and is both an ethical and scientific imperative given the rapidly changing environmental conditions on our planet.
Collapse
Affiliation(s)
- Bryan S. McLean
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Kayce C. Bell
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Jonathan L. Dunnum
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Bethany Abrahamson
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Jocelyn P. Colella
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Eleanor R. Deardorff
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Jessica A. Weber
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Amanda K. Jones
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Fernando Salazar-Miralles
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| | - Joseph A. Cook
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA (BSM, KCB, JLD, BA, JPC, ERD, JAW, AKJ, FS-M, JAC)
| |
Collapse
|
25
|
Newsome SD, Sabat P, Wolf N, Rader JA, del Rio CM. Multi-tissue δ2H analysis reveals altitudinal migration and tissue-specific discrimination patterns inCinclodes. Ecosphere 2015. [DOI: 10.1890/es15-00086.1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
26
|
El-Arabany N, Sorensen M, Hansson B. Inferring the links between breeding and wintering grounds in a Palearctic– African migratory bird, the Great Reed Warbler, using mitochondrial DNA data. AFRICAN ZOOLOGY 2015. [DOI: 10.1080/15627020.2015.1055301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
27
|
Voigt CC, Lehmann D, Greif S. Stable isotope ratios of hydrogen separate mammals of aquatic and terrestrial food webs. Methods Ecol Evol 2015. [DOI: 10.1111/2041-210x.12414] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Christian C. Voigt
- Leibniz Institute for Zoo and Wildlife Research, Evolutionary Ecology Research Group Alfred‐Kowalke‐Str. 17 10315 Berlin Germany
| | - David Lehmann
- Leibniz Institute for Zoo and Wildlife Research, Evolutionary Ecology Research Group Alfred‐Kowalke‐Str. 17 10315 Berlin Germany
| | - Stefan Greif
- Max Planck Institute for Ornithology, Sensory Ecology Group Eberhard‐Gwinner‐Strasse House 11 82319 Seewiesen Germany
| |
Collapse
|
28
|
von Rönn JAC, Harrod C, Bensch S, Wolf JBW. Transcontinental migratory connectivity predicts parasite prevalence in breeding populations of the European barn swallow. J Evol Biol 2015; 28:535-46. [DOI: 10.1111/jeb.12585] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 12/18/2014] [Accepted: 01/14/2015] [Indexed: 01/17/2023]
Affiliation(s)
- J. A. C. von Rönn
- Department of Evolutionary Genetics; Max Planck Institute of Evolutionary Biology; Plön Germany
| | - C. Harrod
- School of Biological Sciences; Medical Biology Centre; Queen's University Belfast; Belfast UK
- Instituto de Ciencias Naturales Alexander Von Humboldt; Universidad de Antofagasta; Antofagasta Chile
| | - S. Bensch
- Department of Biology; Lund University; Lund Sweden
| | - J. B. W. Wolf
- Department of Evolutionary Genetics; Max Planck Institute of Evolutionary Biology; Plön Germany
- Department of Evolutionary Biology; Uppsala University; Uppsala Sweden
| |
Collapse
|
29
|
Stanley CQ, McKinnon EA, Fraser KC, Macpherson MP, Casbourn G, Friesen L, Marra PP, Studds C, Ryder TB, Diggs NE, Stutchbury BJM. Connectivity of wood thrush breeding, wintering, and migration sites based on range-wide tracking. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2015; 29:164-174. [PMID: 25052795 DOI: 10.1111/cobi.12352] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 04/24/2014] [Indexed: 05/28/2023]
Abstract
Many migratory animals are experiencing rapid population declines, but migration data with the geographic scope and resolution to quantify the complex network of movements between breeding and nonbreeding regions are often lacking. Determining the most frequently used migration routes and nonbreeding regions for a species is critical for understanding population dynamics and making effective conservation decisions. We tracked the migration of individual Wood Thrushes (Hylocichla mustelina) (n = 102) from across their range with light-level geolocators and, for the first time, quantified migration routes and wintering regions for distinct breeding populations. We identified regional and species-level migratory connectivity networks for this declining songbird by combining our tracking results with range-wide breeding abundance estimates and forest cover data. More than 50% of the species occupied the eastern wintering range (Honduras to Costa Rica), a region that includes only one-third of all wintering habitat and that is undergoing intensive deforestation. We estimated that half of all Wood Thrushes in North America migrate south through Florida in fall, whereas in spring approximately 73% funnel northward through a narrow span along the central U.S. Gulf Coast (88-93°W). Identifying migratory networks is a critical step for conservation of songbirds and we demonstrated with Wood Thrushes how it can highlight conservation hotspots for regional populations and species as a whole.
Collapse
Affiliation(s)
- Calandra Q Stanley
- Department of Biology, York University, Toronto, M3J 1P3, Canada; Smithsonian Conservation Biology Institute, Migratory Bird Center, National Zoological Park, Washington, D.C., 20013, U.S.A.; Canadian Wildlife Service, Ontario Region, 867 Lakeshore Road, Burlington, Ontario, Canada
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Gow EA, Wiebe KL. Males migrate farther than females in a differential migrant: an examination of the fasting endurance hypothesis. ROYAL SOCIETY OPEN SCIENCE 2014; 1:140346. [PMID: 26064574 PMCID: PMC4448777 DOI: 10.1098/rsos.140346] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 11/19/2014] [Indexed: 05/30/2023]
Abstract
Patterns of migration including connectivity between breeding and non-breeding populations and intraspecific variation in the distance travelled are important to study because they can affect individual fitness and population dynamics. Using data from 182 band recoveries across North America and 17 light-level geolocators, we examined the migration patterns of the northern flicker (Colaptes auratus), a migratory woodpecker. This species is unusual among birds because males invest more in parental care than females. Breeding latitude was positively correlated to migration distance because populations in the north appeared to travel farther distances than southern populations to find wintering locations with little snow cover. Connectivity was strong for populations west and east of the Continental Divide. Contrary to the three main hypotheses for intraspecific variation in migration distance, females wintered, on average, farther north than males, although there was overlap throughout their non-breeding range. This pattern contradicts those of other species found to date and is most consistent with the fasting endurance hypothesis if investment in parental care depletes the energy reserves of male flickers more than females. We thus propose a new factor, parental effort, which may influence optimal wintering areas and migration strategies within birds, and encourage future experimental studies to test the relationship between parental care roles and migration strategies of the sexes.
Collapse
|
31
|
Ruegg KC, Anderson EC, Paxton KL, Apkenas V, Lao S, Siegel RB, DeSante DF, Moore F, Smith TB. Mapping migration in a songbird using high-resolution genetic markers. Mol Ecol 2014; 23:5726-39. [DOI: 10.1111/mec.12977] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 10/17/2014] [Accepted: 10/20/2014] [Indexed: 12/16/2022]
Affiliation(s)
- Kristen C. Ruegg
- Center for Tropical Research; Institute of the Environment and Sustainability; University of California, Los Angeles; La Kretz Hall Suite 300 619 Charles E. Young Dr. East Los Angeles CA 90095 USA
- Department of Ecology and Evolutionary Biology; University of California, Santa Cruz; Santa Cruz CA 95060 USA
| | - Eric C. Anderson
- Southwest Fisheries Science Center; National Marine Fisheries Service; 110 Shaffer Road Santa Cruz CA 95060 USA
- Department of Applied Mathematics and Statistics; University of California; Santa Cruz CA 95060 USA
| | - Kristina L. Paxton
- Department of Biological Sciences; University of Southern Mississippi; Hattiesburg MS 39406 USA
- Department of Biology; University of Hawaii; Hilo HI 96720 USA
| | - Vanessa Apkenas
- Southwest Fisheries Science Center; National Marine Fisheries Service; 110 Shaffer Road Santa Cruz CA 95060 USA
| | - Sirena Lao
- Center for Tropical Research; Institute of the Environment and Sustainability; University of California, Los Angeles; La Kretz Hall Suite 300 619 Charles E. Young Dr. East Los Angeles CA 90095 USA
| | - Rodney B. Siegel
- The Institute for Bird Populations; PO Box 1346 Point Reyes Station CA 94956 USA
| | - David F. DeSante
- The Institute for Bird Populations; PO Box 1346 Point Reyes Station CA 94956 USA
| | - Frank Moore
- Department of Biology; University of Hawaii; Hilo HI 96720 USA
| | - Thomas B. Smith
- Center for Tropical Research; Institute of the Environment and Sustainability; University of California, Los Angeles; La Kretz Hall Suite 300 619 Charles E. Young Dr. East Los Angeles CA 90095 USA
- Department of Ecology and Evolutionary Biology; University of California; Los Angles CA 90095 USA
| |
Collapse
|
32
|
Meiri M, Lister AM, Collins MJ, Tuross N, Goebel T, Blockley S, Zazula GD, van Doorn N, Dale Guthrie R, Boeskorov GG, Baryshnikov GF, Sher A, Barnes I. Faunal record identifies Bering isthmus conditions as constraint to end-Pleistocene migration to the New World. Proc Biol Sci 2014; 281:20132167. [PMID: 24335981 PMCID: PMC3871309 DOI: 10.1098/rspb.2013.2167] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 11/21/2013] [Indexed: 11/12/2022] Open
Abstract
Human colonization of the New World is generally believed to have entailed migrations from Siberia across the Bering isthmus. However, the limited archaeological record of these migrations means that details of the timing, cause and rate remain cryptic. Here, we have used a combination of ancient DNA, 14C dating, hydrogen and oxygen isotopes, and collagen sequencing to explore the colonization history of one of the few other large mammals to have successfully migrated into the Americas at this time: the North American elk (Cervus elaphus canadensis), also known as wapiti. We identify a long-term occupation of northeast Siberia, far beyond the species's current Old World distribution. Migration into North America occurred at the end of the last glaciation, while the northeast Siberian source population became extinct only within the last 500 years. This finding is congruent with a similar proposed delay in human colonization, inferred from modern human mitochondrial DNA, and suggestions that the Bering isthmus was not traversable during parts of the Late Pleistocene. Our data imply a fundamental constraint in crossing Beringia, placing limits on the age and mode of human settlement in the Americas, and further establish the utility of ancient DNA in palaeontological investigations of species histories.
Collapse
Affiliation(s)
- Meirav Meiri
- Zoological Museum and Department of Zoology, Institute of Archaeology, The Steinhardt National Collection of Natural History, Tel Aviv University, Tel Aviv 69978, Israel
| | - Adrian M. Lister
- Earth Sciences Department, Natural History Museum, Cromwell Road, London SW7 5BD, UK
| | - Matthew J. Collins
- Department of Archaeology, University of York, Heslington, York YO10 5YW, UK
| | - Noreen Tuross
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA
| | - Ted Goebel
- Center for the Study of the First Americans, Department of Anthropology, Texas A&M University, College Station, TX 77843, USA
| | - Simon Blockley
- Department of Geography, University of London, Egham, Surrey TW20 0EX, UK
| | - Grant D. Zazula
- Department of Tourism and Culture, Government of Yukon, PO Box 2703, Whitehorse, Yukon, CanadaY1A 2C6
| | - Nienke van Doorn
- Department of Archaeology, University of York, Heslington, York YO10 5YW, UK
| | - R. Dale Guthrie
- Institute of Arctic Biology, University of Alaska, Fairbanks, AK 99709, USA
| | - Gennady G. Boeskorov
- Siberian Branch of Russian Academy of Sciences (SB RAS), Diamond and Precious Metals Geology Institute, 39 Prospect Lenina, Yakutsk 677980, Russia
- M. K. Ammosov's North-Eastern Federal University, 48 Kulakovsky street, Yakutsk 677013, Russia
| | - Gennady F. Baryshnikov
- Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St Petersburg 199034, Russia
| | | | - Ian Barnes
- Earth Sciences Department, Natural History Museum, Cromwell Road, London SW7 5BD, UK
- School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK
| |
Collapse
|
33
|
Hopkins JB, Cutting KA, Warren JM. Use of stable isotopes to investigate keratin deposition in the claw tips of ducks. PLoS One 2013; 8:e81026. [PMID: 24282563 PMCID: PMC3839900 DOI: 10.1371/journal.pone.0081026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 10/14/2013] [Indexed: 11/18/2022] Open
Abstract
Stable isotopes derived from the claws of birds could be used to determine the migratory origins of birds if the time periods represented in excised sections of claws were known. We investigated new keratin growth in the claws of adult female Lesser Scaup (Aythya affinis) by estimating the equilibration rates of stable isotopes (δ13C, δ15N, and δ2H) from the breeding grounds into 1 mm claw tips. We sampled birds on their breeding ground through time and found that it took approximately 3–3.5 months for isotope values in most claw tips to equilibrate to isotope values that reflected those present in the environment on their breeding grounds. Results from this study suggest that isotopes equilibrate slowly into claw tips of Lesser Scaup, suggesting isotopes could potentially be used to determine the wintering grounds of birds. We suggest using controlled feeding experiments or longitudinal field investigations to understand claw growth and isotopic equilibration in claw tips. Such information would be valuable in ascertaining whether claw tips can be used in future studies to identify the migratory origins of birds.
Collapse
Affiliation(s)
- John B. Hopkins
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, California, United States of America
- * E-mail:
| | - Kyle A. Cutting
- Red Rock Lakes National Wildlife Refuge, U.S. Fish and Wildlife Service, Lima, Montana, United States of America
| | - Jeffrey M. Warren
- Red Rock Lakes National Wildlife Refuge, U.S. Fish and Wildlife Service, Lima, Montana, United States of America
| |
Collapse
|
34
|
Knick ST, Leu M, Rotenberry JT, Hanser SE, Fesenmyer KA. Diffuse migratory connectivity in two species of shrubland birds: evidence from stable isotopes. Oecologia 2013; 174:595-608. [PMID: 24122177 DOI: 10.1007/s00442-013-2791-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 09/19/2013] [Indexed: 11/28/2022]
Abstract
Connecting seasonal ranges of migratory birds is important for understanding the annual template of stressors that influence their populations. Brewer’s sparrows (Spizella breweri) and sagebrush sparrows (Artemisiospiza nevadensis) share similar sagebrush (Artemisia spp.) habitats for breeding but have different population trends that might be related to winter location. To link breeding and winter ranges, we created isoscapes of deuterium [stable isotope ratio (δ) of deuterium; δ2H] and nitrogen (δ15N) for each species modeled from isotope ratios measured in feathers of 264 Brewer’s and 82 sagebrush sparrows and environmental characteristics at capture locations across their breeding range. We then used feather 2Hf and 15Nf measured in 1,029 Brewer’s and 527 sagebrush sparrows captured on winter locations in southwestern United States to assign probable breeding ranges. Intraspecies population mixing from across the breeding range was strong for both Brewer’s and sagebrush sparrows on winter ranges. Brewer’s sparrows but not sagebrush sparrows were linked to more northerly breeding locations in the eastern part of their winter range. Winter location was not related to breeding population trends estimated from US Geological Survey Breeding Bird Survey routes for either Brewer’s or sagebrush sparrows. Primary drivers of population dynamics are likely independent for each species; Brewer’s and sagebrush sparrows captured at the same winter location did not share predicted breeding locations or population trends. The diffuse migratory connectivity displayed by Brewer’s and sagebrush sparrows measured at the coarse spatial resolution in our analysis also suggests that local environments rather than broad regional characteristics are primary drivers of annual population trends.
Collapse
|
35
|
Neubauer P, Shima JS, Swearer SE. Inferring dispersal and migrations from incomplete geochemical baselines: analysis of population structure using Bayesian infinite mixture models. Methods Ecol Evol 2013. [DOI: 10.1111/2041-210x.12076] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Philipp Neubauer
- Victoria University Coastal Ecology Laboratory; School of Biological Sciences; Victoria University of Wellington; Wellington; New Zealand
| | - Jeffrey S. Shima
- Victoria University Coastal Ecology Laboratory; School of Biological Sciences; Victoria University of Wellington; Wellington; New Zealand
| | - Stephen E. Swearer
- Department of Zoology; University of Melbourne; Melbourne; Vic.; Australia
| |
Collapse
|
36
|
Voigt CC, Schneeberger K, Luckner A. Ecological and dietary correlates of stable hydrogen isotope ratios in fur and body water of syntopic tropical bats. Ecology 2013; 94:346-55. [DOI: 10.1890/12-1187.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
37
|
Fraser KC, Stutchbury BJM, Silverio C, Kramer PM, Barrow J, Newstead D, Mickle N, Cousens BF, Lee JC, Morrison DM, Shaheen T, Mammenga P, Applegate K, Tautin J. Continent-wide tracking to determine migratory connectivity and tropical habitat associations of a declining aerial insectivore. Proc Biol Sci 2012; 279:4901-6. [PMID: 23097508 DOI: 10.1098/rspb.2012.2207] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
North American birds that feed on flying insects are experiencing steep population declines, particularly long-distance migratory populations in the northern breeding range. We determine, for the first time, the level of migratory connectivity across the range of a songbird using direct tracking of individuals, and test whether declining northern populations have higher exposure to agricultural landscapes at their non-breeding grounds in South America. We used light-level geolocators to track purple martins, Progne subis, originating from North American breeding populations, coast-to-coast (n = 95 individuals). We show that breeding populations of the eastern subspecies, P. s. subis, that are separated by ca. 2000 km, nevertheless have almost completely overlapping non-breeding ranges in Brazil. Most (76%) P. s. subis overwintered in northern Brazil near the Amazon River, not in the agricultural landscape of southern Brazil. Individual non-breeding sites had an average of 91 per cent forest and only 4 per cent agricultural ground cover within a 50 km radius, and birds originating from declining northern breeding populations were not more exposed to agricultural landscapes than stable southern breeding populations. Our results show that differences in wintering location and habitat do not explain recent trends in breeding population declines in this species, and instead northern populations may be constrained in their ability to respond to climate change.
Collapse
Affiliation(s)
- Kevin C Fraser
- Department of Biology, York University, 4700 Keele St., Toronto, ON, Canada.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Regional scale high resolution δ18O prediction in precipitation using MODIS EVI. PLoS One 2012; 7:e45496. [PMID: 23029053 PMCID: PMC3446878 DOI: 10.1371/journal.pone.0045496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Accepted: 08/23/2012] [Indexed: 11/22/2022] Open
Abstract
The natural variation in stable water isotope ratio data, also known as water isoscape, is a spatiotemporal fingerprint and a powerful natural tracer that has been widely applied in disciplines as diverse as hydrology, paleoclimatology, ecology and forensic investigation. Although much effort has been devoted to developing a predictive water isoscape model, it remains a central challenge for scientists to generate high accuracy, fine scale spatiotemporal water isoscape prediction. Here we develop a novel approach of using the MODIS-EVI (the Moderate Resolution Imagining Spectroradiometer-Enhanced Vegetation Index), to predict δ18O in precipitation at the regional scale. Using a structural equation model, we show that the EVI and precipitated δ18O are highly correlated and thus the EVI is a good predictor of precipitated δ18O. We then test the predictability of our EVI-δ18O model and demonstrate that our approach can provide high accuracy with fine spatial (250×250 m) and temporal (16 days) scale δ18O predictions (annual and monthly predictabilities [r] are 0.96 and 0.80, respectively). We conclude the merging of the EVI and δ18O in precipitation can greatly extend the spatial and temporal data availability and thus enhance the applicability for both the EVI and water isoscape.
Collapse
|
39
|
Ceriani SA, Roth JD, Evans DR, Weishampel JF, Ehrhart LM. Inferring foraging areas of nesting loggerhead turtles using satellite telemetry and stable isotopes. PLoS One 2012; 7:e45335. [PMID: 23028943 PMCID: PMC3447946 DOI: 10.1371/journal.pone.0045335] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 08/20/2012] [Indexed: 11/17/2022] Open
Abstract
In recent years, the use of intrinsic markers such as stable isotopes to link breeding and foraging grounds of migratory species has increased. Nevertheless, several assumptions still must be tested to interpret isotopic patterns found in the marine realm. We used a combination of satellite telemetry and stable isotope analysis to (i) identify key foraging grounds used by female loggerheads nesting in Florida and (ii) examine the relationship between stable isotope ratios and post-nesting migration destinations. We collected tissue samples for stable isotope analysis from 14 females equipped with satellite tags and an additional 57 untracked nesting females. Telemetry identified three post-nesting migratory pathways and associated non-breeding foraging grounds: (1) a seasonal continental shelf–constrained migratory pattern along the northeast U.S. coastline, (2) a non-breeding residency in southern foraging areas and (3) a residency in the waters adjacent to the breeding area. Isotopic variability in both δ13C and δ15N among individuals allowed identification of three distinct foraging aggregations. We used discriminant function analysis to examine how well δ13C and δ15N predict female post-nesting migration destination. The discriminant analysis classified correctly the foraging ground used for all but one individual and was used to predict putative feeding areas of untracked turtles. We provide the first documentation that the continental shelf of the Mid- and South Atlantic Bights are prime foraging areas for a large number (61%) of adult female loggerheads from the largest loggerhead nesting population in the western hemisphere and the second largest in the world. Our findings offer insights for future management efforts and suggest that this technique can be used to infer foraging strategies and residence areas in lieu of more expensive satellite telemetry, enabling sample sizes that are more representative at the population level.
Collapse
Affiliation(s)
- Simona A Ceriani
- Marine Turtle Research Group and Department of Biological Sciences, University of Central Florida, Orlando, Florida, United States of America.
| | | | | | | | | |
Collapse
|
40
|
Reichlin TS, Hobson KA, Van Wilgenburg SL, Schaub M, Wassenaar LI, Martín-Vivaldi M, Arlettaz R, Jenni L. Conservation through connectivity: can isotopic gradients in Africa reveal winter quarters of a migratory bird? Oecologia 2012; 171:591-600. [PMID: 23011847 DOI: 10.1007/s00442-012-2418-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Accepted: 07/11/2012] [Indexed: 11/29/2022]
Abstract
Conservation of migratory wildlife requires knowledge of migratory connectivity between breeding and non-breeding locations. Stable isotopes in combination with geographical isotopic patterns (isoscapes) can provide inferences about migratory connectivity. This study examines whether such an approach can be used to infer wintering areas in sub-Saharan Africa, where we lack such knowledge for many species, but where this method has not been used widely. We measured δ (2)H, δ (13)C and δ (15)N in winter-grown feathers of a breeding Swiss and Spanish population of European hoopoe Upupa epops--a typical Palaearctic-Afrotropical migrant. δ (2)H values predicted that ~70 % of the hoopoes spent the non-breeding season in the western portion of their potential winter range. This was corroborated by a shallow east-west gradient in feather-δ (2)H values of museum specimens from known African origin across the potential winter range and by the recovery of Swiss hoopoes marked with geolocators. Hoopoes categorized as from eastern versus western regions of the wintering range were further delineated spatially using feather δ (13)C and δ (15)N. δ (15)N showed no trend, whereas adults were more enriched in (13)C in the western portion of the range, with eastern adults being in addition more depleted in (13)C than eastern juveniles. This suggests that eastern juveniles may have occupied more xeric habitats than sympatric adults. We demonstrated that stable isotopes, especially δ (2)H, could only very roughly delineate the winter distribution of a trans-Saharan Palaearctic migrant restricted primarily to the Sahelian and savanna belt south of the Sahara. Further refinements of precipitation isoscapes for Africa as well the development of isoscapes for δ (13)C and δ (15)N may improve assignment of this and other migrants.
Collapse
Affiliation(s)
- Thomas S Reichlin
- Swiss Ornithological Institute, Seerose 1, 6204, Sempach, Switzerland
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Rogers KM, Wassenaar LI, Soto DX, Bartle JA. A feather-precipitation hydrogen isoscape model for New Zealand: implications for eco-forensics. Ecosphere 2012. [DOI: 10.1890/es11-00343.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
42
|
Linking hydrogen (δ2H) isotopes in feathers and precipitation: sources of variance and consequences for assignment to isoscapes. PLoS One 2012; 7:e35137. [PMID: 22509393 PMCID: PMC3324428 DOI: 10.1371/journal.pone.0035137] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 03/13/2012] [Indexed: 11/26/2022] Open
Abstract
Background Tracking small migrant organisms worldwide has been hampered by technological and recovery limitations and sampling bias inherent in exogenous markers. Naturally occurring stable isotopes of H (δ2H) in feathers provide an alternative intrinsic marker of animal origin due to the predictable spatial linkage to underlying hydrologically driven flow of H isotopes into foodwebs. This approach can assess the likelihood that a migrant animal originated from a given location(s) within a continent but requires a robust algorithm linking H isotopes in tissues of interest to an appropriate hydrological isotopic spatio-temporal pattern, such as weighted-annual rainfall. However, a number of factors contribute to or alter expected isotopic patterns in animals. We present results of an extensive investigation into taxonomic and environmental factors influencing feather δ2H patterns across North America. Principal Findings Stable isotope data were measured from 544 feathers from 40 species and 140 known locations. For δ2H, the most parsimonious model explaining 83% of the isotopic variance was found with amount-weighted growing-season precipitation δ2H, foraging substrate and migratory strategy. Conclusions/Significance This extensive H isotopic analysis of known-origin feathers of songbirds in North America and elsewhere reconfirmed the strong coupling between tissue δ2H and global hydrologic δ2H patterns, and accounting for variance associated with foraging substrate and migratory strategy, can be used in conservation and research for the purpose of assigning birds and other species to their approximate origin.
Collapse
|
43
|
Peters JM, Wolf N, Stricker CA, Collier TR, Martínez del Rio C. Effects of trophic level and metamorphosis on discrimination of hydrogen isotopes in a plant-herbivore system. PLoS One 2012; 7:e32744. [PMID: 22470423 PMCID: PMC3314649 DOI: 10.1371/journal.pone.0032744] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Accepted: 02/03/2012] [Indexed: 11/18/2022] Open
Abstract
The use of stable isotopes in ecological studies requires that we know the magnitude of discrimination factors between consumer and element sources. The causes of variation in discrimination factors for carbon and nitrogen have been relatively well studied. In contrast, the discrimination factors for hydrogen have rarely been measured. We grew cabbage looper caterpillars (Trichoplusia ni) on cabbage (Brassica oleracea) plants irrigated with four treatments of deuterium-enriched water (δD = -131, -88, -48, and -2‰, respectively), allowing some of them to reach adulthood as moths. Tissue δD values of plants, caterpillars, and moths were linearly correlated with the isotopic composition of irrigation water. However, the slope of these relationships was less than 1, and hence, discrimination factors depended on the δD value of irrigation water. We hypothesize that this dependence is an artifact of growing plants in an environment with a common atmospheric δD value. Both caterpillars and moths were significantly enriched in deuterium relative to plants by ∼45‰ and 23‰ respectively, but the moths had lower tissue to plant discrimination factors than did the caterpillars. If the trophic enrichment documented here is universal, δD values must be accounted for in geographic assignment studies. The isotopic value of carbon was transferred more or less faithfully across trophic levels, but δ(15)N values increased from plants to insects and we observed significant non-trophic (15)N enrichment in the metamorphosis from larvae to adult.
Collapse
Affiliation(s)
- Jacob M Peters
- Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, United States of America.
| | | | | | | | | |
Collapse
|
44
|
Venier LA, Holmes SB, Pearce JL, Fournier RE. Misleading correlations: The case of the Canada warbler and spruce budworm. J Wildl Manage 2012. [DOI: 10.1002/jwmg.257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
45
|
Wilson S, LaDeau SL, Tøttrup AP, Marra PP. Range-wide effects of breeding- and nonbreeding-season climate on the abundance of a Neotropical migrant songbird. Ecology 2011; 92:1789-98. [PMID: 21939075 DOI: 10.1890/10-1757.1] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Geographic variation in the population dynamics of a species can result from regional variability in climate and how it affects reproduction and survival. Identifying such effects for migratory birds requires the integration of population models with knowledge of migratory connectivity between breeding and nonbreeding areas. We used Bayesian hierarchical models with 26 years of Breeding Bird Survey data (1982-2007) to investigate the impacts of breeding- and nonbreeding-season climate on abundance of American Redstarts (Setophaga ruticilla) across the species range. We focused on 15 populations defined by Bird Conservation Regions, and we included variation across routes and observers as well as temporal trends and climate effects. American Redstart populations that breed in eastern North America showed increased abundance following winters with higher plant productivity in the Caribbean where they are expected to overwinter. In contrast, western breeding populations showed little response to conditions in their expected wintering areas in west Mexico, perhaps reflecting lower migratory connectivity or differential effects of winter rainfall on individuals across the species range. Unlike the case with winter climate, we found few effects of temperature prior to arrival in spring (March-April) or during the nesting period (May-June) on abundance the following year. Eight populations showed significant changes in abundance, with the steepest declines in the Atlantic Northern Forest (-3.4%/yr) and the greatest increases in the Prairie Hardwood Transition (4%/yr). This study emphasizes how the effects of climate on populations of migratory birds are context dependent and can vary depending on geographic location and the period of the annual cycle. Such knowledge is essential for predicting regional variation in how populations of a species might vary in their response to climate change.
Collapse
Affiliation(s)
- Scott Wilson
- Smithsonian Migratory Bird Center, National Zoological Park, Washington, DC 20008, USA.
| | | | | | | |
Collapse
|
46
|
Winger BM, Lovette IJ, Winkler DW. Ancestry and evolution of seasonal migration in the Parulidae. Proc Biol Sci 2011; 279:610-8. [PMID: 21752818 DOI: 10.1098/rspb.2011.1045] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Seasonal migration in birds is known to be highly labile and subject to rapid change in response to selection, such that researchers have hypothesized that phylogenetic relationships should neither predict nor constrain the migratory behaviour of a species. Many theories on the evolution of bird migration assume a framework that extant migratory species have evolved repeatedly and relatively recently from sedentary tropical or subtropical ancestors. We performed ancestral state reconstructions of migratory behaviour using a comprehensive, well-supported phylogeny of the Parulidae (the 'wood-warblers'), a large family of Neotropical and Nearctic migratory and sedentary songbirds, and examined the rates of gain and loss of migration throughout the Parulidae. Counter to traditional hypotheses, our results suggest that the ancestral wood-warbler was migratory and that losses of migration have been at least as prevalent as gains throughout the history of Parulidae. Therefore, extant sedentary tropical radiations in the Parulidae represent losses of latitudinal migration and colonization of the tropics from temperate regions. We also tested for phylogenetic signal in migratory behaviour, and our results indicate that although migratory behaviour is variable within some wood-warbler species and clades, phylogeny significantly predicts the migratory distance of species in the Parulidae.
Collapse
Affiliation(s)
- Benjamin M Winger
- Museum of Vertebrates and Department of Ecology and Evolutionary Biology, Corson Hall, Cornell University, Ithaca, NY 14853, USA.
| | | | | |
Collapse
|
47
|
Guillaumet A, Dorr B, Wang G, Taylor JD, Chipman RB, Scherr H, Bowman J, Abraham KF, Doyle TJ, Cranker E. Determinants of local and migratory movements of Great Lakes double-crested cormorants. Behav Ecol 2011. [DOI: 10.1093/beheco/arr096] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AbstractWe investigated how individual strategies combine with demographic and ecological factors to determine local and migratory movements in the double-crested cormorants (Phalacrocorax auritus). One hundred and forty-five cormorants were captured from 14 nesting colonies across the Great Lakes area and fitted with satellite transmitters. We first tested the hypotheses that sexual segregation, density-dependent effects, and the intensity of management operations influenced home range size during the breeding season. The influence of these factors appeared to be limited in part due to random variability in foraging and dispersal decisions at individual and colony levels. We also designed a statistical framework to investigate the degree and determinants of migratory connectivity. Our analyses revealed a significant migratory connectivity in cormorants, although we also observed a nonnegligible amount of individual variability and flexibility. Our data were most consistent with the existence of a migratory divide across the Great Lakes, with western populations using mainly the Mississippi Flyway and eastern populations the Atlantic Flyway. Previous and current studies suggest that the divide cannot be explained by past divergence in isolation, a way to diminish travel cost, or the Appalachians constituting an ecological barrier per se but is rather the consequence of the distribution of suitable stopover and nonbreeding areas. However, a parallel migration system and no migratory divide could not be entirely ruled out with present data.
Collapse
Affiliation(s)
- Alban Guillaumet
- Department of Wildlife, Fisheries and Aquaculture, Mail Stop 9690, Mississippi State University, Mississippi State, MS 39762, USA
| | - Brian Dorr
- United States Department of Agriculture/Wildlife Services/National Wildlife Research Center, Box 6099, Mississippi State, MS 39762, USA
| | - Guiming Wang
- Department of Wildlife, Fisheries and Aquaculture, Mail Stop 9690, Mississippi State University, Mississippi State, MS 39762, USA
| | - Jimmy D. Taylor
- United States Department of Agriculture/Wildlife Services/National Wildlife Research Center, 321 Richardson Hall, Corvallis, OR 97331, USA
| | - Richard B. Chipman
- United States Department of Agriculture/Wildlife Services, 1930 Route 9, Castleton, NY 12033, USA
| | - Heidi Scherr
- Center for Wildlife Ecology, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Jeff Bowman
- Ontario Ministry of Natural Resources, Trent University DNA Building, Peterborough, Ontario K9J 7B8, Canada
| | - Kenneth F. Abraham
- Ontario Ministry of Natural Resources, Trent University DNA Building, Peterborough, Ontario K9J 7B8, Canada
| | - Terry J. Doyle
- US Fish and Wildlife Service, 4401 N Fairfax Dr, MBSP-4107, Arlington, VA 22203-1610, USA
| | - Elizabeth Cranker
- United States Department of Agriculture/Wildlife Services, 5757 Sneller Road, Brewerton, NY 10329, USA
| |
Collapse
|
48
|
Dale CA, Leonard ML. Reproductive consequences of migration decisions by Ipswich Sparrows (Passerculus sandwichensis princeps). CAN J ZOOL 2011. [DOI: 10.1139/z10-098] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The costs and benefits associated with migration differ depending on individual decisions regarding the distance to migrate and where to winter. These decisions affect an individual’s winter experience, which may in turn impact reproductive success the following breeding season. We investigated whether winter location influences performance on the breeding grounds in a short-distance migrant, the Ipswich Sparrow ( Passerculus sandwichensis princeps Maynard, 1872), endemic to Sable Island, Nova Scotia, Canada. We used stable hydrogen isotope analysis to infer the winter location of individuals breeding on Sable Island, and investigated whether body condition, timing of breeding initiation, and number and condition of nestlings varied with winter location. Males wintered farther north than females, and males from the northern end of the wintering range were in better condition, established territories earlier, and tended to produce heavier nestlings than those wintering farther south. Conversely, females that wintered farther south had significantly earlier first egg dates than those that wintered farther north. The results of this study suggest that individual decisions about migration distance can impact reproductive success and that optimal winter locations differ between male and female Ipswich Sparrows.
Collapse
Affiliation(s)
- C. A. Dale
- Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, NS B3H 4J1, Canada
| | - M. L. Leonard
- Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, NS B3H 4J1, Canada
| |
Collapse
|
49
|
Colbeck GJ, Sillett TS, Webster MS. Asymmetric discrimination of geographical variation in song in a migratory passerine. Anim Behav 2010. [DOI: 10.1016/j.anbehav.2010.05.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
50
|
Physical structure of habitat network differently affects migration patterns of native and invasive fishes in Lake Biwa and its tributary lagoons: stable isotope approach. POPUL ECOL 2010. [DOI: 10.1007/s10144-010-0213-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|