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Pinsky ML, Clark RD, Bos JT. Coral Reef Population Genomics in an Age of Global Change. Annu Rev Genet 2023; 57:87-115. [PMID: 37384733 DOI: 10.1146/annurev-genet-022123-102748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Coral reefs are both exceptionally biodiverse and threatened by climate change and other human activities. Here, we review population genomic processes in coral reef taxa and their importance for understanding responses to global change. Many taxa on coral reefs are characterized by weak genetic drift, extensive gene flow, and strong selection from complex biotic and abiotic environments, which together present a fascinating test of microevolutionary theory. Selection, gene flow, and hybridization have played and will continue to play an important role in the adaptation or extinction of coral reef taxa in the face of rapid environmental change, but research remains exceptionally limited compared to the urgent needs. Critical areas for future investigation include understanding evolutionary potential and the mechanisms of local adaptation, developing historical baselines, and building greater research capacity in the countries where most reef diversity is concentrated.
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Affiliation(s)
- Malin L Pinsky
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, New Jersey, USA
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, California, USA;
| | - René D Clark
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, New Jersey, USA
| | - Jaelyn T Bos
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, New Jersey, USA
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2
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Bowen BW, Forsman ZH, Whitney JL, Faucci A, Hoban M, Canfield SJ, Johnston EC, Coleman RR, Copus JM, Vicente J, Toonen RJ. Species Radiations in the Sea: What the Flock? J Hered 2021; 111:70-83. [PMID: 31943081 DOI: 10.1093/jhered/esz075] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 11/06/2019] [Indexed: 12/13/2022] Open
Abstract
Species flocks are proliferations of closely-related species, usually after colonization of depauperate habitat. These radiations are abundant on oceanic islands and in ancient freshwater lakes, but rare in marine habitats. This contrast is well documented in the Hawaiian Archipelago, where terrestrial examples include the speciose silverswords (sunflower family Asteraceae), Drosophila fruit flies, and honeycreepers (passerine birds), all derived from one or a few ancestral lineages. The marine fauna of Hawai'i is also the product of rare colonization events, but these colonizations usually yield only one species. Dispersal ability is key to understanding this evolutionary inequity. While terrestrial fauna rarely colonize between oceanic islands, marine fauna with pelagic larvae can make this leap in every generation. An informative exception is the marine fauna that lack a pelagic larval stage. These low-dispersal species emulate a "terrestrial" mode of reproduction (brooding, viviparity, crawl-away larvae), yielding marine species flocks in scattered locations around the world. Elsewhere, aquatic species flocks are concentrated in specific geographic settings, including the ancient lakes of Baikal (Siberia) and Tanganyika (eastern Africa), and Antarctica. These locations host multiple species flocks across a broad taxonomic spectrum, indicating a unifying evolutionary phenomenon. Hence marine species flocks can be singular cases that arise due to restricted dispersal or other intrinsic features, or they can be geographically clustered, promoted by extrinsic ecological circumstances. Here, we review and contrast intrinsic cases of species flocks in individual taxa, and extrinsic cases of geological/ecological opportunity, to elucidate the processes of species radiations.
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Affiliation(s)
- Brian W Bowen
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Zac H Forsman
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Jonathan L Whitney
- Joint Institute for Marine and Atmospheric Research, University of Hawai'i, Honolulu, HI
| | - Anuschka Faucci
- Math & Sciences Division, Leeward Community College, University of Hawai'i, Pearl City, HI
| | - Mykle Hoban
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | | | - Erika C Johnston
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Richard R Coleman
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Joshua M Copus
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Jan Vicente
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
| | - Robert J Toonen
- Hawai'i Institute of Marine Biology, University of Hawai'i, Kaneohe, HI
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3
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Tang KL, Stiassny MLJ, Mayden RL, DeSalle R. Systematics of Damselfishes. ICHTHYOLOGY & HERPETOLOGY 2021. [DOI: 10.1643/i2020105] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kevin L. Tang
- University of Michigan–Flint, Department of Biology, 303 East Kearsley St., Flint, Michigan 48502; . Send reprint requests to this address
| | - Melanie L. J. Stiassny
- American Museum of Natural History, Department of Ichthyology, Central Park West at 79th St., New York, New York 10024;
| | - Richard L. Mayden
- Saint Louis University, Department of Biology, 3507 Laclede Ave., St. Louis, Missouri 63103;
| | - Robert DeSalle
- American Museum of Natural History, Division of Invertebrate Zoology, Central Park West at 79th St., New York, New York 10024;
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4
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Yang QQ, He C, Liu GF, Yin CL, Xu YP, Liu SW, Qiu JW, Yu XP. Introgressive hybridization between two non-native apple snails in China: widespread hybridization and homogenization in egg morphology. PEST MANAGEMENT SCIENCE 2020; 76:4231-4239. [PMID: 32594654 DOI: 10.1002/ps.5980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 05/26/2020] [Accepted: 06/28/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Apple snails from the genus Pomacea have spread widely in paddy fields and other wetlands of southern China since their introduction in the 1980s. Pomacea spp. are commonly identified using mitochondrial COI sequences. However, sequencing the nuclear elongation factor 1-alpha (EF1α) gene revealed genetic introgression between field populations of P. canaliculata and P. maculata, which produce surviving hybrids in laboratory crossbreeding experiments. RESULTS In this study, we sequenced 1054 EF1α clones to design specific primers and established a fast and accurate multiplex polymerase chain reaction (PCR) method for genotyping EF1α. Combined with genotyping P. canaliculata and P. maculata based on mitochondrial COI and nuclear EF1α, we revealed the genetic introgression patterns of 30 apple snail populations in China. Purebred and hybrid individuals of P. canaliculata were widely distributed, while pure maculata-EF1α type was detected only in a few individuals identified as P. canaliculata based on COI sequences. Each egg clutch had one to three genetic patterns, indicating multiple paternity or segregation in the progeny of hybrids. The higher percentages of hybrids in both wild populations and progeny than the homozygotes indicated a potential heterosis in the apple snail populations. Additionally, egg size and clutch size of the apple snails became homogeneous among the non-native populations exhibiting introgression hybridization. CONCLUSION Our findings emphasize the value of apple snails as a model to study the mechanisms and impacts of introgressive hybridization on fitness traits. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Qian-Qian Yang
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Chao He
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Guang-Fu Liu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Chuan-Lin Yin
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Yi-Peng Xu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Su-Wen Liu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Jian-Wen Qiu
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Xiao-Ping Yu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
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5
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Viard F, Riginos C, Bierne N. Anthropogenic hybridization at sea: three evolutionary questions relevant to invasive species management. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190547. [PMID: 32654643 PMCID: PMC7423285 DOI: 10.1098/rstb.2019.0547] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2020] [Indexed: 12/24/2022] Open
Abstract
Species introductions promote secondary contacts between taxa with long histories of allopatric divergence. Anthropogenic contact zones thus offer valuable contrasts to speciation studies in natural systems where past spatial isolations may have been brief or intermittent. Investigations of anthropogenic hybridization are rare for marine animals, which have high fecundity and high dispersal ability, characteristics that contrast to most terrestrial animals. Genomic studies indicate that gene flow can still occur after millions of years of divergence, as illustrated by invasive mussels and tunicates. In this context, we highlight three issues: (i) the effects of high propagule pressure and demographic asymmetries on introgression directionality, (ii) the role of hybridization in preventing introduced species spread, and (iii) the importance of postzygotic barriers in maintaining reproductive isolation. Anthropogenic contact zones offer evolutionary biologists unprecedented large scale hybridization experiments. In addition to breaking the highly effective reproductive isolating barrier of spatial segregation, they allow researchers to explore unusual demographic contexts with strong asymmetries. The outcomes are diverse, from introgression swamping to strong barriers to gene flow, and lead to local containment or widespread invasion. These outcomes should not be neglected in management policies of marine invasive species. This article is part of the theme issue 'Towards the completion of speciation: the evolution of reproductive isolation beyond the first barriers'.
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Affiliation(s)
- Frédérique Viard
- AD2M, Station Biologique de Roscoff, Sorbonne Université, CNRS, Roscoff, France
| | - Cynthia Riginos
- School of Biological Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Nicolas Bierne
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
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6
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Tea YK, Hobbs JPA, Vitelli F, DiBattista JD, Ho SYW, Lo N. Angels in disguise: sympatric hybridization in the marine angelfishes is widespread and occurs between deeply divergent lineages. Proc Biol Sci 2020; 287:20201459. [PMID: 32752983 DOI: 10.1098/rspb.2020.1459] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Hybridization events are not uncommon in marine environments where physical barriers are attenuated. Studies of coral reef taxa have suggested that hybridization predominantly occurs between parapatric species distributed along biogeographic suture zones. By contrast, little is known about the extent of sympatric hybridization on coral reefs, despite the large amount of biogeographic overlap shared by many coral reef species. Here, we investigate if the propensity for hybridization along suture zones represents a general phenomenon among coral reef fishes, by focusing on the marine angelfishes (family Pomacanthidae). Although hybridization has been reported for this family, it has not been thoroughly surveyed, with more recent hybridization studies focusing instead on closely related species from a population genetics perspective. We provide a comprehensive survey of hybridization among the Pomacanthidae, characterize the upper limits of genetic divergences between hybridizing species and investigate the occurrence of sympatric hybridization within this group. We report the occurrence of hybridization involving 42 species (48% of the family) from all but one genus of the Pomacanthidae. Our results indicate that the marine angelfishes are among the groups of coral reef fishes with the highest incidences of hybridization, not only between sympatric species, but also between deeply divergent lineages.
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Affiliation(s)
- Yi-Kai Tea
- School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales 2006, Australia.,Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, New South Wales 2010, Australia
| | - Jean-Paul A Hobbs
- School of Biological Sciences, University of Queensland, Brisbane, Queensland 4069, Australia
| | - Federico Vitelli
- Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia 6027, Australia
| | - Joseph D DiBattista
- Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, New South Wales 2010, Australia.,School of Molecular and Life Sciences, Curtin University, Perth, Western Australia 6102, Australia
| | - Simon Y W Ho
- School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Nathan Lo
- School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales 2006, Australia
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7
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Johnston Atoll: Reef Fish Hybrid Zone between Hawaii and the Equatorial Pacific. DIVERSITY 2020. [DOI: 10.3390/d12020083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Johnston Atoll is isolated in the Central Pacific Ocean (16°45′ N 169°31′ W) about 1287 km (800 miles) southwest of Honolulu, Hawaii and 1440 km (900 miles) north of the equatorial Line Islands, Kiribati. The labrid species, Thalassoma lutescens, has a wide range of distribution in the equatorial Pacific. The related species, Thalassoma duperrey, is endemic to the Hawaiian Islands. The pelagic larvae of both species dispersed to Johnston Atoll, where we found a mix of adult phenotypes representing a range of hybridization events over generations. A hybrid acanthurid was also documented. In addition, the arrival and colonization of two pomacentrid (damselfish) species to the atoll was observed in 1999. These pomacentrid sister-species, Abudefduf abdominalis and A. vaigiensis, have become established populations with subsequent hybridization. The biogeography of the Johnston Atoll coral reef fish population shows some degree of local population retention. It is also evident that this biogeographic isolation is periodically compromised by large ocean current oscillations in the equatorial and central Pacific Ocean that bring larval fishes from either Hawaii or the Line Islands, and may distribute Johnston Atoll originating larvae elsewhere as well. The reef fauna and oceanography of this atoll provides the circumstances for improving scientific insight into marine fish speciation and island biogeography.
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8
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Wilcox CL, Motomura H, Matsunuma M, Bowen BW. Phylogeography of Lionfishes (Pterois) Indicate Taxonomic Over Splitting and Hybrid Origin of the Invasive Pterois volitans. J Hered 2019. [PMID: 28637254 DOI: 10.1093/jhered/esx056] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The lionfish is an iconic marine fish, and recently renowned for a disastrous introduction into the West Atlantic. Genetic surveys of the putative invaders (Pterois volitans and Pterois miles) in their natural Indo-Pacific range can illuminate both topics. Previous research indicated that P. volitans and P. miles are sister species that hybridize in the invasive range, but hybridization in the native range is unknown. Here, we apply mtDNA COI and 2 nuclear introns (S7 RP1 and Gpd2) from 229 lionfish including the 2 invaders and 2 closely-related taxa (44 P. miles, 91 P. volitans, 31 Pterois lunulata, and 63 Pterois russelii) from 10 locations in their native ranges. Genetic data are supplemented with key morphological characters: dorsal, anal, and pectoral fin ray counts. We observed 2 lineages (d = 4.07%, 0.89%, and 2.75% at COI, S7 RP1, and Gpd2, respectively) among the 4 putative species: an Indian Ocean lineage represented by P. miles, and a Pacific Ocean lineage represented by P. lunulata and P. russelii. All specimens of the invasive P. volitans appear to be hybrids between the Indian Ocean P. miles and a Pacific lineage encompassing P. lunulata/russelii, a conclusion supported by both genetics and morphology. The divergences between Indian and Pacific forms are within the range of species-level partitions in fishes, and we recommend retention of the names P. miles and P. russelii for Indian and Pacific forms. The hybrid origin of the Atlantic invasion invokes the possibility of heterosis as a contributing factor to invasion success.
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Affiliation(s)
- Christie L Wilcox
- Hawai'i Institute of Marine Biology, Kane'ohe, HI.,Pacific Biosciences Research Center, University of Hawai'i at Mānoa, Honolulu, HI
| | | | - Mizuki Matsunuma
- Laboratory of Marine Biology, Faculty of Science, Kochi University, Kochi, Japan
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9
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Liu SYV, Tuanmu MN, Rachmawati R, Mahardika GN, Barber PH. Integrating phylogeographic and ecological niche approaches to delimitating cryptic lineages in the blue-green damselfish ( Chromis viridis). PeerJ 2019; 7:e7384. [PMID: 31392097 PMCID: PMC6677123 DOI: 10.7717/peerj.7384] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/30/2019] [Indexed: 12/22/2022] Open
Abstract
Species delimitation is challenging in sibling species/cryptic lineages because of the absence of clear diagnostic traits. However, integration of different approaches such as phylogeography and ecological niche comparison offers one potential approach to tease apart recently diverged lineages. In this study, we estimate the ecological niche divergence among lineages in Chromis viridis in a broad-scale phylogeographic framework to test whether the combination of these two approaches can effectively distinguish recently diverged lineages. Results from Cytb and Rag2 analyses identified two cryptic lineages (C. viridis A and C. viridis B) that diverged ∼3 Myr ago. Estimates of ecological niche divergence with 11 environmental parameters across the broad geographic range of these lineages showed overlapping ecological niches and niche conservatism. However, regardless of the incongruence between genetic and ecological niche divergence, the substantial genetic divergence between the two clades of C. viridis in both mtDNA and nuclear loci strong suggest that they are cryptic taxa.
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Affiliation(s)
- Shang Yin Vanson Liu
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Mao-Ning Tuanmu
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Rita Rachmawati
- Center for Fisheries Research, Ministry of Marine Affairs and Fisheries, Jakarta, Indonesia.,Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, USA
| | | | - Paul H Barber
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, USA
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10
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He S, Robitzch V, Hobbs JA, Travers MJ, Lozano‐Cortés D, Berumen ML, DiBattista JD. An examination of introgression and incomplete lineage sorting among three closely related species of chocolate-dipped damselfish (genus: Chromis). Ecol Evol 2019; 9:5468-5478. [PMID: 31110695 PMCID: PMC6509375 DOI: 10.1002/ece3.5142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 11/11/2022] Open
Abstract
AIM To determine the impact of ecological and environmental histories on the evolution of coral reef damselfishes at two adjacent marine biogeographic suture zones. LOCATION Indo-West Pacific, notably including two suture zones: Socotra and Christmas and Cocos/Keeling Islands. TAXON Chromis dimidiata, Chromis margaritifer, and Chromis fieldi. METHODS We utilized a combination of nuclear and mitochondrial genetic markers in addition to visual abundance survey data of these fishes. RESULTS Despite genetic patterns consistent with incomplete lineage sorting and relatively low genetic differentiation among the three studied Chromis species, there is evidence of hybridization between C. margaritifer and C. fieldi at Christmas Island based on molecular and visual identification. Introgression appears to be spreading westwards to other C. fieldi populations based on COI haplotype comparison. Moreover, the genetic distance between C. margaritifer and C. fieldi suggests that Pleistocene sea-level fluctuations may have contributed to allopatric divergence and secondary contact between these two closely related species. MAIN CONCLUSIONS Our study highlights that evolutionary processes in coral reef fishes operate differently between suture zones, possibly due to different ecological and environmental predispositions regulating secondary contact of sister species. While secondary contact likely led to hybridization and introgression at Christmas and Cocos/Keeling Islands, none of those processes seem present at Socotra for the chocolate-dipped damselfish. This difference is likely due to an environmental barrier caused by hydrodynamic regimes in the Gulf of Aden.
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Affiliation(s)
- Song He
- Division of Biological and Environmental Science and Engineering, Red Sea Research CenterKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
| | - Vanessa Robitzch
- Division of Biological and Environmental Science and Engineering, Red Sea Research CenterKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
| | - Jean‐Paul A. Hobbs
- School of Molecular and Life SciencesCurtin UniversityPerthWestern AustraliaAustralia
| | - Michael J. Travers
- Australian Institute of Marine ScienceIndian Oceans Marine Research CentreCrawleyWestern AustraliaAustralia
| | - Diego Lozano‐Cortés
- Division of Biological and Environmental Science and Engineering, Red Sea Research CenterKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
| | - Michael L. Berumen
- Division of Biological and Environmental Science and Engineering, Red Sea Research CenterKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
| | - Joseph D. DiBattista
- School of Molecular and Life SciencesCurtin UniversityPerthWestern AustraliaAustralia
- Australian Museum Research InstituteAustralian MuseumSydneyNew South WalesAustralia
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11
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Robertson DR, Dominguez-Dominguez O, Victor B, Simoes N. An Indo-Pacific damselfish ( Neopomacentrus cyanomos) in the Gulf of Mexico: origin and mode of introduction. PeerJ 2018; 6:e4328. [PMID: 29441235 PMCID: PMC5807916 DOI: 10.7717/peerj.4328] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 01/15/2018] [Indexed: 11/20/2022] Open
Abstract
The Indo-West Pacific (IWP) coral-reef damselfish Neopomacentrus cyanomos is well established across the south-west Gulf of Mexico (SwGoMx). Comparisons of mtDNA sequences of the SwGoMx population with those from conspecifics from 16 sites scattered across its native geographic range show that the SwGoMx population is derived from two of four native lineages: one from the north-west Pacific Ocean, the other from the northern Indian Ocean. Three hypotheses address how this species was introduced to the SwGoMX: (1) aquarium release; (2) borne by cargo-ship; and (3) carried by offshore petroleum platform (petro-platform). The first is unlikely because this species rarely features in the aquarium trade, and “N. cyanomos” traded to the USA from the sole IWP source we are aware of are a misidentified congener, N. taeniurus. The second hypothesis is unlikely because shipping has not been associated with the introduction of alien damselfishes, there is little international shipping between the IWP and the SwGoMx, and voyages between those areas would be lengthy and along environmentally unfavorable routes. Various lines of evidence support the third hypothesis: (i) bio-fouled petro-platforms represent artificial reefs that can sustain large and diverse populations of tropical reef-fishes, including N. cyanomos in the SwGoMx; (ii) relocation of such platforms has been implicated in trans-oceanic introductions leading to establishment of non-native populations of such fishes; and (iii) genetic characteristics of the SwGoMx population indicate that it was established by a large and diverse group of founders drawn from the IWP regions where many petro-platforms currently in the SwGoMx and other Atlantic offshore oilfields originated.
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Affiliation(s)
- D Ross Robertson
- Naos Marine Laboratory, Smithsonian Tropical Research Institute, Balboa, Republic of Panama
| | - Omar Dominguez-Dominguez
- Laboratorio de Biologia Acuatica, Facultad de Biologia, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacan, Mexico.,Laboratorio Nacional de Análisis y Síntesis Ecológica para la Conservación de Recursos Genéticos de México, Escuela Nacional de Estudios Superiores, Unidad Morelia, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico
| | - Benjamin Victor
- Guy Harvey Research Institute, Nova Southeastern University, Ft Lauderdale, FL, United States of America
| | - Nuno Simoes
- Unidad Multidisciplinaria en Docencia e Investigacion de Sisal, Facultad de Ciencias, UNAM, Sisal, Yucatan, Mexico.,Laboratorio Nacional de Resiliencia Costera, Unidad Académica de Yucatán, Universidad Nacional Autónoma de México, Sisal, Yucatán, Mexico.,Harte Institute for Gulf of Mexico Studies, Texas A&M University-Corpus Christi, Corpus Christi, TX, United States of America
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12
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Harrison HB, Berumen ML, Saenz-Agudelo P, Salas E, Williamson DH, Jones GP. Widespread hybridization and bidirectional introgression in sympatric species of coral reef fish. Mol Ecol 2018; 26:5692-5704. [PMID: 29080371 DOI: 10.1111/mec.14279] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 07/07/2017] [Accepted: 07/17/2017] [Indexed: 12/13/2022]
Abstract
Coral reefs are highly diverse ecosystems, where numerous closely related species often coexist. How new species arise and are maintained in these high geneflow environments have been long-standing conundrums. Hybridization and patterns of introgression between sympatric species provide a unique insight into the mechanisms of speciation and the maintenance of species boundaries. In this study, we investigate the extent of hybridization between two closely related species of coral reef fish: the common coral trout (Plectropomus leopardus) and the bar-cheek coral trout (Plectropomus maculatus). Using a complementary set of 25 microsatellite loci, we distinguish pure genotype classes from first- and later-generation hybrids, identifying 124 interspecific hybrids from a collection of 2,991 coral trout sampled in inshore and mid-shelf reefs of the southern Great Barrier Reef. Hybrids were ubiquitous among reefs, fertile and spanned multiple generations suggesting both ecological and evolutionary processes are acting to maintain species barriers. We elaborate on these finding to investigate the extent of genomic introgression and admixture from 2,271 SNP loci recovered from a ddRAD library of pure and hybrid individuals. An analysis of genomic clines on recovered loci indicates that 261 SNP loci deviate from a model of neutral introgression, of which 132 indicate a pattern of introgression consistent with selection favouring both hybrid and parental genotypes. Our findings indicate genome-wide, bidirectional introgression between two sympatric species of coral reef fishes and provide further support to a growing body of evidence for the role of hybridization in the evolution of coral reef fishes.
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Affiliation(s)
- Hugo B Harrison
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, Australia
| | - Michael L Berumen
- Division of Biological and Environmental Science and Engineering, Red Sea Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Pablo Saenz-Agudelo
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile
| | - Eva Salas
- Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, CA, USA.,California Academy of Sciences, San Francisco, CA, USA
| | - David H Williamson
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, Australia
| | - Geoffrey P Jones
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD, Australia.,College of Marine and Environmental Sciences, James Cook University, Townsville, QLD, Australia
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13
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Xu D, Molina WF, Yano CF, Zhang Y, de Oliveira EA, Lou B, de Bello Cioffi M. Comparative cytogenetics in three Sciaenid species (Teleostei, Perciformes): evidence of interspecific chromosomal diversification. Mol Cytogenet 2017; 10:37. [PMID: 29075328 PMCID: PMC5654061 DOI: 10.1186/s13039-017-0338-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 10/17/2017] [Indexed: 11/28/2022] Open
Abstract
Background Species belonging to the Sciaenidae family present a karyotype composed by 48 acrocentric chromosomes and are thus considered a striking example of chromosomal conservation. In this family, three species are extensively studied including Larimichthys crocea, Larimichthys polyactis and Nibea albiflora due to their importance in fishery and aquaculture in East Asia. Despite abundant data of population genetics available for some of them, cytogenetic information on these species is still scarce and obtained by conventional cytogenetic protocols. Therefore, a more detailed cytogenomic investigation was performed in these species to analyze their karyotype differentiation using conventional staining techniques and fluorescence in situ hybridization to map several repetitive DNAs. Results The three species showed a slight karyotype differentiation with 4sm + 2st + 42a in L. polyactis, 20st + 28a in L. crocea and 48a in N. albiflora. Additionally, the mapping of repetitive sequences further revealed a number of interspecific differences among them. Particularly, 18S and 5S rDNA sites showed syntenic arrangements in N. albiflora and non-syntenic arrangements in both Larimichthys species. The microsatellites (CA)15 and (GA)15 showed conspicuous terminal clusters in some chromosomes of all species. On the other hand, (CGG)10 repeats, Rex6 elements and U2 snRNA displayed a scattered distribution on the chromosomes. Conclusions Although the three Sciaenid species examined displayed a general pattern of karyotypic conservatism, we explored chromosomal diversification among them. The diversificated karyotypic macrostructure is followed by intergeneric evolutionary diversification of the repetitive sequences. The data indicate some degree of intergeneric evolutionary diversification at chromosomal level, and suggest the evolutionary dynamics among Sciaenid species, higher than previously thought. The present cytogenetic data provide new insight into the chromosomal diversification in Sciaenidae, and contribute to inferring the chromosomal rearrangements and trends of karyotype evolution in this fish group.
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Affiliation(s)
- Dongdong Xu
- Marine Fishery Institute of Zhejiang Province, Key Lab of Mariculture and Enhancement of Zhejiang Province, 316100 Zhoushan, Zhejiang Province People's Republic of China
| | - Wagner Franco Molina
- Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 3000, Natal, RN 59078-970 Brazil
| | - Cassia Fernanda Yano
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235, São Carlos, SP 13565-905 Brazil
| | - Yurong Zhang
- Marine Fishery Institute of Zhejiang Province, Key Lab of Mariculture and Enhancement of Zhejiang Province, 316100 Zhoushan, Zhejiang Province People's Republic of China
| | - Ezequiel Aguiar de Oliveira
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235, São Carlos, SP 13565-905 Brazil.,Secretaria de Estado de Educação de Mato Grosso - SEDUC-MT, Cuiabá, MT Brazil
| | - Bao Lou
- Marine Fishery Institute of Zhejiang Province, Key Lab of Mariculture and Enhancement of Zhejiang Province, 316100 Zhoushan, Zhejiang Province People's Republic of China
| | - Marcelo de Bello Cioffi
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235, São Carlos, SP 13565-905 Brazil
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14
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Getlekha N, Cioffi MDB, Maneechot N, Bertollo LAC, Supiwong W, Tanomtong A, Molina WF. Contrasting Evolutionary Paths Among Indo-Pacific Pomacentrus Species Promoted by Extensive Pericentric Inversions and Genome Organization of Repetitive Sequences. Zebrafish 2017; 15:45-54. [PMID: 29023226 DOI: 10.1089/zeb.2017.1484] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Pomacentrus (damselfishes) is one of the most characteristic groups of fishes in the Indo-Pacific coral reef. Its 77 described species exhibit a complex taxonomy with cryptic lineages across their extensive distribution. Periods of evolutionary divergences between them are very variable, and the cytogenetic events that followed their evolutionary diversification are largely unknown. In this respect, analyses of chromosomal divergence, within a phylogenetic perspective, are particularly informative regarding karyoevolutionary trends. As such, we conducted conventional cytogenetic and cytogenomic analyses in four Pomacentrus species (Pomacentrus similis, Pomacentrus auriventris, Pomacentrus moluccensis, and Pomacentrus cuneatus), through the mapping of repetitive DNA classes and transposable elements, including 18S rDNA, 5S rDNA, (CA)15, (GA)15, (CAA)10, Rex6, and U2 snDNA as markers. P. auriventris and P. similis, belonging to the Pomacentrus coelestis complex, have indistinguishable karyotypes (2n = 48; NF = 48), with a peculiar syntenic organization of ribosomal genes. On the other hand, P. moluccensis and P. cuneatus, belonging to another clade, exhibit very different karyotypes (2n = 48, NF = 86 and 92, respectively), with a large number of bi-armed chromosomes, where multiple pericentric inversions played a significant role in their karyotype organization. In this sense, different chromosomal pathways followed the phyletic diversification in the Pomacentrus genus, making possible the characterization of two well-contrasting species groups regarding their karyotype features. Despite this, pericentric inversions act as an effective postzygotic barrier in many organisms, which appear to be also the case for P. moluccensis and P. cuneatus; the extensive chromosomal similarities in the two species of P. coelestis complex suggest minor participation of chromosomal postzygotic barriers in the phyletic diversification of these species.
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Affiliation(s)
- Nuntaporn Getlekha
- 1 Department of Biology, Faculty of Science, Khon Kaen University , Khon Kaen, Thailand
| | - Marcelo de Bello Cioffi
- 2 Departamento de Genética e Evolução, Universidade Federal de São Carlos , São Paulo, Brazil
| | - Nuntiya Maneechot
- 1 Department of Biology, Faculty of Science, Khon Kaen University , Khon Kaen, Thailand
| | | | - Weerayuth Supiwong
- 3 Department of Fisheries, Faculty of Applied Science and Engineering, Khon Kaen University , Khon Kaen, Thailand
| | - Alongklod Tanomtong
- 1 Department of Biology, Faculty of Science, Khon Kaen University , Khon Kaen, Thailand .,4 Toxic Substances in Livestock and Aquatic Animals Research Group, KhonKaen University , Khon Kaen, Thailand
| | - Wagner Franco Molina
- 5 Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte , Natal, Brazil
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15
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Bangs MR, Oswald KJ, Greig TW, Leitner JK, Rankin DM, Quattro JM. Introgressive hybridization and species turnover in reservoirs: a case study involving endemic and invasive basses (Centrarchidae: Micropterus) in southeastern North America. CONSERV GENET 2017. [DOI: 10.1007/s10592-017-1018-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Eyer PA, Seltzer R, Reiner-Brodetzki T, Hefetz A. An integrative approach to untangling species delimitation in the Cataglyphis bicolor desert ant complex in Israel. Mol Phylogenet Evol 2017; 115:128-139. [PMID: 28774791 DOI: 10.1016/j.ympev.2017.07.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 06/22/2017] [Accepted: 07/26/2017] [Indexed: 10/19/2022]
Abstract
Although extensive research has been carried out on the desert ants in the genus Cataglyphis in recent years, some of the specific intra- and interspecific relationships remain elusive. The present study disentangles the phylogenetic relationships among the C. bicolor complex in Israel using an integrative approach based on genetic markers, morphometric measurements, and chemical analyses (cuticular hydrocarbons). Several species delimitation approaches based on four nuclear, two mitochondrial, and eleven microsatellite markers, as well as 16 body measurements and 56 chemical variables, were employed to deciphering the occurrence of cryptic species in our data set. Our findings support the occurrence of at least four distinct species in the C. bicolor group in Israel, one of which may be a complex of three more recent species. The findings confirm the distinctiveness of C. isis and C. holgerseni. They attest the presence of a recently discovered species, C. israelensis, in the central mountain ridge and the occurrence of another clade distributed from the Negev to the Mediterranean coast, comprising the species C. niger, C. savignyi, and C. drusus. Although these three species are separated on the basis of mtDNA, this subgrouping was not supported by any of the nuclear sequence markers nor by the microsatellite analysis. This genetic structure may thus either reflect a possible recent speciation, or a geographical structuring of a single species. Overall, using these different sources of evidence we locate our samples within a global phylogeny of the bicolor group and discuss the processes that underlie speciation in this group.
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Affiliation(s)
- P A Eyer
- Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel.
| | - R Seltzer
- Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - T Reiner-Brodetzki
- Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - A Hefetz
- Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
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17
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Bertrand JAM, Borsa P, Chen WJ. Phylogeography of the sergeants Abudefduf sexfasciatus and A. vaigiensis reveals complex introgression patterns between two widespread and sympatric Indo-West Pacific reef fishes. Mol Ecol 2017; 26:2527-2542. [PMID: 28160340 DOI: 10.1111/mec.14044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 01/19/2017] [Accepted: 01/25/2017] [Indexed: 01/02/2023]
Abstract
On evolutionary timescales, sea level oscillations lead to recurrent spatio-temporal variation in species distribution and population connectivity. In this situation, applying classical concepts of biogeography is challenging yet necessary to understand the mechanisms underlying biodiversity in highly diverse marine ecosystems such as coral reefs. We aimed at studying the outcomes of such complex biogeographic dynamics on reproductive isolation by sampling populations across a wide spatial range of a species-rich fish genus: the sergeants (Pomacentridae: Abudefduf). We generated a mutlilocus data set that included ten morpho-species from 32 Indo-West Pacific localities. We observed a pattern of mito-nuclear discordance in two common and widely distributed species: Abudefduf sexfasciatus and Abudefduf vaigiensis. The results showed three regional sublineages (Indian Ocean, Coral Triangle region, western Pacific) in A. sexfasciatus (0.6-1.5% divergence at cytb). The other species, A. vaigiensis, is polyphyletic and consists of three distinct genetic lineages (A, B and C) (9% divergence at cytb) whose geographic ranges overlap. Although A. vaigiensis A and A. sexfasciatus were found to be distinct based on nuclear information, A. vaigiensis A was found to be nested within A. sexfasciatus in the mitochondrial gene tree. A. sexfasciatus from the Coral Triangle region and A. vaigiensis A were not differentiated from each other at the mitochondrial locus. We then used coalescent-based simulation to characterize a spatially widespread but weak gene flow between the two species. We showed that these fishes are good candidates to investigate the evolutionary complexity of the discrepancies between phenotypic and genetic similarity in closely related species.
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Affiliation(s)
- Joris A M Bertrand
- Institute of Oceanography, National Taiwan University, N°1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan
| | - Philippe Borsa
- Institut de recherche pour le développement, UMR 250 'Ecologie marine tropicale des océans Pacifique et Indien', 101 promenade Roger-Laroque Anse Vata, BP A5, 98848 Nouméa cedex, New Caledonia
| | - Wei-Jen Chen
- Institute of Oceanography, National Taiwan University, N°1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan
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18
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Bernal MA, Gaither MR, Simison WB, Rocha LA. Introgression and selection shaped the evolutionary history of sympatric sister-species of coral reef fishes (genus: Haemulon). Mol Ecol 2016; 26:639-652. [PMID: 27873385 DOI: 10.1111/mec.13937] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/18/2016] [Accepted: 11/16/2016] [Indexed: 12/25/2022]
Abstract
Closely related marine species with large overlapping ranges provide opportunities to study mechanisms of speciation, particularly when there is evidence of gene flow between such lineages. Here, we focus on a case of hybridization between the sympatric sister-species Haemulon maculicauda and H. flaviguttatum, using Sanger sequencing of mitochondrial and nuclear loci, as well as 2422 single nucleotide polymorphisms (SNPs) obtained via restriction site-associated DNA sequencing (RADSeq). Mitochondrial markers revealed a shared haplotype for COI and low divergence for CytB and CR between the sister-species. On the other hand, complete lineage sorting was observed at the nuclear loci and most of the SNPs. Under neutral expectations, the smaller effective population size of mtDNA should lead to fixation of mutations faster than nDNA. Thus, these results suggest that hybridization in the recent past (0.174-0.263 Ma) led to introgression of the mtDNA, with little effect on the nuclear genome. Analyses of the SNP data revealed 28 loci potentially under divergent selection between the two species. The combination of mtDNA introgression and limited nuclear DNA introgression provides a mechanism for the evolution of independent lineages despite recurrent hybridization events. This study adds to the growing body of research that exemplifies how genetic divergence can be maintained in the presence of gene flow between closely related species.
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Affiliation(s)
- Moisés A Bernal
- Integrative Systems Biology Lab, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900 Thuwal, Kingdom of Saudi Arabia.,Institute for Biodiversity, Science and Sustainability, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, USA
| | - Michelle R Gaither
- Institute for Biodiversity, Science and Sustainability, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, USA.,School of Biological and Biomedical Sciences, Durham University, South Road, Durham, DH1 3LE, UK
| | - W Brian Simison
- Center for Comparative Genomics, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, USA
| | - Luiz A Rocha
- Institute for Biodiversity, Science and Sustainability, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, USA
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19
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Chang CH, Shao KT, Lin HY, Chiu YC, Lee MY, Liu SH, Lin PL. DNA barcodes of the native ray-finned fishes in Taiwan. Mol Ecol Resour 2016; 17:796-805. [DOI: 10.1111/1755-0998.12601] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/19/2016] [Accepted: 09/21/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Chia-Hao Chang
- Biodiversity Research Center; Academia Sinica; 128 Academia Road Sec. 2 Nankang Taipei 115 Taiwan
| | - Kwang-Tsao Shao
- Biodiversity Research Center; Academia Sinica; 128 Academia Road Sec. 2 Nankang Taipei 115 Taiwan
| | - Han-Yang Lin
- Biodiversity Research Center; Academia Sinica; 128 Academia Road Sec. 2 Nankang Taipei 115 Taiwan
| | - Yung-Chieh Chiu
- Department of Aquaculture; National Taiwan Ocean University; Keelung Taiwan
| | - Mao-Ying Lee
- Biodiversity Research Center; Academia Sinica; 128 Academia Road Sec. 2 Nankang Taipei 115 Taiwan
| | - Shih-Hui Liu
- Department of Biology; Saint Louis University; 3507 Laclede Avenue, Macelwane Hall St. Louis MO 63103 USA
| | - Pai-Lei Lin
- Biodiversity Research Center; Academia Sinica; 128 Academia Road Sec. 2 Nankang Taipei 115 Taiwan
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20
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Getlekha N, Cioffi MDB, Yano CF, Maneechot N, Bertollo LAC, Supiwong W, Tanomtong A, Molina WF. Chromosome mapping of repetitive DNAs in sergeant major fishes (Abudefdufinae, Pomacentridae): a general view on the chromosomal conservatism of the genus. Genetica 2016; 144:567-576. [PMID: 27660254 DOI: 10.1007/s10709-016-9925-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 09/17/2016] [Indexed: 12/01/2022]
Abstract
Species of the Abudefduf genus (sergeant-majors) are widely distributed in the Indian, Pacific and Atlantic oceans, with large schools inhabiting rocky coastal regions and coral reefs. This genus consists of twenty recognized species are of generalist habit, showing typical characteristics of colonizers. Some populations maintain gene flow between large oceanic areas, a condition that may influence their cytogenetic features. A number of species have been shown to be invaders and able to hybridize with local species. However, cytogenetic data in this genus are restricted to few species. In this way, the present study includes the chromosomal investigation, using conventional (Giemsa staining, Ag-NOR and C-banding) and molecular (in situ mapping of six different repetitive DNA classes) approaches in four Abudefduf species from different oceanic regions (A. bengalensis and A. sexfasciatus from the Indo-Pacific, A. vaigiensis from the Indian and A. saxatilis from the Atlantic oceans, respectively), to investigate the evolutionary events associated with the chromosomal diversification in this group. All species share a similar karyotype (2n = 48; NF = 52), except A. sexfasciatus (2n = 48; NF = 50), which possesses a characteristic pericentric inversion in the NOR-bearing chromosomal pair. Mapping of repetitive sequences suggests a chromosomal conservatism in this genus. The high karyotypic similarity between allopatric species of Abudefduf may be related to the success of natural viable hybrids among species with recent secondary contact.
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Affiliation(s)
- Nuntaporn Getlekha
- Department of Biology, Faculty of Science, Khon Kaen University, Muang, Khon Kaen, Thailand
| | - Marcelo de Bello Cioffi
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Cassia Fernanda Yano
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Nuntiya Maneechot
- Department of Biology, Faculty of Science, Khon Kaen University, Muang, Khon Kaen, Thailand
| | | | - Weerayuth Supiwong
- Department of Fisheries, Faculty of Applied Science and Engineering, Khon Kaen University, Nong Khai Campus, Muang, Nong Khai, Thailand
| | - Alongklod Tanomtong
- Department of Biology, Faculty of Science, Khon Kaen University, Muang, Khon Kaen, Thailand.,Toxic Substances in Livestock and Aquatic Animals Research Group, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand
| | - Wagner Franco Molina
- Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil.
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21
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DiBattista JD, Whitney J, Craig MT, Hobbs JPA, Rocha LA, Feldheim KA, Berumen ML, Bowen BW. Surgeons and suture zones: Hybridization among four surgeonfish species in the Indo-Pacific with variable evolutionary outcomes. Mol Phylogenet Evol 2016; 101:203-215. [DOI: 10.1016/j.ympev.2016.04.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 04/12/2016] [Accepted: 04/29/2016] [Indexed: 11/27/2022]
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22
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Glotzbecker GJ, Walters DM, Blum MJ. Rapid movement and instability of an invasive hybrid swarm. Evol Appl 2016; 9:741-55. [PMID: 27330551 PMCID: PMC4908461 DOI: 10.1111/eva.12371] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 02/08/2016] [Indexed: 12/15/2022] Open
Abstract
Unstable hybrid swarms that arise following the introduction of non‐native species can overwhelm native congeners, yet the stability of invasive hybrid swarms has not been well documented over time. Here, we examine genetic variation and clinal stability across a recently formed hybrid swarm involving native blacktail shiner (Cyprinella venusta) and non‐native red shiner (C. lutrensis) in the Upper Coosa River basin, which is widely considered to be a global hot spot of aquatic biodiversity. Examination of phenotypic, multilocus genotypic, and mitochondrial haplotype variability between 2005 and 2011 revealed that the proportion of hybrids has increased over time, with more than a third of all sampled individuals exhibiting admixture in the final year of sampling. Comparisons of clines over time indicated that the hybrid swarm has been rapidly progressing upstream, but at a declining and slower pace than rates estimated from historical collection records. Clinal comparisons also showed that the hybrid swarm has been expanding and contracting over time. Additionally, we documented the presence of red shiner and hybrids farther downstream than prior studies have detected, which suggests that congeners in the Coosa River basin, including all remaining populations of the threatened blue shiner (Cyprinella caerulea), are at greater risk than previously thought.
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Affiliation(s)
| | - David M Walters
- U.S. Geological Survey Fort Collins Science Center Fort Collins CO USA
| | - Michael J Blum
- Department of Ecology and Evolutionary BiologyTulane UniversityNew OrleansLAUSA; Tulane - Xavier Center for Bioenvironmental ResearchTulane UniversityNew OrleansLAUSA
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23
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Bowen BW. The Three Domains of Conservation Genetics: Case Histories from Hawaiian Waters. J Hered 2016; 107:309-17. [PMID: 27001936 DOI: 10.1093/jhered/esw018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 03/17/2016] [Indexed: 11/14/2022] Open
Abstract
The scientific field of conservation biology is dominated by 3 specialties: phylogenetics, ecology, and evolution. Under this triad, phylogenetics is oriented towards the past history of biodiversity, conserving the divergent branches in the tree of life. The ecological component is rooted in the present, maintaining the contemporary life support systems for biodiversity. Evolutionary conservation (as defined here) is concerned with preserving the raw materials for generating future biodiversity. All 3 domains can be documented with genetic case histories in the waters of the Hawaiian Archipelago, an isolated chain of volcanic islands with 2 types of biodiversity: colonists, and new species that arose from colonists. This review demonstrates that 1) phylogenetic studies have identified previously unknown branches in the tree of life that are endemic to Hawaiian waters; 2) population genetic surveys define isolated marine ecosystems as management units, and 3) phylogeographic analyses illustrate the pathways of colonization that can enhance future biodiversity. Conventional molecular markers have advanced all 3 domains in conservation biology over the last 3 decades, and recent advances in genomics are especially valuable for understanding the foundations of future evolutionary diversity.
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Affiliation(s)
- Brian W Bowen
- From the Hawai'i Institute of Marine Biology, PO Box 1346, Kaneohe, HI 96744.
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24
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Bouchemousse S, Lévêque L, Dubois G, Viard F. Co-occurrence and reproductive synchrony do not ensure hybridization between an alien tunicate and its interfertile native congener. Evol Ecol 2015. [DOI: 10.1007/s10682-015-9788-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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