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Braulik GT, Taylor BL, Minton G, Notarbartolo di Sciara G, Collins T, Rojas-Bracho L, Crespo EA, Ponnampalam LS, Double MC, Reeves RR. Red-list status and extinction risk of the world's whales, dolphins, and porpoises. Conserv Biol 2023; 37:e14090. [PMID: 37246556 DOI: 10.1111/cobi.14090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/06/2023] [Accepted: 03/15/2023] [Indexed: 05/30/2023]
Abstract
To understand the scope and scale of the loss of biodiversity, tools are required that can be applied in a standardized manner to all species globally, spanning realms from land to the open ocean. We used data from the International Union for the Conservation of Nature Red List to provide a synthesis of the conservation status and extinction risk of cetaceans. One in 4 cetacean species (26% of 92 species) was threatened with extinction (i.e., critically endangered, endangered, or vulnerable) and 11% were near threatened. Ten percent of cetacean species were data deficient, and we predicted that 2-3 of these species may also be threatened. The proportion of threatened cetaceans has increased: 15% in 1991, 19% in 2008, and 26% in 2021. The assessed conservation status of 20% of species has worsened from 2008 to 2021, and only 3 moved into categories of lesser threat. Cetacean species with small geographic ranges were more likely to be listed as threatened than those with large ranges, and those that occur in freshwater (100% of species) and coastal (60% of species) habitats were under the greatest threat. Analysis of odontocete species distributions revealed a global hotspot of threatened small cetaceans in Southeast Asia, in an area encompassing the Coral Triangle and extending through nearshore waters of the Bay of Bengal, northern Australia, and Papua New Guinea and into the coastal waters of China. Improved management of fisheries to limit overfishing and reduce bycatch is urgently needed to avoid extinctions or further declines, especially in coastal areas of Asia, Africa, and South America.
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Affiliation(s)
- Gill T Braulik
- Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, St Andrews, Fife, UK
- IUCN Species Survival Commission, Cetacean Specialist Group
- IUCN Marine Mammal Protected Areas Task Force
| | | | - Gianna Minton
- IUCN Species Survival Commission, Cetacean Specialist Group
- IUCN Marine Mammal Protected Areas Task Force
- Megaptera Marine Conservation, The Hague, The Netherlands
| | - Giuseppe Notarbartolo di Sciara
- IUCN Species Survival Commission, Cetacean Specialist Group
- IUCN Marine Mammal Protected Areas Task Force
- Tethys Research Institute, Milano, Italy
| | - Tim Collins
- IUCN Species Survival Commission, Cetacean Specialist Group
- IUCN Marine Mammal Protected Areas Task Force
- Global Conservation, Wildlife Conservation Society, Bronx, New York, USA
| | - Lorenzo Rojas-Bracho
- IUCN Species Survival Commission, Cetacean Specialist Group
- IUCN Marine Mammal Protected Areas Task Force
- Ocean Wise, Vancouver, British Columbia, Canada
| | - Enrique A Crespo
- IUCN Species Survival Commission, Cetacean Specialist Group
- Laboratorio de Mamíferos Marinos, (CESIMAR, CONICET), Puerto Madryn, Argentina
| | - Louisa S Ponnampalam
- IUCN Species Survival Commission, Cetacean Specialist Group
- The MareCet Research Organization, Subang Jaya, Selangor, Malaysia
| | - Michael C Double
- IUCN Species Survival Commission, Cetacean Specialist Group
- Australian Antarctic Division, Department of Climate Change, Energy, the Environment and Water, Kingston, Tasmania, Australia
| | - Randall R Reeves
- IUCN Species Survival Commission, Cetacean Specialist Group
- Committee of Scientific Advisers, Marine Mammal Commission, Bethesda, Maryland, USA
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Metcalfe K, White L, Lee ME, Fay JM, Abitsi G, Parnell RJ, Smith RJ, Agamboue PD, Bayet JP, Mve Beh JH, Bongo S, Boussamba F, De Bruyne G, Cardiec F, Chartrain E, Collins T, Doherty PD, Formia A, Gately M, Gnandji MS, Ikoubou I, Kema Kema JR, Kombila K, Kongo PE, Manfoumbi JC, Maxwell SM, Mba Asseko GH, McClellan CM, Minton G, Ndjimbou SO, Nkoane Ndoutoume G, Bibang Bi Nguema JN, Nkizogho T, Nzegoue J, Kouerey Oliwina CK, Otsagha FM, Savarit D, Pikesley SK, du Plessis P, Rainey H, Kingbell Rockombeny LAD, Rosenbaum HC, Segan D, Sounguet G, Stokes EJ, Tilley D, Vilela R, Viljoen W, Weber SB, Witt MJ, Godley BJ. Fulfilling global marine commitments; lessons learned from Gabon. Conserv Lett 2022. [DOI: 10.1111/conl.12872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Kristian Metcalfe
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter Penryn Campus Penryn UK
| | - Lee White
- Ministère des Forêts de la Mer et de l'Environnement Libreville Gabon
- Institut de Recherche en Ecologie Tropicale Libreville Gabon
- African Forest Ecology Group, School of Natural Sciences University of Stirling Stirling UK
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
| | - Michelle E. Lee
- Institut de Recherche en Ecologie Tropicale Libreville Gabon
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
- Nicholas School of the Environment Duke University Durham North Carolina USA
| | - J. Michael Fay
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
| | - Gaspard Abitsi
- Wildlife Conservation Society (WCS) Gabon Program Libreville Gabon
| | | | - Robert J. Smith
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation University of Kent Canterbury UK
| | | | - Jean Pierre Bayet
- Ibonga ‐ Association pour la Connaissance et la Protection de L'Environnement (Ibonga‐ACPE) Gamba Gabon
| | - Jean Hervé Mve Beh
- Centre National de la Recherche Scientifique (CENAREST) Libreville Gabon
- Direction Générale des Ecosystèmes Aquatiques Ministère des Forêts, de la Mer et de l'Environnement Libreville Gabon
| | - Serge Bongo
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
- Agence Nationale des Pêches et de l'Aquaculture Libreville Gabon
| | | | | | - Floriane Cardiec
- Wildlife Conservation Society (WCS) Gabon Program Libreville Gabon
| | | | - Tim Collins
- Wildlife Conservation Society (WCS) Marine Program Bronx New York USA
| | - Philip D. Doherty
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter Penryn Campus Penryn UK
| | - Angela Formia
- Wildlife Conservation Society (WCS) Gabon Program Libreville Gabon
- Department of Biology University of Florence Sesto Fiorentino (FI) Italy
- African Aquatic Conservation Fund (AACF) Joal Senegal
| | - Mark Gately
- Wildlife Conservation Society (WCS) Congo Program Brazzaville Democratic Republic of the Congo
- Wildlife Conservation Society (WCS) Madagascar and the West Indian Ocean Kigali Rwanda
| | - Micheline Schummer Gnandji
- Direction Générale des Pêches et de l'Aquaculture Ministère de l'Agriculture de l'Elevage de la Pêche et de la Sécurité Alimentaire Boulevard Triomphale Libreville Gabon
| | | | | | - Koumba Kombila
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
| | | | - Jean Churley Manfoumbi
- Ibonga ‐ Association pour la Connaissance et la Protection de L'Environnement (Ibonga‐ACPE) Gamba Gabon
- The Nature Conservancy (TNC) Libreville Gabon
| | - Sara M. Maxwell
- School of Interdisciplinary Arts and Sciences University of Washington Bothell Campus Bothell Washington USA
| | | | - Catherine M. McClellan
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter Penryn Campus Penryn UK
- Manga Cap Estérias Libreville Gabon
- Conservation des Espèces Marines (CEM) Abidjan Côte d'Ivoire
| | - Gianna Minton
- Megaptera Marine Conservation Wassenaar The Netherlands
| | | | | | | | - Teddy Nkizogho
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
| | - Jacob Nzegoue
- Wildlife Conservation Society (WCS) Gabon Program Libreville Gabon
| | | | | | - Diane Savarit
- Wildlife Conservation Society (WCS) Gabon Program Libreville Gabon
- The Nature Conservancy (TNC) Libreville Gabon
| | - Stephen K. Pikesley
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter Penryn Campus Penryn UK
| | | | - Hugo Rainey
- Wildlife Conservation Society Global Conservation Program Bronx New York USA
| | | | - Howard C. Rosenbaum
- Wildlife Conservation Society Ocean Giants Program Bronx New York USA
- Department of Ecology, Evolution and Environmental Biology Columbia University New York New York USA
| | - Dan Segan
- Wildlife Conservation Society Global Conservation Program Bronx New York USA
- Tahoe Regional Planning Agency Stateline Nevada USA
| | - Guy‐Philippe Sounguet
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
- Agence Nationale des Pêches et de l'Aquaculture Libreville Gabon
| | - Emma J. Stokes
- Wildlife Conservation Society (WCS) Central Africa & Gulf of Guinea Kigali Rwanda
| | - Dominic Tilley
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter Penryn Campus Penryn UK
| | - Raul Vilela
- Wildlife Conservation Society (WCS) Gabon Program Libreville Gabon
| | - Wynand Viljoen
- Agence Nationale des Parcs Nationaux (ANPN) Libreville Gabon
| | - Sam B. Weber
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter Penryn Campus Penryn UK
| | - Matthew J. Witt
- Environmental Biology Group, College of Life and Environmental Sciences, Hatherly Laboratories University of Exeter Exeter UK
| | - Brendan J. Godley
- Centre for Ecology and Conservation, College of Life and Environmental Sciences University of Exeter Penryn Campus Penryn UK
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3
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Gray H, van Waerebeek K, Owen J, Collins T, Minton G, Ponnampalam L, Willson A, Baldwin R, Hoelzel AR. Evolutionary drivers of morphological differentiation among three bottlenose dolphin lineages, Tursiops spp. (Delphinidae), in the northwest Indian Ocean utilizing linear and geometric morphometric techniques. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Local adaptation and adaptive radiations are typically associated with phenotypic variation suited to alternative environments. In the marine environment, the nature of relevant ecological or environmental transitions is poorly understood, especially for highly mobile species. Here we compare three genetic lineages in the genus Tursiops (bottlenose dolphins), using linear measurements and geometric morphometric techniques, in the context of environmental variation in the northwest Indian Ocean. Cranial morphology was clearly differentiated comparing Tursiops truncatus and Tursiops aduncus, while a recently discovered genetic lineage, found in the Arabian Sea, was morphologically most similar to T. aduncus from the same region, but distinct for various measures, particularly metrics associated with the lateral dimension of the skull. The extent of divergence between T. truncatus and T. aduncus compared to differences between the T. aduncus lineages is consistent with the recent phylogeny for these species. Therefore, with the corroboration of genetic and morphological inference, we propose two conservation units of T. aduncus be recognized in the region at a sub-specific level so that their conservation can be managed effectively. We consider possible evolutionary mechanisms associated with regional habitat characteristics and the exploitation of distinct prey resources.
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Affiliation(s)
- Howard Gray
- Department of Biosciences, University of Durham, South Road, Durham DH1 3LE, UK
| | | | - Joseph Owen
- Department of Archaeology, Simon Fraser University, Education Building 9635, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Tim Collins
- Wildlife Conservation Society Ocean Giants Program, 2300 Southern Boulevard, Bronx, NY 10460-1099, USA
| | - Gianna Minton
- Megaptera Marine Conservation, 2242PT Den Haag, The Netherlands
| | | | - Andrew Willson
- Future Seas Global SPC, PO Box 286, Postal Code 116, Muscat, Sultanate of Oman
| | - Robert Baldwin
- Five Oceans Environmental Services, PO Box 660, PC131, Ruwi, Sultanate of Oman
| | - A Rus Hoelzel
- Department of Biosciences, University of Durham, South Road, Durham DH1 3LE, UK
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4
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Moura AE, Shreves K, Pilot M, Andrews KR, Moore DM, Kishida T, Möller L, Natoli A, Gaspari S, McGowen M, Chen I, Gray H, Gore M, Culloch RM, Kiani MS, Willson MS, Bulushi A, Collins T, Baldwin R, Willson A, Minton G, Ponnampalam L, Hoelzel AR. Corrigendum to "Phylogenomics of the genus Tursiops and closely related delphininae reveals extensive reticulation among lineages and provides inference about eco-evolutionary drivers" [Mol. Phylogenet. Evol. 146 (2020) 106756]. Mol Phylogenet Evol 2021; 157:107047. [PMID: 33431184 DOI: 10.1016/j.ympev.2020.107047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Andre E Moura
- Museum and Institute of Zoology, Polish Academy of Sciences, Poland; School of Life Sciences, University of Lincoln, UK.
| | - Kypher Shreves
- School of Life Sciences, University of Lincoln, UK; Institute of Medical Sciences, School of Medical Sciences, University of Aberdeen, UK
| | - Małgorzata Pilot
- Museum and Institute of Zoology, Polish Academy of Sciences, Poland; School of Life Sciences, University of Lincoln, UK
| | - Kimberly R Andrews
- Institute for Bioinformatics and Evolutionary Studies (IBEST), University of Idaho, USA
| | | | | | - Luciana Möller
- College of Science and Engineering, Flinders University, Australia
| | - Ada Natoli
- College of Natural and Health Sciences, Zayed University, United Arab Emirates
| | - Stefania Gaspari
- Consiglio Nazionale delle Ricerche-Istituto di Scienze Marine, Ancona, Italy
| | | | - Ing Chen
- Division of Science, Yale-NUS College, Singapore
| | - Howard Gray
- School of Biosciences, Durham University, UK
| | | | - Ross M Culloch
- School of Biosciences, Durham University, UK; Marine Scotland Science, Scottish Government, Marine Laboratory, UK
| | | | | | | | - Tim Collins
- Ocean Giants Program, Wildlife Conservation Society, USA
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5
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Amaral AR, Chanfana C, Smith BD, Mansur R, Collins T, Baldwin R, Minton G, Parra GJ, Krützen M, Jefferson TA, Karczmarski L, Guissamulo A, Brownell RL, Rosenbaum HC. Genomics of Population Differentiation in Humpback Dolphins, Sousa spp. in the Indo-Pacific Ocean. J Hered 2020; 111:652-660. [PMID: 33475708 DOI: 10.1093/jhered/esaa055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 11/30/2020] [Indexed: 11/13/2022] Open
Abstract
Speciation is a fundamental process in evolution and crucial to the formation of biodiversity. It is a continuous and complex process, which can involve multiple interacting barriers leading to heterogeneous genomic landscapes with various peaks of divergence among populations. In this study, we used a population genomics approach to gain insights on the speciation process and to understand the population structure within the genus Sousa across its distribution in the Indo-Pacific region. We found 5 distinct clusters, corresponding to S. plumbea along the eastern African coast and the Arabian Sea, the Bangladesh population, S. chinensis off Thailand and S. sahulensis off Australian waters. We suggest that the high level of differentiation found, even across geographically close areas, is likely determined by different oceanographic features such as sea surface temperature and primary productivity.
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Affiliation(s)
- Ana R Amaral
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY.,Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências Universidade de Lisboa, Campo Grande, Lisboa, Portugal
| | - Cátia Chanfana
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências Universidade de Lisboa, Campo Grande, Lisboa, Portugal
| | - Brian D Smith
- Wildlife Conservation Society, Ocean Giants Program, Bronx, NY
| | - Rubaiyat Mansur
- Wildlife Conservation Society, Ocean Giants Program, Bronx, NY
| | - Tim Collins
- Wildlife Conservation Society, Ocean Giants Program, Bronx, NY
| | | | - Gianna Minton
- Megaptera Marine Conservation, The Hague, The Netherlands
| | - Guido J Parra
- Cetacean Ecology, Behaviour and Evolution Lab, College of Science and Engineering, Flinders University, Adelaide, SA, Australia
| | - Michael Krützen
- Evolutionary Genetics Group, Department of Anthropology, University of Zurich, CH Zurich, Switzerland
| | | | - Leszek Karczmarski
- Division of Cetacean Ecology and Division of Comparative Behavioural Ecology, Cetacea Research Institute, Lantau, Hong Kong.,Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Hatfield, Pretoria, South Africa
| | - Almeida Guissamulo
- Universidade Eduardo Mondlane, Museu de Historia Natural, Praca Travessia do Zambeze, Maputo, Mozambique
| | - Robert L Brownell
- NOAA Fisheries, Southwest Fisheries Science Center, La Jolla Shores Drive, La Jolla, CA
| | - Howard C Rosenbaum
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY.,Wildlife Conservation Society, Ocean Giants Program, Bronx, NY
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6
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Cerchio S, Willson A, Leroy EC, Muirhead C, Al Harthi S, Baldwin R, Cholewiak D, Collins T, Minton G, Rasoloarijao T, Rogers TL, Sarrouf Willson M. A new blue whale song-type described for the Arabian Sea and Western Indian Ocean. ENDANGER SPECIES RES 2020. [DOI: 10.3354/esr01096] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Blue whales Balaenoptera musculus in the Indian Ocean (IO) are currently thought to represent 2 or 3 subspecies (B. m. intermedia, B. m. brevicauda, B. m. indica), and believed to be structured into 4 populations, each with a diagnostic song-type. Here we describe a previously unreported song-type that implies the probable existence of a population that has been undetected or conflated with another population. The novel song-type was recorded off Oman in the northern IO/Arabian Sea, off the western Chagos Archipelago in the equatorial central IO, and off Madagascar in the southwestern IO. As this is the only blue whale song that has been identified in the western Arabian Sea, we label it the ‘Northwest Indian Ocean’ song-type to distinguish it from other regional song-types. Spatiotemporal variation suggested a distribution west of 70°E, with potential affinity for the northern IO/Arabian Sea, and only minor presence in the southwestern IO. Timing of presence off Oman suggested that intensive illegal Soviet whaling that took 1294 blue whales in the 1960s likely targeted this population, as opposed to the more widely distributed ‘Sri Lanka’ acoustic population as previously assumed. Based upon geographic distribution and potential aseasonal reproduction found in the Soviet catch data, we suggest that if there is a northern IO subspecies (B. m. indica), it is likely this population. Moreover, the potentially restricted range, intensive historic whaling, and the fact that the song-type has been previously undetected, suggests a small population that is in critical need of status assessment and conservation action.
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Affiliation(s)
- S Cerchio
- African Aquatic Conservation Fund, Chilmark, MA 02535, USA
- New England Aquarium, Anderson Cabot Center for Ocean Life, Boston, MA 02110, USA
- Center for Coastal Studies, Provincetown, MA 02657, USA
| | - A Willson
- Five Oceans Environmental Services, Shatti al Qurm, Muscat PC131, Sultanate of Oman
| | - EC Leroy
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - C Muirhead
- New England Aquarium, Anderson Cabot Center for Ocean Life, Boston, MA 02110, USA
- Division of Marine Science and Conservation, Duke University Marine Laboratory, Beaufort, NC 28516, USA
| | - S Al Harthi
- Environment Society of Oman, Ruwi PC112, Sultanate of Oman
| | - R Baldwin
- Five Oceans Environmental Services, Shatti al Qurm, Muscat PC131, Sultanate of Oman
| | - D Cholewiak
- NOAA Fisheries, Northeast Fisheries Science Center, Protected Species Branch, Woods Hole, MA 02543, USA
| | - T Collins
- Wildlife Conservation Society, Ocean Giants Program, Bronx, NY 10460, USA
| | - G Minton
- Megaptera Marine Conservation, The Hague 2242 PT, Netherlands
| | - T Rasoloarijao
- African Aquatic Conservation Fund, Chilmark, MA 02535, USA
- Institut Halieutique et des Sciences Marines, Toliara 601, Madagascar
| | - TL Rogers
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
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Hines E, Ponnampalam LS, Junchompoo C, Peter C, Vu L, Huynh T, Caillat M, Johnson AF, Minton G, Lewison RL, Verutes GM. Getting to the bottom of bycatch: a GIS-based toolbox to assess the risk of marine mammal bycatch. ENDANGER SPECIES RES 2020. [DOI: 10.3354/esr01037] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Marine mammal bycatch poses a particular challenge in developing countries, where data to document bycatch and its effects are often lacking. Using the Bycatch Risk Assessment (ByRA) toolkit, based on InVEST open-source models, we chose 4 field sites in Southeast Asia with varying amounts of data on marine mammals and fishing occurrence: Trat province in the eastern Gulf of Thailand, the Sibu-Tinggi Islands and Kuching Bay, Malaysia, and Kien Giang Biosphere Reserve in southwestern Vietnam. These field sites have similar species of coastal marine mammals, small-scale and commercial fisheries, and support for research from universities and/or management. In Thailand and Kuching, results showed changing patterns of fishing and Irrawaddy dolphin Orcaella brevirostris habitat use across seasons, showing how bycatch risk could change throughout the year. Risk maps for dugongs Dugong dugon in peninsular Malaysia highlighted patterns of bycatch risk concentrated around a mainland fishing pier, and revealed high risk in a northern subregion. In Vietnam, first maps of bycatch risk for the Irrawaddy dolphin showed the highest risk driven by intensive use of gillnets and trawling gear. ByRA pinpointed areas of spatial and seasonal bycatch exposure, and estimated the consequence of bycatch on local species, providing managers with critical information on where to focus bycatch mitigation and meet new global standards for US Marine Mammal Protection Act and other international regulation (e.g. Official Journal of the European Union 2019; Regulation 2019/1241) compliance. The toolbox, a transferable open-source tool, can be used to guide fisheries management, marine mammal conservation, spatial planning, and further research.
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Affiliation(s)
- E Hines
- Estuary & Ocean Science Center, and Department of Geography & Environment, San Francisco State University, Tiburon, CA 94920, USA
| | - LS Ponnampalam
- The MareCet Research Organization, 5, Jalan USJ 12/1B 47630 Subang Jaya, Selangor, Malaysia
| | - C Junchompoo
- Department of Marine and Coastal Resources, Ministry of Natural Resources and Environment, Chaeng Watthana Road, Lak Si District, Bangkok 10210, Thailand
| | - C Peter
- Universiti Malaysia Sarawak, Jalan Datuk Mohammad Musa, 94300 Kota Samarahan, Sarawak, Malaysia
| | - L Vu
- Vietnam Marine Megafauna Network, Center for Biodiversity Conservation and Endangered Species, 24, Street No 13, Lakeview City, Ho Chi Minh City, Vietnam
| | - T Huynh
- Southern Institute of Ecology, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi, Ben Nghe, District 1, Ho Chi Minh City, Vietnam
- Graduate School of Natural Science and Technology, Kanazawa University, Kakumamachi, Kanazawa, Ishikawa 920-1164, Japan
| | - M Caillat
- Environmental Defense Fund, San Francisco, CA 94105, USA
| | - AF Johnson
- MarFishEco Fisheries Consultants, 67/6 Brunswick Street, Edinburgh EH7 5HT, UK
- The Lyell Centre, Institute of Life and Earth Sciences, School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - G Minton
- Megaptera Marine Conservation, Laan van Rhemen van Rhemenshuizen 14, 2242 PT Wassenaar, The Netherlands
| | - RL Lewison
- Department of Biology, San Diego State University, CA 92182, USA
| | - GM Verutes
- Faculty of Political and Social Sciences, Universidade de Santiago de Compostela, Praza do Obradoiro, 0, 15705 Santiago de Compostela, A Coruña, Spain
- Campus Do*Mar, International Campus of Excellence, 36310 Vigo, Spain
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8
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Moura AE, Shreves K, Pilot M, Andrews KR, Moore DM, Kishida T, Möller L, Natoli A, Gaspari S, McGowen M, Chen I, Gray H, Gore M, Culloch RM, Kiani MS, Willson MS, Bulushi A, Collins T, Baldwin R, Willson A, Minton G, Ponnampalam L, Hoelzel AR. Phylogenomics of the genus Tursiops and closely related Delphininae reveals extensive reticulation among lineages and provides inference about eco-evolutionary drivers. Mol Phylogenet Evol 2020; 146:106756. [DOI: 10.1016/j.ympev.2020.106756] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/02/2020] [Accepted: 01/28/2020] [Indexed: 12/30/2022]
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9
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Rosenbaum HC, Kershaw F, Mendez M, Pomilla C, Leslie MS, Findlay KP, Best PB, Collins T, Vely M, Engel MH, Baldwin R, Minton G, Meÿer M, Flórez-González L, Poole MM, Hauser N, Garrigue C, Brasseur M, Bannister J, Anderson M, Olavarría C, Baker CS. First circumglobal assessment of Southern Hemisphere humpback whale mitochondrial genetic variation and implications for management. ENDANGER SPECIES RES 2017. [DOI: 10.3354/esr00822] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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10
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Kershaw F, Carvalho I, Loo J, Pomilla C, Best PB, Findlay KP, Cerchio S, Collins T, Engel MH, Minton G, Ersts P, Barendse J, Kotze PGH, Razafindrakoto Y, Ngouessono S, Meÿer M, Thornton M, Rosenbaum HC. Multiple processes drive genetic structure of humpback whale (Megaptera novaeangliae) populations across spatial scales. Mol Ecol 2017; 26:977-994. [DOI: 10.1111/mec.13943] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 10/01/2016] [Accepted: 11/16/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Francine Kershaw
- Columbia University; 116th Street and Broadway New York NY 10027 USA
| | - Inês Carvalho
- Population and Conservation Genetics Group; Instituto Gulbenkian de Ciência; Rua da Quinta Grande, 6 2780-156 Oeiras Portugal
- Centre for Environmental and Marine Studies (CESAM); Universidade de Aveiro; Campus Universitário de Santiago 3810-193 Aveiro Portugal
| | - Jacqueline Loo
- Department of Biology; New York University; 100 Washington Square New York NY 10012 USA
| | - Cristina Pomilla
- Wellcome Trust Sanger Institute; Wellcome Trust Genome Campus Hinxton Cambridge CB10 1SA UK
| | - Peter B. Best
- Mammal Research Institute; University of Pretoria; c/o Iziko South African Museum, P.O. Box 61 Cape Town 8000 South Africa
| | - Ken P. Findlay
- Mammal Research Institute; University of Pretoria; c/o Iziko South African Museum, P.O. Box 61 Cape Town 8000 South Africa
| | - Salvatore Cerchio
- Wildlife Conservation Society; Ocean Giants Program; 2300 Southern Blvd. Bronx NY 10460-1099 USA
| | - Tim Collins
- Wildlife Conservation Society; Ocean Giants Program; 2300 Southern Blvd. Bronx NY 10460-1099 USA
- Environment Society of Oman; P.O. Box 3955 PC 112 Ruwi Sultanate of Oman
| | - Marcia H. Engel
- Humpback Whale Project/Humpback Whale Institute; Rua Barão do Rio Branco, 125 Caravelas Bahia Brazil
| | - Gianna Minton
- Environment Society of Oman; P.O. Box 3955 PC 112 Ruwi Sultanate of Oman
| | - Peter Ersts
- Center for Biodiversity and Conservation; American Museum of Natural History; Central Park West at 79th Street New York NY 10024 USA
| | - Jaco Barendse
- Mammal Research Institute; University of Pretoria; c/o Iziko South African Museum, P.O. Box 61 Cape Town 8000 South Africa
| | - P. G. H. Kotze
- Department of Environmental Affairs; Branch Oceans and Coasts; Private Bag x2, Roggebaai 8012 Cape Town South Africa
| | - Yvette Razafindrakoto
- Wildlife Conservation Society-Madagascar Program; 2300 Southern Blvd. Bronx NY 10460-1099 USA
| | - Solange Ngouessono
- Agence Nationale des Parcs Nationaux; Batterie 4 BP 20379 Libreville Gabon
| | - Michael Meÿer
- Department of Environmental Affairs; Branch Oceans and Coasts; Private Bag x2, Roggebaai 8012 Cape Town South Africa
| | - Meredith Thornton
- Mammal Research Institute; University of Pretoria; c/o Iziko South African Museum, P.O. Box 61 Cape Town 8000 South Africa
| | - Howard C. Rosenbaum
- Wildlife Conservation Society; Ocean Giants Program; 2300 Southern Blvd. Bronx NY 10460-1099 USA
- Sackler Institute for Comparative Genomics; American Museum of Natural History; Central Park West at 79th Street New York NY 10024 USA
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Minton G, Zulkifli Poh AN, Peter C, Porter L, Kreb D. Indo-Pacific Humpback Dolphins in Borneo: A Review of Current Knowledge with Emphasis on Sarawak. Adv Mar Biol 2015; 73:141-156. [PMID: 26790891 DOI: 10.1016/bs.amb.2015.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Indo-Pacific humpback dolphins (Sousa chinensis) are documented from various locations along Borneo's coast, including three sites in Sarawak, Malaysia, three sites in Sabah, Malaysia, three locations in Kalimantan, Indonesia and the limited coastal waters of the Sultanate of Brunei. Observations in all these areas indicate a similar external morphology, which seems to fall somewhere between that documented for Chinese populations known as S. chinensis, and that of Sousa sahulensis in Australia and Papua New Guinea. Sightings occur in shallow nearshore waters, often near estuaries and river mouths, and associations with Irrawaddy dolphins (Orcaella brevirostris) are frequently documented. Population estimates exist for only two locations and sightings information throughout Borneo indicates that frequency of occurrence is rare and group size is usually small. Threats from fisheries by-catch and coastal development are present in many locations and there are concerns over the ability of these small and fragmented populations to survive. The conservation and taxonomic status of humpback dolphins in Borneo remain unclear, and there are intriguing questions as to where these populations fit in our evolving understanding of the taxonomy of the genus.
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Affiliation(s)
| | - Anna Norliza Zulkifli Poh
- Institute of Biodiversity and Environmental Conservation (IBEC), Universiti Malaysia Sarawak, Sarawak, Malaysia
| | - Cindy Peter
- Institute of Biodiversity and Environmental Conservation (IBEC), Universiti Malaysia Sarawak, Sarawak, Malaysia
| | - Lindsay Porter
- SMRU Asia Pacific, The University of St. Andrews, St. Andrews, Scotland, United Kingdom
| | - Danielle Kreb
- Yayasan Konservasi RASI, Rare Aquatic Species of Indonesia, Komplek Pandan Harum Indah, Samarinda, Kalimantan Timur, Indonesia
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Van Bressem MF, Minton G, Collins T, Willson A, Baldwin R, Van Waerebeek K. Tattoo-like skin disease in the endangered subpopulation of the Humpback Whale,Megaptera novaeangliae,in Oman (Cetacea: Balaenopteridae). Zoology in the Middle East 2014. [DOI: 10.1080/09397140.2014.994316] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Pomilla C, Amaral AR, Collins T, Minton G, Findlay K, Leslie MS, Ponnampalam L, Baldwin R, Rosenbaum H. The world's most isolated and distinct whale population? Humpback whales of the Arabian Sea. PLoS One 2014; 9:e114162. [PMID: 25470144 PMCID: PMC4254934 DOI: 10.1371/journal.pone.0114162] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 11/04/2014] [Indexed: 11/18/2022] Open
Abstract
A clear understanding of population structure is essential for assessing conservation status and implementing management strategies. A small, non-migratory population of humpback whales in the Arabian Sea is classified as "Endangered" on the IUCN Red List of Threatened Species, an assessment constrained by a lack of data, including limited understanding of its relationship to other populations. We analysed 11 microsatellite markers and mitochondrial DNA sequences extracted from 67 Arabian Sea humpback whale tissue samples and compared them to equivalent datasets from the Southern Hemisphere and North Pacific. Results show that the Arabian Sea population is highly distinct; estimates of gene flow and divergence times suggest a Southern Indian Ocean origin but indicate that it has been isolated for approximately 70,000 years, remarkable for a species that is typically highly migratory. Genetic diversity values are significantly lower than those obtained for Southern Hemisphere populations and signatures of ancient and recent genetic bottlenecks were identified. Our findings suggest this is the world's most isolated humpback whale population, which, when combined with low population abundance estimates and anthropogenic threats, raises concern for its survival. We recommend an amendment of the status of the population to "Critically Endangered" on the IUCN Red List.
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Affiliation(s)
- Cristina Pomilla
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
| | - Ana R. Amaral
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Centro de Biologia Ambiental, Faculdade de Ciências Universidade de Lisboa, Lisboa, Portugal
| | - Tim Collins
- Ocean Giants Program, Wildlife Conservation Society, Bronx, New York, United States of America
- Environment Society of Oman, Ruwi, Sultanate of Oman
| | - Gianna Minton
- Environment Society of Oman, Ruwi, Sultanate of Oman
- World Wide Fund for Nature, Gabon, Libreville, Gabon
| | - Ken Findlay
- Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
| | - Matthew S. Leslie
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Ocean Giants Program, Wildlife Conservation Society, Bronx, New York, United States of America
| | - Louisa Ponnampalam
- Environment Society of Oman, Ruwi, Sultanate of Oman
- Institute of Ocean and Earth Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Howard Rosenbaum
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, New York, United States of America
- Ocean Giants Program, Wildlife Conservation Society, Bronx, New York, United States of America
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Van Bressem MF, Minton G, Sutaria D, Kelkar N, Peter C, Zulkarnaen M, Mansur RM, Porter L, Vargas LH, Rajamani L. Cutaneous nodules in Irrawaddy dolphins: an emerging disease in vulnerable populations. Dis Aquat Organ 2014; 107:181-189. [PMID: 24429469 DOI: 10.3354/dao02689] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The presence of cutaneous nodules is reported in vulnerable populations of Irrawaddy dolphins Orcaella brevirostris from Malaysia (Kuching, Bintulu-Similajau, Kinabatangan-Segama and Penang Island), India (Chilika Lagoon) and Bangladesh (Sundarbans). Approximately 5700 images taken for photo-identification studies in 2004 to 2013 were examined for skin disorders. Nodules were detected in 6 populations. They appeared as circumscribed elevations of the skin and varied in size from 2 to >30 mm, were sparse or numerous and occurred on all visible body areas. In 8 photo-identified (PI) dolphins from India and Malaysia, the lesions remained stable (N = 2) or progressed (N = 6) over months but did not regress. The 2 most severely affected individuals were seen in Kuching and the Chilika Lagoon. Their fate is unknown. Cutaneous nodules were sampled in a female that died in a gillnet in Kuching in 2012. Histologically, the lesions consisted of thick collagen bundles covered by a moderately hyperplasic epithelium and were diagnosed as fibropapillomas. Whether the nodules observed in the other O. brevirostris were also fibropapillomas remains to be investigated. Disease prevalence ranged from 2.2% (N = 46; Bintulu-Similajau) to 13.9% (N = 72; Chilika) in 4 populations from Malaysia and India. It was not significantly different in 3 study areas in eastern Malaysia. In Chilika, prevalence was significantly higher (p = 0.00078) in 2009 to 2011 (13.9%) than in 2004 to 2006 (2.8%) in 72 PI dolphins. The emergence of a novel disease in vulnerable O. brevirostris populations is of concern.
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Kershaw F, Leslie MS, Collins T, Mansur RM, Smith BD, Minton G, Baldwin R, LeDuc RG, Anderson RC, Brownell RL, Rosenbaum HC. Population Differentiation of 2 Forms of Bryde’s Whales in the Indian and Pacific Oceans. J Hered 2013; 104:755-64. [DOI: 10.1093/jhered/est057] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Corkeron PJ, Minton G, Collins T, Findlay K, Willson A, Baldwin R. Spatial models of sparse data to inform cetacean conservation planning: an example from Oman. ENDANGER SPECIES RES 2011. [DOI: 10.3354/esr00367] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Mendez M, Subramaniam A, Collins T, Minton G, Baldwin R, Berggren P, Särnblad A, Amir OA, Peddemors VM, Karczmarski L, Guissamulo A, Rosenbaum HC. Molecular ecology meets remote sensing: environmental drivers to population structure of humpback dolphins in the Western Indian Ocean. Heredity (Edinb) 2011; 107:349-61. [PMID: 21427750 DOI: 10.1038/hdy.2011.21] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Genetic analyses of population structure can be placed in explicit environmental contexts if appropriate environmental data are available. Here, we use high-coverage and high-resolution oceanographic and genetic sequence data to assess population structure patterns and their potential environmental influences for humpback dolphins in the Western Indian Ocean. We analyzed mitochondrial DNA data from 94 dolphins from the coasts of South Africa, Mozambique, Tanzania and Oman, employing frequency-based and maximum-likelihood algorithms to assess population structure and migration patterns. The genetic data were combined with 13 years of remote sensing oceanographic data of variables known to influence cetacean dispersal and population structure. Our analyses show strong and highly significant genetic structure between all putative populations, except for those in South Africa and Mozambique. Interestingly, the oceanographic data display marked environmental heterogeneity between all sampling areas and a degree of overlap between South Africa and Mozambique. Our combined analyses therefore suggest the occurrence of genetically isolated populations of humpback dolphins in areas that are environmentally distinct. This study highlights the utility of molecular tools in combination with high-resolution and high-coverage environmental data to address questions not only pertaining to genetic population structure, but also to relevant ecological processes in marine species.
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Affiliation(s)
- M Mendez
- Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, USA.
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Rosenbaum HC, Pomilla C, Mendez M, Leslie MS, Best PB, Findlay KP, Minton G, Ersts PJ, Collins T, Engel MH, Bonatto SL, Kotze DPGH, Meÿer M, Barendse J, Thornton M, Razafindrakoto Y, Ngouessono S, Vely M, Kiszka J. Population structure of humpback whales from their breeding grounds in the South Atlantic and Indian Oceans. PLoS One 2009; 4:e7318. [PMID: 19812698 PMCID: PMC2754530 DOI: 10.1371/journal.pone.0007318] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Accepted: 08/06/2009] [Indexed: 11/18/2022] Open
Abstract
Although humpback whales are among the best-studied of the large whales, population boundaries in the Southern Hemisphere (SH) have remained largely untested. We assess population structure of SH humpback whales using 1,527 samples collected from whales at fourteen sampling sites within the Southwestern and Southeastern Atlantic, the Southwestern Indian Ocean, and Northern Indian Ocean (Breeding Stocks A, B, C and X, respectively). Evaluation of mtDNA population structure and migration rates was carried out under different statistical frameworks. Using all genetic evidence, the results suggest significant degrees of population structure between all ocean basins, with the Southwestern and Northern Indian Ocean most differentiated from each other. Effective migration rates were highest between the Southeastern Atlantic and the Southwestern Indian Ocean, followed by rates within the Southeastern Atlantic, and the lowest between the Southwestern and Northern Indian Ocean. At finer scales, very low gene flow was detected between the two neighbouring sub-regions in the Southeastern Atlantic, compared to high gene flow for whales within the Southwestern Indian Ocean. Our genetic results support the current management designations proposed by the International Whaling Commission of Breeding Stocks A, B, C, and X as four strongly structured populations. The population structure patterns found in this study are likely to have been influenced by a combination of long-term maternally directed fidelity of migratory destinations, along with other ecological and oceanographic features in the region.
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Affiliation(s)
- Howard C Rosenbaum
- Cetacean Conservation and Research Program, Global Conservation-Marine, Wildlife Conservation Society, Bronx, New York, United States of America.
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Minton G, Brill JW. Search for photoinduced absorption in charge-density-wave materials with non-half-filled bands. Phys Rev B Condens Matter 1992; 45:8256-8263. [PMID: 10000656 DOI: 10.1103/physrevb.45.8256] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Herr SL, Minton G, Brill JW. Bolometric measurement of the charge-density-wave gap in TaS3. Phys Rev B Condens Matter 1986; 33:8851-8854. [PMID: 9938307 DOI: 10.1103/physrevb.33.8851] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Brill JW, Roark W, Minton G. Effects of charge-density-wave depinning on the elastic properties of orthorhombic TaS3. Phys Rev B Condens Matter 1986; 33:6831-6840. [PMID: 9938008 DOI: 10.1103/physrevb.33.6831] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Abstract
Subcutaneous emphysema of the neck and pneumomediastinum following facial trauma in the absence of neck, chest, or abdominal injuries is a rare entity. A case report of bilateral cervical subcutaneous emphysema, pneumothorax, and pneumomediastinum secondary to mandibular fractures is presented. The anatomic mechanism of injury, diagnosis, and treatment modalities are discussed.
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