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Devloo‐Delva F, Burridge CP, Kyne PM, Brunnschweiler JM, Chapman DD, Charvet P, Chen X, Cliff G, Daly R, Drymon JM, Espinoza M, Fernando D, Barcia LG, Glaus K, González‐Garza BI, Grant MI, Gunasekera RM, Hernandez S, Hyodo S, Jabado RW, Jaquemet S, Johnson G, Ketchum JT, Magalon H, Marthick JR, Mollen FH, Mona S, Naylor GJP, Nevill JEG, Phillips NM, Pillans RD, Postaire BD, Smoothey AF, Tachihara K, Tillet BJ, Valerio‐Vargas JA, Feutry P. From rivers to ocean basins: The role of ocean barriers and philopatry in the genetic structuring of a cosmopolitan coastal predator. Ecol Evol 2023; 13:e9837. [PMID: 36844667 PMCID: PMC9944188 DOI: 10.1002/ece3.9837] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/24/2023] Open
Abstract
The Bull Shark (Carcharhinus leucas) faces varying levels of exploitation around the world due to its coastal distribution. Information regarding population connectivity is crucial to evaluate its conservation status and local fishing impacts. In this study, we sampled 922 putative Bull Sharks from 19 locations in the first global assessment of population structure of this cosmopolitan species. Using a recently developed DNA-capture approach (DArTcap), samples were genotyped for 3400 nuclear markers. Additionally, full mitochondrial genomes of 384 Indo-Pacific samples were sequenced. Reproductive isolation was found between and across ocean basins (eastern Pacific, western Atlantic, eastern Atlantic, Indo-West Pacific) with distinct island populations in Japan and Fiji. Bull Sharks appear to maintain gene flow using shallow coastal waters as dispersal corridors, whereas large oceanic distances and historical land-bridges act as barriers. Females tend to return to the same area for reproduction, making them more susceptible to local threats and an important focus for management actions. Given these behaviors, the exploitation of Bull Sharks from insular populations, such as Japan and Fiji, may instigate local decline that cannot readily be replenished by immigration, which can in turn affect ecosystem dynamics and functions. These data also supported the development of a genetic panel to ascertain the population of origin, which will be useful in monitoring the trade of fisheries products and assessing population-level impacts of this harvest.
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Affiliation(s)
- Floriaan Devloo‐Delva
- Oceans and Atmosphere, CSIROHobartTasmaniaAustralia
- Quantitative Marine Science, Institute for Marine and Antarctic Studies, University of TasmaniaHobartTasmaniaAustralia
- Discipline of Biological Sciences, School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Christopher P. Burridge
- Discipline of Biological Sciences, School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Peter M. Kyne
- Research Institute for the Environment and LivelihoodsCharles Darwin UniversityDarwinNorthern TerritoryAustralia
| | | | - Demian D. Chapman
- Department of Biological SciencesFlorida International UniversityNorth MiamiFloridaUSA
| | - Patricia Charvet
- Programa de Pós‐graduação em Sistemática, Uso e Conservação da BiodiversidadeUniversidade Federal do Ceará (PPGSis ‐ UFC)FortalezaBrazil
| | - Xiao Chen
- College of Veterinary MedicineSouth China Agricultural UniversityGuangzhouChina
| | - Geremy Cliff
- KwaZulu‐Natal Sharks Board, Umhlanga 4320, South Africa and School of Life SciencesUniversity of KwaZulu‐NatalDurbanSouth Africa
| | - Ryan Daly
- Oceanographic Research Institute, South African Association for Marine Biological Research, PointDurbanSouth Africa
- South African Institute for Aquatic BiodiversityMkhandaSouth Africa
| | - J. Marcus Drymon
- Coastal Research and Extension CenterMississippi State UniversityBiloxiMississippiUSA
- Mississippi‐Alabama Sea Grant ConsortiumOcean SpringsMississippiUSA
| | - Mario Espinoza
- Centro de Investigación en Ciencias del Mar y Limnología & Escuela de BiologíaUniversidad de Costa Rica, San Pedro de Montes de OcaSan JoséCosta Rica
| | | | - Laura Garcia Barcia
- Department of Biological SciencesFlorida International UniversityNorth MiamiFloridaUSA
| | - Kerstin Glaus
- Faculty of Science, Technology and Environment, School of Marine StudiesThe University of the South PacificSuvaFiji
| | | | - Michael I. Grant
- College of Science and Engineering, Centre for Sustainable Tropical Fisheries and AquacultureJames Cook UniversityTownsvilleQueenslandAustralia
| | | | - Sebastian Hernandez
- Biomolecular Laboratory, Center for International ProgramsUniversidad VERITASSan JoséCosta Rica
- Sala de Colecciones, Facultad de Ciencias del MarUniversidad Católica del NorteCoquimboChile
| | - Susumu Hyodo
- Laboratory of Physiology, Atmosphere and Ocean Research InstituteUniversity of TokyoKashiwa, ChibaJapan
| | - Rima W. Jabado
- College of Science and Engineering, Centre for Sustainable Tropical Fisheries and AquacultureJames Cook UniversityTownsvilleQueenslandAustralia
- Elasmo ProjectDubaiUnited Arab Emirates
| | - Sébastien Jaquemet
- UMR ENTROPIE (Université de La Réunion, Université de Nouvelle‐Calédonie, IRD, CNRS, IFREMER), Faculté des Sciences et TechnologiesUniversité de La RéunionCedex 09, La RéunionFrance
| | - Grant Johnson
- Department of Industry, Tourism and Trade, Aquatic Resource Research UnitDarwinNorthern TerritoryAustralia
| | | | - Hélène Magalon
- UMR ENTROPIE (Université de La Réunion, Université de Nouvelle‐Calédonie, IRD, CNRS, IFREMER), Faculté des Sciences et TechnologiesUniversité de La RéunionCedex 09, La RéunionFrance
| | - James R. Marthick
- Menzies Institute for Medical ResearchUniversity of TasmaniaHobartTasmaniaAustralia
| | | | - Stefano Mona
- Institut de Systématique, Evolution, Biodiversité, ISYEB (UMR 7205), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHEUniversité des AntillesParisFrance
- EPHEPSL Research UniversityParisFrance
| | - Gavin J. P. Naylor
- Florida Museum of Natural HistoryUniversity of FloridaGainesvilleFloridaUSA
| | | | - Nicole M. Phillips
- School of Biological, Environmental and Earth SciencesThe University of Southern MississippiHattiesburgMississippiUSA
| | | | - Bautisse D. Postaire
- UMR ENTROPIE (Université de La Réunion, Université de Nouvelle‐Calédonie, IRD, CNRS, IFREMER), Faculté des Sciences et TechnologiesUniversité de La RéunionCedex 09, La RéunionFrance
| | - Amy F. Smoothey
- NSW Department of Primary Industries, Fisheries ResearchSydney Institute of Marine ScienceMosmanNew South WalesAustralia
| | - Katsunori Tachihara
- Laboratory of Fisheries Biology and Coral Reef Studies, Faculty of ScienceUniversity of Ryukyus, NishiharaOkinawaJapan
| | - Bree J. Tillet
- Translational Research Institute, University of Queensland Diamantina InstituteBrisbaneQueenslandAustralia
| | - Jorge A. Valerio‐Vargas
- Centro de Investigación en Ciencias del Mar y Limnología & Escuela de BiologíaUniversidad de Costa Rica, San Pedro de Montes de OcaSan JoséCosta Rica
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