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From rivers to ocean basins: the role of ocean barriers and philopatry in the genetic structuring of a cosmopolitan coastal predator Devloo-Delva, F.; Burridge, C.P.; Kyne, P.M.; Brunnschweiler, J.M.; Chapman, D.D.; Charvet, P.; Chen, X.; Cliff, G.; Daly, R.; Drymon, J.M.; Espinoza, M.; Fernando, D.; Garcia Barcia, L.; Glaus, K.; González‐Garza, B.I.; Grant, M.I.; Gunasekera, R.M.; Hernández, S.I.; Hyodo, S.; Jabado, R.W.; Jaquemet, S.; Johnson, G.; Ketchum, J.T.; Magalon, H.; Marthick, J.R.; Mollen, F.H.; Mona, S.; Naylor, G.J.P.; Nevill, J.E.G.; Phillips, N.M.; Pillans, R.D.; Postaire, B.D.; Smoothey, A.F.; Tachihara, K.; Tillet, B.J.; Valerio‐Vargas, J.A.; Feutry, P. (2023). From rivers to ocean basins: the role of ocean barriers and philopatry in the genetic structuring of a cosmopolitan coastal predator. Ecol. Evol. 13(2): e9837. https://dx.doi.org/10.1002/ece3.9837 In: Ecology and Evolution. John Wiley & Sons: Chichester. ISSN 2045-7758; e-ISSN 2045-7758 Is gerelateerd aan: Devloo-Delva, F.; Burridge, C.P.; Kyne, P.M.; Brunnschweiler, J.M.; Chapman, D.D.; Charvet, P.; Chen, X.; Cliff, G.; Daly, R.; Drymon, J.M.; Espinoza, M.; Fernando, D.; Garcia Barcia, L.; Glaus, K.; Grant, M.I.; Gunasekera, R.M.; Hernández, S.I.; Hyodo, S.; Jabado, R.W.; Jaquemet, S.; Johnson, G.; Magalon, H.; Marthick, J.R.; Mollen, F.H.; Mona, S.; Naylor, G.J.P.; Nevill, J.E.G.; Phillips, N.M.; Pillans, R.D.; Postaire, B.D.; Smoothey, A.F.; Tachihara, K.; Tillet, B.J.; Valerio, J.; Feutry, P. (2020). From rivers to ocean basins – Global genetic population structure of the bull shark, in: OCS Virtual Conference, November 3 & 4, 2020: Program and abstracts. pp. 8, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 392404 [ download pdf ]

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Trefwoord

Carcharhinus leucas (Valenciennes, 1839) [WoRMS]

Author keywords

close-kin;DArTseq;DNA forensics;genetic connectivity;mitogenome;provenance;SHARKS CARCHARHINUS-LEUCAS;MITOCHONDRIAL-DNA EVOLUTION;R PACKAGE;POPULATION-STRUCTURE;FISHERIES MANAGEMENT;LIFE-HISTORY;BULL;PHYLOGEOGRAPHY;IDENTIFICATION;PATTERNS

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Auteurs		Top
Devloo-Delva, F. Burridge, C.P. Kyne, P.M. Brunnschweiler, J.M. Chapman, D.D. Charvet, P. Chen, X. Cliff, G. Daly, R. Drymon, J.M. Espinoza, M. Fernando, D. Garcia Barcia, L.	Glaus, K. González-Garza, B.I. Grant, M.I. Gunasekera, R.M. Hernández, S.I. Hyodo, S. Jabado, R.W. Jaquemet, S. Johnson, G. Ketchum, J.T. Magalon, H. Marthick, J.R.	Mollen, F.H. Mona, S. Naylor, G.J.P. Nevill, J.E.G. Phillips, N.M. Pillans, R.D. Postaire, B.D. Smoothey, A.F. Tachihara, K. Tillet, B.J. Valerio-Vargas, J.A. Feutry, P.

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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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