Hybridization in bottlenose dolphins—a case study of tursiops aduncus × t. Truncatus hybrids and successful backcross hybridization events

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dc.contributor.author Gridley, T.
dc.contributor.author Elwen, Simon Harvey
dc.contributor.author Harris, G.
dc.contributor.author Moore, D.M.
dc.contributor.author Hoelzel, A.R.
dc.contributor.author Lampen, F.
dc.date.accessioned 2018-12-07T06:30:32Z
dc.date.available 2018-12-07T06:30:32Z
dc.date.issued 2018-09-12
dc.description.abstract The bottlenose dolphin, genus Tursiops is one of the best studied of all the Cetacea with a minimum of two species widely recognised. Common bottlenose dolphins (T. truncatus), are the cetacean species most frequently held in captivity and are known to hybridize with species from at least 6 different genera. In this study, we document several intra-generic hybridization events between T. truncatus and T. aduncus held in captivity. We demonstrate that the F1 hybrids are fertile and can backcross producing apparently healthy offspring, thereby showing introgressive inter-specific hybridization within the genus. We document that female F1 hybrids can reach sexual maturity at 4 yr and 3 mo of age, and can become pregnant and give birth before being fully weaned. The information presented has implications for understanding hybrid reticulation among cetacean species and practical implications for captive facilities housing either Tursiops species or hybrids thereof. en_ZA
dc.description.department Mammal Research Institute en_ZA
dc.description.department Zoology and Entomology en_ZA
dc.description.librarian am2018 en_ZA
dc.description.sponsorship This research was supported in part by a Claude Leon Post Doctoral Fellowship to TG (www. leonfoundation.co.za) and National ResearchFoundation Fellowship to SE (www.nrf.ac. za/). Sea Search Africa Pty provided travel funding to TG (www.seasearch.co.za). en_ZA
dc.description.uri http://www.plosone.org en_ZA
dc.identifier.citation Gridley T, Elwen SH, Harris G, Moore DM, Hoelzel AR, Lampen F (2018) Hybridization in bottlenose dolphinsÐA case study of Tursiops aduncus × T. truncatus hybrids and successful backcross hybridization events. PLoS ONE 13(9): e0201722. https://DOI.org/10.1371/journal.pone.0201722. en_ZA
dc.identifier.issn 1932-6203 (online)
dc.identifier.other 10.1371/journal.pone.0201722
dc.identifier.uri http://hdl.handle.net/2263/68055
dc.language.iso en en_ZA
dc.publisher Public Library of Science en_ZA
dc.rights © 2018 Gridley et al. This is an open access article distributed under the terms of the Creative Commons Attribution License. en_ZA
dc.subject Hybridization en_ZA
dc.subject Genus en_ZA
dc.subject Sexual maturity en_ZA
dc.subject Progeny en_ZA
dc.subject Pregnancy en_ZA
dc.subject Interspecific hybridization en_ZA
dc.subject Bottlenose dolphin (Tursiops truncatus) en_ZA
dc.title Hybridization in bottlenose dolphins—a case study of tursiops aduncus × t. Truncatus hybrids and successful backcross hybridization events en_ZA
dc.type Article en_ZA


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