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Mother knows best: occurrence and associations of resighted humpback whales suggest maternally derived fidelity to a southern hemisphere coastal feeding ground

2013-12Journal article Open access
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dc.contributor.authorBarendse, Jaco
dc.contributor.authorBest, Peter B.
dc.contributor.authorCarvalho, Inês
dc.contributor.authorPomilla, Cristina
dc.date.accessioned2018-12-07T14:52:55Z
dc.date.available2018-12-07T14:52:55Z
dc.date.issued2013-12
dc.description.abstractSite fidelity is common among migratory cetaceans, including humpback whales (Megaptera novaeangliae). In the Northern Hemisphere it has been found that fidelity to humpback whale feeding grounds is transferred maternally but this has never been shown for the species in the Southern Hemisphere. We examined this in a unique feeding area off west South Africa using resighting data of 68 individually identified humpback whales by means of photographic (tail flukes and dorsal fins) and/or molecular methods (microsatellite genotyping) over an 18 year span. We found short-term association patterns and recurrent visits typical of other feeding grounds. Males and females had different seasonality of attendance. Significant female-dominated presence corresponded to timing of an expected influx of females on their southward migration from the breeding ground: firstly non-nursing (possibly pregnant) females in mid-spring, and mothers and calves in mid-to late summer. The potential benefit of this mid-latitude feeding area for females is illustrated by a record of a cow with known age of at least 23 years that produced calves in three consecutive years, each of which survived to at least six months of age: the first record of successful post-partum ovulation for this species in the Southern Hemisphere. We recorded association of a weaned calf with its mother, and a recurring association between a non-lactating female and male over more than two years. Moreover, three animals first identified as calves returned to the same area in subsequent years, sometimes on the same day as their mothers. This, together with numerous Parent-Offspring relations detected genetically among and between resighted and non-resighted whales is strongly suggestive of maternally derived site fidelity at a small spatial scale by a small sub-population of humpback whales.
dc.description.sponsorshipNational Research Foundation (NRF), South Africa [2047517]; PADI Project AWARE (UK) [095]; Earthwatch Institute (project title "Whales of South Africa")
dc.identifier.doi10.1371/journal.pone.0081238
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.1/11264
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPublic Library of Science
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMegaptera novaeangliae calves
dc.subjectMaximum likelihood estimation
dc.subjectNorth Atlantic Ocean
dc.subjectGulf of Maine
dc.subjectWest Coast
dc.subjectPopulation structure
dc.subjectReproductive success
dc.subjectHistorical records
dc.subjectBreeding areas
dc.subjectMigration
dc.titleMother knows best: occurrence and associations of resighted humpback whales suggest maternally derived fidelity to a southern hemisphere coastal feeding ground
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue12
oaire.citation.startPagee81238
oaire.citation.titlePlos One
oaire.citation.volume8
person.familyNameBarendse
person.familyNameCarvalho
person.familyNamePomilla
person.givenNameJaco
person.givenNameInês
person.givenNameCristina
person.identifier.ciencia-idCE1C-3353-6585
person.identifier.orcid0000-0003-2859-4501
person.identifier.orcid0000-0002-4641-8037
person.identifier.orcid0000-0002-2581-8365
person.identifier.ridF-7064-2012
person.identifier.ridE-9270-2012
person.identifier.scopus-author-id6507554466
person.identifier.scopus-author-id36117492800
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublicationdf162e8d-e6c2-4f22-a6eb-b484ceb69033
relation.isAuthorOfPublication009e28dd-f076-49e9-910f-61e67fbfecf5
relation.isAuthorOfPublicationfe53fb1c-afac-4089-9db4-11b5440e4f33
relation.isAuthorOfPublication.latestForDiscoverydf162e8d-e6c2-4f22-a6eb-b484ceb69033

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