Fission-fusion dynamics of a pelagic delphinid in the arctic:the white-beaked dolphin(Lagenorhynchus albirostris)

作     者：Chiara G.BERTULLI Marianne H.RASMUSSEN Massimiliano ROSSO 

作者机构：Department of Life and Environmental SciencesUniversity of IcelandReykjavikIceland Sea Watch FoundationNew QuayUK Húsavík Research CentreUniversity of IcelandHúsavíkIceland CIMA Research FoundationSavonaItaly 

出 版 物：《Integrative Zoology》 (整合动物学（英文版）)

年 卷 期：2021年第16卷第4期

页      面：512-526页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

主　　题：association patterns Iceland Lagenorhynchus albirostris social structure white-beaked dolphin 

摘      要：Delphinids exhibit great variability in their social *** is therefore important to document lesser known species,in extreme changing habitats,to compare and contrast mechanisms driving ***,we describe the first long-term assessment of social structure of white-beaked dolphins(Lagenorhynchus albirostris)using a compiled version of SOCPROG 2.8 and an 11-year photo-identification dataset(2002–2013)collected from whalewatching vessels at 2 sites(Faxaflói and Skjálfandi bays)off *** identified a total of 487 dolphins which are suggested to be part of an open population as shown by the discovery curve obtained analyzing photo-id *** social analyses were restricted to 35 adults which were sighted on≥5 different *** mean residency time of white-beaked dolphins in our 2 study areas was of 95 days(SE=35.63;95%CI:23-171),with the“migration-full interchangemodel best describing movements of dolphins in and out of our 2 study *** differentiation in this population was high(Likelihood:S=0.87,SE=0.04;r=0.31,SE=0.03)indicating diverse,non-random social *** associations best fit the model of“casual acquaintancesagainst the standardized lagged association rates with the majority of white-beaked dolphin associations being short-term,but with a few long-term across *** for preferred companionship,long-term associations are favored over *** this study,associations among white-beaked dolphins are short-term but with desirably long-term associations fitting into a society with fission-fusion *** information expands the latitudinal range for which social structure has been described for oceanic dolphin species.