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Associates from infancy influence postweaning juvenile associations for common bottlenose dolphins (Tursiops truncatus) in Florida
Journal of Mammalogy ( IF 1.7 ) Pub Date : 2022-07-18 , DOI: 10.1093/jmammal/gyac063
Michelle R Greenfield, Wendy N Durden, Teresa A Jablonski, Lydia D Moreland, Agatha C Fabry, Lisa Y Gemma, Heidy H Clifford

In many long-lived mammalian species, association patterns between individuals have been found to influence sociality, behavioral traits, survival, and longevity. In common bottlenose dolphins (Tursiops truncatus), the early stages of development are of particular importance as associations experienced as dependent calves may influence future association patterns. While behavioral characteristics associated with the transition from a dependent calf state to an independent juvenile state have been documented, there are limited studies that examine associations between these time periods. This study aims to document association longevity for bottlenose dolphins as they transition from calves to juveniles and determine the extent to which kinship plays a role in the development of these associations. Using social network analysis, a generalized linear mixed model (GLMM), and a tiered association scale, we found 53.7% of associations were retained from the calf to the juvenile phase. GLMM results indicated that preferred associates (half-weight index [HWI] > 0.178) from the calf state were 3.6 times more likely to associate in the juvenile state (0.178 > HWI > 0) and 5.67 times more likely to be preferred associates in the juvenile state compared to nonpreferred calf associates. The majority of juveniles, 76.92%, maintained a low–moderate to moderate level association (0.089–0.54) with their mother, and a few retained their mother as their top associate. Kin were preferred associates in 46.15% of cases and found to be the top juvenile associate in 26.92% of cases. Identifying continuity in associations, particularly from the calving state to the juvenile state, is imperative as mammalian association patterns may influence community structure, disease transmission, reproductive success, and predict survival.

中文翻译:

婴儿期的同事影响佛罗里达州普通宽吻海豚 (Tursiops truncatus) 断奶后的青少年协会

在许多长寿的哺乳动物物种中,已发现个体之间的关联模式会影响社会性、行为特征、生存和寿命。在普通宽吻海豚 (Tursiops truncatus) 中,发育的早期阶段特别重要,因为依赖小牛所经历的关联可能会影响未来的关联模式。虽然已经记录了与从依赖小牛状态过渡到独立幼年状态相关的行为特征,但研究这些时间段之间的关联的研究有限。本研究旨在记录宽吻海豚从小牛过渡到幼鱼时的关联寿命,并确定亲属关系在这些关联发展中的作用程度。使用社交网络分析,广义线性混合模型 (GLMM) 和分层关联量表,我们发现 53.7% 的关联从小牛到幼年期保留。GLMM 结果表明,来自小牛状态的首选员工(半权重指数 [HWI] > 0.178)在幼年状态下(0.178 > HWI > 0)的联想可能性是其 3.6 倍,被首选的可能性是 5.67 倍与非首选小牛同事相比,处于少年状态的同事。大多数青少年(76.92%)与他们的母亲保持着中低水平的关联(0.089-0.54),少数人将他们的母亲作为他们的主要伙伴。Kin 在 46.15% 的案件中是首选合伙人,在 26.92% 的案件中被认为是最佳的青少年合伙人。识别关联的连续性,
更新日期:2022-07-18
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