Social decision making is influenced by size of shoal but not boldness, sociability or familiarity in Deccan mahseer (Tor khudree)

IF 0.9 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY Marine and Freshwater Behaviour and Physiology Pub Date : 2020-11-01 DOI:10.1080/10236244.2020.1838244

V. Varma, Ashutosh Kumar Singh, Jintu Vijayan, V. Binoy

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引用次数: 1

Abstract

ABSTRACT Many piscine species form fission-fusion societies where decisions to leave or join a shoal are influenced by factors such as shoal size, familiarity and species. Individuals exhibit distinct shoaling preferences based on behavioural traits such as boldness and sociability. In this study, we examined the link between shoaling decisions and behavioural traits in a hatchery reared population of an endangered megafish, the Deccan mahseer (Tor khudree). We found that this fish exhibits preference for larger shoals when presented with choices of 2 vs 4 and 2 vs 8 shoal sizes. However, no preference for isolated familiar or unfamiliar conspecifics over invasive heterospecifics was observed. Moreover, individual shoaling preferences did not correlate with their boldness or sociability. These results suggest that juvenile hatchery reared mahseers reintroduced into natural habitats may shoal with invasive species and modifying their social behaviour by amending rearing practices could improve outcomes of restocking interventions.

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在德干mahseer中，社会决策受鱼群大小的影响，但不受胆量、社交能力或熟悉程度的影响(托尔·库德里)

许多鱼类形成了裂变融合社会，在这种社会中，离开或加入鱼群的决定受到鱼群大小、熟悉度和种类等因素的影响。个体根据大胆和社交等行为特征表现出不同的浅滩偏好。在这项研究中，我们研究了在孵化场饲养的一种濒临灭绝的巨型鱼——德干mahseer (Tor khudree)——的鱼群决策和行为特征之间的联系。我们发现这种鱼在面对2 vs 4和2 vs 8鱼群大小的选择时，表现出对较大鱼群的偏好。然而，没有观察到孤立的熟悉或不熟悉的同种物种比侵入性异种物种更有偏好。此外，个体的浅滩偏好与他们的胆量或社交能力无关。这些结果表明，放归自然栖息地的马尾鱼可能会与入侵物种发生冲突，通过改变饲养方式来改变马尾鱼的社会行为可以改善放归干预的结果。

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来源期刊

Marine and Freshwater Behaviour and Physiology 生物-海洋与淡水生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Marine and Freshwater Behaviour and Physiology is devoted to the publication of papers covering field and laboratory research into all aspects of the behaviour and physiology of all marine and freshwater animals within the contexts of ecology, evolution and conservation. As the living resources of the world’s oceans, rivers and lakes are attracting increasing attention as food sources for humans and for their role in global ecology, the journal will also publish the results of research in the areas of fisheries biology and technology where the behaviour and physiology described have clear links to the contexts mentioned above. The journal will accept for publication Research Articles, Reviews, Rapid Communications and Technical Notes (see Instructions for authors for details). In addition, Editorials, Opinions and Book Reviews (invited and suggested) will also occasionally be published. Suggestions to the Editor-In-Chief for Special Issues are encouraged and will be considered on an ad hoc basis. With the goal of supporting early career researchers, the journal particularly invites submissions from graduate students and post-doctoral researchers. In addition to recognising the time constraints and logistical limitations their research often faces, and their particular need for a prompt review process, accepted articles by such researchers will be given prominence within the journal (see Instructions for authors for details).