Animal Behaviour最新文献_第4页

When sibling tolerance meets cannibalism of the dead in spiderlings

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123129

Antoine Lempereur, Raphaël Jeanson

{"title":"When sibling tolerance meets cannibalism of the dead in spiderlings","authors":"Antoine Lempereur, Raphaël Jeanson","doi":"10.1016/j.anbehav.2025.123129","DOIUrl":"10.1016/j.anbehav.2025.123129","url":null,"abstract":"<div><div>Social life requires group members to tolerate each other, which implies the presence of effective mechanisms to prevent aggression. The existence of a transient social life brings an additional dimension, as the response to social signals provided by conspecifics varies during ontogenesis. This raises questions about the mechanism driving the switch in the processing of social cues. Spiders are a relevant model for answering these questions, as juveniles are gregarious and tolerant at the start of their development and then behave aggressively towards their conspecifics at more advanced stages. Previous research has shown that spiderlings reared in groups are tolerant of their siblings, but that those maintained alone are cannibalistic. In many taxa, the nutritional status of individuals plays an important role in the expression of intraspecific aggression. We found that in juveniles of the solitary spider <em>Agelena labyrinthica</em>, lipid stores decreased over time when starved, but social context did not have any effect. This suggests that differences in energy stores do not cause differences in how individuals interact with each other. We then examined whether spiderlings that tolerated living siblings cannibalized corpses immediately after death or after a 24 h delay. We found that spiders engage in necrophagy at a similar rate, regardless of the age of the corpse. These results suggest that living spiders produce an as-yet-undetermined signal that protects them from cannibalism but disappears immediately after their death, exposing them to predation by siblings.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123129"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Offspring number and composition influence parental care strategy and offspring survival in the azure-winged magpie

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123100

Bi-Yun Jia, Zhen-Qin Zhu, Wen-Jing Zhu, Yu-Jie Wang, Ning-Ning Sun, Bo Du

{"title":"Offspring number and composition influence parental care strategy and offspring survival in the azure-winged magpie","authors":"Bi-Yun Jia, Zhen-Qin Zhu, Wen-Jing Zhu, Yu-Jie Wang, Ning-Ning Sun, Bo Du","doi":"10.1016/j.anbehav.2025.123100","DOIUrl":"10.1016/j.anbehav.2025.123100","url":null,"abstract":"<div><div>Examining parental optimization of their caregiving strategies is crucial for understanding the evolution of parental care because it benefits offspring while incurring costs to parents. This study hypothesized that besides offspring number, the composition of offspring in a nest, including the numbers of core (first-day hatching) and marginal offspring (subsequent-day hatching), can affect parental care. We tested this hypothesis using the azure-winged magpie, <em>Cyanopica cyanus</em>, breeding on the Tibetan Plateau. Initially, we categorized azure-winged magpie nests into different structures based on their offspring composition. Subsequently, we compared the fledging rates of core or marginal offspring among different-structured nests. Our findings showed that the fledging rate of core offspring was strongly affected by offspring numbers rather than their composition; it increased with an increase in marginal offspring numbers. Marginal offspring showed lower fledging rates than their core brood-mates and hatching sequences determined survival rates. Younger marginal offspring had consistently lower brood fledging rates. Our investigation of parental provisioning behaviours found that nest visitors provided more food to broods with more marginal offspring but allocated more food to core offspring, depriving marginal offspring of their fair share. Overall, our findings suggest that azure-winged magpies can optimize their caregiving strategy based on both the number and composition of offspring. This ultimately ensures greater survival for core offspring at a cost primarily borne by younger marginal offspring.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123100"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

No evidence of kin preferences in a feral horse multilevel society

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123120

Tamao Maeda , Renata Mendonça , Pandora Pinto , Monamie Ringhofer , Raquel Godinho , Satoshi Hirata , Shinya Yamamoto

{"title":"No evidence of kin preferences in a feral horse multilevel society","authors":"Tamao Maeda , Renata Mendonça , Pandora Pinto , Monamie Ringhofer , Raquel Godinho , Satoshi Hirata , Shinya Yamamoto","doi":"10.1016/j.anbehav.2025.123120","DOIUrl":"10.1016/j.anbehav.2025.123120","url":null,"abstract":"<div><div>A multilevel society represents a complex social structure characterized by nested levels of social organization, where small core units aggregate to form higher-level social organizations. In such a society, kinship often plays an important role in shaping social relationships; however, the degree of kin preference differs among species. This study aimed to identify whether free-ranging horses, <em>Equus ferus caballus</em>, in Serra D'Arga, Portugal, which form a two-tiered society, show preferences for related individuals. We examined the genetic relatedness of 167 genotyped individuals, which were in reproductive age, over a 7-year period and compared it with the unit composition and interunit proximity/association data obtained from drone observations. Neither relatedness nor the direct evaluation of first-degree relatives showed any clear correlation with either intra- or interunit relationships. This finding represents the first documented case of absence of kin preference in a multilevel society. It suggests that a multilevel society could be established without bonds among relatives and emphasizes the need to investigate nonkin relationship formation. This observed tendency differs from that of a related species, the plains zebra, <em>Equus quagga</em>, which has been reported to exhibit a female–female kin preference. Further comparisons with other equine species or different taxonomic groups are necessary to reveal the factors that influence genetic-related structures in a multilevel society.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123120"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mate choice copying behaviour in the livebearing fish Brachyrhaphis rhabdophora

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123148

Alexandra G. Duffy , Megan Gunn Pew , Jerald B. Johnson

{"title":"Mate choice copying behaviour in the livebearing fish Brachyrhaphis rhabdophora","authors":"Alexandra G. Duffy , Megan Gunn Pew , Jerald B. Johnson","doi":"10.1016/j.anbehav.2025.123148","DOIUrl":"10.1016/j.anbehav.2025.123148","url":null,"abstract":"<div><div>Reliance on social learning for mating decisions (i.e. ‘mate choice copying’) is taxonomically widespread and can influence the strength of sexual selection in a population. Theory suggests that a balance of social and individual learning, as well as stable individual behaviour in the propensity to copy mate choices, may help maintain variation in mating preferences within a population. Here, we focused on the livebearing fish species <em>Brachyrhaphis rhabdophora</em> to test the role of social information on mate preference behaviour in this species and the stability of copying behaviour within an individual. Female observers underwent a dichotomous choice test between two female demonstrators prior to observing and choosing between two potential mates with or without social information from female demonstrators. We found that <em>B. rhabdophora</em> females displayed strong preferences between males regardless of access to social information. We then retested individuals approximately 1 month later and found that individuals used social information in a consistent manner between trials. Taken together, our data suggest that <em>B. rhabdophora</em> females consider both personal and social information when making mating decisions and that heterogeneity in copying strategies exists among individuals within a population. These findings contribute to our growing understanding of the factors that shape the evolution of socially learned mating preferences.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123148"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing animal behaviour research using drone technology

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123147

Lucia Pedrazzi , Hemal Naik , Chris Sandbrook , Miguel Lurgi , Ines Fürtbauer , Andrew J. King

{"title":"Advancing animal behaviour research using drone technology","authors":"Lucia Pedrazzi , Hemal Naik , Chris Sandbrook , Miguel Lurgi , Ines Fürtbauer , Andrew J. King","doi":"10.1016/j.anbehav.2025.123147","DOIUrl":"10.1016/j.anbehav.2025.123147","url":null,"abstract":"<div><div>Unmanned aerial vehicles or drones have revolutionized wildlife monitoring, and they are increasingly being used to study animal behaviour. In this review, examples of how data captured by drones (primarily images and video) enable the study of animal behaviour in less accessible environments, as well as rare or elusive behaviours, are provided. We believe that the potential application of drone imagery to advance wildlife monitoring creates unique opportunities for animal behaviour research and conservation. Rapid advances in image-tracking technologies and the use of artificial intelligence to identify the position, behaviour and local environment of many individuals simultaneously allow for the automated collection and processing of large data sets. Moreover, drones allow researchers not only to observe but also to manipulate and alter animal behaviour, creating a biohybrid system (i.e. a system involving an interaction between biological and engineered components, as discussed in this special issue), enabling the systematic study of specific behaviours, such as responses to simulated predation risk, or managing animal groups in agricultural settings and human–wildlife conflict scenarios. However, effective drone usage is a difficult task, requiring consideration of many aspects. We highlight the importance of user proficiency in drone piloting and the challenges of processing and analysing the vast amount of data they create. In addition, we provide some insights into the importance of carefully considering the study species and context for animal behaviour research. Various methods of dealing with landscape and interindividual heterogeneity in studies across different species are also suggested. Finally, some ethical considerations and potential unintended consequences of drone usage are discussed.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123147"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visual learning, route formation and the choreography of looking back in desert ants, Melophorus bagoti

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123125

Cody A. Freas, Ken Cheng

{"title":"Visual learning, route formation and the choreography of looking back in desert ants, Melophorus bagoti","authors":"Cody A. Freas, Ken Cheng","doi":"10.1016/j.anbehav.2025.123125","DOIUrl":"10.1016/j.anbehav.2025.123125","url":null,"abstract":"<div><div>How ants, wasps and bees rapidly form visual routes represents an enduring mystery as well as a powerful example of the abilities of small brains. Here, we detailed a previously uncharacterized behaviour, ‘lookbacks’, which is theorized to underly rapid bidirectional route learning in desert ants. During these lookbacks, foragers stop forward movement to their goal location, turn and fixate their gaze on their origin, often for only 150–200 ms. This turn appears to be a period for learning the inbound route. Route formation relies on acquiring visual cues and comparing panoramic view memories with the current view. Although the nest panorama is learned during preforaging learning walks, during which naïve ants often fixate their gaze towards the nest, route following requires separate behaviours to learn route-based views. We untangle how route formation occurs in naïve desert ant, <em>Melophorus bagoti,</em> foragers during the first foraging trips by focusing on these lookback behaviours and their potential function in facilitating visual learning. Lookbacks were highly associated with the first few foraging trips and were concentrated in areas where the visual scene changed rapidly, resulting in increased unfamiliarity among naïve foragers. Analysis of gaze directions during lookbacks shows foragers pause intermittently, fixating their gaze in multiple directions during the turn with the longest of these being back at their origin, likely learning these views during their first foraging trips. We discussed the structure of lookbacks and how they may prime visual learning in ants and other insects.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123125"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dominance relations of Norway rats in groups versus pairs

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123132

Miguel A. Puentes-Escamilla , Manon K. Schweinfurth , Charlotte K. Hemelrijk

引用次数: 0

The Herculean task of sedentary predators in disturbed habitats: the response of antlion larvae

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123123

Vesna Klokočovnik , Janja Borštnar Lampreht , Inon Scharf

{"title":"The Herculean task of sedentary predators in disturbed habitats: the response of antlion larvae","authors":"Vesna Klokočovnik , Janja Borštnar Lampreht , Inon Scharf","doi":"10.1016/j.anbehav.2025.123123","DOIUrl":"10.1016/j.anbehav.2025.123123","url":null,"abstract":"<div><div>Habitat disturbance can significantly affect the ecological dynamics and behaviour of organisms, particularly those that are sedentary. This study investigates the responses of larvae of two antlion species, <em>Euroleon nostras</em> and <em>Myrmeleon formicarius</em> to a disturbance, namely stones of different mass, dropped into the pitfall traps. Additionally, we investigated the interaction between disturbance and different feeding conditions, providing insights into the ecological flexibility of these predators. Our findings revealed that removing the stone and maintaining the pit afterwards by the antlion larvae affected the larval mass, especially for the starved larvae, which lost more mass during the experiment. Fed <em>E. nostras</em> larvae were the only group to gain mass, whereas <em>M. formicarius</em> lost mass, indicating that <em>M. formicarius</em> might be more sensitive to disturbance. The changes in pit diameter paralleled the changes in mass; only fed <em>E. nostras</em> constructed larger pits at the end of the experiment. Different responses of the species to disturbance were also evident in relocation behaviour: <em>M. formicarius</em> relocated more frequently, particularly when larger stones were present, likely prioritizing relocation over energy-intensive stone removal. Stone removal behaviour did not differ between species but only according to the stone size relative to the larval size. Larvae threw out stones from the pit mostly if the stones were not larger than themselves. Heavier stones were either pushed to the pit wall or out of the pit. Our results suggest that the availability of prey, behavioural plasticity and adaptation to the natural habitat are crucial factors in the response of sedentary predators to disturbance.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123123"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy expenditure of Adélie penguins during the breeding season: females pay the cost in years of low food availability

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-18 DOI: 10.1016/j.anbehav.2025.123144

A.L. Machado-Gaye , M. Chimienti , A. Kato , Y. Ropert-Coudert , A. Barbosa , P. Bustamante , M. Cosse , J. Menéndez-Blázquez , N. Zaldúa , A. Soutullo

{"title":"Energy expenditure of Adélie penguins during the breeding season: females pay the cost in years of low food availability","authors":"A.L. Machado-Gaye , M. Chimienti , A. Kato , Y. Ropert-Coudert , A. Barbosa , P. Bustamante , M. Cosse , J. Menéndez-Blázquez , N. Zaldúa , A. Soutullo","doi":"10.1016/j.anbehav.2025.123144","DOIUrl":"10.1016/j.anbehav.2025.123144","url":null,"abstract":"<div><div>Changes in prey availability can lead to mismatches between consumers and resources, decreasing the fitness of consumers, especially during periods of high energy demand such as reproduction. We investigated interseasonal variation in the foraging behaviour of chick-rearing Adélie penguins, <em>Pygoscelis adeliae</em>, in a declining colony in the West Antarctic Peninsula to assess the impact of changes in prey abundance. Specifically, we analysed how these changes affect the energetic cost of males and females during the breeding season. Using information from foraging trips, diet, body condition and daily energy expenditure of 38 Adélie penguins breeding in Ardley Island, King George Island, in 2019/2020 and 2021/2022, we found that during low food availability conditions, penguins were forced to increase their foraging effort and their body mass was lower. Specifically, females extended their foraging trips, resulting in 40% higher energy expenditure compared to a year with high prey availability. We observed no significant changes in physiological condition, breeding success or trophic niche. The lower fat reserves and higher energy expenditure of females during the breeding season with low food availability may render them more vulnerable to the challenging conditions of the winter season, with potential negative consequences on population trends.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123144"},"PeriodicalIF":2.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The prevalence of weapon damage: a proportional meta-analysis

IF 2.3 2区生物学

Animal Behaviour Pub Date : 2025-03-17 DOI: 10.1016/j.anbehav.2025.123117

Sarah M. Lane , Erin L. McCullough

{"title":"The prevalence of weapon damage: a proportional meta-analysis","authors":"Sarah M. Lane , Erin L. McCullough","doi":"10.1016/j.anbehav.2025.123117","DOIUrl":"10.1016/j.anbehav.2025.123117","url":null,"abstract":"<div><div>Abstract</div><div>Sexually selected weapons are tools that are used in physical fights over mating opportunities. Individuals can face dire fitness consequences if they break their weapon and can no longer fight effectively; however, the costs and consequences of weapon damage have largely been ignored. In this study, the literature was systematically searched to examine the prevalence of weapon damage, and a phylogenetically controlled proportional meta-analysis was conducted to explore factors influencing the patterns of weapon damage across the animal kingdom. A total of 36 suitable studies were identified across 74 species and 13 orders for a total of 82 effect sizes. We found that weapon damage is common across taxa, with an average rate of damage of 9.4% across all observations. We found strong evidence that regenerative ability influences the patterns of weapon damage, with species capable of weapon regeneration exhibiting high prevalence of weapon damage. Herein, we discuss additional factors that may affect the likelihood, costs and consequences of weapon damage, including weapon size, weapon allometry, fighting behaviour and when and to what degree a species can regenerate its weapon. We argue that the risk of weapon damage is an important but underappreciated cost that could affect strategic fighting decisions, providing new insights into the role of weapon damage on the evolution of weapon morphology and contest behaviour within and among species.</div></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"222 ","pages":"Article 123117"},"PeriodicalIF":2.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0