Animal Behaviour最新文献

{"title":"Sex roles in parental care in a species with precocial offspring and frequent brood desertion","authors":"Grant C. McDonald ,&nbsp;Zoltán Barta ,&nbsp;Barbara A. Caspers ,&nbsp;Tamás Székely ,&nbsp;András Kosztolányi","doi":"10.1016/j.anbehav.2024.06.007","DOIUrl":"10.1016/j.anbehav.2024.06.007","url":null,"abstract":"<div><p>Biparental care can be favoured when offspring care by both parents provides a stronger fitness incentive to parents than deserting their offspring. In species with precocial offspring, the burden of care is expected to be comparatively low, facilitating desertion by one parent and uniparental care by the abandoned partner. However, care patterns can vary widely between and within precocial species, with some parents deserting their offspring, while other families remain biparental. Understanding the details of the care delivered by males and females in families before desertion is important to provide insight into the mechanisms that influence the stability of biparental care. Here we used detailed behavioural observations from the brood care period to investigate the balance of care between male and female parents in a well-studied precocial shorebird, the Kentish plover, <em>Charadrius alexandrinus</em>, both within families where females subsequently deserted and within families that remained biparental until the offspring were independent. We found that both males and females expressed all care behaviours (brooding, vigilance and brood defence) characteristic of precocial species, and we utilized quantitative mutual entropy analyses to show that the division of parental labour (i.e. care task specialization) was unrelated to the maintenance of biparental care. We also found that while males and females provided broadly similar levels of care, there were subtle differences: females typically delivered slightly more care than males across offspring development, suggesting that sex differences in self-maintenance may underlie sex differences in care. Together our results indicate minor differences in the care patterns of males and females, consistent with theoretical predictions that the division of labour should be limited in populations with frequent desertion and uniparental care.</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 211-225"},"PeriodicalIF":2.3,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001581/pdfft?md5=0861320ff77fd5073101d5a8f6ff72fe&pid=1-s2.0-S0003347224001581-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845761","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}

{"title":"Haemosporidian infection is related to the expression of female plumage ornamentation in a wild passerine","authors":"Enrique González-Bernardo ,&nbsp;Gregorio Moreno-Rueda ,&nbsp;Carlos Camacho ,&nbsp;Jaime Muriel ,&nbsp;Jesús Martínez-Padilla ,&nbsp;Jaime Potti ,&nbsp;David Canal","doi":"10.1016/j.anbehav.2024.07.004","DOIUrl":"10.1016/j.anbehav.2024.07.004","url":null,"abstract":"<div><p>The role of plumage ornamentation as a signal of parasite infection is a key issue in the evolution of animal behaviour. Despite the undeniable role of host–parasite interactions in sexual selection, it is still unclear how parasites influence the variance in the expression of females displaying multiple ornaments. Here, by taking advantage of a long-term and individual-based, monitored population of pied flycatchers, <em>Ficedula hypoleuca</em>, in a Mediterranean area, we investigated the variation in the expression of wing patch (size) and forehead patch (occurrence and size) in relation to infections with haemosporidian parasites in breeding adult females. Haemosporidian infection was related to wing patch size, and this association varied in direction and magnitude depending on the origin of birds (locally born versus immigrant) and the type of breeding habitat (oakwood versus pine plantation). Specifically, differences in wing patch size were most evident among immigrant females breeding in the pine plantation, with noninfected females expressing larger wing patches than infected ones. Regarding the forehead patch, its occurrence was also modulated by haemosporidian infection through two-way interactions with bird origin (lower occurrence in locally born females) and breeding habitat type (lower occurrence among infected than uninfected females in the oakwood, whereas the opposite was true in the pine plantation). Only bird age predicted forehead patch size. Therefore, in addition to haemosporidian infection, the expression of these ornaments was related to extrinsic (breeding habitat) and intrinsic (age, origin) factors, which suggests the existence of trade-offs between physiological responses to infection and the expression of secondary sexual traits. Overall, our results suggest that plumage ornaments provide independent and reliable information on the haemosporidian infection status of female pied flycatchers.</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 63-79"},"PeriodicalIF":2.3,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001908/pdfft?md5=9bd1a75c36c1764deabff8751275e87c&pid=1-s2.0-S0003347224001908-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141942190","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}

{"title":"Host–parasite contact and sensitivity to parasitism predict clutch abandonment in cowbird hosts","authors":"Christina Petalas ,&nbsp;Antoine Turcotte-van de Rydt ,&nbsp;Simon Ducatez ,&nbsp;Mélanie F. Guigueno","doi":"10.1016/j.anbehav.2024.06.021","DOIUrl":"10.1016/j.anbehav.2024.06.021","url":null,"abstract":"<div><p>Abandoning a brood to maximize lifetime reproductive success may result from the current costs affecting future reproductive opportunities. In certain contexts, clutch abandonment can be an evolved breeding strategy rather than a generalized response to stressors such as inclement weather and predation. Obligate brood parasitism, a reproductive strategy in which a parasitic species relies solely on other species to raise its young, imposes fitness costs to hosts and could serve as a trigger for clutch abandonment. This cost, and the resulting clutch abandonment strategy, may vary according to contact with the parasite, sensitivity to parasitism and the value of the current reproductive effort (i.e. brood value). We conducted a phylogenetically controlled meta-analysis covering 85 host species of the three generalist cowbird species (<em>Molothrus</em> sp.) in which we examined the following effects on the abandonment (nest desertion and egg burial) of parasitized versus unparasitized clutches: habitat at a small scale (higher host–parasite encounter frequency in open versus forested habitats) and at a large scale (longer interaction between parasites and hosts in prairie versus nonprairie regions), brood value (relative value of a clutch) and host species sensitivity to brood parasitism (relative body mass). Parasitism increased clutch abandonment overall. This increase was strongest in open nonforested habitats, with smaller, more sensitive hosts being more likely to abandon their clutch. Brood value and occurrence in prairie regions did not affect clutch abandonment, indicating that recent, more fine-scale host–parasite interactions were more important than coevolutionary history. Therefore, the abandonment of a brood can be used in diverse parental care strategies, including antiparasitic defences of brood-parasitic hosts.</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 55-62"},"PeriodicalIF":2.3,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001842/pdfft?md5=046b000a22eb035f88a395947fc4ae26&pid=1-s2.0-S0003347224001842-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141732204","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}

{"title":"Kin-based spatial structure in a solitary small mammal as indicated by GPS dataloggers","authors":"Lindelani Makuya ,&nbsp;Neville Pillay ,&nbsp;Carsten Schradin","doi":"10.1016/j.anbehav.2024.06.022","DOIUrl":"10.1016/j.anbehav.2024.06.022","url":null,"abstract":"<div><p>Kin selection is important for understanding the evolution of social behaviour in group-living species. Yet, the role of kinship in solitary species has received little attention. We studied how kinship influences intraspecific variation in social organization and spatial structure in a predominantly solitary species, the bush Karoo rat, <em>Otomys unisulcatus</em>, from the Succulent Karoo semidesert of South Africa. We predicted that if social groups occur, they should consist of close kin. We further predicted that the spatial structure is not random, but that close kin live closer to each other. Over 5 years we performed trapping and focal animal observations and fitted mini-GPS dataloggers simultaneously on 125 neighbouring female bush Karoo rats to investigate how their spatial structure was influenced by kinship. Females were mainly solitary, although small social groups also occurred, all consisting of close kin, typically females, such as a mother and her adult daughter or sisters. Although females did have more nonkin than kin neighbours, kin lived closer to each other than nonkin. Daily ranges were larger in the breeding than in the nonbreeding season and overlapped more between kin than nonkin females. We conclude that kinship should be considered when studying solitary species as it might influence variation in social organization and spatial structure.</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 45-54"},"PeriodicalIF":2.3,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001854/pdfft?md5=2c3d7f9939f008c71a6ca066858a99f2&pid=1-s2.0-S0003347224001854-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729419","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}

{"title":"Double trouble: host behaviour influences and is influenced by co-infection with parasites","authors":"Maryane Gradito ,&nbsp;Frédérique Dubois ,&nbsp;Daniel W.A. Noble ,&nbsp;Sandra A. Binning","doi":"10.1016/j.anbehav.2024.06.016","DOIUrl":"10.1016/j.anbehav.2024.06.016","url":null,"abstract":"<div><p>Parasitism is increasingly seen as an ecological factor contributing to behavioural variation among individuals. Yet, the causal direction of the relationship between animal personality and parasites remains unclear. We measured behavioural traits (i.e. exploration, activity, boldness) in pumpkinseed sunfish, <em>Lepomis gibbosus</em>, before and after an experimental infection using cages in a lake where sunfish were naturally exposed to trematode and cestode infection for 1 month. Despite our initial assumptions (i.e. that all individuals would have the same risk of infection within a cage), we found that initial behavioural traits strongly influenced infection susceptibility: initially bolder and less active fish acquired a higher density of trematode and cestode parasites during the infection period. Following infection, fish body condition decreased with increasing cestode density, suggesting that infection is costly to hosts. Body condition was positively correlated with distance moved, a measure of activity, regardless of individual infection status. The repeatability of exploration and activity behaviour and the strength of the activity–exploration correlation (i.e. behavioural syndrome) were reduced following parasite exposure. Distance moved and trematode density were negatively correlated, suggesting that this infection decreases host activity levels. Since trematodes have a complex life cycle with piscivorous birds as a final host, a decrease in activity following infection may make infected fish more susceptible to bird predation, benefiting the parasite. Our results highlight the close links between behaviour and parasitism. We propose that two mechanisms may simultaneously operate: initial host behaviour influences their risk of infection, and infection introduces variation in the behavioural traits of infected hosts.</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 31-44"},"PeriodicalIF":2.3,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639111","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}

{"title":"Editors Page","authors":"","doi":"10.1016/S0003-3472(24)00199-4","DOIUrl":"10.1016/S0003-3472(24)00199-4","url":null,"abstract":"","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"214 ","pages":"Page i"},"PeriodicalIF":2.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001994/pdfft?md5=a9af7dace95b3476619deb89b46577cd&pid=1-s2.0-S0003347224001994-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141637369","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}

{"title":"Short photoperiods end autumn migration in a naïve diurnal migrant","authors":"Nicholas P. Huffeldt,&nbsp;Giuseppe Bianco,&nbsp;Jessica M.V. Floyd,&nbsp;Susanne Åkesson","doi":"10.1016/j.anbehav.2024.06.011","DOIUrl":"10.1016/j.anbehav.2024.06.011","url":null,"abstract":"<div><p>Many migratory animals use daylength, or photoperiod, to signal when to migrate and transition between annual phenological states. Whether animals use photoperiod as a temporal or spatial cue while migrating, however, requires additional empirical support. We used hatch-year dunnocks, <em>Prunella modularis</em> (a songbird), caught during their first migration in southern Sweden to elucidate whether migratory animals incorporate photoperiod as a spatiotemporal cue into their endogenous migratory program during migration. We exposed the migratory-naïve to light environments that simulated either the local photic conditions or a shorter daylength and larger transitions between photoperiods. All birds experienced local geomagnetic conditions. We hypothesized that migratory dunnocks used photoperiod to inform their first migration and predicted that the experimental treatment represented either a spatial displacement to the north or a temporal advancement towards winter at the capture site compared to the local control conditions. We found, though, that the short photoperiods terminated the expression of the migratory phenotype compared to controls by reducing body mass gain and ending migratory activity, indicating that the endogenous migratory program integrates photoperiod during migration. The incorporation of photoperiod into the endogenous program may complement geomagnetic cues to ensure ending migration at the correct time and location. The incorporation of photoperiod can also provide a mechanism that facilitates poleward shifts of overwintering distribution under climate change by allowing migrants to overwinter in newly suitable habitat at higher latitude (i.e. short stopping).</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 23-29"},"PeriodicalIF":2.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001623/pdfft?md5=06e70e062cb6e5b2b624a0eee6b09265&pid=1-s2.0-S0003347224001623-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639110","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}

{"title":"Association Page","authors":"","doi":"10.1016/S0003-3472(24)00200-8","DOIUrl":"10.1016/S0003-3472(24)00200-8","url":null,"abstract":"","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"214 ","pages":"Page ii"},"PeriodicalIF":2.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224002008/pdfft?md5=b7bc48cf6295a857c76bc2cf37882616&pid=1-s2.0-S0003347224002008-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141637370","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}

{"title":"Nest construction and its effect on posthatching family life in the burying beetle Nicrophorus vespilloides","authors":"Eleanor K. Bladon,&nbsp;Rebecca M. Kilner","doi":"10.1016/j.anbehav.2024.06.018","DOIUrl":"10.1016/j.anbehav.2024.06.018","url":null,"abstract":"<div><p>Through the effort required to construct them, the microenvironmental conditions they impose on the family and their indirect influence on posthatching care, nests play a key role in influencing family life. We combined experimental evolution with cross-fostering experiments on laboratory populations of <em>Nicrophorus vespilloides</em> to investigate three ways in which the nest can contribute more broadly to parental investment. We used replicate populations of <em>N. vespilloides</em> that had evolved for 42 generations under contrasting regimes of care. Populations were either able to supply posthatching care (‘Full Care’) or prevented from supplying any posthatching care (‘No Care’). Research on these populations has previously shown that the No Care populations evolved to build rounder nests, more rapidly, by Generation 14. Here we found (1) larvae raised by Full Care parents on nests prepared by parents from the No Care population did not attain a higher mass by the end of larval development than larvae in other treatments. However, we did discover that (2) cross-fostering nests between families consistently reduced larval mass, and to a similar extent whether nests were cross-fostered between or within the populations. We suggest that cross-fostering disrupted the chemical environment on and around the nest since we found no evidence that (3) nests mediate interactions between males and females. The duration of paternal care was consistently shorter than the duration of maternal care, and even shorter for males from the No Care populations than males from the Full Care populations. Nevertheless, the duration of male care did not predict variation in duration of female care. In short, although the nest is the substrate for burying beetle family life, we found little evidence that it had evolved divergently in our experimental populations to influence parental investment.</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 11-22"},"PeriodicalIF":2.3,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001817/pdfft?md5=20e2cb732883b1489f3a8ed036fa14f2&pid=1-s2.0-S0003347224001817-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639109","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}

{"title":"Distracted foragers: competitors impair foraging efficiency, accuracy and speed for eastern grey squirrels","authors":"Julie A. Teichroeb,&nbsp;Hossein Ghorbani,&nbsp;Kian Fallah,&nbsp;Eric N. Vasey","doi":"10.1016/j.anbehav.2024.06.017","DOIUrl":"10.1016/j.anbehav.2024.06.017","url":null,"abstract":"<div><p>Social foraging can be beneficial, but it can also disrupt optimal foraging strategies. Animals possess limited capacity for attention allocation and distractions may impact their rates of food acquisition. Attention to conspecific food competitors can prevent kleptoparasitism but likely affects food intake in multiple ways. We used two field experiments to assess the impact of nearby competitors on urban eastern grey squirrel, <em>Sciurus carolinensis</em>, foraging in a forest setting on the University of Toronto Scarborough campus. We used a tube apparatus in the first experiment to examine foraging efficiency and a tipping container apparatus in the second experiment to examine foraging speed (handling time) and accuracy. Competing squirrels within 1<!--> <!-->m or having just been involved in chasing or aggressive physical contact with competitors led to decreases in foraging efficiency, speed and accuracy. Competitors within 5<!--> <!-->m of focal squirrels did not impact foraging measures. Over the course of the experiments, squirrels adapted to solving foraging apparatuses in the presence of competitor(s) and improved their efficiency and accuracy but not their speed. Vigilance rates were greater for squirrels that had competitors nearby; thus, decreases in foraging efficiency, accuracy and speed seemed to be caused by the need to allocate attention to conspecifics. These experiments show that social foraging impairs optimal food acquisition for individual eastern grey squirrels.</p></div>","PeriodicalId":50788,"journal":{"name":"Animal Behaviour","volume":"215 ","pages":"Pages 241-250"},"PeriodicalIF":2.3,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0003347224001805/pdfft?md5=5e096afa7b1d41616e1d906e4f183bff&pid=1-s2.0-S0003347224001805-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141700134","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}