Behavioral Ecology最新文献

Group size predicts prenatal investment and offspring growth in a cooperatively breeding bird. 群体大小预测了合作繁殖鸟类的产前投资和后代生长。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-09-03 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag095

Andries K Janse van Vuuren, Roberto Vento, Ara Monadjem, Kat Bebbington, Kevin D Matson, Sjouke A Kingma

{"title":"Group size predicts prenatal investment and offspring growth in a cooperatively breeding bird.","authors":"Andries K Janse van Vuuren, Roberto Vento, Ara Monadjem, Kat Bebbington, Kevin D Matson, Sjouke A Kingma","doi":"10.1093/beheco/arag095","DOIUrl":"10.1093/beheco/arag095","url":null,"abstract":"Cooperative breeding, where seemingly altruistic helpers forgo reproduction to assist in raising the offspring of others, is a puzzle for biologists because it appears to contradict evolutionary principles of selfishness. One potential explanation is that helpers enhance group productivity, thus improving the direct fitness of breeders and providing indirect genetic and group-living benefits for helpers. In many species, however, helper presence does not actually enhance offspring production, raising the question of whether helpers instead either improve offspring quality (rather than quantity) or allow breeders to reduce prenatal investment (thereby increasing breeders' condition and future reproduction). In arrow-marked babblers (Turdoides jardineii), helpers do not increase the number of fledglings produced. To test whether helpers instead improve offspring quality or compensate for reduced prenatal investment, we investigated how egg volume, offspring growth, and nestling provisioning rates vary with group size. Breeding females in larger groups laid smaller eggs, but also produced heavier fledglings than those from smaller groups. This suggests that helpers in larger groups not only facilitate reduced prenatal maternal investment, but actually over-compensate for reduced egg sizes. Interestingly, larger groups did not feed nestlings more, suggesting that over-compensatory nestling growth may result from larger groups providing higher-quality food. Our results show that helping can be selected for via different mechanisms acting on both breeders and offspring, and that these can apply simultaneously within a single species. We highlight that variation in life history may explain inter-specific differences in mechanisms by which helpers improve group productivity.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag095"},"PeriodicalIF":2.2,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13540718/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148886162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Links between color conspicuousness, territorial behavior, and steroids in a color polymorphic lizard. 颜色多态蜥蜴的颜色显著性、领地行为和类固醇之间的联系。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-08-26 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag105

Cristina Romero-Diaz, Jake A Pruett, Emília P Martins

{"title":"Links between color conspicuousness, territorial behavior, and steroids in a color polymorphic lizard.","authors":"Cristina Romero-Diaz, Jake A Pruett, Emília P Martins","doi":"10.1093/beheco/arag105","DOIUrl":"10.1093/beheco/arag105","url":null,"abstract":"Discrete color polymorphisms often correlate with other traits, forming suites of characteristics that may be signaled and inform mate-choice decisions and/or dominance interactions with conspecifics. Unraveling the adaptive function and maintenance of stable color polymorphisms thus requires understanding these links and the context in which color traits are used. Here, we conducted a field experiment with robotic models to study the relationship between color morph, territorial behavior,, and circulating hormones, namely testosterone and corticosterone, in a male-male competition framework using the color polymorphic lizard Sceloporus consobrinus. We found that yellow and orange male color morphs are conspicuous and can be reliably distinguished by conspecifics, making color differences suitable for morph-specific signaling. Orange males exhibited higher baseline rates of push-up displays and bouts of movement compared to yellow males. Lizards of both morphs strongly increased aggressive display behavior in response to intruder robotic models of either the same or different color morph. However, color morphs did not differ in body size (SVL), body condition or plasma hormonal content (testosterone and corticosterone), suggesting that color could convey information regarding alternative territorial behavior but does not signal differences in individual male \"quality\" or physiological hormonal state. Color may thus not be sufficient, or the most informative signal in the context of agonistic male contests. Aggressive motion displays may be more effective as a signal of a morph's resource holding potential than static color. The lack of convergence in correlated phenotypes across similarly polymorphic taxa further suggests that patterns of trait integration are rather species-specific.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag105"},"PeriodicalIF":2.2,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13540734/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148886082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predator hunting modes induce varied selection pressures on prey personality. 捕食者的捕猎模式对猎物的个性产生了不同的选择压力。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-08-25 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag097

Rebecca K McKee, Storm Miller, Carl N Keiser, Marin P Chester, Kristen M Hart, Robert A McCleery

{"title":"Predator hunting modes induce varied selection pressures on prey personality.","authors":"Rebecca K McKee, Storm Miller, Carl N Keiser, Marin P Chester, Kristen M Hart, Robert A McCleery","doi":"10.1093/beheco/arag097","DOIUrl":"10.1093/beheco/arag097","url":null,"abstract":"Consistent individual differences in animal behavior-ie, personalities-have been documented in many taxa to have important fitness consequences in the context of predator-prey interactions. Multiple mechanisms have been suggested to maintain variation in prey personality traits, including life-history tradeoffs and divergent selection pressures from predators with different hunting strategies. However, empirical evidence for these hypotheses has been limited by a lack of data originating from complex multipredator systems in situ. To address this gap and evaluate these 2 mechanisms, we collected hispid cotton rats (Sigmodon hispidus) in the Florida Everglades and quantified 3 behavioral traits in the field. After releasing rats at their point of capture, we monitored their survival in their natural habitat where they faced threats from a diversity of ambush (snakes) and active predators (mammals; birds). Using Cox proportional hazards regression models and competing risks models, we assessed the effect of boldness, activity, and docility on rodent predation risk. Contrary to conventional predictions that bolder and more active individuals would face higher predation risk due to life-history tradeoffs, we found that the impact of these traits on prey survival varied with the predators' hunting modes: shyer, more active individuals were more likely to be killed by active predators, whereas less active rats appeared more likely to be killed by ambush predators. Our study supports the hypothesis that a diversity of predator hunting strategies may help maintain trait variation in prey populations.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag097"},"PeriodicalIF":2.2,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13540721/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148886130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Differential weighting of lion vocalizations and oxpecker alarm calls in giraffes. 狮子的叫声和长颈鹿的oxpecker报警叫声的不同权重。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-08-20 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag099

Anton Baotic

{"title":"Differential weighting of lion vocalizations and oxpecker alarm calls in giraffes.","authors":"Anton Baotic","doi":"10.1093/beheco/arag099","DOIUrl":"10.1093/beheco/arag099","url":null,"abstract":"Prey often assess predation risk using multiple sources of information that differ in immediacy and reliability. How prey differentially weight direct predator-associated cues and heterospecific alarm cues remains a central question in behavioral ecology. To investigate this, playback experiments were conducted on free-ranging, predator-experienced Southern giraffes (Giraffa giraffa), using lion (Panthera leo) vocalizations and red-billed oxpecker (Buphagus erythrorhynchus) alarm calls presented in different positions within sequential playback trials. Lion vocalizations consistently elicited strong vigilance responses regardless of playback presentation order, indicating that giraffes assigned greater behavioral weight to direct predator-associated information. Giraffes also responded to oxpecker alarm calls, although responses were generally weaker and more variable than responses to lion vocalizations, suggesting that indirect heterospecific cues were weighted less strongly than direct predator cues. Evidence that preceding playback exposure strongly influenced subsequent vigilance responses was limited, as lion vocalizations continued to elicit stronger responses than oxpecker alarm calls across successive playbacks. Females additionally exhibited generally stronger vigilance responses than males across playback conditions. Together, these findings suggest that giraffes differentially weight multiple sources of risk-related acoustic information during antipredator responses.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag099"},"PeriodicalIF":2.2,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13526515/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148863450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Condition dependence of the multimodal courtship of a parasitoid wasp (Leptopilina heterotoma). 拟寄生蜂（Leptopilina heterotoma）多模式求偶的条件依赖性。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-08-06 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag077

Janka Plate, Taina Conrad, Johannes Stökl

{"title":"Condition dependence of the multimodal courtship of a parasitoid wasp (Leptopilina heterotoma).","authors":"Janka Plate, Taina Conrad, Johannes Stökl","doi":"10.1093/beheco/arag077","DOIUrl":"10.1093/beheco/arag077","url":null,"abstract":"Courtship displays often consist of more than 1 modality, despite additional costs associated with multiple modalities. Because courtship signals under strong sexual selection often show heightened condition dependence, they may convey information about mate quality. However, much of the research on condition dependence has focused on individual modalities. Theoretically, different modalities within 1 multimodal signal could show different degrees of condition dependence, depending on how strong the selection pressure is on each modality. Here, we investigate how male condition affects the multimodal courtship of the parasitoid wasp Leptopilina heterotoma. Specifically, we tested how 2 components of the multimodal courtship-a chemical signal (cuticular hydrocarbons, CHCs) and a vibratory signal (wing fanning)-are affected by age and nutritional state. We found that the 2 modalities responded differently to the male condition: Wing fanning was affected by both age and nutrition, whereas the chemical profile was only affected by age. In combination with previous studies, we conclude that wing fanning signals male quality and thus should be condition dependent, while the CHC profiles signal species identity and should remain stable. This further supports that L. heterotoma has a multimodal courtship display that conveys multiple messages. Additionally, we show that males increase their wing fanning frequency when mounted on the female. This behavioral adjustment during the courtship sequence is likely an energy-saving strategy, given the high energetic cost of wing fanning.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag077"},"PeriodicalIF":2.2,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13445980/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148683507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyandry is shaped by male mating behavior in house mice living in semi-natural conditions. 一妻多夫制是由生活在半自然条件下的家鼠的雄性交配行为形成的。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-08-06 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag084

Fragkiskos Darmis, Anja Guenther

{"title":"Polyandry is shaped by male mating behavior in house mice living in semi-natural conditions.","authors":"Fragkiskos Darmis, Anja Guenther","doi":"10.1093/beheco/arag084","DOIUrl":"10.1093/beheco/arag084","url":null,"abstract":"Polyandry is widespread across animals, yet its underlying causes and consequences remain unclear in natural populations. Recent work suggests that spatial and temporal variation in the environment shape the causes and consequences of polyandry. Here, we extend this research by testing whether one consequence of polyandry, multiple paternity, is influenced by females' social environment, specifically the prevalence of male alternative reproductive tactics (ARTs), territorials and roamers. We studied semi-natural populations of house mice (Mus musculus domesticus) under different food quality treatments. Doing so allowed us to explore whether the relationship between male ARTs and multiple paternity depends on environmental conditions, which are expected to mediate the relative costs and benefits of reproductive investment. Using microsatellite genotyping, we assigned paternity to 329 litters produced by 257 females across 5 generations. We then classified the sires of these litters as territorials or roamers based on their reproductive behavior around conception and quantified each sire's reproductive contribution to each litter. Multiple paternity was strongly associated with the presence of roamers, which were twice as likely to occur in multiple-sired litters compared with territorials. Territorials still sired most offspring, an effect consistent with roamers engaging in sneaky/opportunistic matings. However, we found no clear evidence that environmental conditions shift how ARTs contribute to multiple paternity. Together, our results demonstrate a tight link between female mating outcomes and male ARTs across environments, implying that the drivers of polyandry depend on the social environment. By explicitly linking ARTs to multiple paternity, our study provides a mechanistic understanding on how social dynamics shape reproductive outcomes in mating systems where both sexes mate multiply.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag084"},"PeriodicalIF":2.2,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13445617/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148683441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seasonal variation in trans-oceanic flight and island use in a migratory falcon. 越洋飞行的季节变化和在岛屿上使用的候鸟。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-08-03 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag094

Meixu Chen, Duarte S Viana, Jordi Figuerola, Laura Gangoso, Wouter M G Vansteelant

{"title":"Seasonal variation in trans-oceanic flight and island use in a migratory falcon.","authors":"Meixu Chen, Duarte S Viana, Jordi Figuerola, Laura Gangoso, Wouter M G Vansteelant","doi":"10.1093/beheco/arag094","DOIUrl":"10.1093/beheco/arag094","url":null,"abstract":"Wind conditions play a major role in determining how birds negotiate ecological barriers during long-distance migration. Migrants typically minimize flights over barriers in opposing winds, while crossing the same barriers directly in supportive winds. Nevertheless, even in supportive conditions, direct barrier-crossings may be associated with an elevated risk of fatigue. At the same time, barrier-crossings may be facilitated by the availability of steppingstones. We aimed to understand how seasonal ocean-crossings of Eleonora's falcons (Falco eleonorae) compare in terms of wind support, flight effort, and the use of remote islands. To do this we combined over a decade of GPS-tracking data from 19 individuals (2012 to 2022) with wind data from an atmospheric reanalysis model. Despite far greater wind support in spring, falcons achieved similar ground speeds in both seasons, because they flew at much lower airspeeds in spring (8.8 ± 1.7 m/s) than in autumn (13.2 ± 2.6 m/s). Overall, it took falcons twice as many flight hours to complete a 40% greater air distance in spring compared with autumn. More islands are available along the spring route, and 57.9% of falcons used an island during at least 1 spring crossing, compared with 21.1% in autumn. In spring, island use increased with weaker wind support, with falcons spending the night on islands, and apparently maximizing daytime flight by initiating ocean-crossings at dawn. Overall, wind conditions only partially offset the seasonal difference in falcons' crossing distance and effort. Isolated islands may be an overlooked factor explaining the configuration of falcons' ocean-crossing corridors.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag094"},"PeriodicalIF":2.2,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13487336/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148787425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ravens (Corvus corax) use conspecifics and heterospecifics to navigate risky foraging scenarios. 乌鸦（Corvus corax）使用同种和异种来导航危险的觅食场景。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-07-30 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag093

Silvia Damini, Arnout Lindeman, Awani Bapat, Petra Sumasgutner, Thomas Bugnyar

{"title":"Ravens (Corvus corax) use conspecifics and heterospecifics to navigate risky foraging scenarios.","authors":"Silvia Damini, Arnout Lindeman, Awani Bapat, Petra Sumasgutner, Thomas Bugnyar","doi":"10.1093/beheco/arag093","DOIUrl":"10.1093/beheco/arag093","url":null,"abstract":"Foraging animals need to balance the trade-off between the benefits of exploiting new resources and the unknown risks they entail. Changing environments are especially challenging, as this balance between risk and reward needs to be constantly reevaluated. One strategy animals, and in particular scavengers employ, is using conspecifics and heterospecifics as sources of information to access food. In this study, we focused on free-ranging ravens that habitually forage in a wildlife park together with heterospecifics (boars) and tested their responses to unfamiliar and unpredictable foraging situations. In the 2-sites experiment (E1), we presented them with a choice between an unfamiliar (new) and a familiar (old) foraging site; in the object experiment (E2), we presented them with an object, otherwise not seen in the wildlife park, positioned randomly next to 1 of the sites. In both experiments, we found that ravens delayed their initial approach until the boars reached the food. In E1, ravens took longer to approach the food; stole more food from conspecifics but visited in larger numbers at the new site compared with the old. In conclusion: they flexibly used others, including heterospecifics, as sources of knowledge and means to access food. In E2, the object had a stronger aversive effect at the old site than at the new site, suggesting that the effect of unpredictability is stronger in familiar environments, where it might cause an expectancy violation. Our findings highlight that the behavior toward conspecifics and heterospecifics should be considered when studying scavengers' adaptability to changing environments.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag093"},"PeriodicalIF":2.2,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13475124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148757803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of multiple stressors on the behavior of fish in the presence and absence of a predator. 在捕食者存在和不存在的情况下，多种应激源对鱼类行为的影响。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-07-29 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag083

Amelia Munson, Daphne Cortese, Izzy C Tiddy, Helena Norman, Shaun S Killen

{"title":"Effects of multiple stressors on the behavior of fish in the presence and absence of a predator.","authors":"Amelia Munson, Daphne Cortese, Izzy C Tiddy, Helena Norman, Shaun S Killen","doi":"10.1093/beheco/arag083","DOIUrl":"10.1093/beheco/arag083","url":null,"abstract":"Temperature and oxygen concentration can alter the behavior of animals. While often studied in isolation, these factors frequently co-occur. Together they may have nonadditive effects. The effect of abiotic stressors may also change in the presence of biotic stressors, like predators, due to altered costs and benefits of behaviors. Additionally, species may balance the demands of co-occurring stressors differently depending on their unique needs. Here, we investigated the effects of acute exposures to elevated temperature (16 °C versus 12 °C) and decreased dissolved oxygen (30% versus 100% DO) on the social behavior and activity of two co-occurring freshwater fish (common minnow, Phoxinus phoxinus, and three-spined stickleback, Gasterosteus aculeatus) before and after a simulated predator attack. Prior to the release of the model predator, the effect of one stressor was dependent on the other stressor in minnows. Evidence suggested that minnows were more social in warmer waters, but only in hypoxic conditions, and were less active under hypoxia, but only in warm water. Sticklebacks were more active in warm water at both oxygen concentrations. Following predator release, there were no differences in social behavior, likely because of overall reductions in activity. Our study highlights the need to consider stressor combinations. Minnows appeared to compensate for one abiotic stressor such that effects were only apparent when the stressors were experienced together. However, the arrival of the \"predator\" masked differences between the treatment groups. Different responses between the species suggest that studies in species interactions are needed to understand community level impacts of multiple stressors.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag083"},"PeriodicalIF":2.2,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13448412/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148688488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Factors associated with breeding site fidelity in the sex-role reversed red phalarope. 性别角色反转的红蝴蝶结与繁殖地点保真度有关的因素。

IF 2.2 3区环境科学与生态学

Behavioral Ecology Pub Date : 2026-07-28 eCollection Date: 2026-09-01 DOI: 10.1093/beheco/arag090

Peter Santema, Johannes Krietsch, Bart Kempenaers

{"title":"Factors associated with breeding site fidelity in the sex-role reversed red phalarope.","authors":"Peter Santema, Johannes Krietsch, Bart Kempenaers","doi":"10.1093/beheco/arag090","DOIUrl":"10.1093/beheco/arag090","url":null,"abstract":"When birds breed in multiple years, they can either return to their former breeding site or disperse to a new area. Consistent with theoretical predictions, the degree of breeding site fidelity often differs between the sexes in relation to the mating system of a species. However, most research has focused on species with conventional sex roles. Studying socially polyandrous species, in which typical sex roles are reversed, may provide insights into the drivers of breeding site fidelity in each sex. We color-banded 169 male and 184 female red phalaropes Phalaropus fulicarius, a species in which females compete for access to males (female access polyandry), and examined factors that predicted their return to the study area. Breeding site fidelity was relatively low, but substantially higher in males (20.7%) than in females (4.3%). For both sexes, the probability of returning was associated with local breeding performance: males that attended a nest in the study area were more likely to return than males without a nest, and females that locally bred with 2 males were more likely to return than those that only produced a clutch for a single male. Our findings are consistent with the prediction that site fidelity should be male-biased in species with a female-access polyandrous mating system. Our study also highlights that breeding site fidelity is associated with local breeding success, even in a species that shows a reversal of typical sex-roles, where individuals do not defend a territory, and breed in an environment that is highly unpredictable between years.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"37 5","pages":"arag090"},"PeriodicalIF":2.2,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13455084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148705352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0