Behavioral Ecology最新文献

Enhanced conspicuousness of prey in warmer water mitigates the constraint of turbidity for predators. 在温暖的水中，猎物的显著性增强，减轻了对捕食者浊度的限制。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-07-10 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf079

Costanza Zanghi, Jolyon Troscianko, Christos C Ioannou

{"title":"Enhanced conspicuousness of prey in warmer water mitigates the constraint of turbidity for predators.","authors":"Costanza Zanghi, Jolyon Troscianko, Christos C Ioannou","doi":"10.1093/beheco/araf079","DOIUrl":"https://doi.org/10.1093/beheco/araf079","url":null,"abstract":"Changes in environmental conditions impact predator-prey interactions by altering behavior through sensory and non-sensory (eg metabolic or cognitive) pathways. Elevated water temperature and turbidity are known to alter activity levels and anti-predator responses in prey fish, and are increasing globally as a result of anthropogenic activities. Less is known about how temperature and turbidity impact predators' ability to detect prey directly, or indirectly via changes to prey behavior. We quantified the detectability of Trinidadian guppies (Poecilia reticulata) free-swimming in a large arena from the perspective of a stationary visual predator (simulated as an underwater camera). We used a fully factorial experimental design testing the independent and combined effects of increased temperature and turbidity. We found that both stressors had a strong influence on the appearance of prey (objectively quantified as the mean magnitude of the optical flow in the videos). As expected, turbidity reduced the frequency of detection between the guppies and the simulated predator, ie the magnitude of optical flow exceeded the threshold for a \"detection event\" more often in clear water. Events were also shorter in duration in turbid water, reducing the time available for a predator to detect the prey. However, during an event, prey were more detectable in warmer water (ie the mean magnitude was greater). Although we found no evidence of interactive effects of turbidity and temperature on the response variables, their cumulative main effects suggest an antagonistic effect between the two stressors on the predator-prey dynamic overall.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf079"},"PeriodicalIF":2.5,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12288029/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144706127","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

The kin-selected context of dueling in horned aphids: cooperation or conflict? 角蚜虫决斗的亲属选择背景：合作还是冲突？

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-06-29 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf076

Keigo Uematsu, Man-Miao Yang, William Foster

{"title":"The kin-selected context of dueling in horned aphids: cooperation or conflict?","authors":"Keigo Uematsu, Man-Miao Yang, William Foster","doi":"10.1093/beheco/araf076","DOIUrl":"10.1093/beheco/araf076","url":null,"abstract":"We investigated the influence of relatedness on the function of dyadic butting contests over access to a food resource (plant phloem) in the group-living horned aphid Astegopteryx bambusae on bamboo leaves. Relatedness between dueling pairs did not differ significantly from that of randomly selected aphid pairs. Microsatellite genotyping showed that the average genetic relatedness between a dueling pair was 0.79 ± 0.12 (mean ± SD, N = 75), with 56% (42/75) of duels occurring between clonal pairs. Butting contests observed in the field lasted longer when the competing aphids were of similar age and when the attacker won, but they involved low costs in terms of time or injury. Neither the duration nor outcome of the contests was associated with the pairwise relatedness, suggesting that there was no kin-discrimination in the butting pair of aphids. 83% (50/60) of the contests between aphids of different ages were won by the older and larger aphid. These results suggest that the aphids discriminate between their opponents on the basis not of relatedness but of size or age. We suggest that the duels in these Astegopteryx aphids are not an aggressive fight for resources between different genotypes, but a low-cost method by which the aphids assess each other's reproductive value, providing an indirect fitness benefit for losing younger individuals that yield a feeding site to older kin. This provides a selective context for the evolution of the young, rather than old, altruistic soldiers that are observed in the open colonies of many cerataphidine species.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf076"},"PeriodicalIF":2.5,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12264482/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648364","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

No evidence for kin selection as an explanation for social group formation in clown anemonefish. 没有证据表明亲缘选择可以解释小丑海葵的社会群体形成。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-06-29 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf075

Theresa Rueger, Tina Adria Barbasch, Matishalin Patel, Steven Michael Bogdanowicz, Peter Michael Buston

{"title":"No evidence for kin selection as an explanation for social group formation in clown anemonefish.","authors":"Theresa Rueger, Tina Adria Barbasch, Matishalin Patel, Steven Michael Bogdanowicz, Peter Michael Buston","doi":"10.1093/beheco/araf075","DOIUrl":"10.1093/beheco/araf075","url":null,"abstract":"Social groups in which some individuals forgo reproduction and others reproduce, are one of the most remarkable products of evolution. To fully understand these social groups, we must understand both why non-breeders tolerate their situation and why breeders tolerate non-breeders. In general, breeders tolerate non-breeders because they help provision the breeders' offspring or the breeders themselves, but in some vertebrate societies the benefits that breeders accrue from non-breeders are surprisingly hard to detect. This raises the question: why do breeders tolerate non-breeders in such societies? Here, we test the hypothesis that breeders of the clown anemonefish (Amphiprion percula) will tolerate non-breeders because they are distant relatives who go on to inherit the territory. We use 40 polymorphic microsatellite loci to assess the pairwise relatedness of 683 individuals from 203 groups. We show that the mean pairwise relatedness among individuals from the same group is effectively zero, and no different from that found among individuals from the same reef or that found among individuals from the population at large. Further, we show that the mean pairwise relatedness found among breeder/breeder dyads is no different from that found among breeder/non-breeder dyads or that found among non-breeder/non-breeder dyads. We conclude that kin selection does not explain why breeders tolerate non-breeders in the clown anemonefish, and suggest that the explanation must lie with other, as yet untested, hypotheses: within-generation bet-hedging or mutualist-mediated benefits.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf075"},"PeriodicalIF":2.5,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12277695/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144681887","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

Wind alters plant-pollinator community structure, bee foraging rate & movements between plants. 风改变了植物传粉者的群落结构、蜜蜂的觅食率和植物间的运动。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-06-15 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf067

Nicholas J Balfour, Francis L W Ratnieks

{"title":"Wind alters plant-pollinator community structure, bee foraging rate & movements between plants.","authors":"Nicholas J Balfour, Francis L W Ratnieks","doi":"10.1093/beheco/araf067","DOIUrl":"10.1093/beheco/araf067","url":null,"abstract":"Wind is an important abiotic factor that influences an array of biological processes including animal behavior, but it is rarely considered in plant-pollinator interactions. Here, we investigate the impact of wind speed on plant-pollinator community structure under natural conditions. In our field experiment we observed threefold greater abundance of pollinators and double the species richness under low (< 0.5 m/s) versus moderate (> 2.5 m/s) wind speeds. Significant differences in plant-pollinator community structure were also observed, with Diptera most abundant under low wind conditions, and Hymenoptera predominant and Lepidoptera absent in windier conditions. Across three plant species, the foraging rates of both honey and bumble bees were 15% greater at low versus moderate wind speeds. Lastly, at greater wind speeds bees made more movements between plants, suggesting that wind may improve yield for crops that require cross-pollination. Overall, our findings show that wind is an important factor in determining which pollinator groups are active and that eusocial bees, which are often the most important pollinators, were little affected by moderate wind speeds. Our results raise several important issues for further study and suggest that the use of linear features such as trees and hedges that act as windbreaks may be beneficial to crop pollination and conservation efforts.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf067"},"PeriodicalIF":2.5,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12260157/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641649","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

Diel rhythmicity of activity and corticosterone metabolites in Arctic barnacle geese during breeding. 繁殖期间北极藤壶鹅的昼夜节律性及皮质酮代谢物。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-06-13 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf071

Margje E de Jong, Annabel J Slettenhaar, Rienk W Fokkema, Marion Leh, Mo A Verhoeven, Larry R Griffin, Eva Millesi, Børge Moe, Elisabeth Barnreiter, Maarten J J E Loonen, Isabella B R Scheiber

{"title":"Diel rhythmicity of activity and corticosterone metabolites in Arctic barnacle geese during breeding.","authors":"Margje E de Jong, Annabel J Slettenhaar, Rienk W Fokkema, Marion Leh, Mo A Verhoeven, Larry R Griffin, Eva Millesi, Børge Moe, Elisabeth Barnreiter, Maarten J J E Loonen, Isabella B R Scheiber","doi":"10.1093/beheco/araf071","DOIUrl":"10.1093/beheco/araf071","url":null,"abstract":"Birds that migrate from temperate areas to the Arctic to breed lose their strongest Zeitgeber of circadian organization when they cross the Arctic circle in spring - the 24h light-dark cycle. Under continuous daylight, diverse behavioral and physiological patterns have been detected in both free-ranging and laboratory animals. To better understand the evolution of plasticity in circadian clocks, it is essential to study behavioral and physiological rhythmicity in the context of a species' ecology. Employing a multifaceted approach, which included wildlife cameras, accelerometers, and noninvasive sampling of hormone metabolites, we investigated activity patterns and corticosterone rhythmicity in a migratory herbivore, the barnacle goose (Branta leucopsis), during its Arctic breeding season on Svalbard. We found that females showed a combination of both ultradian and diel rhythmicity in nest recesses and sleep during incubation. In both parents, these rhythms in activity continued also during the gosling rearing phase. During molt, many geese aligned activity with the prevailing tidal rhythm. Barnacle geese showed weak diel rhythmicity in excreted corticosterone metabolites (CORTm). This suggests that while Arctic geese may adopt an alternative Zeitgeber during the Arctic summer to maintain a diel rhythm, ultradian rhythmicity remains essential, allowing the geese to flexibly adjust their rhythms to environmental conditions.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf071"},"PeriodicalIF":2.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12211741/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144537958","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

Non-breeding European robins adjust their song in noisy environments. 非繁殖的欧洲知更鸟在嘈杂的环境中调整它们的歌声。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-06-12 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf070

Connor Proudfoot, William H J Norton

{"title":"Non-breeding European robins adjust their song in noisy environments.","authors":"Connor Proudfoot, William H J Norton","doi":"10.1093/beheco/araf070","DOIUrl":"10.1093/beheco/araf070","url":null,"abstract":"Noise pollution is a global threat to biodiversity, significantly affecting acoustic communication in birds and other taxa. While European robins (Erithacus rubecula) adjust their songs in response to urban noise during the breeding season, little is known about song adjustments during the non-breeding season, when song plays a crucial role in survival by helping secure winter territories with adequate resources and shelter. To better understand the effect of noise on avian communication, we investigate whether robins modify their non-breeding song in noisy environments. We analyed the autumn songs of 25 robins exposed to varying background noise levels and found that robins increase the minimum frequency of their songs and extend phrase duration by singing fewer but longer syllables per phrase in noisy environments-adjustments that may mitigate acoustic masking. Our results provide valuable insights into the broader impact of urbanization on bird communication and highlight the need to consider non-breeding vocal behavior in conservation efforts. These findings underscore the year-round impact of noise pollution on birdsong, suggesting it affects various aspects of avian life history. However, it remains unclear whether these adjustments have evolutionary consequences for survival, as changes in key song parameters may affect how rivals interpret signals. Therefore, future studies should explore how vocal plasticity influences winter territory quality, predation rates, and individual survival.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf070"},"PeriodicalIF":2.5,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12235003/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144590349","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

Torpor use in response to predation risk in a small, free-living bird. 一种小型、自由生活的鸟类为了应对捕食风险而使用的冬眠。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-06-11 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf069

Alice Barratt, Justin Welbergen, Ben Moore, Christopher Turbill

{"title":"Torpor use in response to predation risk in a small, free-living bird.","authors":"Alice Barratt, Justin Welbergen, Ben Moore, Christopher Turbill","doi":"10.1093/beheco/araf069","DOIUrl":"10.1093/beheco/araf069","url":null,"abstract":"Animal decisions trade-off the mortality risks of starvation and predation, and anti-predator behaviors generally incur a cost of reduced energy intake. Torpor and shallow rest-phase heterothermy are widespread physiological responses to starvation risk among small mammals and birds. Here, we present a field-based experimental test of the hypothesis that energy savings from torpor use can also reduce predation risk by moderating the energy cost of anti-predator behavioral responses in a small bird during winter. We manipulated perceived predation risk in wild populations of the superb fairy-wren (Malurus cyaneus) by playback of conspecific alarm calls during the daytime active-phase and tested for effects on body temperature measured continuously by telemetry during the nocturnal rest-phase. We found that alarm call playback was associated with subsequent rest-phase torpor bouts that were significantly deeper (minimum skin temperature: 28.7 ± 1.7 °C vs. 30.0 ± 1.5 °C) and longer (duration in torpor: 6.0 ± 2.7 h vs. 3.8 ± 2.3 h) compared to control periods. By demonstrating the connection between resting energy expenditure and energy costs of behavioral decisions during activity, our study has implications for understanding both the ecological functions of torpor and survival consequences of behavioral responses by small birds to environmental challenges.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf069"},"PeriodicalIF":2.5,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12207869/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144526343","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

Living with males leads to female physical injury in the leaf-footed cactus bug. 在叶足仙人掌虫中，与雄性生活在一起导致雌性身体受伤。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-06-11 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf068

Yichen Li, Christine W Miller

{"title":"Living with males leads to female physical injury in the leaf-footed cactus bug.","authors":"Yichen Li, Christine W Miller","doi":"10.1093/beheco/araf068","DOIUrl":"10.1093/beheco/araf068","url":null,"abstract":"Males in many species possess sexually selected weapons that they use to fight for mating opportunities. It is well established that male-male competition can lead to physical injuries for males. However, very few studies have looked at the physical consequences for conspecific females. We hypothesized that living with males in a species with male-male competition would result in female injury. Because larger female invertebrates typically have greater reproductive output, they have higher resource value for males and can elicit aggression and fighting. Thus, we further hypothesized that larger females in this context would receive more injuries. For this study, we focused on the leaf-footed cactus bug, Narnia femorata (Hemiptera: Coreidae), a species of insect in which males fight using their spiny and enlarged hindlegs. In just 2 h of observation, we documented males competing with other males in 61% of 103 trials. In 43% of these 63 competitions, females were physically contacted and sometimes attacked with a kick or squeeze. We left insects in social groups for 74 h and found that females living with multiple males had a higher likelihood of obtaining injuries (26.2% of 103 trials) compared to those living only with females (9.7% of 103 trials). In addition, larger females were more likely to be injured compared to smaller females. Our study highlights the harm that females can experience in species with male-male competition.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf068"},"PeriodicalIF":2.5,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12207884/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144526341","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

Cognitive processes are robust to early environmental conditions in two lizard species. 两种蜥蜴的认知过程在早期环境条件下是稳健的。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-05-30 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf048

Pablo Recio, Dalton C Leibold, Ondi L Crino, Kristoffer H Wild, Christopher R Friesen, Basile Mauclaire, Amelia Y Peardon, Daniel W A Noble

{"title":"Cognitive processes are robust to early environmental conditions in two lizard species.","authors":"Pablo Recio, Dalton C Leibold, Ondi L Crino, Kristoffer H Wild, Christopher R Friesen, Basile Mauclaire, Amelia Y Peardon, Daniel W A Noble","doi":"10.1093/beheco/araf048","DOIUrl":"10.1093/beheco/araf048","url":null,"abstract":"Animals must acquire new information through learning to adjust their behavior adaptively. However, learning ability can be constrained by conditions experienced during early development, when the brain is especially susceptible to environmental conditions. For example, temperature can result in phenotypically plastic adjustments to growth, metabolism, and learning in ectotherms. In vertebrates, thermal conditions can increase the production of glucocorticoid (GCs) - 'stress' hormones. Maternal GCs can be transmitted to offspring during development, potentially impacting their learning abilities. GCs and thermal environments are, therefore, predicted to have interactive effects on the development of learning in ectotherms. Here, we investigated the combined effects of prenatal corticosterone (CORT) - the main GC in reptiles-and incubation temperature on associative learning using two species of lizards, Lampropholis delicata and L. guichenoti. We manipulated CORT levels and temperature in a 2 × 2 factorial design, and then subjected juveniles to a color-associative learning task. We predicted that elevated CORT and low temperatures would impair associative learning. However, both species showed similar learning rates independently of treatment. Our results suggest that these two species may have evolved mechanisms to maintain learning performance despite prenatal challenges. We also found that color affected decision-making in both species. Overall, we observed a non-learned preference towards blue, underscoring the need to carefully select the color used in cognitive tests involving visual stimuli.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf048"},"PeriodicalIF":2.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12202996/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144526340","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

Too hot to reason? Experimental heatwaves affect cognitive traits in male guppies. 热到无法推理？实验热浪影响雄性孔雀鱼的认知特征。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2025-05-30 eCollection Date: 2025-07-01 DOI: 10.1093/beheco/araf061

Merel C Breedveld, Luna Dudine, Samuele Padovan, Marta Giacomazzo, Ranieri Verin, Clelia Gasparini

{"title":"Too hot to reason? Experimental heatwaves affect cognitive traits in male guppies.","authors":"Merel C Breedveld, Luna Dudine, Samuele Padovan, Marta Giacomazzo, Ranieri Verin, Clelia Gasparini","doi":"10.1093/beheco/araf061","DOIUrl":"10.1093/beheco/araf061","url":null,"abstract":"Heatwaves, increasingly common and intense due to climate change, are increasing mortality rates and disrupting vital functions. Recent research has begun exploring their impact on cognition. Since cognition underlies key fitness-related behaviors, such as foraging, predator avoidance, and mate choice, understanding the cognitive costs of heatwaves is crucial. Here, we investigate whether heatwaves impact cognition using male guppies (Poecilia reticulata) as a vertebrate model. We focused on males due to their behavioral consistency in cognitive tests and because they were previously observed to alter sexual behavior after a heatwave. Males were exposed to a 5-d experimental heatwave (32 °C) or control treatment (26 °C). The chosen temperatures are ecologically relevant for the species, fall within their natural habitat's thermal range, and reflect extreme climatic events that are projected to become even more frequent and severe under future climate scenarios. Following treatment, all fish were tested at 26 °C for spatial memory and learning, mate choice, inhibitory control, and anti-predator responses. We also conducted histopathological evaluations of brain tissue to investigate potential central nervous system lesions. The results show that heatwave exposure declined maze solving efficiency, affected mate choice-related cognitive capacities, and led to suboptimal anti-predatory responses. No effects were observed on inhibitory control or habituation. Importantly, heatwave exposure induced morphological alterations in the central nervous system, potentially explaining the observed changes in cognitive performance. Our study provides a comprehensive evaluation of heatwave impacts on cognitive function, highlighting the need of investigating their subtle yet significant effects to fully understand how heatwaves influence fitness beyond survival.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"36 4","pages":"araf061"},"PeriodicalIF":2.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12203089/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144526342","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