BEHAVIORAL ECOLOGY行为生态学
BEHAVIORAL ECOLOGY(英文缩写 BEHAV ECOL),ISSN 1045-2249,eISSN 1465-7279,中文译名:行为生态学 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-10-01 至 2026-09-30，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 3.087 | Q1 |
| 2022 | 2.400 | Q1 |
| 2023 | 2.500 | Q1 |
| 2024 | 2.200 | Q1 |
| 2025 | 2.200 | Q1 |
BEHAVIORAL ECOLOGY 最新收录文献
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1. Group size predicts prenatal investment and offspring growth in a cooperatively breeding bird.
PMID:日期:2026-09-03Cooperative 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 (), 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.
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2. Maternal flexibility in Galápagos sea lions mitigates climate impacts but not population decline.
PMID:日期:2026-09-01The Galápagos sea lion is an endangered marine apex predator that has experienced a 50% to 75% population decline over the last 50 yr. Using 21 yr of data, we present the first long-term analysis of pupping trends and pup survival in this species, revealing how extreme climate oscillations may shape population dynamics and future trends. We found that the Caamaño colony has been in decline since monitoring began in 2003, with the rate accelerating significantly after the 2010 reproductive period. This pattern cannot be explained by climate effects or reduced female fecundity but is more likely the result of decreasing recruitment due to lowered juvenile survival. Although there has been no overall change in median pupping point date, there has been a significant shortening of the duration of the pupping period since the acceleration of the population decline. We found that maternal foraging strategy has a significant effect on pupping timing, and its interaction with resource availability causes further interannual variation in timing. Male pups are born significantly earlier suggesting sex differences in gestational length or implantation. Although climate does affect pup survival to yearling age, there has been no temporal change in survival over the study period. Body condition at birth and juvenile presence within the colony have a positive impact on pup survival. Our results reveal that Galápagos sea lions exhibit resilience to the extreme climate variability of their environment through reproductive plasticity around parturition and that their continued decline is likely driven by reduced recruitment and increased juvenile mortality.
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3. Synchronous human-dolphin foraging increases fishing success despite prey unpredictability.
PMID:日期:2026-08-28Foraging theory predicts that individuals adjust their behavior in response to environmental conditions and prey availability. One solution to finding and capturing unpredictable prey is social foraging, yet it remains unclear whether its benefits arise from behavioral coordination itself or simply from predators co-occurring under favorable environmental conditions. We examine how environmental conditions shape the outcome of social foraging between predators-dolphins and human fishers-that forage together on patchy, ephemeral migratory mullet schools. Using fisher catch as our empirical measure of foraging success, we test whether mullet abundance and catch are influenced by local environmental conditions, or whether social foraging buffers fishers from fluctuations in prey availability. Using confirmatory path analysis, we investigate the links among environmental conditions, mullet abundance, predators' abundance, and synchronous behavior to determine their relative influence on prey capture. Our results indicate 2 pathways to higher prey capture. First, fishers catch more mullet when these are more abundant (typically under northerly winds), but environmental conditions do not predict dolphin-fisher foraging synchrony. Second-and independently-more dolphins are present during flood tides, which leads to more fishers, more synchronous foraging, and more mullet caught. These moment-by-moment analyses demonstrate that behavioral coordination, rather than prey availability or shared environmental responses alone, is the primary driver of fisher success. More broadly, our results provide a mechanistic understanding of how social foraging can buffer predators against environmental variability, highlighting the role of coordination in overcoming prey unpredictability.
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4. Attraction to water and polarization in dragonflies and damselflies along a light pollution gradient.
PMID:日期:2026-08-27Aquatic insects, like odonates, rely on polarized light as a visual cue to locate water bodies for reproduction. However, artificial polarization from light pollution can lead them into ecological traps. This study investigates odonate preference for polarized light cues compared with other sensory cues associated with water perception, and the effects of exposure to artificial polarization on their sensitivity to these cues. This study tests whether artificial polarization imposes a selective pressure that modifies odonate behavior and sensitivity to water and polarization signals. We predicted that odonate species in areas with higher light pollution would show a reduced preference for anthropogenic polarizing traps and an increased preference for natural water bodies. Our multiple-choice experiment revealed interspecific differences in cue attraction, with some species preferring polarizing traps while others favored water or color cues. Species attracted to the ecological light traps were always a subset of the total species present in each locality, indicating that most species are not attracted to ecological traps. Surprisingly, we found few significant differences in odonate behavior between polarization exposure categories, suggesting either weak selective pressure, prioritization of other sensory cues, or existing physiological-behavioral strategies that allowed them to avoid these ecological traps. We observed sex disparities in susceptibility to all experimental surfaces, with males showing greater attraction, potentially due to differences in habitat selection criteria. While evidence of strong selective pressure from light pollution is lacking, a reduction in light pollution near water bodies is needed to conserve odonates and aquatic insect populations.
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5. Links between color conspicuousness, territorial behavior, and steroids in a color polymorphic lizard.
PMID:日期:2026-08-26Discrete 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 . 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.
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6. Predator hunting modes induce varied selection pressures on prey personality.
PMID:日期:2026-08-25Consistent 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 () 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.
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7. Differential weighting of lion vocalizations and oxpecker alarm calls in giraffes.
PMID:日期:2026-08-20Prey 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 (), using lion () vocalizations and red-billed oxpecker () 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.
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8. Polyandry is shaped by male mating behavior in house mice living in semi-natural conditions.
PMID:日期:2026-08-06Polyandry 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 () 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.
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9. {"_":"Condition dependence of the multimodal courtship of a parasitoid wasp ().","i":["Leptopilina heterotoma"]}
PMID:日期:2026-08-06Courtship 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 . Specifically, we tested how 2 components of the multimodal courtshipa 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 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.
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10. Seasonal variation in trans-oceanic flight and island use in a migratory falcon.
PMID:日期:2026-08-03Wind 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 () 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.