Behavioral Ecology最新文献_第8页

Effects of past mating behavior versus past ejaculation on male mate choice and male attractiveness 过去的交配行为与过去的射精行为对雄性交配选择和雄性吸引力的影响

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2024-01-17 DOI: 10.1093/beheco/arae002

Meng-Han Joseph Chung, Megan L Head, Rebecca J Fox, Michael D Jennions

{"title":"Effects of past mating behavior versus past ejaculation on male mate choice and male attractiveness","authors":"Meng-Han Joseph Chung, Megan L Head, Rebecca J Fox, Michael D Jennions","doi":"10.1093/beheco/arae002","DOIUrl":"https://doi.org/10.1093/beheco/arae002","url":null,"abstract":"Past reproductive effort allows males to assess their ability to acquire mates, but it also consumes resources that can reduce their future competitive ability. Few studies have examined how a male’s reproductive history affects his subsequent mate choice; and, to date, no study has determined the relative contribution of past mating behavior and past ejaculate production because these two forms of investment are naturally highly correlated. Here, we disentangled the relative effects of past mating behavior and past ejaculate production in mosquitofish (Gambusia holbrooki) by experimentally preventing some males from ejaculating when trying to mate. We assessed the effect of mating behavior on mate choice by comparing males that had previously been with or without access to females and male rivals for 8 and 16 weeks; and assessed the effect of ejaculation on mate choice by comparing males that either could or could not ejaculate when they had access to females for 16 weeks. Reproductive treatment did not affect male attractiveness, but it did affect male mate choice. Somewhat surprisingly, in 5 of the 6 treatment-age at testing combinations, males preferred a female in the vicinity of a male rival over a solitary female. This preference was marginally stronger for males that had previously engaged in mating behavior but was unaffected by past ejaculate production. We discuss the potential benefits to males of associating with another male when seeking mates. This is the first study to quantify the relative influence of pre- and post-copulatory reproductive investment on male mate choice.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"7 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low sex drive and choosy females: Fungal infections are a reproductive downfall for male house flies 性欲低下，雌蝇挑三拣四真菌感染是雄性家蝇的生殖障碍

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2024-01-17 DOI: 10.1093/beheco/arae004

Sam Edwards, Eleanor Bath, Henrik H De Fine Licht

{"title":"Low sex drive and choosy females: Fungal infections are a reproductive downfall for male house flies","authors":"Sam Edwards, Eleanor Bath, Henrik H De Fine Licht","doi":"10.1093/beheco/arae004","DOIUrl":"https://doi.org/10.1093/beheco/arae004","url":null,"abstract":"Many entomopathogenic fungi cause infections that kill their insect host. Little is understood about changes in the reproductive investment that occur during an infection by a lethal disease over the waning life of an insect. Life history theory suggests the host will respond by investing resources into fighting the disease or increasing reproduction. Here, we investigate how the reproductive life of adult house flies, Musca domestica, is impacted by its host-specific fungal pathogen, Entomophthora muscae. Specifically, we test how the week-long infection alters the mating behavior of virgin adult male house flies. We find that the pathogen significantly decreases male libido; an effect which grows stronger over the course of the infection. Furthermore, females were significantly less likely to choose an infected male, reducing male mating success. Additionally, we assessed sperm viability to understand the reproductive costs for monandrous females to mate with infected males. Analyses revealed that sperm quality decreases as early as three days post-infection. These results show that E. muscae, which can have a prevalence near 100% in wild populations, causes severe lifetime reproductive costs to male house flies. Understanding how host-pathogen interactions affect host life history is crucial for elucidating all the negative effects pathogen virulence exerts on hosts.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"192 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lunar synchrony, geography, and individual clocks shape autumn migration timing in an avian migrant 月相同步、地理位置和个体时钟决定了鸟类迁徙者的秋季迁徙时间

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2024-01-17 DOI: 10.1093/beheco/arae001

Alicia M Korpach, Christina M Davy, Alex M Mills, Kevin C Fraser

{"title":"Lunar synchrony, geography, and individual clocks shape autumn migration timing in an avian migrant","authors":"Alicia M Korpach, Christina M Davy, Alex M Mills, Kevin C Fraser","doi":"10.1093/beheco/arae001","DOIUrl":"https://doi.org/10.1093/beheco/arae001","url":null,"abstract":"Timing programs in animal migrants have been selected to synchronize movements that coincide with predictable resources on the breeding and nonbreeding grounds. Migrants face potential temporal conflicts if their migration schedules benefit from synchrony to conflicting rhythms associated with annual biogeographical (circannual) cues, lunar (circalunar) cues, or individually-repeatable internal clocks. We repeat-tracked individuals of an avian lunaphilic species, Eastern Whip-poor-will (Antrostomus vociferus), for 2–3 successive autumn migrations to determine the influence of the lunar cycle, breeding location, and individual repeatability on migration timing. Almost all birds avoided departing for migration during a full moon, likely to take advantage of the bright moonlight to facilitate visual foraging and enhance pre-migration fattening. However, groups from two latitudinally-distant sampling areas adjusted their autumn departure timing differently relative to the timing of the September full moon, presumably due to differences in seasonal prey availability. Individual repeatability increased throughout autumn migration, suggesting that the factors responsible for shaping migration timing may differ for different migration stages. Our results, that lunar synchrony, local climate, and individual internal clocks appeared to account for much of the variation in migration timing in whip-poor-wills, underscore the value of measuring potentially interacting factors that shape migratory behavior at species, group, and individual levels. It remains unclear if, or how, maintaining individually-repeatable annual migration schedules provides an adaptive benefit for whip-poor-wills or other lunaphilic migrants. Further clarifying the reasons for phenotypic variation in whip-poor-will migration timing will improve predictions of their abilities to adjust migratory movements under changing environmental conditions.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"18 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139496580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wild bumblebees use both absolute and relative evaluation when foraging 野生熊蜂在觅食时使用绝对评价和相对评价两种方法

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2024-01-05 DOI: 10.1093/beheco/arad112

Claire T Hemingway, Smruti Pimplikar, Felicity Muth

{"title":"Wild bumblebees use both absolute and relative evaluation when foraging","authors":"Claire T Hemingway, Smruti Pimplikar, Felicity Muth","doi":"10.1093/beheco/arad112","DOIUrl":"https://doi.org/10.1093/beheco/arad112","url":null,"abstract":"Foraging theory assumes that animals assess value based on objective payoffs; however, animals often evaluate rewards comparatively, forming expectations based on recent experience. This form of evaluation may be particularly relevant for nectar foragers such as bumblebees, where individuals can visit thousands of flowers daily that vary in nectar quality. While many animals, including bees, demonstrate reference-based evaluation in experimental contexts, it is unclear whether this occurs in the wild. Here, we asked how daily experience with wildflower nectar influenced wild bumblebees’ reward evaluation. We measured the daily nectar concentration of bee-visited wildflowers (Penstemon spp.), before presenting foragers with conspecific flowers filled with a range of artificial nectar concentrations. We recorded bees’ acceptance of artificial nectar, the probability of subsequent visits to flowers on the same plant, and residence time. While bees had a minimum threshold of nectar acceptability that was unaffected by experience, when there was higher-concentration environmental nectar, they were less likely to accept lower-quality rewards on manipulated plants. Bees also visited more flowers and stayed longer on plants with higher-concentration nectar. This study shows evidence for both absolute and reference-based evaluation in wild bees and points towards differences between bees’ behavior in lab- and wild-foraging contexts.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"77 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139375242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature variability is associated with the occurrence of extrapair paternity in blue tits 温度变化与蓝山雀出现配对外父子关系有关

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2024-01-02 DOI: 10.1093/beheco/arad106

Aneta Arct, Rafał Martyka, Szymon M Drobniak, Lars Gustafsson, Mariusz Cichoń

引用次数: 0

Intrinsic and extrinsic factors modulating vigilance and foraging in two gregarious foragers 调节两种群居觅食者警惕性和觅食的内在和外在因素

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2024-01-02 DOI: 10.1093/beheco/arad114

Flavio Monti, Francesco Ferretti, Niccolò Fattorini

{"title":"Intrinsic and extrinsic factors modulating vigilance and foraging in two gregarious foragers","authors":"Flavio Monti, Francesco Ferretti, Niccolò Fattorini","doi":"10.1093/beheco/arad114","DOIUrl":"https://doi.org/10.1093/beheco/arad114","url":null,"abstract":"A continuous balance between costs and benefits dictates individual vigilance and foraging dynamics. In group-living animals, understanding the resulting trade-off is often complicated by multiple confounding effects. Vigilance and foraging levels may be the result of intrinsic (e.g., body size, trophic ecology, migratory phenology) and extrinsic (e.g., flock size, edge effect, group dynamism) factors, potentially differing between species, individuals, and contexts. We explored this idea by investigating intrinsic and extrinsic factors influencing vigilance and foraging behavior of two sympatric gregarious bird species that differ markedly in body size and foraging strategies (Greylag Goose Anser anser and Common Crane Grus grus), during their non-breeding period. Interspecific differences were detected in activity allocation and in response to group-related variables. For both species, time spent in vigilance decreased with increasing flock size and with increasing distance from the edge of the group. While cranes allocated the resulting time to foraging, the same did not occur in geese. Changes in individual position in the group (i.e., peripheral vs. central or vice versa) elicited a prompt behavioral change (i.e., vigilance vs. foraging or other activity). Temporal changes in activity budgets were reported for geese but not for cranes, with a decrease of vigilance and an increase of foraging as winter progressed. Results allowed to disentangle the role of multifactorial determinants of vigilance and foraging, in turn increasing our understanding of underlying forces driving the evolution of behavioral traits and of group-living.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"127 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139084452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Condition-transfer maternal effects modulate inter-locus sexual conflict 条件转移母体效应调节病灶间性冲突

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2024-01-02 DOI: 10.1093/beheco/arad108

Roberto García-Roa, Gonçalo S Faria, Daniel W A Noble, Pau Carazo

{"title":"Condition-transfer maternal effects modulate inter-locus sexual conflict","authors":"Roberto García-Roa, Gonçalo S Faria, Daniel W A Noble, Pau Carazo","doi":"10.1093/beheco/arad108","DOIUrl":"https://doi.org/10.1093/beheco/arad108","url":null,"abstract":"Strong sexual selection frequently favors males that increase their reproductive success by harming females, with potentially negative consequences for natural populations. Understanding what factors modulate conflict between the sexes is hence critical to understand both the evolution of male and female phenotypes and the viability of populations in the wild. Here, we model the evolution of male harm while incorporating male-induced maternal effects on offspring quality. We show that because male harm can induce condition-transfer maternal effects that reduce the quality of a harming male’s own offspring, maternal effects can partially align male and female evolutionary interests and significantly curb the evolution of male harm. These effects are independent of relatedness, the scale of competition, mating system, and whether male harm comes before (i.e., harassment) and/or during/after (i.e., traumatic inseminations or toxic ejaculates) mating and are particularly salient when maternal effects influence offspring ability to inflict (sons) or resist (daughters) harm. Our results underscore the potential importance of considering maternal effects to unravel the evolution of sexual conflict.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"8 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139084558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sex ratio affects sexual selection against mutant alleles in a locus-specific way. 性别比例以特定位点的方式影响针对突变等位基因的性选择。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2023-12-29 eCollection Date: 2024-01-01 DOI: 10.1093/beheco/arad110

Sakshi Sharda, Brian Hollis, Tadeusz J Kawecki

{"title":"Sex ratio affects sexual selection against mutant alleles in a locus-specific way.","authors":"Sakshi Sharda, Brian Hollis, Tadeusz J Kawecki","doi":"10.1093/beheco/arad110","DOIUrl":"10.1093/beheco/arad110","url":null,"abstract":"Higher male:female operational sex ratio (OSR) is often assumed to lead to stronger sexual selection on males. Yet, this premise has been directly tested by very few studies, with mixed outcomes. We investigated how OSR affects the strength of sexual selection against two deleterious alleles, a natural ebony mutant and a transgenic GFP insertion, in Drosophila melanogaster. To this end, we estimated the relative paternity share of homozygous mutant males competing against wild-type males under different OSRs (1:2, 1:1, 2:1). We also manipulated the mating pool density (18, 36, or 54 individuals) and assessed paternity over three consecutive days, during which the nature of sexual interaction changed. The strength of sexual selection against the ebony mutant increased with OSR, became weaker after the first day, and was little affected by density. In contrast, sexual selection against the GFP transgene was markedly affected by density: at the highest density, it increased with OSR, but at lower densities, it was strongest at 1:1 OSR, remaining strong throughout the experiment. Thus, while OSR can strongly affect the strength of sexual selection against \"bad genes,\" it does not necessarily increase monotonically with male:female OSR. Furthermore, the pattern of relationship between OSR and the strength of sexual selection can be locus-specific, likely reflecting the specific phenotypic effects of the mutation.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"35 1","pages":"arad110"},"PeriodicalIF":2.5,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10756055/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139072549","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

Flexible learning in complex worlds. 复杂世界中的灵活学习。

IF 2.5 3区环境科学与生态学

Behavioral Ecology Pub Date : 2023-12-29 eCollection Date: 2024-01-01 DOI: 10.1093/beheco/arad109

Olof Leimar, Andrés E Quiñones, Redouan Bshary

{"title":"Flexible learning in complex worlds.","authors":"Olof Leimar, Andrés E Quiñones, Redouan Bshary","doi":"10.1093/beheco/arad109","DOIUrl":"10.1093/beheco/arad109","url":null,"abstract":"Cognitive flexibility can enhance the ability to adjust to changing environments. Here, we use learning simulations to investigate the possible advantages of flexible learning in volatile (changing) environments. We compare two established learning mechanisms, one with constant learning rates and one with rates that adjust to volatility. We study an ecologically relevant case of volatility, based on observations of developing cleaner fish Labroides dimidiatus that experience a transition from a simpler to a more complex foraging environment. There are other similar transitions in nature, such as migrating to a new and different habitat. We also examine two traditional approaches to volatile environments in experimental psychology and behavioral ecology: reversal learning, and learning set formation (consisting of a sequence of different discrimination tasks). These provide experimental measures of cognitive flexibility. Concerning transitions to a complex world, we show that both constant and flexible learning rates perform well, losing only a small proportion of available rewards in the period after a transition, but flexible rates perform better than constant rates. For reversal learning, flexible rates improve the performance with each successive reversal because of increasing learning rates, but this does not happen for constant rates. For learning set formation, we find no improvement in performance with successive shifts to new stimuli to discriminate for either flexible or constant learning rates. Flexible learning rates might thus explain increasing performance in reversal learning but not in learning set formation, and this can shed light on the nature of cognitive flexibility in a given system.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"35 1","pages":"arad109"},"PeriodicalIF":2.5,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10756056/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139073336","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

Exploration and social environment affect inbreeding avoidance in a small mammal 探索和社会环境影响一种小型哺乳动物避免近亲繁殖的能力

IF 2.4 3区环境科学与生态学

Behavioral Ecology Pub Date : 2023-12-26 DOI: 10.1093/beheco/arad107

Katherine Vandal, Dany Garant, Patrick Bergeron, Denis Réale

{"title":"Exploration and social environment affect inbreeding avoidance in a small mammal","authors":"Katherine Vandal, Dany Garant, Patrick Bergeron, Denis Réale","doi":"10.1093/beheco/arad107","DOIUrl":"https://doi.org/10.1093/beheco/arad107","url":null,"abstract":"Individual exploration types are based on the cognitive speed-accuracy trade-off, which suggests that a higher speed of information acquisition is done by sacrificing information quality. In a mating context, fast exploration could thus increase the probability of finding mates at the cost of mating with kin or suboptimal partners. We tested this hypothesis by studying male mate choice patterns in a species with a scramble competition mating system. We used genotyping, localization by radio-collar, trapping, and repeated exploration measures from a long-term study on wild Eastern chipmunks (Tamias striatus). We predicted that, according to the speed-accuracy trade-off hypothesis, slower-thorough explorers should be choosier than faster-superficial ones, and thus avoid inbreeding. We found that slower males reproduced more often with less related females, but only on one site where variance in relatedness and female density were high. Males showed no preference for their mates’ exploration type. Our results suggest that superficial exploration decreases male choosiness and increases the risk of inbreeding, but only under decreased mate search costs due to high variance in relatedness among mates (at high density). Our findings reveal exploration-related, among-individual variance in inbreeding, highlighting the complexity of mate choice, and showing that many aspects of an individual’s life contribute to animal decision-making.","PeriodicalId":8840,"journal":{"name":"Behavioral Ecology","volume":"6 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139056891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0