Behavioural Processes最新文献_第2页

The front legs of Sepsis flies (Diptera: Sepsidae) are stimulation devices 脓毒蝇（双翅目：脓毒蝇科）的前腿是刺激装置。

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-03-01 Epub Date: 2026-01-07 DOI: 10.1016/j.beproc.2025.105325

Amir Tarizadeh, Marjan Seiedy

{"title":"The front legs of Sepsis flies (Diptera: Sepsidae) are stimulation devices","authors":"Amir Tarizadeh, Marjan Seiedy","doi":"10.1016/j.beproc.2025.105325","DOIUrl":"10.1016/j.beproc.2025.105325","url":null,"abstract":"<div><div>Male genital and non-genital structures that are specialized to contact the female during copulation have diverged rapidly in many animal taxa. Three hypotheses that provide different explanations for this trend are reproductive isolation, sexual conflict, and female choice. We tested these hypotheses in sepsid flies, which have been considered case studies of sexual conflict, as males grasp and hold the females’ wings with their species-specific front legs before and during mating, and females seem to actively resist this hold. The reproductive isolation and the sexual conflict hypotheses predict that the species-specific modifications of the male’s front legs function as devices to mechanically improve their hold on the female’s wings. The female choice hypothesis predicts that the male front legs function as stimulatory courtship devices. We tested these predictions by observing mating interactions, morphological contact, and the distribution of female sense organs in two species, <em>Sepsis barbata</em> and <em>S. thoracica</em>. Male front legs performed rhythmic, stereotypic, and species-specific movements, providing tactile stimulation of zones of the female wing that contained numerous sense organs but not improving their mechanical grip. We conclude that male front legs are stimulation devices rather than species-specific mechanical clamps, supporting the female choice hypothesis.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"236 ","pages":"Article 105325"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145942432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Motor deficits in the McGill-R-Thy1-APP transgenic rat model of Alzheimer’s disease McGill-R-Thy1-APP转基因阿尔茨海默病大鼠模型的运动缺陷

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-03-01 Epub Date: 2026-01-17 DOI: 10.1016/j.beproc.2026.105341

Kyle M. Roddick , Paige A. Northrup , Heather M. Schellinck , Richard E. Brown

{"title":"Motor deficits in the McGill-R-Thy1-APP transgenic rat model of Alzheimer’s disease","authors":"Kyle M. Roddick , Paige A. Northrup , Heather M. Schellinck , Richard E. Brown","doi":"10.1016/j.beproc.2026.105341","DOIUrl":"10.1016/j.beproc.2026.105341","url":null,"abstract":"<div><div>The McGill-R-Thy1-APP rat is a transgenic model of Alzheimer’s disease (AD) which expresses APP with two mutations found in cases of familial AD, resulting in the development of amyloid pathology and cognitive deficits. Motor deficits are common symptoms of AD, emerging early in the disease, and are correlated with AD neuropathology and cognitive symptoms. This study evaluated hemizygous and homozygous McGill-R-Thy1-APP rats and their wildtype littermates for spontaneous alternation and locomotion in the T and Y mazes, and motor behaviour on an accelerating rotarod at 12–13 months of age. We found no genotype or sex effects in spontaneous alternation in either maze, nor a significant correlation of spontaneous alternation behaviour between the mazes. Female rats travelled greater distances than male rats in both mazes. While there was no genotype effect in the T maze on distance travelled, in the Y maze the hemizygous rats travelled shorter distances than the wildtype rats, while the homozygous rats travelled greater distances. There was a significant correlation between the distances travelled in each maze. Both hemizygous and homozygous rats performed worse than their wildtype littermates on the rotarod, while heavier rats performed worse than lighter rats, and female rats performed worse than male rats once their differences in weights were accounted for. These findings support the continued use of these rats as a model of AD and highlight the need to consider the possible confounding effect motor impairments have on other behavioural tests.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"236 ","pages":"Article 105341"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146002993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Social hierarchy determination in rams: A comparison of different methods 公羊社会等级的确定：不同方法的比较。

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2026-01-05 DOI: 10.1016/j.beproc.2026.105329

L. Lacuesta, R. Ungerfeld

{"title":"Social hierarchy determination in rams: A comparison of different methods","authors":"L. Lacuesta, R. Ungerfeld","doi":"10.1016/j.beproc.2026.105329","DOIUrl":"10.1016/j.beproc.2026.105329","url":null,"abstract":"<div><div>The objectives were to determine whether, in a group of adult rams: 1) the dominance index (DI) differs when calculated using absolute vs relative values using different approaches (competition for food (F), estrous females (EF) or recording of spontaneous agonistic interaction (AI)), 2) there is a consistent relationship between DI values calculated using absolute values when rams compete for F, for an EF or display spontaneous AI, and 3) there is concordance between individual hierarchical positions calculated from results of F, EF competition tests, or spontaneous AI. Twelve rams were used, and the DI was calculated using three methods: competition for food, competition for an estrous female, and spontaneous AI, in all cases assigning absolute or relative values. There was a positive correlation between the individual DI values calculated from absolute and relative measures using the food competition test, estrous female, or spontaneous AI. There was no correlation between the individual DI values obtained from the F and the EF competition tests, or from spontaneous AI. There was a positive concordance between individual hierarchical positions calculated from the F and EF competitions and those obtained using spontaneous AI. Although different methods provided differences on individual DI, the assigned value did not successfully predict the hierarchical position.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"235 ","pages":"Article 105329"},"PeriodicalIF":1.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145916907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

I call dibs on it! Chemical cues of intraspecific competitors potentiate food consumption in anuran tadpoles 我说了算！种内竞争者的化学线索增强了无尾蝌蚪的食物消耗

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2025-12-30 DOI: 10.1016/j.beproc.2025.105326

Francisco Javier Zamora-Camacho

{"title":"I call dibs on it! Chemical cues of intraspecific competitors potentiate food consumption in anuran tadpoles","authors":"Francisco Javier Zamora-Camacho","doi":"10.1016/j.beproc.2025.105326","DOIUrl":"10.1016/j.beproc.2025.105326","url":null,"abstract":"<div><div>Animals are expected to adjust their decisions to different contexts so that their benefits outweigh the costs. For instance, the proximity of predators frequently leads to cautious behaviors, whereas competitors promote boldness. Foraging can be affected by these patterns, although to an extent that may depend on the individual’s need for food. In this work, I investigate the effect of chemical cues of non-gape-limited predators and intraspecific competitors on foraging rates of Iberian spadefoot toad (<em>Pelobates cultripes</em>) tadpoles either fed <em>ad libitum</em> or fasted for 24 h. Food restriction did not affect foraging rates, and neither did predator cues. These are large tadpoles that could have enough reserves to survive a 24-hour fast, and be difficult to handle by most predators. However, tadpoles ate more in the presence of competitor cues. Hoarding food under dispute could maximize its consumption before the competitor reduces the amount of it available, also limiting the access of the competitor to it, probably limiting its growth and its ability to compete in future encounters.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"235 ","pages":"Article 105326"},"PeriodicalIF":1.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sex differences in locomotor recovery across mating contexts in Drosophila melanogaster 不同交配环境下黑腹果蝇运动恢复的性别差异。

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2025-12-29 DOI: 10.1016/j.beproc.2025.105324

Rui Han , Jun Zhang , Xin-Hui Chen , Jing-Wen Duo , Yi-Yi Li , Yi-Ran Chen , Si-Tong Chen , Lin-Xiang Liu , Xiang-Haoran Lin

{"title":"Sex differences in locomotor recovery across mating contexts in Drosophila melanogaster","authors":"Rui Han , Jun Zhang , Xin-Hui Chen , Jing-Wen Duo , Yi-Yi Li , Yi-Ran Chen , Si-Tong Chen , Lin-Xiang Liu , Xiang-Haoran Lin","doi":"10.1016/j.beproc.2025.105324","DOIUrl":"10.1016/j.beproc.2025.105324","url":null,"abstract":"<div><div>Mating behaviour plays a key role in animal reproduction and profoundly affects the physiological state and behavioural performance of individuals. Although numerous studies have focused on the behavioural responses of single-sex groups of <em>Drosophila melanogaster</em> under mating contexts, systematic comparisons of male and female fruit flies across different mating contexts are still relatively limited. This study investigated the locomotion of 86 male and female fruit flies under different mating contexts, including virgin, continuously exposed to the opposite sex (mated), beginning cohabitation with the opposite sex on the 8th day of the experiment (virgin-mated), and opposite-sex cohabitation on the 8th day and switching to same-sex cohabitation (mated-deprived). The results showed that virgin males exhibited the highest overall movement speed and that continuous exposure to the opposite sex led to a transient reduction in male movement speed. In contrast, females displayed a temporary increase in movement speed under opposite-sex cohabitation but rapidly returned to levels comparable to virgins. These sex-specific and time-dependent changes indicate that mating context exerts dynamic effects on movement speed. Moreover, in contrast to the negative effects of social isolation reported in previous studies, our findings suggest that mating status and social environment jointly shape locomotor performance under non-isolated conditions. Overall, this study highlights how males and females dynamically adjust locomotor strategies in response to changing reproductive and social contexts, providing an evolutionary perspective on behavioural plasticity and sex-specific trade-offs in insects.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"235 ","pages":"Article 105324"},"PeriodicalIF":1.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145877629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observing responses maintained by re-presentations of S- 观察S-再现维持的反应

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2026-01-02 DOI: 10.1016/j.beproc.2026.105327

Gerson Yukio Tomanari

{"title":"Observing responses maintained by re-presentations of S-","authors":"Gerson Yukio Tomanari","doi":"10.1016/j.beproc.2026.105327","DOIUrl":"10.1016/j.beproc.2026.105327","url":null,"abstract":"<div><div>Food-deprived pigeons were given a random sequence of 50-s discrete trials, half of which ended with and half without response-independent food presentation. During a trial, pecking a white key could change its color to red or green, depending on whether food (S+ color) or no food (S- color) was scheduled. In the single stimulus-production condition (SSP), if the red or the green key color was produced, the key remained red or green, respectively, until the end of the trial. In the multiple stimulus-production condition (MSP), the duration of each green or red illumination was limited to a maximum of 10 s. After 10 s, the white light resumed and additional key-color changes (re-presentations of S+ or S-) were possible. Results showed that S+ and S- were produced equally often in SSP, as well as in the first stimulus production in MSP. The frequencies of S- re-presentations, however, were clearly and systematically higher than the frequencies of S+ re-presentations. These findings demonstrate that under certain conditions, a stimulus signaling the absence of primary reinforcement (S-) can maintain higher rates of observing behavior than a stimulus signaling its presence (S+).</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"235 ","pages":"Article 105327"},"PeriodicalIF":1.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using a timeout-from-avoidance procedure to explore resurgence of negatively reinforced behavior with rats 利用回避暂停程序探索大鼠负强化行为的重现。

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2026-01-05 DOI: 10.1016/j.beproc.2026.105330

Julian C. Velasquez , Carlos J. Flores

引用次数: 0

Adaptive variation in the acoustic sensitivity of California ground squirrels (Otospermophilus beecheyi) living in higher- and lower-elevation habitats 生活在高海拔和低海拔栖息地的加利福尼亚地松鼠（otospermoophilus beecheyi）声敏感性的适应性变化。

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2025-12-23 DOI: 10.1016/j.beproc.2025.105323

Chris T. Tromborg, Richard G. Coss, Kenneth R. Henry

{"title":"Adaptive variation in the acoustic sensitivity of California ground squirrels (Otospermophilus beecheyi) living in higher- and lower-elevation habitats","authors":"Chris T. Tromborg, Richard G. Coss, Kenneth R. Henry","doi":"10.1016/j.beproc.2025.105323","DOIUrl":"10.1016/j.beproc.2025.105323","url":null,"abstract":"<div><div>California ground squirrels (<em>Otospermophilus becheeyi</em>) exhibit adaptive variation to their local environments based on antipredator, immunological, and social-communication evaluations. The following pair of experiments investigated the acoustic and behavioral responses of California ground squirrels from the higher-elevation Sierra Valley (alt. ∼1900 m) and from the lower-elevation Sunol region (alt. ∼270 m). Analyses of their genetic distance suggest that these populations diverged during the Late Pleistocene. The first experiment compared small groups from these populations on the basis of their auditory brainstem responses (ABR) to a range of sound frequencies. The ABR audiograms of Sierra Valley squirrels showed greater acoustic sensitivity to frequencies lower than 4 kHz than the Sunol squirrels. Both groups exhibited similar audiograms for higher frequencies. Such an adaptation would be useful for coping with dangerous circumstances possibly masked by inclement weather. The second experiment compared the squirrel groups for several 9-hr observation periods focusing on the number of egress bouts from nest boxes centered in a laboratory room equipped with sound playback equipment to simulate far-field naturalistic sounds. Three sound treatments were compared: 1) ambient room sound, 2) temperate forest, and 3) rainstorm. Analyses indicated that the higher-altitude Sierra Valley squirrels were reliably less likely to leave the nestbox to explore the room than were low-altitude Sunol squirrels under the rain treatment. The results of both studies suggest that the enhanced low-frequency hearing of Sierra Valley squirrels is a sensory adaptation for coping with the reduced sound transmission of low frequencies at higher altitudes.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"235 ","pages":"Article 105323"},"PeriodicalIF":1.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145833061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diurnal patterns of movement and feeding for an unfished population of Actinopyga echinites (Jaeger, 1833) in a protected marine sanctuary on Ningaloo Reef, northwestern Australia 在澳大利亚西北部宁格鲁礁的一个受保护的海洋保护区里，一个未被捕捞的放光藻种群的运动和摄食的日模式（Jaeger, 1833）

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2026-01-06 DOI: 10.1016/j.beproc.2026.105333

Cindy Bessey , Nick Mortimer , Ellie Slatter , Zoe Slatter , Logan Hellmrich , John K. Keesing

{"title":"Diurnal patterns of movement and feeding for an unfished population of Actinopyga echinites (Jaeger, 1833) in a protected marine sanctuary on Ningaloo Reef, northwestern Australia","authors":"Cindy Bessey , Nick Mortimer , Ellie Slatter , Zoe Slatter , Logan Hellmrich , John K. Keesing","doi":"10.1016/j.beproc.2026.105333","DOIUrl":"10.1016/j.beproc.2026.105333","url":null,"abstract":"<div><div>Sea cucumbers are large conspicuous invertebrates that play an important functional role in coral reef ecosystems through bioturbation and organic load recycling making their abundance and movement patterns key features to understanding impacts on the benthos. This study examines the diel movement patterns of an unfished population of the commercially important sea cucumber, the deep-water redfish (<em>Actinopyga echinites</em>), within a fully protected marine sanctuary on the Ningaloo Reef, Western Australia. Movement rates were measured using long-run underwater stereo-video, while density was measured using belt transects. The size of <em>A. echinites</em> was also investigated. We observed abundances of <em>A. echinites</em> (1.58 individuals / m<sup>2</sup>) that far exceeded those from areas with fishing pressures. The majority <em>of A. echinites</em> were in the 150–175 mm size range, with no individuals less than 100 mm recorded. We quantified the movement patterns of 92 individual sea cucumbers which correlated with light intensity throughout a 24-hour period, where maximum mean movement rates occurred at 1:00 pm (75.7 cm / hour) before slowly decreasing with reduced light intensity. <em>Actinopyga echinites</em> specimens were primarily stationary between midnight and 7 am and were stationary and non-feeding approximately 22 % of the time. Most of the time (68 %) <em>A. echinites</em> were classified as non-stationary and feeding and significantly more active during the day. We discuss the abundance and size of <em>A. echinites</em> in relation to studies from other areas and relate their diurnal movement patterns to diel foraging theory.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"235 ","pages":"Article 105333"},"PeriodicalIF":1.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cognition in captivity: Investigating learning, anxiety, and brain mass differences between captive and wild fathead minnow 圈养中的认知：研究圈养和野生胖头鲦鱼之间的学习、焦虑和脑质量差异。

IF 1.5 4区生物学

Behavioural Processes Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.beproc.2025.105322

Megan Dorothy Cyr , Jacqueline Bikker , Adrienne Yau , Sigal Balshine

{"title":"Cognition in captivity: Investigating learning, anxiety, and brain mass differences between captive and wild fathead minnow","authors":"Megan Dorothy Cyr , Jacqueline Bikker , Adrienne Yau , Sigal Balshine","doi":"10.1016/j.beproc.2025.105322","DOIUrl":"10.1016/j.beproc.2025.105322","url":null,"abstract":"<div><div>Captive animals are commonly used in laboratory research, however, captive and wild animals often differ, limiting the applicability of laboratory findings based on captive animals to the “real” world. A comprehensive understanding of how captive and wild animals differ is necessary to assess if captive animals are suitable substitutes for their wild counterparts, however, few studies have compared cognition between captive and wild animals. In this study, we compared aspects of cognition between captive and wild fathead minnow (<em>Pimephales promelas)</em> to investigate how life in captivity might impact traits essential to fitness in the wild. Specifically, we assessed aversive learning performance using an associative learning assay and a more complex reversal learning assay, and we also measured anxiety and brain mass. Performance in the associative learning task was negatively correlated with performance in the reversal learning task, suggesting a potential tradeoff. No differences were observed between captive and wild fish in associative learning performance, anxiety, or brain mass, but wild fish were three times more likely to complete the more complex reversal learning task. Aversive reversal learning, which appears to be dampened in captive fathead minnow, may be particularly relevant for appropriate antipredator responses and fitness in challenging or fluctuating environments. We advocate for further research comparing wild and captive animal cognition and urge researchers to exercise caution when generalizing results from captive animals to wild populations.</div></div>","PeriodicalId":8746,"journal":{"name":"Behavioural Processes","volume":"235 ","pages":"Article 105322"},"PeriodicalIF":1.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145761982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0