Current Zoology最新文献_第5页

Spatial, social and environmental factors influencing natal dispersal in the colonial griffon vulture 影响殖民地狮鹫产仔扩散的空间、社会和环境因素

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-07-03 DOI: 10.1093/cz/zoae037

Félix Martínez, Martina Carrete, Guillermo Blanco

{"title":"Spatial, social and environmental factors influencing natal dispersal in the colonial griffon vulture","authors":"Félix Martínez, Martina Carrete, Guillermo Blanco","doi":"10.1093/cz/zoae037","DOIUrl":"https://doi.org/10.1093/cz/zoae037","url":null,"abstract":"Natal dispersal is a critical trait for individual fitness and the viability, structure and genetic identity of populations. However, there is a pronounced information gap for large and long-lived species due to the difficulty of monitoring individuals at appropriate spatio-temporal scales. Here we study how individual traits and social and environmental characteristics influence natal dispersal decisions of griffon vultures (Gyps fulvus) using long-term (30 years) monitoring of a large number of individuals marked as nestlings in Spain. Our results show a strong philopatry in both sexes, with some individuals recruiting as breeders on the same cliffs, and even the same nests, where they were born. This philopatric tendency was modulated by the effect of conspecific density on individual parameters, and emphasize the importance of conspecific attraction and changes in food availability that may have influenced the increment in colony size and the colonization of new areas. Although further research is needed considering smaller colonies and more isolated population nuclei, our results highlight the importance of long-term studies on long-lived species to understand the factors that determine their population dynamics and their relationship with anthropogenic activities, whose effects should be predicted and managed using conservation criteria.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"10 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Sexually differentiated decision-making involves faster recruitment in the early stages for the Tibetan antelopes Pantholops hodgsonii 藏羚羊的性别差异决策涉及早期阶段更快的新兵招募

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-06-25 DOI: 10.1093/cz/zoae036

Qin Zhu, Jian Guan, Tianya Lei, Xuan Kun, Sile Guo, Yumeng Zhao, Changjian Fu, Le Yang, Zhongqiu Li

{"title":"Sexually differentiated decision-making involves faster recruitment in the early stages for the Tibetan antelopes Pantholops hodgsonii","authors":"Qin Zhu, Jian Guan, Tianya Lei, Xuan Kun, Sile Guo, Yumeng Zhao, Changjian Fu, Le Yang, Zhongqiu Li","doi":"10.1093/cz/zoae036","DOIUrl":"https://doi.org/10.1093/cz/zoae036","url":null,"abstract":"Group-living is widespread across diverse taxa, the mechanisms underlying collective decision-making in contexts of variable role division are critical for understanding the dynamics of group stability. While studies on collective behaviour in small animals such as fish and insects are well-established, similar research on large wild animals remains challenging due to the limited availability of sufficient and systematic field data. Here, we aimed to explore the collective decision-making pattern and its sexual difference for the dimorphic Tibetan antelopes Pantholops hodgsonii (chiru) in Xizang Autonomous Region, China, by analysing individual leadership distribution, as well as the joining process, considering factors such as calving stages and joining ranks. The distinct correlations of decision participants’ ratio with group size and decision duration underscore the trade-off between accuracy and speed in decision-making. Male antelopes display a more democratic decision-making pattern, while females exhibit more prompt responses after calving at early stage. This study uncovers a partially shared decision-making strategy among Tibetan antelopes, suggesting flexible self-organization in group decision processes aligned with animal life cycle progression.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"15 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Developmental instability, body mass, and reproduction predict immunological response in short-tailed bats 发育不稳定、体重和繁殖可预测短尾蝠的免疫反应

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-06-22 DOI: 10.1093/cz/zoae034

Breno Mellado, Lucas de O Carneiro, Marcelo R Nogueira, L Gerardo Herrera M, Ariovaldo P Cruz-Neto, Leandro R Monteiro

{"title":"Developmental instability, body mass, and reproduction predict immunological response in short-tailed bats","authors":"Breno Mellado, Lucas de O Carneiro, Marcelo R Nogueira, L Gerardo Herrera M, Ariovaldo P Cruz-Neto, Leandro R Monteiro","doi":"10.1093/cz/zoae034","DOIUrl":"https://doi.org/10.1093/cz/zoae034","url":null,"abstract":"Developmental instability (DI) is a phenomenon whereby organisms are unable to buffer developmental disturbances, resulting in asymmetric variation of paired traits. Previous research has demonstrated a negative relationship between DI, measured as forearm asymmetry, and survival in the bat Carollia perspicillata. This study aims to test the hypothesis that individuals with higher DI exhibit a lower immune response. We measured a delayed-type hypersensitivity to the antigen phytohemagglutinin (PHA) on 74 males and 65 females of C. perspicillata before and after the breeding season. Linear models were used to predict the immunological response based on body mass, forearm asymmetry, sex, breeding season, and testicle length. The best-fitting model accounted for 29% of the variation in immune response and included asymmetry, body mass, sex, and breeding season as predictors. The immune response was negatively associated with asymmetry and testicle length in males, but positively related to asymmetry in females. Both sexes showed a reduced immune response in the late breeding season. Additionally, the association between immune response and body mass changed direction seasonally, with heavier individuals showing weaker responses early in the breeding season and stronger responses later. Individual variation in male immunity was predicted by individual attributes, whereas variation in immune response in females was mostly seasonal. Our results support the link between DI, survival, and immune response in short-tailed bats, and suggest that the immunological component measured by the PHA response may be under finer selection in males due to its stronger correlation with individual traits.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"87 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Claw coloration in the fiddler crab Leptuca uruguayensis has no correlation with male quality 乌拉圭大闸蟹的蟹爪颜色与雄性质量无关

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-06-22 DOI: 10.1093/cz/zoae035

Zackary A Graham, Jônatas de Jesus Florentino, Samuel P Smithers, João C T Menezes, José Eduardo de Carvalho, Alexandre V Palaoro

{"title":"Claw coloration in the fiddler crab Leptuca uruguayensis has no correlation with male quality","authors":"Zackary A Graham, Jônatas de Jesus Florentino, Samuel P Smithers, João C T Menezes, José Eduardo de Carvalho, Alexandre V Palaoro","doi":"10.1093/cz/zoae035","DOIUrl":"https://doi.org/10.1093/cz/zoae035","url":null,"abstract":"Sexual selection is thought to play a major role in the evolution of color due to the correlation between a signaler’s physiological state and the displayed color. As such, researchers often investigate how color correlates to the quality of the signaler, like size or body condition. However, research on the relationship between color and individual quality is often taxonomically limited and researchers typically investigate how color phenotypes relate to one index of quality, such as a linear measure of body size. Here, we investigated the relationship between body size, claw size, claw muscle mass, lipid content, and the color of the claw in male fiddler crabs (Leptuca uruguayensis) which wield an exaggerated claw that varies in color from brown to red. We hypothesized that if color was correlated to one or more indices of male quality, the color displayed on the claws of male L. uruguayensis could be under sexual selection. We found Leptuca uruguayensis claw color varies substantially among the individuals we photographed. However, we did not find a correlation between claw color and indices of quality; neither brightness nor hue correlated to the indices of quality we measured. Our findings suggest that claw color in L. uruguayensis is unlikely to have evolved to signal quality, but may instead function as a species identity or as a non-indicator sexual signal.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"130 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Multiple stressors lead to complex responses in reproductive behaviors in an African cichlid. 多种应激源导致非洲慈鲷生殖行为的复杂反应。

IF 1.6 2区生物学

Current Zoology Pub Date : 2024-06-19 eCollection Date: 2024-12-01 DOI: 10.1093/cz/zoae033

Bethany Williams, Lauren Pintor, Suzanne Gray

{"title":"Multiple stressors lead to complex responses in reproductive behaviors in an African cichlid.","authors":"Bethany Williams, Lauren Pintor, Suzanne Gray","doi":"10.1093/cz/zoae033","DOIUrl":"10.1093/cz/zoae033","url":null,"abstract":"Exposure to multiple environmental stressors is a common occurrence that can affect organisms in predictable or unpredictable ways. Hypoxia and turbidity in aquatic environments are 2 stressors that can affect reproductive behaviors by altering energy availability and the visual environment, respectively. Here we examine the relative effects of population and the rearing environment (oxygen concentration and turbidity) on reproductive behaviors. We reared cichlid fish (the Egyptian mouthbrooder, Pseudocrenilabrus multicolor) from 2 populations (a swamp and river) until sexual maturity, in a full factorial design (hypoxic/normoxic × clear/turbid) and then quantified male competitive and courtship behaviors and female preference under their respective rearing conditions. Overall, we found that the rearing environment was more important than population for determining behavior, indicating there were few heritable differences in reproductive behavior between the 2 populations. Unexpectedly, males in the hypoxic rearing treatment performed more competitive and courtship behaviors. Under turbid conditions, males performed fewer competitive and courtship behaviors. We predicted that females would prefer males from their own population. However, under the hypoxic and turbid combination females from both populations preferred males from the other population. Our results suggest that reproductive behaviors are affected by interactions among male traits, female preferences, and environmental conditions.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"70 6","pages":"821-832"},"PeriodicalIF":1.6,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11634676/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variability of morphology-performance relationships under acute exposure to different temperatures in 3 strains of zebrafish. 3个斑马鱼品系在不同温度下的形态-性能关系的变异性。

IF 1.6 2区生物学

Current Zoology Pub Date : 2024-06-17 eCollection Date: 2025-04-01 DOI: 10.1093/cz/zoae032

Christina L Miller, Robert Dugand, Katrina McGuigan

{"title":"Variability of morphology-performance relationships under acute exposure to different temperatures in 3 strains of zebrafish.","authors":"Christina L Miller, Robert Dugand, Katrina McGuigan","doi":"10.1093/cz/zoae032","DOIUrl":"https://doi.org/10.1093/cz/zoae032","url":null,"abstract":"Locomotion is thermally sensitive in ectotherms and therefore it is typically expressed differently among thermally heterogenous environments. Locomotion is a complex function, and whereas physiological and behavioral traits that influence locomotor performance may respond to thermal variation throughout life, other contributing traits, like body shape, may have more restricted responses. How morphology affects locomotor performance under variable temperature conditions is unknown. Here, we investigated 3 genetically distinct strains of zebrafish, Danio rerio (AB, WIK, and Tu) with a shared multi-generational history at 28 °C. After rearing fish at 28 °C, we measured prolonged swimming speed (U crit) at each of 6 temperatures (between 16 °C and 34 °C). Speed was strongly positively correlated among temperatures, resulting in most among individual variation being temperature-independent (i.e., fish were relatively fast or slow across all temperatures). However, we also detected significant variation along 2 axes reflecting temperature-dependent variation. Although strains differed in mean swimming performance, within strain (among-individual) patterns of speed variation were markedly consistent. Body shape and size explained significant variation among individuals in both temperature-independent and temperature-dependent axes of swimming speed variation. Notably, morphological traits that were most strongly associated with temperature-independent performance variation (i.e., faster-slower) differed from those associated with temperature-dependent (i.e., hotter-colder) variation. Further, there were significant differences among strains in both the direction and strength of association for specific morphological traits. Our results suggest that thermally heterogenous environments could have complex effects on the evolution of traits that contribute to whole organism performance traits.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"71 2","pages":"152-161"},"PeriodicalIF":1.6,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12011485/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144006450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of prey availability on the movement pattern of breeding saker falcons (Falco cherrug) in Mongolia 猎物供应对蒙古萨克猎隼（Falco cherrug）繁殖运动模式的影响

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-05-09 DOI: 10.1093/cz/zoae024

Batbayar Bold, Md Lutfor Rahman, Gankhuyag Purev-Ochir, Amarsaikhan Saruul, Xiangjiang Zhan, Andrew Dixon

{"title":"Influence of prey availability on the movement pattern of breeding saker falcons (Falco cherrug) in Mongolia","authors":"Batbayar Bold, Md Lutfor Rahman, Gankhuyag Purev-Ochir, Amarsaikhan Saruul, Xiangjiang Zhan, Andrew Dixon","doi":"10.1093/cz/zoae024","DOIUrl":"https://doi.org/10.1093/cz/zoae024","url":null,"abstract":"As an apex predator in arid steppe, saker falcon plays a crucial role in maintaining ecosystem balance. Understanding their movement patterns concerning conspecific competition and prey availability is important for their conservation. We aim to understand how movement pattern of breeding saker falcons relates to prey availability. Twelve adult sakers were tracked during the breeding seasons, using satellite transmitters. Throughout the breeding season, sakers exhibited territorial behaviour, with minimal overlap in range use among neighbouring conspecifics. Males occupied larger areas (mean = 2,397 ha, median = 1,221 ha), compared to females (mean = 1,241 ha, median = 554 ha), and it remained consistent throughout breeding season. Female home range size increased notably during late nestling stage and post-fledging dependence periods, indicating release from brooding constraints. Notably, we found a negative relationship between male home range size and prey availability. In high rodent density areas, males occupied smaller areas (mean = 1,135 ha, median = 1,034 ha), contrasting with low rodent density areas (mean = 6,815 ha, median = 6,516 ha). However, no significant relationship was observed between female home range size and prey availability. We also noted instances of nest abandonment and early dispersal behaviour in some females, potentially influenced by a handicapping effect of tagging. Our findings offer valuable insight into how prey availability shapes saker falcon space use and defines their spatial requirements for successful breeding. This knowledge is crucial for the conservation and management of globally endangered saker falcons, informing targeted habitat protection and resource management strategies.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"21 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Urbanization does not affect red foxes’ interest in anthropogenic food, but increases their initial cautiousness 城市化不会影响红狐对人类食物的兴趣，但会提高它们最初的谨慎程度

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-05-08 DOI: 10.1093/cz/zoae023

Martina Lazzaroni, Rudy Brogi, Valentina Napolitano, Marco Apollonio, Friederike Range, Sarah Marshall-Pescini

{"title":"Urbanization does not affect red foxes’ interest in anthropogenic food, but increases their initial cautiousness","authors":"Martina Lazzaroni, Rudy Brogi, Valentina Napolitano, Marco Apollonio, Friederike Range, Sarah Marshall-Pescini","doi":"10.1093/cz/zoae023","DOIUrl":"https://doi.org/10.1093/cz/zoae023","url":null,"abstract":"Human presence and activities have profoundly altered animals' habitats, exposing them to greater risks but also providing new opportunities and resources. The animals’ capacity to effectively navigate and strike a balance between risks and benefits is crucial for their survival in the Anthropocene era. Red foxes (Vulpes vulpes), adept urban dwellers, exhibit behavioral plasticity in human-altered environments. We investigated variations in detection frequency on trail cameras and the behavioral responses (explorative, bold and fearful) of wild red foxes living along an urbanization gradient when exposed to a metal bin initially presented clean and then filled with anthropogenic food. All fox populations displayed an increased interest and similar explorative behavioral responses towards the anthropogenic food source, irrespective of the urbanization gradient. Despite no impact on explorative behaviors, foxes in more urbanized areas initially showed heightened fear towards the empty bin, indicating increased apprehension toward novel objects. However, this fear diminished over time, and in the presence of food, urban foxes displayed slightly reduced fear compared to their less urban counterparts. Our results highlight foxes' potential for adaptability to human landscapes, additionally underscoring the nuanced interplay of fear and explorative behavioral response of populations living along the urbanization gradient.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"53 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140927519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Urbanization does not increase ‘object curiosity’ in vervet monkeys, but semi-urban individuals selectively explore food related anthropogenic items 城市化不会增加疣猴的 "好奇心"，但半城市化个体会选择性地探索与食物有关的人为物品

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-05-01 DOI: 10.1093/cz/zoae022

Lindsey Ellington, Stephanie Mercier, Alba Motes-Rodrigo, Erica van de Waal, Sofia Forss

{"title":"Urbanization does not increase ‘object curiosity’ in vervet monkeys, but semi-urban individuals selectively explore food related anthropogenic items","authors":"Lindsey Ellington, Stephanie Mercier, Alba Motes-Rodrigo, Erica van de Waal, Sofia Forss","doi":"10.1093/cz/zoae022","DOIUrl":"https://doi.org/10.1093/cz/zoae022","url":null,"abstract":"Urban environments expose animals to abundant anthropogenic materials and foods that facilitate foraging innovations in species with opportunistic diets and high behavioural flexibility. Neophilia and exploration tendency are believed to be important behavioural traits for animals thriving in urban environments. Vervet monkeys (Chlorocebus pygerythrus) are one of few primate species that have successfully adapted to urban environments, thus making them an ideal species to study these traits. Using a within-species cross-habitat approach, we compared neophilia and exploration of novel objects (jointly referred to as ‘object curiosity’) between semi-urban, wild, and captive monkeys to shed light on the cognitive traits facilitating urban living. To measure ‘object curiosity’, we exposed monkeys to various types of novel stimuli and compared their approaches and explorative behaviour. Our results revealed differences in the number of approaches and explorative behaviour towards novel stimuli between the habitat types considered. Captive vervet monkeys were significantly more explorative than both semi- urban and wild troops, suggesting that positive experiences with humans and lack of predation, rather than exposure to human materials per se, influence object curiosity. Across habitats, juvenile males were the most explorative age-sex class. This is likely due to males being the dispersing sex and juveniles being more motivated to learn about their environment. Additionally, we found that items potentially associated with human food, elicited stronger explorative responses in semi-urban monkeys than non-food related objects, suggesting that their motivation to explore might be driven by “anthrophilia” i.e., their experience of rewarding foraging on similar anthropogenic food sources. We conclude that varying levels of exposure to humans, predation and pre-exposure to human food packaging explain variation in ‘object curiosity’ in our sample of vervet monkeys.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"19 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140841492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The influence of the post-autotomy regeneration of a sexual trait and mating tactics in a fiddler crab 大闸蟹自体切除后性状再生和交配策略的影响

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-04-26 DOI: 10.1093/cz/zoae019

Pablo D Ribeiro, Nahuel E Farías, Emiliano H Ocampo, Jesús D Nuñez, Tomás A Luppi

{"title":"The influence of the post-autotomy regeneration of a sexual trait and mating tactics in a fiddler crab","authors":"Pablo D Ribeiro, Nahuel E Farías, Emiliano H Ocampo, Jesús D Nuñez, Tomás A Luppi","doi":"10.1093/cz/zoae019","DOIUrl":"https://doi.org/10.1093/cz/zoae019","url":null,"abstract":"Male fiddler crabs own an enlarged claw which is a weapon and an ornament. The enlargement of this claw begins from the juvenile stage and continues throughout life. Males may voluntarily lose (i.e. autotomise) this claw. After several moults males may regenerate a new claw, called leptochelous, which acquires a similar length but a lower muscle mass area than the original one, called brachychelous. In some species, regenerated claws develop permanently as leptochelous, the population having two discrete claw morphologies. Other species present morphological variations with leptochelous and brachychelous being two ends of a continuum. In the species Leptuca uruguayensis, we studied the morphological variation of this enlarged claw, whether it may be caused by its regeneration at different male sizes, and its consequences on mating success. We found that claws could not be discriminated as discrete morphs, suggesting a morphological continuum from brachychelous to leptochelous. Regenerated claws in the laboratory were initially small and proportional to body size, while a field experiment confirmed that claw size is recovered after several moults. Morphological variation may be caused by energetic limitations where males of different sizes must differently trade-off between restitution of claw length (ornament function) or claw muscle area (weapon function). Fiddler crabs use two mating tactics with different levels of female choice. However, regardless of the mating tactic, leptochelous males were at a disadvantage at high densities, while not at low densities, suggesting that the consequences of autotomy and regeneration on mating success may depend on the social context.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"118 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140798859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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