Current Zoology最新文献_第3页

The critical role of arachidonic acid on molting in spiders. 花生四烯酸在蜘蛛蜕皮中的关键作用。

IF 1.6 2区生物学

Current Zoology Pub Date : 2024-09-24 eCollection Date: 2025-06-01 DOI: 10.1093/cz/zoae056

Lelei Wen, Lieping Wang, Zhigan Wang, Haixin Zhang, Lang Hu, Baoyu Peng, Yu Peng, Xiaoguo Jiao, Changchun Li

引用次数: 0

Torpor expression and patterns in 3 sympatric rodents from Inner Mongolia. 内蒙古3种同域啮齿动物的冬眠表达及模式。

IF 1.6 2区生物学

Current Zoology Pub Date : 2024-09-24 eCollection Date: 2025-06-01 DOI: 10.1093/cz/zoae057

Qing-Sheng Chi, Gansukh Sukhchuluun, Jing Wen, De-Hua Wang, Fritz Geiser

{"title":"Torpor expression and patterns in 3 sympatric rodents from Inner Mongolia.","authors":"Qing-Sheng Chi, Gansukh Sukhchuluun, Jing Wen, De-Hua Wang, Fritz Geiser","doi":"10.1093/cz/zoae057","DOIUrl":"10.1093/cz/zoae057","url":null,"abstract":"The diversity of rodents in Asian deserts is high. Nevertheless, little is known about their use of daily torpor and hibernation, which are employed by many small mammals worldwide for energy and water conservation to permit survival under adverse environmental conditions. We quantified for the first time, using temperature transponders and data loggers, long-term torpor expression and patterns in sympatric desert hamsters Phodopus roborovskii, striped hamsters Cricetulus barabensis and 3-toed jerboas Dipus sagitta under controlled conditions. Animals were live-trapped in Inner Mongolia in August and held in captivity under short photoperiods and low ambient temperatures (T as) for about 6 months. Both hamster species (~half of individuals) expressed spontaneous (food available) daily torpor. Daily torpor in desert hamsters was less frequent and shallower than that in striped hamsters, which also had longer torpor bouts during torpor at T a 15.8 ± 0.4 °C. Only one individual jerboa entered hibernation spontaneously at T a 6.2 ± 0.5°C, but all hibernated after food deprivation. The 2 hamster species only slightly changed their body mass during the acclimation, whereas jerboas greatly increased their body mass by 27.9% during the first 2 months of acclimation probably as a preparation for the hibernating season. Our data show that short photoperiod and moderately low T a induces spontaneous daily torpor in the 2 hamster species, suggesting that it is used regularly in the wild. Hibernation in Jerboas occurred at T a 6.2 ± 0.5 °C especially when food was withheld suggesting limited food availability is the proximate trigger of their hibernation.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"71 3","pages":"381-389"},"PeriodicalIF":1.6,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12227420/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144576871","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

The Slithering Dead: Does locomotor performance affect post-capture death feigning in dice snakes (Natrix tessellata, Laurenti 1768)? 滑行死亡：运动性能是否会影响骰子蛇（Natrix tessellata，劳伦蒂 1768 年）捕获后的佯死行为？

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-09-18 DOI: 10.1093/cz/zoae054

Vukašin Bjelica, Marko Maričić, Marko Anđelković, Ljiljana Tomović, Dragan Arsovski, Ana Golubović

{"title":"The Slithering Dead: Does locomotor performance affect post-capture death feigning in dice snakes (Natrix tessellata, Laurenti 1768)?","authors":"Vukašin Bjelica, Marko Maričić, Marko Anđelković, Ljiljana Tomović, Dragan Arsovski, Ana Golubović","doi":"10.1093/cz/zoae054","DOIUrl":"https://doi.org/10.1093/cz/zoae054","url":null,"abstract":"Functional constraints between different types of antipredator behavior should be common, especially if they are on the opposite sides of the behavioral spectrum such as flight and post-capture immobility. We examined a potential compromise between post-capture immobility displays and sprint speed in dice snakes (Natrix tessellata), using a field-based approach. We sampled snakes (N=238) from two populations: from a dense island population free of mammal predators, and from a less dense mainland population, preyed upon by both bird and mammal predators. We explored the effects of sexual maturity, temperature, body size, presence of palpable food in the gut and injuries on the occurrence and duration of post-capture immobility as well as sprint speed. Our results confirm the existence of functional constraints between locomotor performance and post-capture immobility in dice snakes. Faster dice snakes start escaping promptly after release, while slower individuals utilize more passive antipredator behaviors such as death feigning. Local adaptations seem to have great influence on behavioral compromise, since the mammal-free island population exhibited a higher incidence of post-capture immobility and a significantly lower sprint speed, compared to the less dense mainland population. Additionally, immature individuals tended to avoid death feigning and their post-capture immobility lasted shorter compared to adult individuals. It remains to be seen how individuals adjust their behavior to accomodate locomotor constraints, and in which specific phases of the predator-prey interaction these adjustments occur.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257104","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

Functional reproductive morphology of the snapping shrimp genus Synalpheus Spence Bate, 1888 (Decapoda, Alpheidae). 螯虾属的功能生殖形态，1888（十足目，螯虾科）。

IF 1.6 2区生物学

Current Zoology Pub Date : 2024-09-16 eCollection Date: 2025-06-01 DOI: 10.1093/cz/zoae053

Isabela R R Moraes, Mariana Antunes, Laura S López-Greco, Fernando José Zara, Antonio Leão Castilho

{"title":"Functional reproductive morphology of the snapping shrimp genus Synalpheus Spence Bate, 1888 (Decapoda, Alpheidae).","authors":"Isabela R R Moraes, Mariana Antunes, Laura S López-Greco, Fernando José Zara, Antonio Leão Castilho","doi":"10.1093/cz/zoae053","DOIUrl":"10.1093/cz/zoae053","url":null,"abstract":"Shrimps of the genus Synalpheus (Caridea) are commonly found in subtropical and tropical marine habitats around the world. The present work aims to provide the first description of the reproductive system of this genus using histological, histochemical, and morphological perspectives to elucidate the gonochoric or hermaphrodite sexual system in this genus. Males have a slender and very translucent reproductive system that is challenging to observe. The entire cephalothorax was histologically sectioned to ensure that all regions of the reproductive system could be identified. This non-gambarelloides group shows a gonochoric condition. The caridean pattern of the reproductive system was observed where the male has a pair of testes and a pair of very thin vasa deferentia, ending at the opening of the gonopore. Spermatophore structure is absent, without any layers surrounding the spermatozoa that are aggregated in a sperm mass. In females, the reproductive system consists of a pair of ovaries that extend to the end of the pleon. The extension of the ovary has a particular pattern compared to other caridean shrimps. Here, we hypothesize that males invest energy on somatic morphological structures to protect the host and female, using the larger pistol-like cheliped, while females invest energy in reproduction since all the members of this group are typical \"pair-bond\" examples. The observed pattern of the reproductive male morphology could also be evidence of a possible synapomorphy for this genus within the infraorder.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"71 3","pages":"338-352"},"PeriodicalIF":1.6,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12227426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144576867","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

Early life food-intake modulates effects of diet restriction on lifespan and fecundity in later life in a predatory mite (Acari: Phytoseiidae) 捕食螨（螨科：Phytoseiidae）生命早期的食物摄入调节饮食限制对其生命后期寿命和繁殖力的影响

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-09-14 DOI: 10.1093/cz/zoae047

Yun Xu, Keshi Zhang, Xiao Han, Zhi-Qiang Zhang

{"title":"Early life food-intake modulates effects of diet restriction on lifespan and fecundity in later life in a predatory mite (Acari: Phytoseiidae)","authors":"Yun Xu, Keshi Zhang, Xiao Han, Zhi-Qiang Zhang","doi":"10.1093/cz/zoae047","DOIUrl":"https://doi.org/10.1093/cz/zoae047","url":null,"abstract":"The nutritional status of an individual can significantly influence its life history traits, including development, growth, reproduction, and survival. In the predatory mite Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae), the plasticity of life history traits, such as developmental time and size at maturity, is influenced by the quality and quantity of food. This study aimed to investigate the effects of dietary restriction at different life stages (i.e., juvenile, early adulthood, and later adulthood) on the lifespan and fecundity of P. persimilis. We found that reduced dietary intake during early adulthood resulted in a shorter lifespan for both male and female P. persimilis. Furthermore, this study demonstrated a sex-specific response to dietary restriction: it extended the lifespan of males but reduced that of females during later adulthood. Diet restriction during the post-ovipositional period of females showed the most variable life history trait response. Our results showed that the impact of diet restriction at different life stages can have combined influences on the post-ovipositional duration of P. persimilis, where the individuals receiving diet restriction during immature development and early adulthood had a greater reduction in ovipositional duration as those experiencing diet restriction during late adulthood. Additionally, we observed a positive correlation between the lifespan and fecundity of females, with higher prey availability increasing both. The insights obtained from our research contribute to a better understanding of the aging process and dietary requirements of P. persimilis, which can facilitate the development of more effective biological control strategies using this predator for spider mites in agriculture.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"20 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269158","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

Yawning In Sync: Implications For Social Cohesion In Horses 同步打哈欠：马匹社会凝聚力的意义

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-09-13 DOI: 10.1093/cz/zoae052

Alice Galotti, Martina Romano, Paolo Baragli, Elisabetta Palagi

引用次数: 0

The role of primate-specific genes in the phenotypic evolution of lorises. 灵长类特异性基因在懒猴表型进化中的作用。

IF 1.6 2区生物学

Current Zoology Pub Date : 2024-09-13 eCollection Date: 2025-04-01 DOI: 10.1093/cz/zoae048

Chunyan Chen, Yong Shao, Sheng Wang, Mingli Li, Haifa Qiao

引用次数: 0

Long-term effect of inbreeding in the yellow steppe lemming (Eolagurus luteus) captive colony 黄草原旅鼠圈养群近亲繁殖的长期影响

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-09-10 DOI: 10.1093/cz/zoae051

Vladimir V Streltsov, Olga G Ilchenko, Elena V Kotenkova

{"title":"Long-term effect of inbreeding in the yellow steppe lemming (Eolagurus luteus) captive colony","authors":"Vladimir V Streltsov, Olga G Ilchenko, Elena V Kotenkova","doi":"10.1093/cz/zoae051","DOIUrl":"https://doi.org/10.1093/cz/zoae051","url":null,"abstract":"In the current research, we investigated the impact of gradually increasing inbreeding on the life span and reproductive rate of yellow steppe lemmings (Eolagurus luteus) that reproduced in the Moscow Zoo. The focal captive colony existed during 2017–2021. The studied animals belonged to the second–tenth generations. The founders of the colony were five females and five males originated from three females and four males live-trapped in the Zaisan basin (Kazakhstan). The degree of their descendant relatedness progressively increased. The animals intended to be used for reproduction were distributed to the pairs with unfamiliar partners. We constructed the pedigree of 177 individuals and calculated their inbreeding coefficients. This parameter varied from 0 to 0.29, the maximum values were registered in the lemmings of seventh–tenth generations. We measured the life span of 61 individuals and used information about the reproduction or its absence in 45 pairs. A substantial decline in the individual life span and reproductive parameters in the breeding pairs with a progressive increase of the inbreeding coefficients was registered. The number of delivered litters, born pups, and young lived up to the age of puberty significantly depended on the level of mother inbreeding. The noticeable traits of inbreeding depression in the colony appeared in 2019–2020, when the offspring inbreeding coefficients reached approximately 0.2. Therefore, we assume that if the E. luteus population originates from a relatively small number of non-inbred and unfamiliar individuals, then the successful reproduction without significant inbreeding depression will continue for several generations of offspring.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269377","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

Tracking toads from dusk till dawn: Linking inter- and intra-individual variation in movement behavior 从黄昏到黎明追踪蟾蜍：将个体间和个体内的运动行为差异联系起来

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-09-09 DOI: 10.1093/cz/zoae050

Nathalie Jreidini, David M Green

{"title":"Tracking toads from dusk till dawn: Linking inter- and intra-individual variation in movement behavior","authors":"Nathalie Jreidini, David M Green","doi":"10.1093/cz/zoae050","DOIUrl":"https://doi.org/10.1093/cz/zoae050","url":null,"abstract":"Animals can differ in their individual movement behaviors during their daily displacements. Studies of animal movement patterns often disregard the need to understand individual variation in these patterns and the role of this variation in shaping population distributions of movements. To assess the link between individual movements and population distributions, we radio tracked 13 Fowler’s Toads (Anaxyrus fowleri) in Long Point, Ontario, Canada, after their breeding season. We recorded individual coordinates every 30 minutes, from the moment they emerged from their burrows around dusk until they burrowed in the morning, and obtained a total of 157 movements. We used the resulting series of step lengths and turning angles in a Hidden Markov Model to estimate movement type as ‘directed’ or ‘non-directed’. We also assigned to each encounter one of three space-dependent movement states: ‘foraging’, ‘in transit’, or ‘searching’, and found that movement type and state switched within individuals irrespective of time during a single night. We find that switching between movement types varied throughout the night, leading to stochastic within-individual variation in movements, and the distribution of movement distances differed significantly among individuals. Movement states, however, were time dependent, suggesting displacement routines were similar across individuals. Variation in movement behavior within individuals scales up to result in variation among individuals which, in turn, was found to shape the distribution of sampled individuals in the population. Our findings therefore underline the importance of a multi-scale approach in the study of movement.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"16 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257106","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

Structural characteristics of the epidermis in marine and freshwater finless porpoises adapted to distinct osmotic environments 适应不同渗透环境的海洋和淡水江豚表皮的结构特征

IF 2.2 2区生物学

Current Zoology Pub Date : 2024-09-07 DOI: 10.1093/cz/zoae049

Haojie Zhou, Changqun Zhang, Bin Tang, Haobo Zhang, Jinsong Zheng, Kexiong Wang, Dekui He, Yujiang Hao

{"title":"Structural characteristics of the epidermis in marine and freshwater finless porpoises adapted to distinct osmotic environments","authors":"Haojie Zhou, Changqun Zhang, Bin Tang, Haobo Zhang, Jinsong Zheng, Kexiong Wang, Dekui He, Yujiang Hao","doi":"10.1093/cz/zoae049","DOIUrl":"https://doi.org/10.1093/cz/zoae049","url":null,"abstract":"The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis, Pilleri & Gihr, 1972; YFP) is an exclusively freshwater cetacean species inhabiting the Yangtze River and its connecting large lakes. As the primary line of defense in maintaining physiological equilibrium, the epidermis of the porpoise is expected to have undergone structural adaptations due to the shift from the marine to the freshwater environment. This study compared the microstructural and ultrastructural features of the epidermis of YFP and its marine counterpart, the East Asian finless porpoise (Neophocaena asiaeorientalis sunameri, Pilleri & Gihr, 1975; EAFP). Microscopic structural observations and statistical analyses of the epidermal thickness demonstrated no significant differences in the cell structure or distribution between the two porpoise species. However, the epidermis of the YFP contained more abundant stratum basale cells. The outermost lipid stratum corneum exhibited a thinner cell layer with wider neutral lipid droplets to resist the passive entry of water molecules in the hypotonic environment. In contrast, for the EAFP, a more uniformly arranged stratum basale in the epidermis led to denser keratin fibers and robust desmosomes within each epidermal layer at the ultrastructural level. This tight arrangement of cells can reduce transepidermal water loss (TEWL) in an environment with higher osmotic pressure. In conclusion, the two finless porpoise species appear to employ different epidermal mechanisms to adapt to their distinct osmotic environments. The YFP appears to possess a \"lipid waterproofing\" epidermal structure, while the EAFP possesses a \"thick and compact water-retaining\" epidermal structure to cope with potential water loss.","PeriodicalId":50599,"journal":{"name":"Current Zoology","volume":"6 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186614","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