Acta Zoologica最新文献

In Vitro and In Vivo Effect of Amitraz on Honey Bee Drone Sperm Quality 咪唑嗪对蜜蜂雄蜂精子质量的体内外影响

IF 1.3 4区生物学

Acta Zoologica Pub Date : 2025-05-01 DOI: 10.1111/azo.12555

Janice Faith Murray, Gerhard van der Horst, Mike Allsopp, Retha Christina Magrietha Kotzé

{"title":"In Vitro and In Vivo Effect of Amitraz on Honey Bee Drone Sperm Quality","authors":"Janice Faith Murray, Gerhard van der Horst, Mike Allsopp, Retha Christina Magrietha Kotzé","doi":"10.1111/azo.12555","DOIUrl":"https://doi.org/10.1111/azo.12555","url":null,"abstract":"Honey bee hive infestation by the ectoparasitic mite, Varroa destructor, has been a major cause of declining populations. Treating such infestations is important for sustainability. Knowledge about the sub-lethal effects of commonly used acaricides on drone reproductive health, particularly sperm quality, is limited. The effect of in vitro and in vivo acaricide (amitraz) exposure was evaluated using Cape honey bee (Apis mellifera capensis) drone body size and sperm quality. For the in vitro study, semen samples were exposed to three concentrations of amitraz (125, 250, 500 μM). The in vivo study entailed in-hive Apivar treatment as per commercial recommendations. Adult drones were harvested following three weeks of treatment. Drone body weight (determined in the in vivo study only) was significantly higher in amitraz-exposed drones. No correlations were found between drone weight, sperm volume or concentration. In both studies, amitraz exposure had statistically insignificant effects on sperm motility and structure, while vitality significantly decreased in the 500 μM amitraz-exposed in vitro group. Sperm structure remained unaffected in both studies. This study highlighted the absence of sub-lethal effects of high doses of amitraz on sperm functionality. When used as advised, amitraz exposure does not have a detrimental effect on drone sperm quality.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 4","pages":"493-502"},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12555","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Age Structure and Size Variation in Three Closely Related Species of Casque-Headed Frogs of the Genus Trachycephalus (Hylidae: Lophyohylini) 冠头蛙属三种近缘种的年龄结构和体型变异（蛙科：冠头蛙）

IF 1.3 4区生物学

Acta Zoologica Pub Date : 2025-04-17 DOI: 10.1111/azo.12552

Isabella Parreira, Fernanda B. Passaglia, Pedro P. de Queiroz, Anderson K. S. De-Lima, Reuber A. Brandão

{"title":"Age Structure and Size Variation in Three Closely Related Species of Casque-Headed Frogs of the Genus Trachycephalus (Hylidae: Lophyohylini)","authors":"Isabella Parreira, Fernanda B. Passaglia, Pedro P. de Queiroz, Anderson K. S. De-Lima, Reuber A. Brandão","doi":"10.1111/azo.12552","DOIUrl":"https://doi.org/10.1111/azo.12552","url":null,"abstract":"Parreira. I.P. 2025. Age structure and size variation in three closely related species of casque-headed frogs of the genus Trachycephalus (Hylidae: Lophyohylini)—Acta zoologica (Estocolmo). This study provides insights into longevity, sexual maturity and growth curves in closely related casque-headed treefrogs distributed across distinct Brazilian biomes. Age estimation based on the counting of lines of arrested growth (LAGs) in bone tissue revealed a longevity of 6 years in Trachycephalus nigromaculatus and T. atlas, which is uncommon among Neotropical species. T. mambaiensis exhibited a distinct pattern of sexual maturity compared to the other species, suggesting divergent developmental strategies within the clade and possibly reflecting a higher reproductive investment at younger ages. A correlation between estimated age and snout–vent length (SVL) was observed in two of the three analysed species (T. nigromaculatus and T. atlas); however, this correlation may vary depending on the sampled locality and sample size. The growth model revealed distinct patterns within the clade: T. nigromaculatus exhibited a decline in growth rate corresponding to the age of sexual maturity, whereas T. atlas showed a non-stabilised growth pattern. Our findings provide novel information for understanding the life history of explosive breeding species and emphasise the importance of museum specimens in ecological and evolutionary research.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 4","pages":"485-492"},"PeriodicalIF":1.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12552","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A micro-CT approach to the anatomy of Pectinariidae Quatrefages, 1866 (Annelida) Pectinariidae Quatrefages, 1866（环节动物）显微ct解剖方法

IF 1.3 4区生物学

Acta Zoologica Pub Date : 2025-04-15 DOI: 10.1111/azo.12549

Julio Parapar, María Barroso, María Candás, Juan Moreira

{"title":"A micro-CT approach to the anatomy of Pectinariidae Quatrefages, 1866 (Annelida)","authors":"Julio Parapar, María Barroso, María Candás, Juan Moreira","doi":"10.1111/azo.12549","DOIUrl":"https://doi.org/10.1111/azo.12549","url":null,"abstract":"The Micro-computed X-ray tomography (micro-CT) technique is used to examine the external and internal anatomy of four species of Pectinariidae (Annelida: Terebellida): Amphictene auricoma, Cistenides granulata, Cistenides hyperborea and Lagis sp., from material collected off Iceland and NW Spain. The main aims were: (1) to provide new and additional observations on pectinariid external and internal anatomy, (2) to test the usefulness and limitations of micro-CT against other techniques and 3) to explore for characters with potential taxonomic value to be studied in the future. Micro-CT provided good images of several external relevant taxonomic characters such as paleae, cephalic veil, scaphe, scaphal hooks and anal lobe, but was especially useful for the examination of internal anatomy. The best visualized organs were those of higher tissue density (i.e. body musculature, digestive tract, main blood vessel, glands), whereas less electrodense tissues (i.e. peritoneal lining/septa, nephridia, nervous system) were less evident. Images of internal organs showed heterogeneous results: micro-CT may serve well to assess regionalization of digestive system and its variability across taxa, together with musculature and glands, while images of circulatory and nervous systems only show good results in their more electrodense components (main blood vessels/heart and ventral nerve cord/brain, respectively).","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 4","pages":"463-484"},"PeriodicalIF":1.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12549","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Contaminant levels and their effects on the American continent chelonian: A systematic review 污染物水平及其对美洲大陆龟类的影响：系统综述

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2025-03-29 DOI: 10.1111/azo.12550

Fernanda Victoria Nery Dias, Lucas Maia Garcês, Adriano Teixeira de Oliveira

{"title":"Contaminant levels and their effects on the American continent chelonian: A systematic review","authors":"Fernanda Victoria Nery Dias, Lucas Maia Garcês, Adriano Teixeira de Oliveira","doi":"10.1111/azo.12550","DOIUrl":"https://doi.org/10.1111/azo.12550","url":null,"abstract":"Excessive metal pollution from anthropogenic activities like mining and industrial waste discharge has increasingly impacted freshwater ecosystems. Freshwater chelonians (Testudines) are bioindicators of environmental pollution because of their longevity, ecological diversity, and trophic positioning. This systematic review assessed toxic metal bioaccumulation in freshwater turtles across the American continent, focusing on mercury (Hg), a global public health and ecological concern. A comprehensive search on PubMed, Scopus and Web of Science identified 620 papers, of which 32 met the inclusion criteria. The United States and Brazil (93.6%) contributed the most data, with Chelydra serpentina and Podocnemis expansa frequently studied, followed by Canada (4.26%) and Colombia (2.13%). Hg was the predominant contaminant (75% of studies), with the highest concentrations observed in hatchlings and keratinized tissues, such as carapace and claws. Bioaccumulation patterns varied by region, species and life stage, emphasizing physiological and reproductive impacts. This review highlights the need for noninvasive sampling methods and long-term monitoring to guide conservation strategies and assess ecosystem and turtle health. It also highlights the significant lack of data in South America and the lack of studies on juveniles and eggs. Freshwater chelonians remain essential for understanding contamination dynamics and mitigating environmental degradation in aquatic habitats.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 3","pages":"247-264"},"PeriodicalIF":1.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220378","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

Scanning electron microscopy analysis of the developmental, inter- and intraspecific variation in the otoliths of Anguilla anguilla (Linnaeus, 1758) collected from Bafa Lake in Western Anatolia, Türkiye 安圭拉（Linnaeus, 1758）耳石发育、种间及种内变异的扫描电镜分析

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2025-01-28 DOI: 10.1111/azo.12536

Salim Serkan Güçlü, Habil Uğur Koca, Mehmet Cilbiz, Laith A. Jawad

{"title":"Scanning electron microscopy analysis of the developmental, inter- and intraspecific variation in the otoliths of Anguilla anguilla (Linnaeus, 1758) collected from Bafa Lake in Western Anatolia, Türkiye","authors":"Salim Serkan Güçlü, Habil Uğur Koca, Mehmet Cilbiz, Laith A. Jawad","doi":"10.1111/azo.12536","DOIUrl":"https://doi.org/10.1111/azo.12536","url":null,"abstract":"This study aimed to identify unique traits, grounded in a thorough description of the sagitta otolith of Anguilla anguilla, to characterize its ontogenetic stages between juvenile and preadult individuals. Twenty-one characteristics were designated to investigate the ontogenetic (when comparing the otolith characteristics of fishes of different sizes, interspecific variation (comparing the otolith characteristics of the studied species with those of related species), and intraspecific variation (comparing the otolith characteristics of the studied species with those of the same species from different localities, i.e. geographical variation). This investigation concluded that the sagittal otoliths exhibited ontogenetic disparities based on the shapes recorded by different age groups. Otoliths of the young individuals belonging to fish total length groups GI and GII have shown differences in shape from those of the older individuals in the other seven length groups surveyed. An assessment of previously available otolith descriptions of A. anguilla collected from other areas revealed differences between species across larger geographic areas, making some features unsuitable for further investigation. However, other otolith traits were found to be reliable across different length groups and could be considered species-specific features for identification. These traits include otolith width, otolith thickness, the shape of the mesial and lateral surfaces, the shape of the sulcus acusticus, the presence or absence of ostio-caudal differentiation, and the shape, size, and thickness of the rostrum.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 3","pages":"329-342"},"PeriodicalIF":1.1,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220322","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

Correction to “Microanatomy of the digestive tract and accessory organs of the Japanese flathead (Inegocia japonica Cuvier, 1829) (Scorpaeniformes, Platycephalidae)” 修正“日本平头鱼（ingocia japonica Cuvier, 1829）（scorpaenformes, Platycephalidae）消化道和附属器官的显微解剖”

IF 1.1 4区生物学

Acta Zoologica Pub Date : 2025-01-27 DOI: 10.1111/azo.12537

引用次数: 0

Inter-population variations of saccular otolith of Walton's mudskipper (Periophthalmus waltoni) of the Persian Gulf and Gulf of Oman 波斯湾和阿曼湾沃尔顿弹涂鱼囊状耳石的种群间变异

IF 1.3 4区生物学

Acta Zoologica Pub Date : 2025-01-15 DOI: 10.1111/azo.12531

Mahdi Iranmanesh, Majid Askari Hesni, Somaye Zangiabadi, Mohammadreza Lashkari

{"title":"Inter-population variations of saccular otolith of Walton's mudskipper (Periophthalmus waltoni) of the Persian Gulf and Gulf of Oman","authors":"Mahdi Iranmanesh, Majid Askari Hesni, Somaye Zangiabadi, Mohammadreza Lashkari","doi":"10.1111/azo.12531","DOIUrl":"https://doi.org/10.1111/azo.12531","url":null,"abstract":"Understanding population structure is crucial for predicting species' responses to environmental change and elucidating evolutionary history. This study investigated the population structure of Periophthalmus waltoni in the Persian Gulf and Gulf of Oman using landmark-based geometric morphometrics (GMM) and discrete wavelet transform (DWT) methods on sagittal otoliths. The objectives were to (i) examine otolith shape variation across different populations and (ii) compare GMM and DWT methods for resolving population differences. Both methods distinguished populations based on general otolith shape, with DWT revealing finer details due to its high accuracy in detecting otolith margins. Interestingly, populations from Sistan-Baluchestan and Hormozgan, despite geographical separation, showed minimal variation in shape, suggesting environmental factors may influence otolith morphology. Distinct otolith shapes in the Khuzestan population, likely due to geographic isolation, may be influenced by the mangrove forests near Qeshm Island acting as barriers to larval dispersal. This aligns with molecular data and indicates that the relatively young eastern Persian Gulf may also contribute to these differences. Our findings revealed distinct geographical patterns in otolith shape, highlighting the influence of local environmental factors and larval dispersal on population differentiation. These results provide valuable insights into P. waltoni's population structure and evolutionary history, advancing our understanding of its adaptation to the diverse environmental conditions of the Persian Gulf and Oman Sea.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 4","pages":"442-453"},"PeriodicalIF":1.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012963","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

Morphological variations of the ovarian follicles and oviduct of commercial Lohmann Brown and indigenous Potchefstroom Koekoek breeds 商业罗曼布朗品种和本土品种卵巢卵泡和输卵管的形态差异

IF 1.3 4区生物学

Acta Zoologica Pub Date : 2025-01-07 DOI: 10.1111/azo.12534

Victoria Rankotsane Hlokoe, Thobela Louis Tyasi, Vusi Gordon Mbazima

{"title":"Morphological variations of the ovarian follicles and oviduct of commercial Lohmann Brown and indigenous Potchefstroom Koekoek breeds","authors":"Victoria Rankotsane Hlokoe, Thobela Louis Tyasi, Vusi Gordon Mbazima","doi":"10.1111/azo.12534","DOIUrl":"https://doi.org/10.1111/azo.12534","url":null,"abstract":"Egg laying begins with the orderly development of follicles in the chicken ovaries and transportation through the oviduct with deposition of nutrients until the eggs are produced. However, the ovarian follicles and oviduct morphology of Lohmann Brown and Potchefstroom Koekoek laying hens have not yet been studied. The study aimed to determine the morphological variations of the ovarian follicles and oviduct of Lohmann Brown and Potchefstroom Koekoek laying hens aged 40 weeks. The Student's t-test results revealed that breed had a significant effect (p < .05) on the weight of the small white follicles (SWF), large white follicles (LWF) and small yellow follicles (SYF), where Lohmann Brown performed higher than Potchefstroom Koekoek. The outcomes also displayed that breed had a significant effect (p < .05) on the number of LWF and SYF. The results further displayed that breed had a significant effect (p < .05) on the weight of F2, F3, F4 and F5. The outcomes showed that breed had a significant effect (p < .05) on the weights of the infundibulum, magnum and isthmus, where Lohmann Brown displayed a higher performance than Potchefstroom Koekoek. Furthermore, the findings revealed that breed had a significant effect (p < .05) on the lengths of the magnum, isthmus and shell gland, where Lohmann Brown displayed a better performance than Potchefstroom Koekoek. The findings also showed that the discriminant variables in the study are the isthmus length, isthmus weight and magnum length. In conclusion, there are morphological variations in the weights and numbers of the ovarian follicles, and the weights and lengths of the oviduct segments of Lohmann Brown and Potchefstroom Koekoek laying hens.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 4","pages":"454-462"},"PeriodicalIF":1.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12534","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Male and female genital structures of Bangasternus planifrons (Coleoptera: Curculionidae: Rhinocyllini) from Turkey: A scanning electron microscope study 土耳其扁尾螯虾雌雄生殖结构的扫描电镜研究（鞘翅目：扁尾螯虾科）

IF 1.3 4区生物学

Acta Zoologica Pub Date : 2024-12-10 DOI: 10.1111/azo.12530

Cenk Yücel, Neslihan Bal, Didem Coral, Zekiye Suludere

{"title":"Male and female genital structures of Bangasternus planifrons (Coleoptera: Curculionidae: Rhinocyllini) from Turkey: A scanning electron microscope study","authors":"Cenk Yücel, Neslihan Bal, Didem Coral, Zekiye Suludere","doi":"10.1111/azo.12530","DOIUrl":"https://doi.org/10.1111/azo.12530","url":null,"abstract":"Bangasternus planifrons (Brullé, 1832) specimens collected from Ankara-Bala were studied. The paper presents a scanning electron microscopic examination of ultrastructural features of aedeagus and spermatheca of Bangasternus planifrons (Brullé, 1832) (Coleoptera: Curculionidae: Rhinocyllini) from Türkiye for the first time. The fact that Bangasternus is a genus with three species in Türkiye makes the study more important. Accordingly, detailed investigation of aedeagus and spermatheca is very important to obtain new diagnostic characteristics in Bangasternus. The parts which include systematic characters such as spermatheca, genital spicule, sternite eight and coxite figures were drawn in detail and these characters were discussed on species, genera and tribus levels. While significant differences were observed among the species in genital spicula, coxite, stylus and spermateca, a difference that would reveal a genus discrimination character by evaluating these structures could not be obtained according to the available findings. Photos in stereomicroscope and scanning electron microscope are also given in the text.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 4","pages":"431-441"},"PeriodicalIF":1.3,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012845","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

Comparative morphology of the larval mouthparts among six species of Sphingidae (Insecta: Lepidoptera), with discussions on their diversity 6种鞘科昆虫幼虫口器的形态比较及其多样性探讨

IF 1.3 4区生物学

Acta Zoologica Pub Date : 2024-12-05 DOI: 10.1111/azo.12529

Tian-Yu Yu, Wan-Xin Cai, Lu Jiang

引用次数: 0