Acta ZoologicaPub Date : 2025-03-29DOI: 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":"<p>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 <i>Chelydra serpentina</i> and <i>Podocnemis expansa</i> 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.</p>","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}
Acta ZoologicaPub Date : 2025-03-11DOI: 10.1111/azo.12541
Laith A. Jawad, Golnaz Sayyadzadeh, Hamid Reza Esmaeili
{"title":"Identification of loach fishes from Iran (Cypriniformes: Cobitoidea) using some osteological characters","authors":"Laith A. Jawad, Golnaz Sayyadzadeh, Hamid Reza Esmaeili","doi":"10.1111/azo.12541","DOIUrl":"https://doi.org/10.1111/azo.12541","url":null,"abstract":"<p>This study examines eight skeletal features to distinguish species within the Cobitidae and Nemacheilidae families, focusing on the vertebral column, fin structure and caudal fin rays. The study analyses the construction and regionalization of the vertebral column, the interdigitation of pterygiophores with neural and haemal spines in the dorsal and anal fins, and the distribution of procurrent rays in the caudal fin. These characteristics are used to identify taxonomically relevant traits and separate species within these two families. The study also proposes a new method for defining vertebral column regions and presents new anatomical data for cobitoid species in Iran, including the division of the vertebral column into five regions: postcranial, abdominal (anterior and posterior) and caudal (anterior and posterior).</p>","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"107 1","pages":"95-121"},"PeriodicalIF":1.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145646513","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}
Acta ZoologicaPub Date : 2025-02-22DOI: 10.1111/azo.12540
Salman Khan, Laith A. Jawad, Mohammad Afzal Khan, Joo Myun Park, Ankita, Farah Bano, Kaish Miyan
{"title":"The relationships between fish length and otolith size of the striped snakehead, Channa striata (Bloch, 1793), collected from the River Ganga and its two tributaries in India","authors":"Salman Khan, Laith A. Jawad, Mohammad Afzal Khan, Joo Myun Park, Ankita, Farah Bano, Kaish Miyan","doi":"10.1111/azo.12540","DOIUrl":"https://doi.org/10.1111/azo.12540","url":null,"abstract":"<p>The relationship between the total length of fish and the morphometric characteristics of their otoliths (length, width, and weight) was examined in striped snakehead (<i>Channa striata</i>, Bloch, 1793) specimens collected from the River Ganga and its two tributaries in India. <i>Channa striata</i>, a commercially valuable species in India, was the focus of this study, which aimed to analyse the statistical correlations between the fish's total and standard lengths and their corresponding otolith measurements, with the expectation that the data will contribute to future research on the species' biology, particularly its age, and growth patterns. Both linear and non-linear regression models were applied, and the regression equations varied significantly between the three collection sites. These findings represent the first investigation into the relationship between otolith morphology and total fish length for striped snakehead from the River Ganga and its tributaries in India.</p>","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"107 1","pages":"86-94"},"PeriodicalIF":1.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145646442","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}
Acta ZoologicaPub Date : 2025-02-07DOI: 10.1111/azo.12539
Zeid Alia, El Amine Khechekhouche, Djilani Ghemam Amara, Mohammed Messaoudi, Nezar Cherrada, Makhlouf Sekour, Sheikh F. Ahmad, Sabry M. Attia, Barbara Sawicka, Mohammed Messaoudi
{"title":"Exploring diversity, abundance and ecological impacts of rodents in Saharan agriculture regions (Souf-Algeria)","authors":"Zeid Alia, El Amine Khechekhouche, Djilani Ghemam Amara, Mohammed Messaoudi, Nezar Cherrada, Makhlouf Sekour, Sheikh F. Ahmad, Sabry M. Attia, Barbara Sawicka, Mohammed Messaoudi","doi":"10.1111/azo.12539","DOIUrl":"https://doi.org/10.1111/azo.12539","url":null,"abstract":"<p>The following subject provides an in-depth look into the significance of rodents in the Souf region concerning agriculture and ecology. The article points out that rodents, as mammals, play a critical role in various ecosystems, with many mammalian species being rodents. They contribute to agriculture, sanitation, food, medicine, ecology and religion. Rodents play a vital role in vegetation dynamics by spreading plant seeds and influencing predator distribution. However, preying on crops can also cause losses in different ways, depending on the plant type and biotope. The study focuses on eight research stations in the Souf region, describing their characteristics and vegetation. The methods used for rodent inventory include fingerprinting, burrow counting and random trapping using different techniques. Statistical methods are then applied to analyse the collected data. The study identifies ten rodent species in the Souf region, belonging to two families, three subfamilies and five genera. The sex distribution varies among species. The study results reveal variations in rodent abundance across different stations and months, with <i>Rattus rattus</i> and <i>Mus musculus</i> being the most common species in certain stations. The diversity and equitability values indicate a relatively balanced distribution among recorded species in the sample period. The study provides comprehensive insights into rodent ecology, behaviour and distribution in the Souf region, emphasizing their importance and potential impacts on agriculture and ecosystems.</p>","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"107 1","pages":"76-85"},"PeriodicalIF":1.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145646746","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}
Acta ZoologicaPub Date : 2025-02-02DOI: 10.1111/azo.12538
Salim Serkan Güçlü, Laith A. Jawad, Habil Uğur Koca, Mehmet Cilbiz, Celalettin Aydın
{"title":"Skeletal deformities in Sparus aurata from Türkiye: Incidences from Bafa Lake and the Aegean Sea","authors":"Salim Serkan Güçlü, Laith A. Jawad, Habil Uğur Koca, Mehmet Cilbiz, Celalettin Aydın","doi":"10.1111/azo.12538","DOIUrl":"https://doi.org/10.1111/azo.12538","url":null,"abstract":"<p>The first record of the abnormalities ankylosis (fusion of vertebrae), lordosis (V-shaped curvature of the vertebral column), kyphosis (Λ-shaped curvature), and kypholordosis (the presence of both conditions) have been reported in two specimens of <i>Sparus aurata</i> collected from Bafa Lake and Bodrum-Kıyıkışlacık Coast, Türkiye and used in this study. Both specimens displayed a severe level of deformity. All cases were non-fatal as they occurred in subadult individuals. Assessment of abnormality in the studied specimen was carried out by the morphological diagnosis and using mammography. Externally, the two specimens have a deeper body than the normal specimen. There was significant osteological damage has been revealed by the mammography of these deformed specimens. The saddleback anomaly is in the anterior part of the spinous part of the dorsal fin that showed no missing spines. In addition, the lateral line was deformed in both specimens examined. In addition, there were several minor skeletal abnormalities. These anomalies have been considered an important indicator of environmentally induced stress on the wild fishes. Hence, the present finding highlights the need for closer monitoring of the marine environment and for the identification of the specific factor that causes these abnormalities.</p>","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"107 1","pages":"67-75"},"PeriodicalIF":1.3,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145646608","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}
Acta ZoologicaPub Date : 2025-01-28DOI: 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":"<p>This study aimed to identify unique traits, grounded in a thorough description of the sagitta otolith of <i>Anguilla anguilla</i>, 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 <i>A. anguilla</i> 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.</p>","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}
Acta ZoologicaPub Date : 2025-01-27DOI: 10.1111/azo.12537
{"title":"Correction to “Microanatomy of the digestive tract and accessory organs of the Japanese flathead (Inegocia japonica Cuvier, 1829) (Scorpaeniformes, Platycephalidae)”","authors":"","doi":"10.1111/azo.12537","DOIUrl":"https://doi.org/10.1111/azo.12537","url":null,"abstract":"<p>Jeamah, A., Sudtongkong, C., Kenthao, A., Imsonpang, S., Angsujinda, K., Charoenphon, N., Inchan, A., Kongtueng, P., Mitparian, M. & Senarat, S. (2023). <i>Acta Zoologica</i>. 2023;104(4):575–585.</p><p>In “Materials and Methods” section, the text “were collected in June 2020” was incorrect. This should be corrected to: “were collected in June 2021.”</p><p>We apologize for this error.</p>","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"106 2","pages":"246"},"PeriodicalIF":1.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12537","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595701","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}
Acta ZoologicaPub Date : 2025-01-26DOI: 10.1111/azo.12535
Conrado Mario-Da-Rosa, Amanda J. C. Brum, Luiza Loebens, Tiago G. Santos, Sonia Z. Cechin
{"title":"Natural history of the small snake Epictia munoai (Scolecophidia; Leptotyphlopidae): Reproductive cycle, sexual maturity and activity pattern","authors":"Conrado Mario-Da-Rosa, Amanda J. C. Brum, Luiza Loebens, Tiago G. Santos, Sonia Z. Cechin","doi":"10.1111/azo.12535","DOIUrl":"https://doi.org/10.1111/azo.12535","url":null,"abstract":"<p><i>Epictia munoai</i> is a small scolecophidian snake from the subtropical region of South America. It inhabits under rocks of preserved environments. Since basic information concerning the biology of this snake remains unknown, we aimed at presenting information on age, reproductive cycle, and daily and annual activity patterns of <i>E. munoai</i> from Southernmost Brazil. Males and females of <i>E. munoai</i> becomes sexually mature from 3 to 4 years of age, and presents a life expectancy of up to 9 or 10 years. The breeding cycle at the individual level is cyclical and discontinuous, and seasonal at the population level, with breed season from late winter to late spring. <i>Epictia munoai</i> is a diurnal snake, active under rocks during the hottest periods of the day, especially during the spring in southern latitudes. Our results provide new and unprecedented information about the natural history of a small species of South American fossorial snake. Information like this is extremely important as it helps to understand the life history of a species, in addition to serving as a basis for studies in areas such as population ecology, historical demography, phylogeography and conservation biology.</p>","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"107 1","pages":"54-66"},"PeriodicalIF":1.3,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145646451","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}
{"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":"<p>Understanding population structure is crucial for predicting species' responses to environmental change and elucidating evolutionary history. This study investigated the population structure of <i>Periophthalmus waltoni</i> 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 <i>P. waltoni</i>'s population structure and evolutionary history, advancing our understanding of its adaptation to the diverse environmental conditions of the Persian Gulf and Oman Sea.</p>","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}
Acta ZoologicaPub Date : 2025-01-07DOI: 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":"<p>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 <i>t</i>-test results revealed that breed had a significant effect (<i>p</i> < .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 (<i>p</i> < .05) on the number of LWF and SYF. The results further displayed that breed had a significant effect (<i>p</i> < .05) on the weight of F2, F3, F4 and F5. The outcomes showed that breed had a significant effect (<i>p</i> < .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 (<i>p</i> < .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.</p>","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}