Acta Zoologica最新文献_第8页

Orexin-A and orexin-B are differently localized in the pars nervosa and pars distalis of the white-spotted conger and Japanese eel pituitaries 食欲素-A和食欲素-B在白斑鳗鱼和日本鳗鱼垂体的神经部和远侧部的定位不同

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-10-11 DOI: 10.1111/azo.12442

Hirohumi Suzuki, Toshiharu Yamamoto

引用次数: 0

Microanatomy of the digestive tract and accessory organs of the Japanese flathead (Inegocia japonica Cuvier, 1829) (Scorpaeniformes, Platycephalidae) 日本扁头虫消化道和附属器官的显微解剖（日本扁尾虫，1829）（Scorpeaformes，扁头虫科）

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-10-07 DOI: 10.1111/azo.12441

Archig Jeamah, Chanyut Sudtongkong, Anan Kenthao, Supapong Imsonpang, Kitipong Angsujinda, Natthawut Charoenphon, Anjaree Inchan, Piyamat Kongtueng, Tappadit Mitparian, Sinlapachai Senarat

{"title":"Microanatomy of the digestive tract and accessory organs of the Japanese flathead (Inegocia japonica Cuvier, 1829) (Scorpaeniformes, Platycephalidae)","authors":"Archig Jeamah, Chanyut Sudtongkong, Anan Kenthao, Supapong Imsonpang, Kitipong Angsujinda, Natthawut Charoenphon, Anjaree Inchan, Piyamat Kongtueng, Tappadit Mitparian, Sinlapachai Senarat","doi":"10.1111/azo.12441","DOIUrl":"https://doi.org/10.1111/azo.12441","url":null,"abstract":"The Japanese flathead, Inegocia japonica Cuvier, 1829 is a commercially important fish in small-scale coastal fisheries in Thailand; however, an explanation of its digestive biology is missing. This study describes the digestive tract and accessory organs of I. japonica, using morphological and histological methods. The fish (10 individual fish, 24.5 ± 0.98 cm in total length) were obtained from Libong Island, Thailand. Integrated morphological and histological data showed that the digestive tract was composed of oesophagus, stomach, pyloric caeca and intestine, with accessory organs. All digestive tracts consisted of four layers, including mucosa, submucosa, muscularis and serosa. Two stomach regions were identified (cardiac and pyloric stomachs). Several clusters of gastric glands were identified in the cardiac stomach. Each gland was a unicellular structure. The apical surface of this gland contained the vacuolar cell. The intestine was lined with a simple columnar structure with goblet cells that was similar to pyloric caecum. Goblet cells were rare in the anterior intestine, in contrast to the posterior intestine where goblet cells were abundant. The numerous of hepatocyte was mostly observed in the liver, whereas an exocrine acinar cell of pancreas was also identified. The results of our observations provided the first information of the digestive tract of I. japonica and can be applied to advanced study, such as physiology and histopathology.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 4","pages":"575-585"},"PeriodicalIF":1.2,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50124382","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

Thermal biology and locomotor performance of the Andean lizard Liolaemus fitzgeraldi (Liolaemidae) in Argentina 阿根廷安第斯蜥蜴Liolaemus fitzgeraldi（Liolaemidae）的热生物学和运动性能

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-09-26 DOI: 10.1111/azo.12440

Franco M. Valdez Ovallez, Rodrigo Gómez Alés, Vanesa Astudillo, Mariela Córdoba, Gustavo Fava, Rodrigo Acosta, Graciela Blanco, José Villavicencio, Juan Carlos Acosta

{"title":"Thermal biology and locomotor performance of the Andean lizard Liolaemus fitzgeraldi (Liolaemidae) in Argentina","authors":"Franco M. Valdez Ovallez, Rodrigo Gómez Alés, Vanesa Astudillo, Mariela Córdoba, Gustavo Fava, Rodrigo Acosta, Graciela Blanco, José Villavicencio, Juan Carlos Acosta","doi":"10.1111/azo.12440","DOIUrl":"https://doi.org/10.1111/azo.12440","url":null,"abstract":"Ectotherms thermoregulate to maintain their body temperature within the optimal range needed for performing vital functions. The effect of climate change on lizards has been studied as regards the sensitivity of locomotor performance to environmental temperatures. We studied thermoregulatory efficiency and locomotor performance for Liolaemus fitzgeraldi in the Central Andes of Argentina. We determined body temperature, micro-environmental temperatures and operative temperatures in the field. In the laboratory, we measured preferred temperatures and calculated the index of thermoregulatory efficiency. We estimated the thermal sensitivity of locomotion by measuring sprint speed (initial velocity and long sprint) and endurance at five different body temperatures. Body temperature was not associated with either micro-environmental temperature, nor did it show differences with preferred temperatures. Thermoregulatory efficiency was moderate (0.61). Initial velocity and long sprint trials showed differences at different temperatures; however, endurance did not. Moreover, the optimal temperatures for the performance trials showed no significant differences among themselves. We conclude that Liolaemus fitzgeraldi has thermal sensitivity in locomotor performance with respect to body temperature and that it is an eurythermic lizard that experiences a large variation in body temperature and that has thermal flexibility in the cold.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 4","pages":"561-574"},"PeriodicalIF":1.2,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50145094","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

Development of the dorsal and anal fin in Kneria stappersii (Otomorpha: Gonorynchiformes) 葡萄Kneria stappersii背鳍和臀鳍的发育（Otomorpha：Gonorynchiformes）

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-09-21 DOI: 10.1111/azo.12439

Ann-Katrin Koch, Timo Moritz, Philipp Thieme

引用次数: 1

Retinal ganglion cell topography and spatial resolution in the smelt Hypomesus japonicus (Brevoort, 1856) 日本海鳗视网膜神经节细胞的地形图和空间分辨率（Brevoort，1856）

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-09-04 DOI: 10.1111/azo.12438

Sergei Kondrashev, Igor Pushchin, Svetlana Gatilova, Yaroslav Kamenev

{"title":"Retinal ganglion cell topography and spatial resolution in the smelt Hypomesus japonicus (Brevoort, 1856)","authors":"Sergei Kondrashev, Igor Pushchin, Svetlana Gatilova, Yaroslav Kamenev","doi":"10.1111/azo.12438","DOIUrl":"https://doi.org/10.1111/azo.12438","url":null,"abstract":"The present study deals with the topography of retinal ganglion cells (GCs) and spatial resolution in the smelt Hypomesus japonicus. The eyes and retinae were examined by light microscopy and computerized tomography. DAPI labelling was used to visualize cell nuclei in the ganglion cell and inner plexiform layers. Two zones of increased GC density in the nasal and temporal retina were bridged by a horizontal streak with the GC density ranging from 5600 to 8000 cells/mm2. The maximum cell density (area retinae temporalis) ranged from 9492 to 14,112 cells/mm2, and the total number of GCs varied from 286 x 103 to 326 x 103 cells in three individuals. The theoretical anatomical spatial resolution (the anatomical estimate of the upper limit of visual acuity) was minimum in the ventral periphery (smaller fish, 1.43 cpd; larger fish, 1.37 cpd) and maximum in area retinae temporalis (smaller fish, 2.83 cpd; larger fish, 2.41 cpd). The relatively high density of GCs and presence of the horizontal streak and area retinae temporalis in the H. japonicus are consistent with its highly visual behaviour. The present findings contribute to better understanding of the factors affecting the topography of retinal ganglion cells and mechanisms of visual adaptation in fish.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 4","pages":"552-560"},"PeriodicalIF":1.2,"publicationDate":"2022-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50121028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sex dimorphism and evidence of sexually selected traits: A case study on the killifish Aphaniops stoliczkanus (Day, 1872) 性别二型性和性选择特征的证据：以斯托利茨卡纳斯（Aphaniops stoliczkanus，Day，1872）为例

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-08-21 DOI: 10.1111/azo.12436

Andrea Herbert Mainero, Saud M. Al-Jufaili, Laith Jawad, Bettina Reichenbacher

{"title":"Sex dimorphism and evidence of sexually selected traits: A case study on the killifish Aphaniops stoliczkanus (Day, 1872)","authors":"Andrea Herbert Mainero, Saud M. Al-Jufaili, Laith Jawad, Bettina Reichenbacher","doi":"10.1111/azo.12436","DOIUrl":"https://doi.org/10.1111/azo.12436","url":null,"abstract":"Sex dimorphism is found in many organisms and is an important source of intraspecific variation. Among freshwater fishes, all members of the Aphaniidae (killifishes, Cyprinodontiformes) are known for their pronounced sex dimorphism, and it has been proposed that sexual selection has played a role in their diversification. However, few studies have assessed their sex dimorphism in detail. Here, we use Aphaniops stoliczkanus (Day, 1872) to analyse morphological variability within and between sexes and within the total sample using statistical analyses of body morphometry, meristic traits and otolith data. We found that sex dimorphism (i) is significant in many body morphometric variables, but (almost) absent in meristic traits and otolith morphometry, (ii) is most marked in anal- and dorsal-fin lengths (larger in males), and in anal- and dorsal-fin positions (more anteriorly positioned in males) and (iii) does not alter the overall variance of the population unless the character concerned is highly divergent. Our data also suggest that anal- and dorsal-fin lengths in males of A. stoliczkanus are sexually selected traits. Together with literature data, this reinforces the idea that sexual selection plays a role in the diversification of aphaniid species. Our results are also relevant to work on fossils, in which morphological variability is often difficult to interpret.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 3","pages":"473-487"},"PeriodicalIF":1.2,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/azo.12436","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50152939","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

Integrated morphometric and molecular analyses indicate three male morphotypes in the freshwater prawn Macrobrachium olfersii (Decapoda, Palaemonidae) along the Brazilian neotropical region 综合形态计量学和分子分析表明，巴西新热带地区淡水虾Macrobrachium olferii（十足目，Palaemonidae）有三种雄性形态类型

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-08-20 DOI: 10.1111/azo.12437

Natália Rossi, João Alberto Farinelli Pantaleão, Fernando L. Mantelatto

{"title":"Integrated morphometric and molecular analyses indicate three male morphotypes in the freshwater prawn Macrobrachium olfersii (Decapoda, Palaemonidae) along the Brazilian neotropical region","authors":"Natália Rossi, João Alberto Farinelli Pantaleão, Fernando L. Mantelatto","doi":"10.1111/azo.12437","DOIUrl":"https://doi.org/10.1111/azo.12437","url":null,"abstract":"Males of Macrobrachium olfersii have a large cheliped (second pereiopod) with individual variations in shape and ornamentation, and they vary in size within and between populations. Some misidentification or doubts about taxonomic validity occur due to this morphological variability throughout their geographic distribution. We carried out a morphometric analysis to detect specific patterns and the potential occurrence of morphotypes in M. olfersii from different populations. Our data set included 52 females and 109 males collected in the Neotropical region, between the north and south limits of Brazilian territory, in coastal rivers from the states of Rio Grande do Norte, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná and Santa Catarina. Body measurements were size standardized by allometric methods and explored by the principal component analysis (PCA) and non-hierarchical analysis of K-means clustering and canonical variate analysis (CVA). Our results suggested three distinct morphological groups (morphotypes) only for males in M. olfersii. Furthermore, the confirmation of monophyly of the different populations of M. olfersii was accomplished by sequences of 16S rDNA. Additional studies about relative growth in other populations and the analysis of the entire ontogenetic development of males in the laboratory will be important to complement the knowledge about morphotypes in this species.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 4","pages":"538-551"},"PeriodicalIF":1.2,"publicationDate":"2022-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50138547","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: 3

Life history and neonate behaviour of the new river crayfish Cambarus chasmodactylus James 1966 (Decapoda: Astacoidea: Cambaridae) from the central portion of the species range 来自该物种范围中心部分的新河小龙虾Cambarus diversiodactylus James 1966（十足目：虾总科：Cambaridae）的生活史和新生行为

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-08-09 DOI: 10.1111/azo.12435

Zackary A. Graham, Zachary J. Loughman

{"title":"Life history and neonate behaviour of the new river crayfish Cambarus chasmodactylus James 1966 (Decapoda: Astacoidea: Cambaridae) from the central portion of the species range","authors":"Zackary A. Graham, Zachary J. Loughman","doi":"10.1111/azo.12435","DOIUrl":"https://doi.org/10.1111/azo.12435","url":null,"abstract":"We studied the life history of the New River Crayfish, Cambarus chasmodactylus in Anthony, Creek, West Virginia during an entire activity season—from May 2011 through October 2011. We observed two mass moulting events; one occurred in May, whereas the other occurred in September. Most males within this population moulted from Form I (i.e. reproductive form) to Form II (i.e. non-reproductive form) in May and then later returned to Form I after a September moulting event. We collected females with active glair glands from May to June, with oviposition occurring from July to August. Fecundity was high and weakly correlated with body size. Egg counts of attached eggs/young in ovigerous females ranged from 41 to 281, with an average of 168. Additionally, from June to October, we dissected a subset of females to determine the monthly gonadal development in females with and without active glair glands. Lastly, in the laboratory, we observed 4th instar neonate crayfishes repeatedly “drifting” between females. We speculate on the relevance of this drifting behaviour and propose future studies to investigate this phenomenon. Our study provides the first comprehensive understanding of the life history of C. chasmodactylus.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 4","pages":"526-537"},"PeriodicalIF":1.2,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50125306","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: 1

Morphological description of early zoeal stages of the snapping shrimp Alpheus buckupi (Caridea: Alpheidae) reared in the laboratory 实验室饲养的跳虾Alpheus buckupi（Caridea:Alpheidae）早期幼体的形态学描述

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-07-21 DOI: 10.1111/azo.12434

Régis Augusto Pescinelli, Nádia de Moraes Sanches, Rogerio Caetano Costa

{"title":"Morphological description of early zoeal stages of the snapping shrimp Alpheus buckupi (Caridea: Alpheidae) reared in the laboratory","authors":"Régis Augusto Pescinelli, Nádia de Moraes Sanches, Rogerio Caetano Costa","doi":"10.1111/azo.12434","DOIUrl":"https://doi.org/10.1111/azo.12434","url":null,"abstract":"Larval information plays an important role in life history and population dynamics studies, as well as in phylogenetic and systematic ones. The early zoeal stages (zoea I, II and III) of the snapping shrimp Alpheus buckupi were described and illustrated based on laboratory-hatched larvae from parental females sampled in Cananéia, São Paulo State, Brazil. The morphological characters of the species were compared with descriptions of other Alpheus species with a known first zoeal stage. The first zoeal stage of this species can be separated from the first zoeal stage described for the other 26 species using the following combination of characteristics: basial endite of maxillule with 2 stout spines (distal one with two rows of spinules) and 2 small plumose setae; basial endite of maxilla bilobed, with 3 and 4 simple setae on proximal and distal lobe, respectively, and five (3 strong and 2 slender) simple setae arranged (2 + 2 + 1) on the basis of first maxilliped. The substantial progress in larval knowledge is fundamental to areas such as ecology and will allow us to better understand the distribution of different early life stages of Alpheus species in the meroplankton community.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 4","pages":"516-525"},"PeriodicalIF":1.2,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50139739","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: 1

Ovarian maturation of Penaeus subtilis (Decapoda: Penaeidae): A new insight to describe oocyte development and somatic structures 枯草对虾的卵巢成熟：描述卵母细胞发育和体细胞结构的新见解

IF 1.2 4区生物学

Acta Zoologica Pub Date : 2022-07-11 DOI: 10.1111/azo.12433

Cecília Craveiro, Roberta Soares, Hildemário Castro-Neto, Emanuell F. Silva, Andrey Soares, Paulo G. V. de Oliveira, Evelyn Gonzalez, Silvio Peixoto

{"title":"Ovarian maturation of Penaeus subtilis (Decapoda: Penaeidae): A new insight to describe oocyte development and somatic structures","authors":"Cecília Craveiro, Roberta Soares, Hildemário Castro-Neto, Emanuell F. Silva, Andrey Soares, Paulo G. V. de Oliveira, Evelyn Gonzalez, Silvio Peixoto","doi":"10.1111/azo.12433","DOIUrl":"https://doi.org/10.1111/azo.12433","url":null,"abstract":"We observed the presence of follicular cells (FC) in the ovaries of Penaeus subtilis (n = 1198), which led us to classify the development of germ cells into six phases: oogonia, previtellogenic oocytes, primary and secondary vitellogenic oocytes, mature oocytes and atretic oocytes. The FC changes their shape according to the development of germ cells and showed a different distribution along the ovary, which allowed differentiating vitellogenic oocytes into primary and secondary. We also observed that the postovulatory follicles (POF) are composed of follicular cells. The presence of POF in penaeids ovaries is rarely reported, but allows the differentiation between spent and resting stages, commonly grouped in reproductive biology research. Furthermore, observation of ovarian lining was useful to differentiate immature females from females that had spawned at least once. Thus, ovarian development was classified into six stages: immature, early developing, advanced developing, ripe, spent and resting. The distribution and shape variations of FC, ovarian lining features and presence of POF were considered crucial for the classification of ovarian maturation stages. The methods developed here may improve estimates of their reproductive cycle, size at first maturity and spawning season, which are important variables in future studies of the reproductive dynamics.","PeriodicalId":50945,"journal":{"name":"Acta Zoologica","volume":"104 4","pages":"506-515"},"PeriodicalIF":1.2,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50149451","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: 2