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Reproduction and Sex in the Androdioecious Barnacle Scalpellum scalpellum: Darwin's Model for Studying Reproductive System Evolution. 雌雄异体猪头藤壶的生殖与性别:达尔文研究生殖系统进化的模型。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-04-02 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-10
Jens T Høeg, Niklas Dreyer, Yoichi Yusa
{"title":"Reproduction and Sex in the Androdioecious Barnacle <i>Scalpellum scalpellum</i>: Darwin's Model for Studying Reproductive System Evolution.","authors":"Jens T Høeg, Niklas Dreyer, Yoichi Yusa","doi":"10.6620/ZS.2026.65-10","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-10","url":null,"abstract":"<p><p>Based on recent studies using both field surveys and laboratory experiments, we review a number of central reproductive traits of the androdioecious barnacle <i>Scalpellum scalpellum</i>. For the first time in any scalpellid species, development has been followed from cypris settlement until a mature dwarf male and compared with the early ontogeny of hermaphrodites. Cyprids settled in preformed receptacles on mature hermaphrodites started to deviate structurally from hermaphrodites almost immediately after attachment. After 14 days they had matured into adult dwarf males that do not resemble any stage in hermaphrodite ontogeny. Therefore, <i>S. scalpellum</i> males are not hermaphrodites arrested in development but the result of a much more profound evolutionary history. Settlement experiments showed that all cyprids are capable of settling and developing into hermaphrodites. Development into males happens only in cyprids attached in receptacles on adult hermaphrodites and must therefore be governed by environmental sex determination (ESD), presumably induced by some chemical factor(s) present only in the receptacle area. We observed mating between hermaphrodites and between a hermaphrodite and its dwarf males. Hermaphrodite to hermaphrodite mating resembles that seen in balanomorphan barnacles, except that adjacent specimens often check their environment with their cirri for the presence of a mating partner. Dwarf male mating is by means of a unique penis structure, made almost exclusively of cuticle and extending from inside the male and bending down into the brood chamber of its partner. This male penis is much larger (relatively to body size) than the structurally very different penis of the hermaphrodite individuals. The hermaphrodite recognizes when the dwarf male extends its penis and arrests its cirral motion so as not to damage or disturb its tiny partner. For the adult hermaphrodites we showed that their allocation of resources to male and female functions is in agreement with predictions from sex allocation theory. As predicted, solitary hermaphrodites allocated fewer resources to male function than those settled gregariously, where one or several hermaphrodite partners are within mating distance. The solitary individuals had both a shorter penis and less developed testes than the gregarious ones. As also predicted, solitary hermaphrodites were more likely to carry males than the gregarious ones.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e10"},"PeriodicalIF":1.4,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13143791/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Revised Checklist of Branchiopoda (Crustacea) in Uzbekistan Highlights Existing Blind Spots in the Knowledge of Regional Fauna. 乌兹别克斯坦修订的鳃足类(甲壳类)名录凸显了区域动物群知识存在的盲点。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-04-01 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-07
Ivan A Dadykin, Polina A Volkova, Maqsadjon J Madumarov, Saodatxon O Madumarova, Elena N Ginatullina, Alexey A Kotov
{"title":"Revised Checklist of Branchiopoda (Crustacea) in Uzbekistan Highlights Existing Blind Spots in the Knowledge of Regional Fauna.","authors":"Ivan A Dadykin, Polina A Volkova, Maqsadjon J Madumarov, Saodatxon O Madumarova, Elena N Ginatullina, Alexey A Kotov","doi":"10.6620/ZS.2026.65-07","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-07","url":null,"abstract":"<p><p>After ca. 150 years of faunistic and taxonomic research, the branchiopods (Crustacea: Branchiopoda) of Central Asia still remain one of the poorly studied groups, despite their importance for freshwater ecosystems. Within the region, the most actively investigated country is Uzbekistan, containing a large diversity of water bodies. However, to date a large body of published literature devoted to the local branchiopod fauna lacks critical reviews. Here, we aim to summarize the existing knowledge of Uzbek Branchiopoda based on previous studies and original samples collected in twelve regions of Uzbekistan. Of 47 branchiopod taxa collected in this study, two species-<i>Camptocercus uncinatus</i> Smirnov, 1971 and <i>Ilyocryptus spinifer</i> Herrick, 1882 (Cladocera: Anomopoda)-are new records for the local fauna. Also, we confirm the presence of four more rare taxa in Uzbekistan and provide a list of branchiopod records for each province of the country. With the new records, the list of Branchiopoda in Uzbekistan contains 107 species, which are unequally distributed within the country: Karakalpakstan has the richest fauna (82 species), followed by provinces of northeast Uzbekistan (40 or more taxa), while local faunas of Kashkadarya, Khorezm, Navoiy and Syrdarya Provinces include fewer than 25 taxa each. Such inequality might be due to several reasons, of which research effort seems to be the most significant. Faunistic compositions of the species-rich provinces appear to be uniform and are similar to those of West and South Tajikistan, comprising high proportions of cosmopolitan, boreal and thermophilic south temperate/ tropical taxa. The best studied cladoceran local faunas of the Karakalpakstan and the Fergana valley resemble that of Tajikistan and, to a lesser extent, those of the Mediterranean countries. Thus, these local faunas together form West Eurasian cluster, which fits the biogeographic pattern observed in the northern Palearctic. However, final conclusions about Uzbek Branchiopoda and similarity of the local faunas should not be made to date, as our study highlights a lack of research in several regions, taxonomic groups (Anostraca, Notostraca, Spinicaudata) and particular water body types (temporary pools, montane water bodies). Also, faunistic composition might be distorted by cryptic endemism or extinction of some branchiopod species due to environmental changes. We hope that the presented checklist will encourage further faunistic, taxonomic and phylogeographic research in Uzbekistan.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e7"},"PeriodicalIF":1.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139731/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Erranticosa gen. nov.: a New Genus of Wolf Spiders from East Asia with Notes on its Separation from Lycosa and Hogna (Araneae Lycosidae: Lycosinae). 东亚狼蛛新属(狼蛛目:狼蛛科:狼蛛科)及其与狼蛛的分离。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-04-01 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-12
Francesco Ballarin, Yuri M Marusik, Ren-Chung Cheng, Katsuyuki Eguchi
{"title":"<i>Erranticosa</i> gen. nov.: a New Genus of Wolf Spiders from East Asia with Notes on its Separation from <i>Lycosa</i> and <i>Hogna</i> (Araneae Lycosidae: Lycosinae).","authors":"Francesco Ballarin, Yuri M Marusik, Ren-Chung Cheng, Katsuyuki Eguchi","doi":"10.6620/ZS.2026.65-12","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-12","url":null,"abstract":"<p><p>The taxonomy and systematic position of the Eastern Asian wolf spider <i>Lycosa coelestis</i> L. Koch, 1878 are revised using an integrative approach. Our study highlights distinctive morphological and molecular differences that separate this species from the generotypes of <i>Lycosa</i> Sundevall,1833 and <i>Hogna</i> Simon, 1885, to which <i>L. coelestis</i> was previously assigned. Based on these findings, we establish a new monotypic genus, <i>Erranticosa</i> gen. nov., to accommodate this species, namely <i>E. coelestis</i> comb. nov. We also discuss the results of a preliminary molecular phylogenetic analysis of the subfamily Lycosinae, including <i>Erranticosa</i> gen. nov. Additionally, based on morphological examination of the type material, we reject the synonymy of <i>Lycosa subcoelestis</i> Fox, 1935 with <i>E. coelestis</i> comb. nov., transferring it to <i>Trochosa</i> C.L. Koch, 1847 as a valid full species, and we establish the new combination, <i>i.e.</i>, <i>T. subcoelestis</i> (Fox, 1935) comb. nov. At the same time, we synonymize <i>Foxicosa</i> Roewer, 1960 (type species: <i>Lycosa subcoelestis</i> Fox, 1935), previously considered a junior synonym of <i>Lycosa</i>, with <i>Trochosa</i>. Our findings highlight the need for an integrative taxonomic and systematic revision of Asian lycosid taxa, as many may be overlooked or misclassified.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e12"},"PeriodicalIF":1.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139732/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Comparison of the Reproductive Characters of Six Species of Scalpellid Barnacles. 六种甲壳藤壶生殖特性的比较。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-04-01 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-09
Nanami Hashizoe, Jens T Høeg, Yasunori Kano, Yoichi Yusa
{"title":"Comparison of the Reproductive Characters of Six Species of Scalpellid Barnacles.","authors":"Nanami Hashizoe, Jens T Høeg, Yasunori Kano, Yoichi Yusa","doi":"10.6620/ZS.2026.65-09","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-09","url":null,"abstract":"<p><p>The family Scalpellidae is a large family of barnacles containing ca. 200+ nominal species. These barnacles inhabit a wide range of depths, although most species live in the deep sea. These species are dioecious (with large females and dwarf males) or androdioecious (with large hermaphrodites and dwarf males), with one or more dwarf males settling in a specific location (the receptacle) in the larger individuals. We studied the reproductive ecology of six dioecious scalpellid barnacle species in the deep sea, which differ in size and habitat depth. Intraspecific analyses revealed that there was a positive relationship between female size and egg number in all the species, but no significant relationship existed between female size and egg size. No trade-off was detected between the size and number of eggs in a brood. Moreover, there was a positive relationship between female size and the number of dwarf males in three species that possess receptacles that carry more than one male. On the other hand, interspecific analyses suggested that female size was positively related to egg size, egg number, and the number of dwarf males. Considering the large variety of reproductive traits and the many species in this group, further research is needed to elucidate how reproductive traits have evolved in scalpellids.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e9"},"PeriodicalIF":1.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139730/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Perspective: A Fitness Landscape Perspective on Species Boundary and Gene Flow for Taxonomic Practitioners in the Genomic Era. 视角:基因组时代分类从业者的物种边界和基因流适应度景观视角。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-04-01 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-17
Jen-Pan Huang
{"title":"Perspective: A Fitness Landscape Perspective on Species Boundary and Gene Flow for Taxonomic Practitioners in the Genomic Era.","authors":"Jen-Pan Huang","doi":"10.6620/ZS.2026.65-17","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-17","url":null,"abstract":"<p><p>Speciation can be conceptualized as evolution across dynamic fitness landscapes, where groups of individuals occupy peaks or plateaus that change across space and time. Within such landscapes, gene flows between species can be expected outcomes, which result in the episodic and temporal permeability of species boundaries. Because species recognition and gene flow both arise from the same underlying fitness landscape dynamics, they are emergent, instead of causally linked, properties. Therefore, despite their frequent correlation, studies in systematics should decouple species recognition from the presence or absence of gene flow.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e17"},"PeriodicalIF":1.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139728/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Interaction Between Photoperiod and Gonadal Feedback on cck Expressions in Three-spined Stickleback, Gasterosteus aculeatus. 光周期与性腺反馈对棘鱼ckk表达的相互作用。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-03-25 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-11
Ching Wen Huang, Chia-Hao Chang, Tzu-Yen Liu, Bertil Borg, Yi Ta Shao
{"title":"Interaction Between Photoperiod and Gonadal Feedback on <i>cck</i> Expressions in Three-spined Stickleback, <i>Gasterosteus aculeatus</i>.","authors":"Ching Wen Huang, Chia-Hao Chang, Tzu-Yen Liu, Bertil Borg, Yi Ta Shao","doi":"10.6620/ZS.2026.65-11","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-11","url":null,"abstract":"<p><p>Cholecystokinin (CCK) is a peptide hormone that plays crucial roles not only in the digestive system but also in the central nervous system as a neurotransmitter. Recent research indicate that it is involved in the reproductive endocrine system, inducing the release of follicle-stimulating hormone (FSH) in medaka, <i>Oryzias latipes</i>. The present study tested whether <i>cck</i> expression is involved in the control of maturation in three-spined stickleback (<i>Gasterosteus aculeatus</i>). To that end, castrated and sham-operated males were exposed to short-day (8L:16D) or long-day (16L:8D) photoperiods for 3 or 30 days. Pituitary <i>fsh</i>β was strongly elevated in castrated fish, particularly under short-day conditions, whereas <i>lh</i>β increased only in sham-operated fish after 30 days under long-day conditions. Castration increased hypothalamic <i>cck</i>a and <i>cck</i>b expression under short days, but decreased <i>cck</i>a after long-day exposure for 30 days. Photoperiod influenced whole-brain and hypothalamic <i>cck</i>s expression differently. Whole-brain <i>cck</i>s levels were generally higher under short days and lower under stimulatory long days, whereas these photoperiodic effects were largely absent in the hypothalamus. These findings suggest that hypothalamic <i>cck</i> genes may participate in feedback regulation on the BPG axis of the stickleback; however, FSH secretion and photoperiodic reproductive control likely involve additional factors.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e11"},"PeriodicalIF":1.4,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13058826/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147647211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Review of Calocheiridius Beier & Turk, 1952 (Pseudoscorpiones: Olpiidae) of Iran with Descriptions of Two New Species. 伊朗拟蝎子科(Calocheiridius Beier & Turk, 1952)述评及两新种记述。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-03-20 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-02
Zahra Latifi, Mansour Aliabadian, Omid Mirshamsi
{"title":"Review of <i>Calocheiridius</i> Beier & Turk, 1952 (Pseudoscorpiones: Olpiidae) of Iran with Descriptions of Two New Species.","authors":"Zahra Latifi, Mansour Aliabadian, Omid Mirshamsi","doi":"10.6620/ZS.2026.65-02","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-02","url":null,"abstract":"<p><p>The diversity of <i>Calocheiridius</i> Beier & Turk, 1952 in Iran is still thought to be uncommon; with only two species reported recently: <i>C. centralis</i> (Beier, 1952), and <i>C. iranicus</i> Nassirkhani, 2014. The current research is devoted to representatives of the genus <i>Calocheiridius</i> from Iran, and led to the identification and description of two novel species: <i>Calocheiridius</i> <i>rectilineatus</i> sp. nov. and <i>C. persicus</i> sp. nov. The novel species were differentiated from their relatives using molecular and morphological analyses, based mainly unique morphometric features, variations in the number of setae along tergite I and the posterior end of the carapace and, trichobothrial patterns, among others. Furthermore, these species exhibit a mitochondrial DNA <i>COI</i> K2P genetic distance that varies from 12.7% to 14% when compared to the nearest relative, <i>C. centralis</i>. Phylogenetic analyses utilising the mitochondrial <i>COI</i> gene and nuclear 28S rDNA, and molecular species delimitation methods, further support description of these new species as separate taxonomic entities. An updated interactive identification key for all species of the genus <i>Calocheiridius</i>, created using DELTA software and based on various numeric and multistate characters, is also provided.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e2"},"PeriodicalIF":1.4,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139729/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Two New Sympatric Aquatic Freshwater Crab Species, Megapleonum taishanense sp. nov. and Cantopotamon chixiense sp. nov. (Crustacea: Brachyura: Potamidae), from Taishan, Guangdong, China. 广东台山两新种同域水生淡水蟹,Megapleonum taishanense sp. 11和Cantopotamon chixiense sp. 11(甲壳纲:短尾目:蟹科)。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-03-17 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-14
Chao Huang, Bernhard Bein, Junda Zhao
{"title":"Two New Sympatric Aquatic Freshwater Crab Species, <i>Megapleonum taishanense</i> sp. nov. and <i>Cantopotamon chixiense</i> sp. nov. (Crustacea: Brachyura: Potamidae), from Taishan, Guangdong, China.","authors":"Chao Huang, Bernhard Bein, Junda Zhao","doi":"10.6620/ZS.2026.65-14","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-14","url":null,"abstract":"<p><p>Two new species of freshwater crabs are described from a hillstream in Chixi Town, Taishan City, Guangdong Province, China: <i>Megapleonum taishanense</i> sp. nov. and <i>Cantopotamon chixiense</i> sp. nov. The two new species are sympatric and are similar in size, colour and superficial appearance in the field. Inspection of key morphological characters sets them apart as undescribed species from two different genera. <i>Megapleonum taishanense</i> sp. nov. and <i>Cantopotamon chixiense</i> sp. nov. can immediately be separated from their respective congeners by their unique G1 morphology but also their combination of carapace, maxilliped 3 and male pleon characters. A phylogeny constructed using the mitochondrial <i>COI</i> gene places <i>Cantopotamon chixiense</i> sp. nov. in its own clade as sister to <i>C. yangxiense</i> Huang, Ahyong & Shih 2017 and a previous 16S rRNA gene study has already shown that <i>Megapleonum taishanense</i> sp. nov. represents an independent clade within <i>Megapleonum</i> Huang, Shih & Ahyong 2018, supporting the current taxonomic treatment of both new species.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e14"},"PeriodicalIF":1.4,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13058823/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147647233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Biodiversity and New Records of Subtidal Brachyuran Crabs (Crustacea, Decapoda) from Taiwan. 台湾潮下短爪蟹(甲壳纲,十足纲)的生物多样性及新记录。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-03-17 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-08
Pan-Wen Hsueh, You-Wei Tzeng
{"title":"Biodiversity and New Records of Subtidal Brachyuran Crabs (Crustacea, Decapoda) from Taiwan.","authors":"Pan-Wen Hsueh, You-Wei Tzeng","doi":"10.6620/ZS.2026.65-08","DOIUrl":"https://doi.org/10.6620/ZS.2026.65-08","url":null,"abstract":"<p><p>This study examines subtidal brachyuran crabs collected from the offshore sewage discharge site of the Bali wastewater treatment plant, which serves the great Taipei metropolitan areas in Taiwan. It reports seven taxa of brachyuran crabs from Taiwan: three newly recorded species and four others identified only to genus level as the specimens obtained were either adult but partially damaged or juveniles. These species belong to six families and seven genera, including three new genera recorded for the first time in Taiwan: <i>Ceratocarcinus</i> White, 1847, <i>Mariaplax</i> Rahayu and Ng, 2014, and <i>Xenophthalmus</i> White, 1846. The identified species are: <i>Paradorippe</i> sp. (family Dorippidae H. Milne Edwards, 1837), <i>Mariaplax</i> <i>chenae</i> Rahayu and Ng, 2014 (family Hexapodidae Miers, 1886), <i>Nursia</i> sp. (family Leucosiidae Samouelle, 1819, subfamily Ebaliinae Stimpson, 1871), <i>Seulocia</i> sp. (family Leucosiidae Samouelle, 1819, subfamily Leucosiinae Samouelle, 1819), <i>Pinnotheres</i> sp. (family Pinnotheridae De Haan, 1833), <i>Xenophthalmus</i> <i>pinnotheroides</i> White, 1846 (family Xenophthalmidae Stimpson, 1858), and <i>Ceratocarcinus</i> <i>frontodentata</i> (Shen, Dai and Chen, 1982) (family Pilumnidae Samouelle, 1819). <i>Ceratocarcinus</i> <i>frontodentata</i>, <i>M</i>. <i>chenae</i>, and <i>X</i>. <i>pinnotheroides</i> are reported in Taiwan for the first time.</p>","PeriodicalId":49331,"journal":{"name":"Zoological Studies","volume":"65 ","pages":"e8"},"PeriodicalIF":1.4,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13058824/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147647261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Three New Cryptic Species of the Freshwater Shrimp Genus Caridina (Decapoda: Caridea: Atyidae) from Hong Kong, with Notes on the C. serrata Species Group. 香港淡水虾属三新种(十足目:虾总科:无虾科),并附注于虾属群。
IF 1.4 3区 生物学
Zoological Studies Pub Date : 2026-02-12 eCollection Date: 2026-01-01 DOI: 10.6620/ZS.2026.65-04
Lai Him Chow, Jeffery C F Chan, June Hoi Ching Leung, Ling Ming Tsang
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