Zoologischer Anzeiger最新文献

Taxonomic revision of Akela Peckham & Peckham, 1896 (Araneae: Salticidae: Freyina), with insights into secondary spermathecae in Salticidae and coupling pocket homology in Freyina Akela Peckham & Peckham, 1896（蜘蛛目：水蛭科：水蛭科）的分类学修订，对水蛭科的次级精子科和水蛭科的偶联袋同源性有了新的认识

IF 1.3 3区生物学

Zoologischer Anzeiger Pub Date : 2026-07-01 Epub Date: 2026-06-12 DOI: 10.1016/j.jcz.2026.05.011

Gustavo R.S. Ruiz, Kimberly S. Marta, Damián Hagopián, Abel A. Bustamante

引用次数: 0

A first look at the biodiversity of Loricifera from the deep South China Sea 南中国海深海螺的生物多样性

IF 1.3 3区生物学

Zoologischer Anzeiger Pub Date : 2026-07-01 Epub Date: 2026-06-13 DOI: 10.1016/j.jcz.2026.06.001

Lifen Bai, Chunsheng Wang, Xiaogu Wang, Reinhardt Møbjerg Kristensen

{"title":"A first look at the biodiversity of Loricifera from the deep South China Sea","authors":"Lifen Bai, Chunsheng Wang, Xiaogu Wang, Reinhardt Møbjerg Kristensen","doi":"10.1016/j.jcz.2026.06.001","DOIUrl":"10.1016/j.jcz.2026.06.001","url":null,"abstract":"<div><div>The loriciferan fauna of the South China Sea in the western Pacific Ocean is unknown. The present study reports 14 loriciferan specimens collected from depths of 1531–1570 m at five stations in the deep South China Sea. The 14 loriciferan specimens may represent at least 10 undescribed species; however, this possibility needs to be verified by investigating more specimens. Two specimens belong to Nanaloricidae (both <em>Fafnirloricus</em>), eight belong to Pliciloricidae (two <em>Pliciloricus,</em> one <em>Rugiloricus,</em> three <em>Scaberiloricus</em>, and two unidentified genus/genera), one belongs to Urnaloricidae (<em>Urnaloricus</em>), and three could not be identified to the family level.</div><div>Many patches are present all over the thorax, the abdomen and even in certain cases on the introvert and at the bases of the toes of six examined species. Patches on the body surface of three species are connected to muscles. The patches of specimens <em>Scaberiloricus</em> sp. 1 (B6418400040), <em>Scaberiloricus</em> sp. 2 and B6418400048 vary in size from 0.8 to 4.9 μm in length. The patches exhibit three forms: spherical shapes with numerous protrusions, spongy structures, and shell-like structures with numerous protrusions. All the patches contain pores. We speculate that these patches are likely to be sensory organs, possibly involved not only in muscle movement but also in additional unknown sensory functions, but further functional or histological studies are still needed to confirm whether these patches are indeed sensory organs.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"323 ","pages":"Pages 250-270"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148539654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Growth and larval development patterns of two species of dogtooth characins (Characiformes, Cynodontidae) 两种犬齿动物（犬齿动物科）的生长和幼虫发育规律

IF 1.3 3区生物学

Zoologischer Anzeiger Pub Date : 2026-07-01 Epub Date: 2026-06-12 DOI: 10.1016/j.jcz.2026.06.006

Ruineris Almada Cajado, Diego Maia Zacardi, Cleide Carnicer, Tommaso Giarrizzo

{"title":"Growth and larval development patterns of two species of dogtooth characins (Characiformes, Cynodontidae)","authors":"Ruineris Almada Cajado, Diego Maia Zacardi, Cleide Carnicer, Tommaso Giarrizzo","doi":"10.1016/j.jcz.2026.06.006","DOIUrl":"10.1016/j.jcz.2026.06.006","url":null,"abstract":"<div><div>The external morphology of the larvae of <em>Hydrolycus armatus</em> and <em>H. scomberoides</em> (Cynodontidae) is described from taxonomic and morphometric perspectives. A total of 130 larvae of <em>H. armatus</em> (3.81 to 22.08 mm standard length) and 71 larvae of <em>H. scomberoides</em> (3.96 to 15.08 mm standard length) were analyzed. Specimens were collected in the limnetic open-water zone of the Amazon and Araguaia River basins, Brazil. Ontogenetic changes in morphology, pigmentation, fin shape and position, as well as meristic and morphometric characters were examined. Different growth models were tested using Triple Regression Analysis to identify the early developmental pattern of these species. Newly hatched larvae of both species are poorly developed and characterized by an elongated body, pigmentation in the fontanel region, visible gill openings, and a rounded head and snout. After the onset of yolk absorption, the head becomes triangular, the snout pointed, and the mouth large and equipped with extraoral teeth. The eyes are small, the intestine is long (extending beyond half of the body length), and the number of myomeres is high (>47 myomeres). Within the family, larvae can be distinguished by the shape of the swim bladder, the extent of the distal margin of the pectoral-fin membrane, and the position of the dorsal and anal fins. Between the two species, differences are observed in pigmentation pattern and number of pre-anal myomeres. Both species exhibited similar growth patterns, with differential growth rates among body parts across ontogenetic stages, reflecting morphological changes throughout larval development that are associated with life-history traits. Finally, an identification key for Cynodontidae larvae is provided.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"323 ","pages":"Pages 171-184"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148539657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Challenging the castrator paradigm: Mating and fertility in rhizocephalan-infected male shore crabs (Carcinus maenas) 对阉割者范式的挑战：根头菌感染的雄性岸蟹的交配和生育能力

IF 1.3 3区生物学

Zoologischer Anzeiger Pub Date : 2026-07-01 Epub Date: 2026-06-17 DOI: 10.1016/j.jcz.2026.06.003

Henrik Glenner, Pedro S. Freitas, Marius G. Frandsen, Zoran Sargac, Camille Saurel

{"title":"Challenging the castrator paradigm: Mating and fertility in rhizocephalan-infected male shore crabs (Carcinus maenas)","authors":"Henrik Glenner, Pedro S. Freitas, Marius G. Frandsen, Zoran Sargac, Camille Saurel","doi":"10.1016/j.jcz.2026.06.003","DOIUrl":"10.1016/j.jcz.2026.06.003","url":null,"abstract":"<div><div>Parasitic castration by rhizocephalan barnacles is widely assumed to eliminate host reproductive capacity. In male <em>Carcinus maenas</em> infected by <em>Sacculina carcini</em>, the presence of the externa is widely regarded as causing functional reproductive suppression, both behaviourally and physiologically. However, the extent and reversibility of this suppression remain poorly documented.</div><div>Here, we present the results of a series of behavioural and reproductive trials using <em>C. maenas</em> males naturally infected with <em>S. carcini</em>, collected from the Limfjorden, Denmark. In controlled laboratory experiments, we show that a majority of parasitised males, including some with visible adult externae, retain the ability to engage in mating behaviour, including courtship and pre-copulatory embrace of receptive, recently molted females. Mating success followed a predictable size hierarchy in competition trials, indicating that behavioural dominance is not disrupted by parasitism.</div><div>Importantly, dissections revealed that females paired with parasitised males had received spermatophores containing morphologically intact spermatozoa in both examined cases—one from a male with a developing externa and the other from a male two months post-extirpation—providing evidence that fertility is likely retained despite infection.</div><div>These findings suggest that reproductive suppression in <em>S. carcini</em>-infected <em>C. maenas</em> males may be incomplete and context-dependent. We discuss the implications for understanding host–parasite dynamics, potential recovery after parasite removal, and the broader ecological role of parasitised and previously parasitised males in natural crab populations.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"323 ","pages":"Pages 185-192"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148539656","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

Revision of Typhloscolecidae (Annelida, Errantia) with the description of three new Typhloscolex species 标题用三新种记述蝗科（环节动物，蝗目）的订正

IF 1.3 3区生物学

Zoologischer Anzeiger Pub Date : 2026-07-01 Epub Date: 2026-06-19 DOI: 10.1016/j.jcz.2026.06.007

G.D. Kolbasova, V.L. Syomin, S.A. Maslakova, A.V. Mishin, T.N. Molodtsova, N.Yu. Neretin, C.M. Young, T.V. Neretina

{"title":"Revision of Typhloscolecidae (Annelida, Errantia) with the description of three new Typhloscolex species","authors":"G.D. Kolbasova, V.L. Syomin, S.A. Maslakova, A.V. Mishin, T.N. Molodtsova, N.Yu. Neretin, C.M. Young, T.V. Neretina","doi":"10.1016/j.jcz.2026.06.007","DOIUrl":"10.1016/j.jcz.2026.06.007","url":null,"abstract":"<div><div>The holopelagic annelid family Typhloscolecidae is revised based on all available material deposited in the Zoological Museum of Moscow State University comprised of specimens collected from the Arctic, Atlantic, Southern, and Indian Oceans. Based both on the museum collection and available literature, we provide detailed morphological and molecular descriptions for the majority of known typhloscolecid species. The study encompasses two currently known species of the genus <em>Sagitella</em> (<em>Sagitella kowalewskii</em> and <em>Sagitella dubia</em>), four species of <em>Travisiopsis</em> (<em>Travisiopsis coniceps</em>, <em>Travisiopsis lanceolata</em>, <em>Travisiopsis levinseni</em>, <em>Travisiopsis lobifera</em>), and six species of <em>Typhloscolex</em> (<em>Typhloscolex muelleri</em>, <em>Typhloscolex leuckarti</em>, <em>Typhloscolex phyllodes</em>, <em>Typhloscolex robustus</em>, <em>Typhloscolex reibischi</em>, and <em>Typhloscolex keldyschi</em>). In addition, we describe three new species: <em>Typhloscolex grib</em> sp. nov., <em>Typhloscolex uljanini</em> sp. nov., and <em>Typhloscolex apobalopetalon</em> sp. nov. The redescriptions, molecular diagnostics and an updated identification key for the family Typhloscolecidae are provided.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"323 ","pages":"Pages 219-249"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148539653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Water mites as experimental organisms: taxon-dependent starvation resistance under cold conditions 作为实验生物的水螨：在寒冷条件下分类依赖的饥饿抗性

IF 1.3 3区生物学

Zoologischer Anzeiger Pub Date : 2026-07-01 Epub Date: 2026-06-11 DOI: 10.1016/j.jcz.2026.06.005

Antonio G. Valdecasas

{"title":"Water mites as experimental organisms: taxon-dependent starvation resistance under cold conditions","authors":"Antonio G. Valdecasas","doi":"10.1016/j.jcz.2026.06.005","DOIUrl":"10.1016/j.jcz.2026.06.005","url":null,"abstract":"<div><div>Widening the range of organisms available as experimental models contributes to a more comprehensive understanding of the functional and evolutionary diversity of the living world. Water mites (Acari, Hydrachnidia) are globally distributed and highly accessible for experimental work, yet their long-term laboratory maintenance has traditionally been considered challenging. Here, we report that specific water mite taxa can be successfully maintained <em>ex situ</em> for extended periods under cold conditions with minimal logistical requirements. A set of water mite cohorts was sampled from an unpolluted stream in the Spanish Pyrenees. Individuals were kept separately in hermetically sealed microtubes containing native stream water and monitored weekly for 29 weeks. Survival dynamics under absolute fasting, with neither diurnal light cycles nor atmospheric gas exchange, were analyzed using Kaplan–Meier estimators. The results revealed a highly significant divergence in physiological resilience among the studied taxa: individuals of the genus <em>Atractides</em> exhibited a marked sensitivity to starvation (median survival: 7 weeks), whereas the most resilient genera (<em>Torrenticola</em>, <em>Lebertia</em>, and <em>Protzia</em>) showed exceptional endurance, maintaining >95% survival throughout the entire 29-week study. Specific water mite genera are therefore proposed as highly suitable alternative experimental organisms due to their ease of collection, minimal maintenance needs (requiring no feeding, artificial aeration, or specialized flow configurations), and robust performance in longitudinal bioassays.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"323 ","pages":"Pages 166-170"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148539655","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

Taxonomy, distribution and phylogeny of Genus Goniurellia Hendel with description of two new species from India 标题印度龙葵属的分类、分布和系统发育及两新种记述

IF 1.5 3区生物学

Zoologischer Anzeiger Pub Date : 2026-05-01 Epub Date: 2026-03-09 DOI: 10.1016/j.jcz.2026.02.013

Nikhil Khemrajji Hatwar , Karamankodu Jacob David , Elizabeth Morgulis , Mahadevan Raghuraman , Ramasamy Gandhi Gracy , Narayana Srinivasa

引用次数: 0

Homotypic assortative mating is consistent across temporal scales in the spider Mecynogea lemniscata (Araneidae) 同种异型交配在蜘蛛（蛛科）中是一致的。

IF 1.5 3区生物学

Zoologischer Anzeiger Pub Date : 2026-05-01 Epub Date: 2026-04-23 DOI: 10.1016/j.jcz.2026.04.009

Rafael Rios Moura , Gabriel Máximo Xavier , Vítor Campos de Castro , William Dias Silva , Alisson Montanheiro Valentim , Marcelo Oliveira Gonzaga

{"title":"Homotypic assortative mating is consistent across temporal scales in the spider Mecynogea lemniscata (Araneidae)","authors":"Rafael Rios Moura , Gabriel Máximo Xavier , Vítor Campos de Castro , William Dias Silva , Alisson Montanheiro Valentim , Marcelo Oliveira Gonzaga","doi":"10.1016/j.jcz.2026.04.009","DOIUrl":"10.1016/j.jcz.2026.04.009","url":null,"abstract":"<div><div>Identifying patterns of size-assortative mating (SAM) indicates the direction of genetic changes in a population. A reliable method for estimating it in a population is to measure mate assortments within and between breeding seasons¸ as well as describing size variation of males and females between temporal scales to avoid Simpson's paradox. We assessed sexual size dimorphism, the effects of ontogeny, size differences within each sex, the consistency of SAM within and between seasons, and male mate choice in the spider <em>Mecynogea lemniscata</em>. We collected mating pairs in a <em>Eucalyptus</em> plantation across two breeding seasons and in four periods of the second season. We measured body mass and carapace width of spiders. Males matured earlier than females and guarded subadult partners. Although adults were larger and heavier than subadults, ontogeny did not affect SAM. Females were generally heavier than males in the second season but not in first, but mate assortments were random based on body mass in both seasons. Females showed a smaller carapace width in the first season and a larger one than males in the second season. Despite varying size differences between seasons, SAM remained homotypic based on carapace width across seasons and within the second season. Hence, homotypic SAM was consistent across different temporal scales. Male mate choice was not affected by female size. Unlike other species, temporal variation in the size of <em>M. lemniscata</em> spiders did not disrupt SAM, indicating that a consistent SAM can influence evolutionary changes in body size in this population.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"322 ","pages":"Pages 277-285"},"PeriodicalIF":1.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147802670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A revision of the “living fossil” order Raphidioptera (Neuropterida) in Mexico 标题墨西哥蛇翅目“活化石”的修正

IF 1.5 3区生物学

Zoologischer Anzeiger Pub Date : 2026-05-01 Epub Date: 2026-03-02 DOI: 10.1016/j.jcz.2026.02.011

Caleb Califre Martins , Ulrike Aspöck , Horst Aspöck , Atilano Contreras-Ramos

引用次数: 0

Benthic cephalopods (Mollusca) from the Austral Southwest Atlantic 西南大西洋南部底栖头足类动物（软体动物）

IF 1.5 3区生物学

Zoologischer Anzeiger Pub Date : 2026-05-01 Epub Date: 2026-04-03 DOI: 10.1016/j.jcz.2026.04.001

Lucia A. Bonavita , Diego G. Zelaya , Marina Güller

{"title":"Benthic cephalopods (Mollusca) from the Austral Southwest Atlantic","authors":"Lucia A. Bonavita , Diego G. Zelaya , Marina Güller","doi":"10.1016/j.jcz.2026.04.001","DOIUrl":"10.1016/j.jcz.2026.04.001","url":null,"abstract":"<div><div>This contribution provides the first comprehensive study of two species of bobtail squids and nine octopods from the Austral Southwest Atlantic, including the description of a new species: <strong><em>“Muusoctopus” namuncurensis</em> n. sp.</strong> Colour patterns and mantle textures of living specimens prove to be useful characters for distinguishing the studied species. A male of <em>Neorossia jeannae</em> and the ontogenetic variability of <em>“Muusoctopus” longibrachus akambei</em> are described for the first time<em>.</em> The intraspecific radular variability of <em>Enteroctopus megalocyathus</em> and <em>Graneledone macrotyla</em> is clarified. Previous mistakes concerning the type material of <em>Octopus patagonicus</em> (lectotype designated herein)<em>, Benthoctopus magellanicus</em> and <em>Thaumeledone brevis</em> are clarified. <em>G. macrotyla</em> is synonymized with <em>Graneledone yamana</em>, <em>N. jeannae</em> is elevated to full species and <em>Semirossia patagonica</em> is confirmed as valid. Known distributional ranges are extended for <em>E. megalocyathus,</em> “<em>Muusoctopus” eureka</em>, <em>“Muusoctopus” longibrachus akambei, G. macrotyla</em> and <em>S. patagonica</em>, and the deepest record of <em>N. jeannae</em> is reported (785 m). Egg capsules of <em>G. macrotyla</em> are described.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"322 ","pages":"Pages 233-260"},"PeriodicalIF":1.5,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147802667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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