Zoologischer Anzeiger最新文献_第5页

Taxonomic novelties within Brazilian pea crab species: a new genus for Pinnixa latissima Coelho, 1997 and reallocation of Pinnixa gracilipes Coelho, 1997 (Pinnotheridae, Pinnixinae) 巴西豌豆蟹的分类学新异：平蟹科（Pinnotheridae, Pinnixa pinatissima Coelho）一新属（1997）和扁蟹科（Pinnotheridae, pinnitiae）的再分配（1997）

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-16 DOI: 10.1016/j.jcz.2025.05.007

Felipe C. Balbino , Ana F. Tamburus , Fernando L. Mantelatto

{"title":"Taxonomic novelties within Brazilian pea crab species: a new genus for Pinnixa latissima Coelho, 1997 and reallocation of Pinnixa gracilipes Coelho, 1997 (Pinnotheridae, Pinnixinae)","authors":"Felipe C. Balbino , Ana F. Tamburus , Fernando L. Mantelatto","doi":"10.1016/j.jcz.2025.05.007","DOIUrl":"10.1016/j.jcz.2025.05.007","url":null,"abstract":"<div><div>Coelho (1997) described three new species of <em>Pinnixa</em> for the Brazilian coast, two of which have remained in the genus until now. Both species, <em>Pinnixa gracilipes</em> and <em>Pinnixa latissima</em>, have never been addressed in taxonomic studies since. Recent phylogenetic and taxonomic studies of the subfamily Pinnixinae have led to new perspectives that resulted in the description of new genera and allocation of some species of <em>Pinnixa</em> to other genera. Given this context, the present study reassesses the taxonomic status of <em>P. gracilipes</em> and <em>P. latissima</em> using morphological data. A new genus <em>Brasilixa</em> <strong>gen. nov.</strong> is formally described and named herein to accommodate <em>P. latissima</em>, which can be distinguished from other pinnixine genera by the relative width of the carapace, the arc-shaped cardiac ridge, the morphology of the third maxilliped and the presence of spines on the basi-ischium of pereopods 4 and 5. <em>Pinnixa gracilipes</em> is reallocated to <em>Rathbunixa</em> based on shared similarities including the well-defined carapace regions, the presence of a triangular elevation on the cardiac region, slender pereopods and similar male first gonopod morphology. A key to genera and species of Pinnixinae of Brazil is also presented.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"317 ","pages":"Pages 116-129"},"PeriodicalIF":1.2,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482434","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

Systematics of the genus Dilta Strand, 1911 (Machilidae) in the Canary Islands (NW Africa, Spain) with comments on the phylogeny of Microcoryphia (Insecta) 加那利群岛（西北非洲，西班牙）Dilta Strand属的系统分类学（马基利亚科）——兼论微毛虫（昆虫科）的系统发育

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-14 DOI: 10.1016/j.jcz.2025.05.005

Iñigo Palacios–Martinez, Yolanda Jiménez-Ruiz, Pau Otero-Ferre, Mario García-París

{"title":"Systematics of the genus Dilta Strand, 1911 (Machilidae) in the Canary Islands (NW Africa, Spain) with comments on the phylogeny of Microcoryphia (Insecta)","authors":"Iñigo Palacios–Martinez, Yolanda Jiménez-Ruiz, Pau Otero-Ferre, Mario García-París","doi":"10.1016/j.jcz.2025.05.005","DOIUrl":"10.1016/j.jcz.2025.05.005","url":null,"abstract":"<div><div>Phylogenetic inferences based on morphological and genetic data often exhibit discrepancies due to evolutionary convergences, complicating the accurate determination of evolutionary relationships. In Microcoryphia, the lack of comprehensive genetic studies has left significant gaps some of which we try to address in this work. We conducted molecular analyses using mitochondrial and nuclear markers on specimens from Morocco, the Iberian Peninsula, and the Canary and Balearic Islands, representing the two known families and 10 genera within the order. During our study, we revised the nomenclature of the studied taxa, and established three new synonymies (<em>Machilis fastuosa</em> Lucas, 1846 = <em>Machilis bimaculata</em> Lucas, 1846 <strong>n. syn.</strong> = <em>Machilis crassicornis</em> Lucas, 1846 <strong>n. syn.</strong> = <em>Machilis italicus</em> Grassi, 1887 <strong>n. syn.</strong>) and a new combination, <em>Dilta fastuosa</em> (Lucas, 1846) <strong>comb. nov.</strong> In the Canary Islands, our sampling led to the discovery of three new species of the genus <em>Dilta</em> Strand, 1911 with morphological and molecular distinctive traits that differentiate them from other congeneric species (<em>Dilta (Budilta) tilosina</em> Palacios-Martínez <em>&</em> García-París <strong>sp. nov.</strong>; <em>Dilta (Budilta) benahoarense</em> Palacios-Martínez <em>&</em> García-París <strong>sp. nov.</strong>; and <em>Dilta (Budilta) islabonita</em> Palacios-Martínez <em>&</em> García-París <strong>sp. nov.</strong>). The phylogenetic analyses herein suggest that a hidden rapid evolutionary radiation of <em>Dilta</em> took place in the Canary Islands archipelago. Ours findings show the necessity for a comprehensive taxonomic review of the family Machilidae, integrating molecular and morphological data to resolve existing inconsistencies and provide a clearer understanding of their evolutionary history.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"317 ","pages":"Pages 1-18"},"PeriodicalIF":1.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089045","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

Three-dimensional (3D) photogrammetric-based geometric morphometric analysis of the skull in the social vole (Cricetidae: Microtus) 基于三维摄影测量的群居田鼠（田鼠科）颅骨几何形态测量学分析

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-11 DOI: 10.1016/j.jcz.2025.05.006

Ahmet Yesari Selçuk , Alaettin Kaya , Haluk Kefelioğlu

{"title":"Three-dimensional (3D) photogrammetric-based geometric morphometric analysis of the skull in the social vole (Cricetidae: Microtus)","authors":"Ahmet Yesari Selçuk , Alaettin Kaya , Haluk Kefelioğlu","doi":"10.1016/j.jcz.2025.05.006","DOIUrl":"10.1016/j.jcz.2025.05.006","url":null,"abstract":"<div><div>Geometric morphometric analysis has significantly advanced the study of size and shape variation of the mammalian skull. In this study, we used photogrammetry to build three-dimensional models of <em>Microtus</em> skulls to investigate the shape variation of five species using the geometric morphometric approach. We hypothesized that three-dimensional (3D) skull shape data would accurately discriminate between closely related species. Canonical analysis of variance revealed a similar level of species classification based on both 2D and 3D shape data. These findings indicate the precision and accuracy of the photogrammetric method (3D geometric morphometric) in morphologically similar and taxonomically problematic groups, such as <em>Microtus</em>. In species with similar diploid chromosome numbers (<em>Microtus guentheri</em>-<em>M. hartingi</em> and <em>Microtus anatolicus</em>-<em>M. schidlovskii</em>) and in groups in which linear morphometric analyses (Discriminant function analysis and MANOVA) could not distinguish between species (<em>Microtus dogramacii</em>, <em>Microtus schidlovskii</em>, and <em>M. guentheri</em>), the photogrammetry-based 3D GM analyses showed a high level of correct classification rates, demonstrated differences between groups in the cluster dendrogram, and showed significant differences in the shape of the skulls.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"317 ","pages":"Pages 19-32"},"PeriodicalIF":1.2,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123311","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

New insights into the comparative retinal microstructure-visual daily activity relationship among three Egyptian snakes: Diurnal Psammophis sibilans and Psammophis schokari, and both diurnal and nocturnal Spalerosophis diadema 三种埃及蛇：白天活动的sibilans和schokari以及白天和夜间活动的Spalerosophis diadema的视网膜显微结构-视觉日常活动关系的新见解

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-01 DOI: 10.1016/j.jcz.2025.05.003

Doaa Gewily , Ramadan Kandyel , Fatma Madkour , Mohamed Abumandour , Om Prakash Choudhary , Aya H. Tantawy , Walaa Shalaby

{"title":"New insights into the comparative retinal microstructure-visual daily activity relationship among three Egyptian snakes: Diurnal Psammophis sibilans and Psammophis schokari, and both diurnal and nocturnal Spalerosophis diadema","authors":"Doaa Gewily , Ramadan Kandyel , Fatma Madkour , Mohamed Abumandour , Om Prakash Choudhary , Aya H. Tantawy , Walaa Shalaby","doi":"10.1016/j.jcz.2025.05.003","DOIUrl":"10.1016/j.jcz.2025.05.003","url":null,"abstract":"<div><h3>Background</h3><div>The retina is adapted to the visual activity of vertebrates, and this study attempts to clarify the retinal morphological features between three snakes with different visual activities.</div></div><div><h3>Methods</h3><div>The retina of three Egyptian snakes of different visual activities (circadian activity)—diurnal <em>Psammophis sibilans</em>, diurnal <em>Psammophis schokari</em>, and frequently diurnal <em>active</em> and <em>little</em> nocturnal active <em>Spalerosophis diadema</em>—have been investigated by light and transmission electron microscopy.</div></div><div><h3>Results</h3><div>The study examined the morphology of photoreceptors in three snakes and their retinal structure to understand their adaptation to different life modes. Our results showed that diurnal snakes have cone-type photoreceptors, while nocturnal snakes have rod-type photoreceptors. The vascular retina consists of two layers: the outer pigmented epithelium and the inner neural layer, which consists of nine layers as described in other snakes. The pigmented epithelium consists of a single cellular layer that extends externally to the photoreceptor layer. The photoreceptor cell layer in <em>P. sibilans</em> comprised single and double cones, while <em>P. schokari</em> and <em>S. diadema</em> had only a single cone, but in <em>P. schokari,</em> this single cone had two types (small and large). The photoreceptor layer in <em>S. diadema</em> is thicker than in <em>P. sibilans</em> and <em>P. schokari</em>. There are a lot of differences between the layer thicknesses of the studied snakes.</div></div><div><h3>Conclusion</h3><div>Our findings revealed that the retinal microstructure in the three snakes was linked to their visual activity.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"316 ","pages":"Pages 309-319"},"PeriodicalIF":1.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069865","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

Tyletelmis Hinton, 1972 (Coleoptera: Elmidae) loses its monotypic status: genus revision, new species, and morphological phylogeny 叶蝉，1972（鞘翅目：叶蝉科）单型地位的丧失：属修订、新种及形态系统发育

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-01 DOI: 10.1016/j.jcz.2025.04.001

André S. Fernandes , Thiago T.S. Polizei , Neusa Hamada

{"title":"Tyletelmis Hinton, 1972 (Coleoptera: Elmidae) loses its monotypic status: genus revision, new species, and morphological phylogeny","authors":"André S. Fernandes , Thiago T.S. Polizei , Neusa Hamada","doi":"10.1016/j.jcz.2025.04.001","DOIUrl":"10.1016/j.jcz.2025.04.001","url":null,"abstract":"<div><div><em>Tyletelmis</em> is currently an exclusive Amazonian genus, known only from its type species <em>Tyletelmis mila</em> Hinton, 1972, and represents one of the last taxa described by the renowned entomologist H. E. Hinton. This genus is one of the 12 remaining monotypic genera of Neotropical elmids and has not been taxonomically studied since its original description. Here, we present a review of <em>Tyletelmis</em>, in which the genus and its type species are redescribed, and four new species from Brazil are described: <em>Tyletelmis assai</em> <strong>sp. nov.</strong>, <em>Tyletelmis pupunha</em> <strong>sp. nov.</strong>, <em>Tyletelmis tucuman</em> <strong>sp. nov.,</strong> and <em>Tyletelmis buriti</em> <strong>sp. nov.</strong> The first three new species occur in the Amazon biome, while the last one occurs in both the Amazon and the Cerrado (central Brazilian savanna) biome. The morphology of the genus is illustrated and described in detail for the first time. Our morphological phylogenetic analysis recovered <em>Tyletelmis</em> as monophyletic, and the relationships among its species are discussed. A diagnosis and a phylogeny-based species key are provided, along with a map showing their known distribution.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"316 ","pages":"Pages 218-243"},"PeriodicalIF":1.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922967","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

Morphological and molecular analysis of four indicator species of Chironomus (Chironominae) larvae from Korea with morphological identification trait on Mouth part 四种具有口部形态鉴定特征的朝鲜手摇蝇幼虫的形态与分子分析

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-01 DOI: 10.1016/j.jcz.2025.05.004

Hyunsu Yoo , Jae-Won Park , T.Y. Suman , Ihn-Sil Kwak

{"title":"Morphological and molecular analysis of four indicator species of Chironomus (Chironominae) larvae from Korea with morphological identification trait on Mouth part","authors":"Hyunsu Yoo , Jae-Won Park , T.Y. Suman , Ihn-Sil Kwak","doi":"10.1016/j.jcz.2025.05.004","DOIUrl":"10.1016/j.jcz.2025.05.004","url":null,"abstract":"<div><div>Chironomid larvae are important bioindicators of freshwater ecosystems and health, but their morphological similarities often hinder species-level identification. This study employed a combined morphological and molecular approach to differentiate four common <em>Chironomus</em> species: <em>Chironomus flaviplumus</em>, <em>Chironomus dorsalis</em>, <em>Chironomus nipponensis</em>, and <em>Chironomus plumosus</em>. Morphological analysis revealed distinct head appendage features: <em>C. dorsalis</em> possesses unique mentum lateral teeth alignment, while <em>C. flaviplumus</em> and <em>C. nipponensis</em> share a distinct mandible type, and <em>C. flaviplumus</em> and <em>C. plumosus</em> have a unique pecten-epipharyngis tooth type. Phylogenetic Bayesian inference and molecular data produced a divided clade for each species group, confirming their distinct evolutionary lineagesPairwise genetics distances revealed ranges similar to previous intra- and inter-specific variation research, further supporting species delimitation. This study demonstrates the utility of combining morphological and molecular methods for accurate species identification. It paves the way for developing a pictorial key for <em>Chironomus</em> species, facilitating more precise biomonitoring of freshwater ecosystems.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"316 ","pages":"Pages 284-297"},"PeriodicalIF":1.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942577","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

Detailed taxonomy and morphological analyses of two key ostracod species from Patagonia, Argentina: distribution and implications for paleoenvironmental reconstructions 阿根廷巴塔哥尼亚两种介形类的详细分类和形态分析：分布及其古环境重建意义

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-01 DOI: 10.1016/j.jcz.2025.05.001

Alejandra P. Pérez, Corina Coviaga, Lorena Ramos, Pablo Alvear, Gabriela Cusminsky

{"title":"Detailed taxonomy and morphological analyses of two key ostracod species from Patagonia, Argentina: distribution and implications for paleoenvironmental reconstructions","authors":"Alejandra P. Pérez, Corina Coviaga, Lorena Ramos, Pablo Alvear, Gabriela Cusminsky","doi":"10.1016/j.jcz.2025.05.001","DOIUrl":"10.1016/j.jcz.2025.05.001","url":null,"abstract":"<div><div><em>Limnocythere rionegroensis and Limnocythere patagonica</em> are among the most widely distributed ostracod species in Patagonia, Argentina, and are commonly used as proxies in paleoenvironmental reconstructions. Despite their relevance, a taxonomic revision was necessary due to the lack of detailed morphological descriptions. Here, we provide the first comprehensive anatomical characterization of the soft parts of both species. Our findings also underscore the diagnostic value of female genital morphology for ostracod species identification. We evaluate intra- and interspecific morphological variability across multiple populations, documenting size variation in both species and ornamentation differences in <em>L. rionegroensis</em>. Morphometric and anatomical analyses confirm that these variations fall within the range of intraspecific variability. We also explore the environmental preferences, geographic distributions, and significance of these taxa as climate indicators. Both species exhibit broad distributions across northern and southern Patagonia. Although they rarely co-occur in modern or recent assemblages, they are frequently found together in the sedimentary record, suggesting that limited coexistence may result from narrow environmental tolerances rather than geographic isolation. Our results clarify the taxonomic status and ensure the nomenclatural stability of both species. By integrating taxonomic, morphometric, environmental, and geographic data from numerous populations, this study improves the accuracy and reliability of paleoenvironmental reconstructions in Patagonia—a key region for understanding Holocene climate dynamics in the Southern Hemisphere.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"316 ","pages":"Pages 320-336"},"PeriodicalIF":1.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084754","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

The rise of a Titan: a new species of the giant Titanolebias killifishes, and its phylogeny (Cyprinodontiformes: Rivulidae) 泰坦的崛起：巨型泰坦鲨的新种及其系统发育（鲤齿目：鲤科）

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-01 DOI: 10.1016/j.jcz.2025.04.009

Felipe Alonso , Guillermo Enrique Terán , Wilson Sebastián Serra Alanís , Marcos Martin Waldbillig , Martin Miguel Montes , Baltazar Bugeau , Jorge Adrian Barneche , Marina Ibañez Shimabukuro , Francisco González Táboas , Malena Maroli , Matías Jesús Almeida

{"title":"The rise of a Titan: a new species of the giant Titanolebias killifishes, and its phylogeny (Cyprinodontiformes: Rivulidae)","authors":"Felipe Alonso , Guillermo Enrique Terán , Wilson Sebastián Serra Alanís , Marcos Martin Waldbillig , Martin Miguel Montes , Baltazar Bugeau , Jorge Adrian Barneche , Marina Ibañez Shimabukuro , Francisco González Táboas , Malena Maroli , Matías Jesús Almeida","doi":"10.1016/j.jcz.2025.04.009","DOIUrl":"10.1016/j.jcz.2025.04.009","url":null,"abstract":"<div><div>The genus <em>Titanolebias</em> comprises the largest-bodied seasonal killifishes, inhabiting temporary wetlands of the La Plata Basin and adjacent areas in South America. Here, we describe a new species from the Eastern Chacoan region, representing the first record of the genus in this area, providing important biogeographic and evolutionary insights. Phylogenetic analyses confirm the monophyly of <em>Titanolebias</em>, placing <em>Titanolebias monstrosus</em> as the sister species to the remaining species of the genus and recovering the new species as sister to a clade composed of <em>Titanolebias prognathus</em>, <em>Titanolebias elongatus</em>, and <em>Titanolebias cheradophilus</em>. <em>Titanolebias</em> species, exhibits reduced sexual dimorphism, potentially associated with a trophic shift toward larger prey in the origin of this genus and presents several potential cases of aggressive mimicry. <em>Megalebias</em> genus represents a case of convergent evolution towards ichthyophagy with <em>Titanolebias</em>. Morphological analyses reveal that the new species present the diagnostic characters of the genus <em>Titanolebias</em> and can be distinguished by its unique coloration and other morphological traits. Behavioral and ecological data are also provided. Despite its restricted distribution and the vulnerability of ephemeral wetlands to habitat loss, the species is found within a National Park. This discovery provides valuable insights into convergent evolution linked to trophic shifts and contributes to the understanding of the evolution, phylogeny, ecology, and biogeography of Neotropical fishes, offering new avenues for future research and conservation policies for this threatened group of fishes.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"316 ","pages":"Pages 253-265"},"PeriodicalIF":1.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922969","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

Ontogenetic characterization of the secondary sexual characters of Penaeus schmitti Burkenroad, 1936 and Penaeus vannamei Boone, 1931 (Decapoda: Penaeidae) 1936年schmitti Burkenroad对虾和1931年vanannamei Boone对虾第二性性状的个体发生特征（十足目：对虾科）

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-01 DOI: 10.1016/j.jcz.2025.04.008

Alex Barbosa de Moraes , Daniele Cosme Soares de Moraes , Allysson Pontes Pinheiro , Fúlvio Aurélio de Morais Freire

{"title":"Ontogenetic characterization of the secondary sexual characters of Penaeus schmitti Burkenroad, 1936 and Penaeus vannamei Boone, 1931 (Decapoda: Penaeidae)","authors":"Alex Barbosa de Moraes , Daniele Cosme Soares de Moraes , Allysson Pontes Pinheiro , Fúlvio Aurélio de Morais Freire","doi":"10.1016/j.jcz.2025.04.008","DOIUrl":"10.1016/j.jcz.2025.04.008","url":null,"abstract":"<div><div>Secondary sexual characters are commonly used in taxonomic studies of penaeid shrimp, as these structures are the main distinguishing features between species. However, there are few studies on the ontogenetic development of these structures, and most of them describe only a single developmental stage. The ontogenetic comparison of these structures may be particularly useful for accurately assessing the biological invasion process of the exotic species <em>Penaeus vannamei</em> in the central-western South Atlantic, given the difficulty of distinguishing it from its natural congener <em>Penaeus schmitti</em> at juvenile stages. To fill this gap, here we describe the morphology of secondary sexual characters in <em>P. vannamei</em> and <em>P. schmitti</em> along the ontogeny. We confirmed the efficiency of these structures to discriminate them at different ontogenetic stages. Our results show that the structures of secondary sexual characters in juvenile shrimp are different from those in adults, but nevertheless, sets of characters in both the thelycum and the petasma allow a successful distinction between the studied species at different ontogenetic stages. Our results also support the hypothesis that endopodite fusion may not be the final step in male sexual morphological development. Our research may facilitate the assessment of the establishment process of <em>P. vannamei</em> along the American Atlantic coastline, a critical step in monitoring and controlling the spread of alien species. In addition, these results may serve as a baseline for future studies on the reproductive biology and development of penaeid shrimp.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"316 ","pages":"Pages 244-252"},"PeriodicalIF":1.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922968","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

To be or not to be, that is the question for the nature and proper name for a pair of anterior skull bones in species of the Rhinella granulosa group (Anura: Bufonidae) 生存还是毁灭，这是犀牛群（无尾目：蟾蜍科）中一对前颅骨的性质和正确名称的问题。

IF 1.2 3区生物学

Zoologischer Anzeiger Pub Date : 2025-05-01 DOI: 10.1016/j.jcz.2025.04.011

Marcelo Batista , Gabriel Limp , Gustavo Colaço , Sara Caldas Gonçalves de Oliveira , Katrine Paiva , Marcos Colaço , Regina Cély Barroso , Helio Ricardo da Silva

{"title":"To be or not to be, that is the question for the nature and proper name for a pair of anterior skull bones in species of the Rhinella granulosa group (Anura: Bufonidae)","authors":"Marcelo Batista , Gabriel Limp , Gustavo Colaço , Sara Caldas Gonçalves de Oliveira , Katrine Paiva , Marcos Colaço , Regina Cély Barroso , Helio Ricardo da Silva","doi":"10.1016/j.jcz.2025.04.011","DOIUrl":"10.1016/j.jcz.2025.04.011","url":null,"abstract":"<div><div>Herein we reevaluate the homology and proper name of a set of skull bones in bufonid toads of the <em>Rhinella granulosa</em> species group. Since 2000 these bones have been called prenasals, but a recent publication proposed these bones to be hypertrophied septomaxillae. The first suggestion that these elements represented a new bone in the skull of these toads appeared in the early 1970's, but a formal description and naming did not appear until 1982. We gathered new observations, based primarily on μCT images, of 6 of the 12 known species in the group and present a reinterpretation and alternative description. Although dealing with a single bone present in the skull of a small group of South American toads, for which evidence of monophyly is abundant, may seem unimportant, the relevance of such description may go beyond systematics. Inferring well-based morphological homologies of structures is fundamental for an appropriate understanding of the roles of such structure in the evolution of the group and, consequently, function. In these toads, the area anterior to the nares comprises two bones that, early in development, fuse to the paired septomaxilla, forming an element that protrudes anteriorly to form the distinctive rostral profile of these species. Here we present a redescription of these bones, reevaluate their uniqueness for this group of toads, and discuss the most appropriate name for this element.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"316 ","pages":"Pages 266-274"},"PeriodicalIF":1.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927483","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}

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