Zoological Science最新文献

Environmental DNA Reveals Geographic Distributions of Two eel Species, Anguilla japonica and A. marmorata, in Western Kyushu, Japan. 环境 DNA 揭示了日本西九州两种鳗鲡的地理分布。

IF 0.9 4区生物学

Zoological Science Pub Date : 2024-08-01 DOI: 10.2108/zs230103

Yurika Ono, Shimpei Tsuchida, Katsuya Hirasaka, Taijun Myosho, Shingo Fujimoto, Kenichi Shimizu, Mitsuharu Yagi

{"title":"Environmental DNA Reveals Geographic Distributions of Two eel Species, Anguilla japonica and A. marmorata, in Western Kyushu, Japan.","authors":"Yurika Ono, Shimpei Tsuchida, Katsuya Hirasaka, Taijun Myosho, Shingo Fujimoto, Kenichi Shimizu, Mitsuharu Yagi","doi":"10.2108/zs230103","DOIUrl":"https://doi.org/10.2108/zs230103","url":null,"abstract":"Some anguillid eels migrate thousands of kilometers from their spawning grounds, dispersing across vast geographic areas to fresh and brackish water habitats, where they settle and grow. Japanese eels (Anguilla japonica) and giant mottled eels (A. marmorata) are both found in Japan, although their distributions differ, and their exact distributions are poorly known. We assumed that topographic distribution patterns of Japanese and giant mottled eels must differ among and within rivers along the northwest coast of Kyushu, Japan. Environmental DNA (eDNA) analysis was conducted at 87 sites in 23 rivers. Japanese eel eDNA was detected in 19 rivers (82.6%) and that of giant mottled eels was detected in eight (34.8%). We detected giant mottled eel eDNA in five rivers where they were previously unknown. eDNA for Japanese eels was detected at six of nine sites in the north (66.7%), 13 of 23 sites in Omura (56.5%), and 37 of 55 sites in the south (67.3%). In contrast, giant mottled eel eDNA was detected at one of nine sites in the north (11.1%), no sites in Omura, and 15 of 55 sites in the south (27.3%). There was no correlation between eDNA concentrations of the two species at 10 sites in the five rivers where eDNA of both species was detected. These findings suggest differences in the distribution of the two eel species and the northern distributional limit of giant mottled eels in the area facing the East China Sea.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141876160","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

Environment-Mediated Vertical Transmission Fostered Uncoupled Phylogenetic Relationships between Longicorn Beetles and Their Symbionts. 环境介导的垂直传播促进了长角甲虫及其共生体之间的非耦合系统发育关系。

IF 0.9 4区生物学

Zoological Science Pub Date : 2024-08-01 DOI: 10.2108/zs230034

Yasunori Sasakura, Nobuhisa Yuzawa, Junsuke Yamasako, Kazuki Mori, Takeo Horie, Masaru Nonaka

{"title":"Environment-Mediated Vertical Transmission Fostered Uncoupled Phylogenetic Relationships between Longicorn Beetles and Their Symbionts.","authors":"Yasunori Sasakura, Nobuhisa Yuzawa, Junsuke Yamasako, Kazuki Mori, Takeo Horie, Masaru Nonaka","doi":"10.2108/zs230034","DOIUrl":"https://doi.org/10.2108/zs230034","url":null,"abstract":"The Coleoptera Cerambycidae (longicorn beetles) use wood under different states (living healthy, freshly snapped, completely rot, etc.) in a species-specific manner for their larval diet. Larvae of some Cerambycidae groups have mycetomes, accessory organs associated with the midgut that harbor fungal symbiont cells. The symbionts are thought to improve nutrient conditions; however, this has yet to be shown experimentally. To deduce the evolutionary history of this symbiosis, we investigated the characteristics of the mycetomes in the larvae of longicorn beetles collected in Japan. Lepturinae, Necydalinae, and Spondylidinae are the only groups that possess mycetomes, and these three groups' mycetomes and corresponding fungal cells exhibit different characteristics between the groups. However, the phylogenetic relationship of symbiont yeasts does not coincide with that of the corresponding longicorn beetle species, suggesting they have not co-speciated. The imperfect vertical transmission of symbiont yeasts from female to offspring is a mechanism that could accommodate the host-symbiont phylogenetic incongruence. Some Lepturinae species secondarily lost mycetomes. The loss is associated with their diet choice, suggesting that different conditions between feeding habits could have allowed species to discard this organ. We found that symbiont fungi encapsulated in the mycetomes are dispensable for larval growth if sufficient nutrients are given, suggesting that the role of symbiotic fungi could be compensated by the food larvae take. Aegosoma sinicum is a longicorn beetle classified to the subfamily Prioninae, which does not possess mycetomes. However, this species contains a restricted selection of yeast species in the larval gut, suggesting that the symbiosis between longicorn beetles and yeasts emerged before acquiring the mycetomes.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141876161","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

Symbiotic Algae of Acoel Species in the Seto Inland Sea and Symbiont Selectivity in the Hosts. 濑户内海中阿科尔种的共生藻和寄主对共生藻的选择性。

IF 0.9 4区生物学

Zoological Science Pub Date : 2024-08-01 DOI: 10.2108/zs230111

Tomoe Hikosaka-Katayama, Kaede Okabe, Ayumi Mishima, Ayane Matsuura, Kanako Arimoto, Mie Shinohara, Akira Hikosaka

{"title":"Symbiotic Algae of Acoel Species in the Seto Inland Sea and Symbiont Selectivity in the Hosts.","authors":"Tomoe Hikosaka-Katayama, Kaede Okabe, Ayumi Mishima, Ayane Matsuura, Kanako Arimoto, Mie Shinohara, Akira Hikosaka","doi":"10.2108/zs230111","DOIUrl":"https://doi.org/10.2108/zs230111","url":null,"abstract":"Praesagittifera naikaiensis is an acoel flatworm that inhabits the sandy beaches in the intertidal zone of the Seto Inland Sea. This species carries Tetraselmis sp., a green unicellular chlorophyte, as a symbiont in its body, and depends on algal photosynthetic products to survive. However, the eggs of P. naikaiensis contain no symbiotic algae, and juvenile P. naikaiensis acquire symbionts from the surrounding environment through horizontal transfer after hatching, thereby establishing new symbiotic relationships in each generation. Other acoel species, Symsagittifera spp., also inhabit the Seto Inland Sea shores and acquire symbiotic green algae via horizontal transfers. To characterize their symbionts, these acoels were collected from a wide area of the Seto Inland Sea and partial nucleotide sequences of the chloroplast ribulose diphosphate carboxylase large subunit (rbcL) of the symbiotic algae were determined and used for molecular phylogenetic analysis. Symbionts of both P. naikaiensis and Symsagittifera spp. belonged to the genus Tetraselmis but were phylogenetically distant, and both species established symbiotic relationships with different symbionts even when they were sympatric. To test whether each species selects specific algae in the environment for symbiosis, we established algal strains from P. naikaiensis and Symsagittifera sp. symbionts and conducted uptake experiments on aposymbiotic juveniles of P. naikaiensis. The results suggest that symbiotic algae from Symsagittifera could be taken up by P. naikaiensis juveniles, but were unable to establish a normal symbiotic relationship with the juveniles.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141876162","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

Dark Morph of the Oriental Honey-Buzzard (Pernis ptilorhynchus orientalis) is Attributable to Specific MC1R Haplotypes. 东方蜜蜂（Pernis ptilorhynchus orientalis）的深色形态与特定的 MC1R 单倍型有关。

IF 0.9 4区生物学

Zoological Science Pub Date : 2024-08-01 DOI: 10.2108/zs230092

Hirotake Ono, Kazuya Nagai, Hiroyoshi Higuchi

{"title":"Dark Morph of the Oriental Honey-Buzzard (Pernis ptilorhynchus orientalis) is Attributable to Specific MC1R Haplotypes.","authors":"Hirotake Ono, Kazuya Nagai, Hiroyoshi Higuchi","doi":"10.2108/zs230092","DOIUrl":"10.2108/zs230092","url":null,"abstract":"A thorough understanding of the development of complex plumages in birds necessitates the acquisition of genetic data pertaining to the mechanism underlying this phenomenon from various avian species. The oriental honey-buzzard (Pernis ptilorhynchus orientalis), a tropical summer migrant to Northeast Asia, including Japan, exemplifies this aspect owing to the diversity of its ventral coloration and intra-feather barring patterns. However, genetic polymorphism responsible for this diversity has not been identified yet. This study aimed to investigate the link between dark-plumed phenotypes of this subspecies and haplotypes of the melanocortin-1-receptor (MC1R) gene. A draft sequence of MC1R was constructed using next generation sequencing and subsequently amplified using designed polymerase chain reaction (PCR) primers. The genome sequences of 32 honey-buzzard individuals were determined using PCR, and 12 MC1R haplotype sequences were obtained. Among these haplotypes, we found that unique haplotypes with nine non-synonymous substitutions and four or five synonymous substitutions in the coding region had a perfect correlation with the dark-plumed phenotype. The lack of correlation between the genotype of ASIP coding region and plumage phenotype reiterated that the dark morph is attributable to specific MC1R haplotypes. The absence of a correlation between genetic polymorphisms of MC1R and the intra-feather barring patterns, as well as the diversity observed within lighter ground color classes (pale and intermediate), implies the involvement of alternative molecular mechanisms in the manifestation of the aforementioned phenotypes.","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141876159","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

Sperm Size Decreases with Increasing Pheomelanin Pigmentation but Not with the Amount of Glutathione in the Barn Swallow 谷仓燕的精子大小会随着酪氨酸色素的增加而减小，但不会随着谷胱甘肽数量的增加而减小

IF 0.9 4区生物学

Zoological Science Pub Date : 2024-07-11 DOI: 10.2108/zs230120

Masaru Hasegawa, Emi Arai, Hitomi Tanaka, Shosuke Ito, Kazumasa Wakamatsu

引用次数: 0

Development of the Pronotal Explanate Margin, a Novel Evolutionary Trait in Tortoise Beetles 龟甲甲虫的一种新的进化特征--前胸解释缘的发育

IF 0.9 4区生物学

Zoological Science Pub Date : 2024-07-11 DOI: 10.2108/zs240026

Miho Ochiai, Yuta Kurihara, Satoshi Miyazaki

引用次数: 0

Morphological and Molecular Evidence of an Intergeneric Host-Range in Clavisodalis sentifer (Crustacea: Copepoda: Taeniacanthidae) Associated with Diadematid Sea Urchins from the Western Pacific 西太平洋海胆（Clavisodalis sentifer，甲壳纲：桡足目：Taeniacanthidae）属间宿主范围的形态学和分子证据