Molluscan Research最新文献_第9页

Generation of large mitochondrial and nuclear nucleotide sequences and phylogenetic analyses using high-throughput short-read datasets for endangered Placostylinae snails of the southwest Pacific 使用高通量短读数据集生成西南太平洋濒危扁螺的大线粒体和核苷酸序列以及系统发育分析

IF 1 4区生物学

Molluscan Research Pub Date : 2021-07-03 DOI: 10.1080/13235818.2021.1957552

M. Quenu, S. Trewick, Elizabeth E. Daly, M. Morgan‐Richards

{"title":"Generation of large mitochondrial and nuclear nucleotide sequences and phylogenetic analyses using high-throughput short-read datasets for endangered Placostylinae snails of the southwest Pacific","authors":"M. Quenu, S. Trewick, Elizabeth E. Daly, M. Morgan‐Richards","doi":"10.1080/13235818.2021.1957552","DOIUrl":"https://doi.org/10.1080/13235818.2021.1957552","url":null,"abstract":"ABSTRACT Placostylinae are a sub-family of terrestrial land snails endemic to the southwest Pacific. Some species are harvested for food, and others are critically endangered. Here we assemble and characterise complete mitochondrial genomes, as well as three nuclear markers (partial 45S ribosomal cassettes and the histone genes H3 and H4) of five snail species from three geographical regions (New Zealand, New Caledonia and the Solomon Islands). Mitogenomes of Placostylinae snails ranged between 14,544 bp and 14,711 bp, with minor variation in the position of tRNA tyrosine (Y) and tRNA tryptophane (W). The 45S ribosomal cassette contained intra-genomic nucleotide variation in ITS2. Cassettes containing histone genes H3 and H4 and their non-transcribed spacer region were assembled for three species, with the two genes coded in the same direction. Phylogenetic analysis on this large dataset (mitochondrial genome + nuclear markers) supported geographical clustering of species but could not confidently infer monophyly of the four Placostylus species with respect to Eumecostylus cleryi. Analysis based on shorter cytochrome c oxidase sequences with a wider taxon sampling found species representing the genera Eumecostylus and Placocharis were nested within the phylogenetic diversity of Placostylus. Multi-locus phylogenetic analysis containing mitochondrial and nuclear sequences did not support monophyly of Placostylinae.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"243 - 253"},"PeriodicalIF":1.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13235818.2021.1957552","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42987671","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

The abundance, distribution and diversity of invasive and indigenous freshwater snails in a section of the Ogunpa River, southwest Nigeria 尼日利亚西南部奥贡帕河一段入侵和本地淡水蜗牛的丰度、分布和多样性

IF 1 4区生物学

Molluscan Research Pub Date : 2021-07-03 DOI: 10.1080/13235818.2021.1946905

Musa K. Oladejo, O. O. Oloyede, T. Adesakin, O. Morenikeji

{"title":"The abundance, distribution and diversity of invasive and indigenous freshwater snails in a section of the Ogunpa River, southwest Nigeria","authors":"Musa K. Oladejo, O. O. Oloyede, T. Adesakin, O. Morenikeji","doi":"10.1080/13235818.2021.1946905","DOIUrl":"https://doi.org/10.1080/13235818.2021.1946905","url":null,"abstract":"ABSTRACT This study investigated the abundance, distribution and diversity of freshwater snails at four sites in the Ogunpa River, Nigeria from May 2018 to December 2018. A total of 2067 freshwater snails was collected, belonging to two sub-classes, four families, and seven species: Physella acuta, Amerianna carinata, Melanoides tuberculata, Physa waterloti, Bulinus globosus, Bulinus senegalensis, and Lymnaea natalensis. Invasive freshwater snails (82.15%) were more abundant than indigenous species (17.85%). Physella acuta (30.05%) and P. waterloti (20.61%) were the most abundant species, while B. globosus (4.35%) and B. senegalensis (3.92%) were the least abundant. The presence of P. acuta, B. globosus, B. senegalensis, and M. tuberculata constitute potential economic and health risks to animals and humans in contact with this waterbody. Freshwater snail numbers showed variation among sites, seasons, and site-season interactions. Water depth, turbidity, and pH correlated significantly with the numbers of freshwater snails, except that pH did not correlate with P. waterloti. There were strong positive correlations between the numbers of molluscs and the abundance of Commelina diffusa, Amaranthus spinosus, Murdannia nudiflora, and Ipomoea aquatica. Stepwise multiple regression showed that water depth, C. diffusa, and Sacciolepis africana were the primary variables affecting snail distribution and abundance in the Ogunpa River.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"222 - 234"},"PeriodicalIF":1.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13235818.2021.1946905","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46951480","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: 5

Mass mortality of the black sea hare Aplysia gigantea (Gastropoda: Aplysiidae) at Augusta, Western Australia in the austral summer of 2021 2021年南夏季，西澳大利亚奥古斯塔黑海兔大海兔（腹足目：海兔科）的大规模死亡

IF 1 4区生物学

Molluscan Research Pub Date : 2021-07-03 DOI: 10.1080/13235818.2021.1962594

F. Wells, J. Browne, R. Loh, M. Massam, John McKinney

引用次数: 1

A new species of Umbilia Jousseaume, 1884 (Mollusca: Cypraeidae) from the Australian Pliocene 澳大利亚上新世朱塞翁属一新种，1884年（软体动物纲：Cypraeidae）

IF 1 4区生物学

Molluscan Research Pub Date : 2021-07-03 DOI: 10.1080/13235818.2021.1962588

P. Southgate, T. Militz, M. Roberts

引用次数: 3

A new species of land snail from the genus Diplommatina Benson, 1849 (Gastropoda, Caenogastropoda, Diplommatinidae) from Sikkim Himalaya, North East India 印度东北部锡金-喜马拉雅半岛Diplommatina Benson属陆蜗牛一新种，1849（腹足目，软体动物目，Diplommatinidae）

IF 1 4区生物学

Molluscan Research Pub Date : 2021-07-03 DOI: 10.1080/13235818.2021.1970352

Nipu Kumar Das, N. A. Aravind

引用次数: 2

Predation on the egg of Coelostoma stultum (Coleoptera: Hydrophilidae) by the alien species Deroceras laeve (Mollusca: Gastropoda: Agriolimacidae) 外来物种Deroceras laeve（软体动物：腹足目：Agriolimachidae

IF 1 4区生物学

Molluscan Research Pub Date : 2021-07-03 DOI: 10.1080/13235818.2021.1946895

Ryosuke Matsushima, T. Haga

{"title":"Predation on the egg of Coelostoma stultum (Coleoptera: Hydrophilidae) by the alien species Deroceras laeve (Mollusca: Gastropoda: Agriolimacidae)","authors":"Ryosuke Matsushima, T. Haga","doi":"10.1080/13235818.2021.1946895","DOIUrl":"https://doi.org/10.1080/13235818.2021.1946895","url":null,"abstract":"ABSTRACT Slugs are polyphagous herbivores that damage various crops. The genus Deroceras is primarily herbivorous; however, certain species are known to feed on various types of organic matter. In this study, we documented field observations of predation by Deroceras on eggs of the water scavenger beetle Coelostoma stultum at the waterside of paddy fields in central Japan and identified the predator species by DNA barcoding. Molecular phylogenetic analyses revealed that the slugs found sympatrically with C. stultum are Deroceras laeve, whose two haplotypes are widely distributed throughout the Palearctic and eastern margin of Asia. In two of three observed predation events, D. laeve thrust its head into the egg cocoon and preyed on eggs while C. stultum females were spinning. In the other event, no females spinning egg cocoons were observed. Due to the relatively large body size of the slug, it may push the female beetle away and prey on eggs. Considering the native distribution range of these two species, invasion of D. laeve has resulted in a new combination of predator–prey relationships in Japan between D. laeve and native C. stultum. It is a matter of concern that slugs may establish predatory pressures that threaten C. stultum.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"254 - 261"},"PeriodicalIF":1.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13235818.2021.1946895","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48621050","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

Phylogeography of the intertidal marine bivalve Lasaea hinemoa (Mollusca: Bivalvia) in New Zealand 新西兰潮间带海生双壳动物的系统地理学

IF 1 4区生物学

Molluscan Research Pub Date : 2021-07-03 DOI: 10.1080/13235818.2021.1966163

Katherine Lockton, H. Spencer

{"title":"Phylogeography of the intertidal marine bivalve Lasaea hinemoa (Mollusca: Bivalvia) in New Zealand","authors":"Katherine Lockton, H. Spencer","doi":"10.1080/13235818.2021.1966163","DOIUrl":"https://doi.org/10.1080/13235818.2021.1966163","url":null,"abstract":"ABSTRACT Genetic investigations of members of the bivalve genus Lasaea have revealed unexpected diversity in the genus, as well as close affiliations between geographically distant populations. Here we investigate the phylogeography of the New Zealand species L. hinemoa using mitochondrial and nuclear gene sequences (cytochrome c oxidase subunit III and Internal Transcribed Spacer 2, respectively) from populations around the country. Additionally, we designed novel microsatellite markers, which enabled us to check the specific species status implied by the two single-gene markers. Lasaea hinemoa individuals fell into four clades. Clades I and III were numerically dominant, with a suggestion of some biogeographic structure around the coasts of mainland New Zealand, and we argue they represent separate cryptic species. Samples from the subantarctic Antipodes Island contained individuals from two clades (I and II). The latter clade is close to populations from the Kerguelen Islands, which suggests possible transoceanic dispersal via the Antarctic Circumpolar Current. Clade IV, represented by small numbers of individuals from Picton and Mahia, appears to be the result of transoceanic dispersal by yet another Lasaea species.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"191 - 203"},"PeriodicalIF":1.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42468989","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

Caribbochiton guadeloupensis n. gen et n. sp. (Mollusca: Polyplacophora) from the Caribbean Sea 加勒比海的瓜德罗氏加勒比石虫(软体动物:多placophora)

IF 1 4区生物学

Molluscan Research Pub Date : 2021-06-27 DOI: 10.1080/13235818.2021.1941726

B. Sirenko, B. Anseeuw

{"title":"Caribbochiton guadeloupensis n. gen et n. sp. (Mollusca: Polyplacophora) from the Caribbean Sea","authors":"B. Sirenko, B. Anseeuw","doi":"10.1080/13235818.2021.1941726","DOIUrl":"https://doi.org/10.1080/13235818.2021.1941726","url":null,"abstract":"ABSTRACT A new genus and new species of the family Callistoplacidae from the bathyal zone near Guadeloupe Island in the Caribbean Sea are described. Caribbochiton guadeloupensis n. gen. et n. sp. is unlike other genera in the family Callistoplacidae: it has no ribs on end valves or on lateral areas of intermediate valves. According to other morphological features (thick shell, relatively narrow valves, noticeably raised lateral areas, similar slit formula, insertion plate teeth thickened at edges of slits, dorsal scales), this genus is closest to the family Callistoplacidae. Given that a number of species of the family do not have at a young age the ribs which appear later, we hypothesise that the new genus could have evolved as a result of paedomorphosis. An emended diagnosis of the family Callistoplacidae is hereby proposed. ZooBank registration: LSIDurn:lsid:zoobank.org:pub:BB94DD8F-C466-4B1B-8868-EEAB75E6930B Carribochiton LSIDurn:lsid:zoobank.org:act:EBD4411B-C39D-446C-AD24-EB5F3A27AB32 Carribochiton guadeloupensis LSIDurn:lsid:zoobank.org:act:19B8AF77-2AB8-4BD1-940A-CA4EAFFCF215","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"183 - 190"},"PeriodicalIF":1.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13235818.2021.1941726","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48923426","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

Extremely short embryonic period of the intertidal pulmonate limpet Siphonaria sirius (Pilsbry, 1895) 潮间带肺帽贝的极短胚胎期（Pilsbry，1895）

IF 1 4区生物学

Molluscan Research Pub Date : 2021-06-27 DOI: 10.1080/13235818.2021.1943601

Yoko Wada, Y. Yusa

引用次数: 0

A new species of Pila (Gastropoda: Ampullariidae) from Mizoram, India 标题印度米佐拉姆邦琵拉鱼属一新种(腹足纲:壶腹鱼科)

IF 1 4区生物学

Molluscan Research Pub Date : 2021-06-20 DOI: 10.1080/13235818.2021.1941575

Maitreya Sil, Reshma Basak, K. Karanth, N. A. Aravind

{"title":"A new species of Pila (Gastropoda: Ampullariidae) from Mizoram, India","authors":"Maitreya Sil, Reshma Basak, K. Karanth, N. A. Aravind","doi":"10.1080/13235818.2021.1941575","DOIUrl":"https://doi.org/10.1080/13235818.2021.1941575","url":null,"abstract":"ABSTRACT Family Ampullariidae consists of 11 genera of freshwater snails distributed pan-tropically in the Old and the New World. One of the ampullarid genera, Pila, is distributed in Africa and Asia and consists of 28 species. Here we describe the sixth member of the genus Pila from India. Pila mizoramensis n. sp. was collected from the Northeast Indian state of Mizoram. We adopted an integrative taxonomic approach to describe this species. First, a multilocus phylogeny of the genus was built to determine its placement in the tree. Then we used pairwise distance in the cytochrome oxidase I gene to compare its divergence from its congeners. Finally morphometric data was used to show that this hill stream species of Pila does not overlap with other hill stream species in morphometric space. The morphology of the species is also discussed in detail. With the advent of molecular tools in taxonomy a plethora of new species have been described from India in the last few decades. We add this newest member of genus Pila to the growing list.ZooBank registration: http://www.zoobank.org/urn:urn:lsid:zoobank.org:pub:0ED40557-4595-49E5-99A6-8A684C5D6AB3","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"204 - 213"},"PeriodicalIF":1.0,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13235818.2021.1941575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46791405","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