Malacologia最新文献_第5页

A Review of the Molluscan Microbiome: Ecology, Methodology and Future 软体动物微生物组的生态学、方法论和未来

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0208

B. Chalifour, Jingchun Li

引用次数: 5

Redescription of the Flapjack Octopod, Opisthoteuthis bruuni (Cephalopoda: Opisthoteuthidae), from the Southeastern Pacific Ocean and Evolutionary Relationships of Cirrate Octopods 东南太平洋的斑尾章鱼Opisthotuthis bruni（头足目：斑尾章鱼科）的重新描述和环状章鱼的进化关系

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0201

M. C. Pardo-Gandarillas, Mariana Díaz-Santana-Iturrios, Mark C. Fenwick, R. Villanueva, C. Ibáñez

{"title":"Redescription of the Flapjack Octopod, Opisthoteuthis bruuni (Cephalopoda: Opisthoteuthidae), from the Southeastern Pacific Ocean and Evolutionary Relationships of Cirrate Octopods","authors":"M. C. Pardo-Gandarillas, Mariana Díaz-Santana-Iturrios, Mark C. Fenwick, R. Villanueva, C. Ibáñez","doi":"10.4002/040.063.0201","DOIUrl":"https://doi.org/10.4002/040.063.0201","url":null,"abstract":"ABSTRACT Cirrate octopods are considered to resemble the ancestor of all octopuses. Cirrates inhabit the deep ocean and are characterized by the presence of fins, a cartilaginous inner shell and a single row of suckers alternating with pairs of cirri thus comprising uniserial suckers and biserial cirri. The objective of this contribution is to improve the taxonomy of Opisthoteuthis bruuni from the southeastern Pacific Ocean and to suggest a new hypothesis of cirrate phylogeny. Given that the most complete molecular data set for cirrates available in public databases is comprised almost exclusively of 16S rRNA gene sequences, we compared the morphological and mitochondrial gene 16S rRNA data generated in this study from the genus Opisthoteuthis from the southeastern Pacific Ocean. Additionally, we sequenced Opisthoteuthis chathamensis, Opisthoteuthis mero and Luteuthis dentatus from the southwestern Pacific, as along with Cirroctopus mawsoni from Antarctic waters. The morphological data and the phylogenetic analysis confirm the status of Opisthoteuthis bruuni as a member of genus Opisthoteuthis and the family Opisthoteuthidae. This re-description includes the first morphological characterization of the male and female adult stage of O. bruuni, in addition to reporting geographic and bathymetric range extensions. Opisthoteuthis bruuni presents conspicuous morphological features (small terminal fins, short cirri and U-shaped shell). Our phylogenetic tree supports three families: Cirroctopodidae, Cirroteuthidae and Opisthoteuthidae, which is different from the phylogenetic arrangements previously reported.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48382585","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

Pyramidellidae (Gastropoda: Heterobranchia) from the End of the World 世界尽头的锥虫科（腹足目：异鳃亚目）

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0205

Javier Di Luca, Marina Güller, D. Zelaya

{"title":"Pyramidellidae (Gastropoda: Heterobranchia) from the End of the World","authors":"Javier Di Luca, Marina Güller, D. Zelaya","doi":"10.4002/040.063.0205","DOIUrl":"https://doi.org/10.4002/040.063.0205","url":null,"abstract":"ABSTRACT Current knowledge on the pyramidellids from the southern tip of South America appears restricted to a couple of species described in the beginning of the 20th century and a few taxa subsequently reported from this area, including some species recognized as new, but never formally described. This study fills this gap in the knowledge by performing the first revision on the diversity of Pyramidellidae occurring in the Magellanic Province. The material for this study arises from extant collections made along the Atlantic and Pacific coasts of Patagonia, the Beagle Channel, the Magellan Strait and in Burdwood Bank; this information was supplied with specimens from museum collections. As part of this study, eight pyramidellid species, belonging to the genera Turbonilla, Fargoa, Menestho and Brachystomia are recognized from the Magellanic Province, including five species new to science: Turbonilla deseadensis n. sp., Menestho beaglensis n. sp., M. patagonica n. sp., Brachystomia conica n. sp. and B. tenuilirata n. sp. The distinctive characters of Menestho, a genus frequently misunderstood in the past, are also discussed. The presence of Menestho and Brachystomia are here documented for the first time for the southern tip of South America. In addition, a neotype for Turbonilla strebeli Strebel, 1905 (non Verrill, 1880) is here designated.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49425835","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

Review of the Genus Pseudiberus Ancey, 1887 (Eupulmonata: Camaenidae) in Shandong Province, China 文章标题山东伪蠓属，1887(假蠓纲:假蠓科)述评

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0207

Guoyi Zhang, Min Wu, F. Köhler, Teng-Liang Liu

{"title":"Review of the Genus Pseudiberus Ancey, 1887 (Eupulmonata: Camaenidae) in Shandong Province, China","authors":"Guoyi Zhang, Min Wu, F. Köhler, Teng-Liang Liu","doi":"10.4002/040.063.0207","DOIUrl":"https://doi.org/10.4002/040.063.0207","url":null,"abstract":"ABSTRACT The genus Pseudiberus Ancey, 1887, in Shandong, China, distributed in the mid to the south mountainous areas of the province, represents the largest terrestrial mollusks in this region. By molecular phylogenetic inference and genetic distance comparison based on ITS2 + 16S sequences, P. tectumsinense tectumsinense (Martens, 1873), P. tectumsinense zenonis (Gredler, 1882), P. tectumsinense anderssoni (Odhner, 1925) and P. tectumsinense depressus (Yen, 1935), are confirmed to be subspecies under P. tectumsinense (Martens, 1873). Pseudiberus tectumsinense pingi, new subspecies, is proposed to be new based on shell morphology, anatomy, and evidence of molecular phylogeny. Pseudiberus futtereri (Andreae, 1900) is removed from the species list of Shandongese Pseudiberus. The proximal accessory sac, observed in all the anatomically known Pseudiberus from Shandong, is described for the first time in dart sac apparatus from the bradybaenine snails. The variations and patterns of the proximal accessory sac among Pseudiberus tectumsinense subspecies and P. chentingensis distributed east to the Taihangshan Mountain Chain are examined. The close relationship among Shandong's Pseudiberus might be indicative of their rather recent evolutionary divergence, which was possibly driven by allopatric isolation of populations confined to refugial habitats like isolated mountain tops surrounded by extensive flood plains.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44529927","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

Evidence of a Biogenic Mineralization Process in Vermetid Feeding Mucus as Revealed by Raman Spectroscopy and Scanning Electron Microscopy 拉曼光谱和扫描电子显微镜揭示了蚯蚓粪中生物矿化过程的证据

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0206

B. Rezende, Paula Spotorno-Oliveira, S. D’ávila, L. Maia, L. F. Cappa de Oliveira

{"title":"Evidence of a Biogenic Mineralization Process in Vermetid Feeding Mucus as Revealed by Raman Spectroscopy and Scanning Electron Microscopy","authors":"B. Rezende, Paula Spotorno-Oliveira, S. D’ávila, L. Maia, L. F. Cappa de Oliveira","doi":"10.4002/040.063.0206","DOIUrl":"https://doi.org/10.4002/040.063.0206","url":null,"abstract":"ABSTRACT Using analytical (Raman spectroscopy) and imaging (scanning electron microscopy) approaches, we evidenced a biogenic mineralization process in the pedal mucus of the vermetids Eualetes tulipa and Petaloconchus varians. Raman spectra showed the presence of main bands around v1(CO) 1,085, n4(OCO) 717 and 705 cm-1 attributed to stretching modes of calcium carbonate crystallized as calcite and aragonite. SEM images showed the presence of aragonite needles and rhombohedral crystals of calcite in the mucus. Secondary nucleation from calcium carbonate precursors is the most probably pathway for the formation and growth of calcium carbonate crystals in feeding mucus of E. tulipa and P. varians. The tube-like shells of vermetids are very plastic. They are capable of continuously modify the direction of the shell aperture, remolding their tubes and building terminal structures. As a result, vermetid shells may act as exploratory tubes that allow the snail to profit from a better water flow, avoid obstacles and successfully compete for space. Such plasticity probably demands an extra supply of calcium carbonate, particularly when indeterminate growth is involved, as is the case for species of Eualetes and Petaloconchus; this would explain the functional significance of the biogenic calcium carbonate formation in the feeding mucus.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43292483","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: 1

The Family Mactridae Lamarck, 1809 (Bivalvia: Cardiida) in South African Waters 拉马克家，1809年(比瓦亚目:卡迪亚目)在南非水域

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0204

J. Signorelli

引用次数: 1

Introduction of the Predatory Land Snail Species Poiretia delesserti (Spiraxidae) in France 法国捕食性陆地蜗牛Poiretia delesserti的引种

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0209

B. Hausdorf, Stephan Solvery

引用次数: 2

Ingestion of Poisonous Eggs of the Invasive Apple Snail Pomacea canaliculata Adversely Affects Bullfrog Lithobathes catesbeianus Intestine Morphophysiology 牛蛙误食入侵Apple Snail Pomacea canaliculata有毒卵对其肠道形态生理的影响

IF 1.3 4区生物学

Malacologia Pub Date : 2021-03-01 DOI: 10.4002/040.063.0202

T. R. Brola, M. Dreon, P. Fernández, E. Portiansky, H. Heras

{"title":"Ingestion of Poisonous Eggs of the Invasive Apple Snail Pomacea canaliculata Adversely Affects Bullfrog Lithobathes catesbeianus Intestine Morphophysiology","authors":"T. R. Brola, M. Dreon, P. Fernández, E. Portiansky, H. Heras","doi":"10.4002/040.063.0202","DOIUrl":"https://doi.org/10.4002/040.063.0202","url":null,"abstract":"ABSTRACT The poisonous eggs of Pomacea canaliculata hardly have any predators. This invasive snail, listed among 100 of the worst invasive species, is a serious crop pest and a vector of human parasitic diseases. Females lay eggs in pink-reddish masses, the colour presumably a warning of their chemical defenses. Egg ingestion alters rodent gastrointestinal tracts and is lethal if injected, but its effect on other taxa is unknown. Here we explored the toxic effects of Pomacea canaliculata eggs on the bullfrog Lithobathes catesbeianus (Anura, Ranidae). Juvenile bullfrogs were gavaged with egg extracts and their digestive tract analyzed after 24 h and 48 h using histological, immunohistochemical and lectin-histochemical techniques. Toxicity was also evaluated by intraperitoneal injection of egg extract. Egg extract ingestion adversely affected the small intestine of the bullfrogs. Short term (24 h) effects included large, reversible changes of the intestinal wall, villi morphology, and changes in the glycosylation patterns of enterocytes. The mucosal area increased and infiltration of inflammatory cells, mainly eosinophils and macrophages, were observed together with a weak hemorrhage. Most of these changes reversed after 48 h. In addition, intraperitoneal injection of egg extract was nontoxic to bullfrog juveniles and no lethality or behavioral changes were observed, a remarkable difference from the effect on rodents. Overall, these results indicate that toxins of apple snail eggs reversibly modify gut morphology, which may alter bullfrog physiology, limiting their ability to absorb egg nutrients. This study extends the known targets of the apple snail egg defenses against predation to amphibians.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46328364","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

Paropeas achatinaceum (Pfeiffer, 1846) and Other Alien Subulinine and Opeatine Land Snails in European Greenhouses (Gastropoda, Achatinidae) 欧洲温室中的Paroppeas achatinaceum（Pfeiffer，1846）和其他外来的Subulinine和Opeatine陆蜗牛（腹足目，Achatnidae）

IF 1.3 4区生物学

Malacologia Pub Date : 2020-09-10 DOI: 10.4002/040.063.0112

M. Horsák, F. Naggs, T. Backeljau

引用次数: 5

Maturity Assessment for the Implementation of the First Fishery Regulation in Patagonian Marine Gastropods 巴塔哥尼亚海洋腹足类动物实施第一项渔业法规的成熟度评估

IF 1.3 4区生物学

Malacologia Pub Date : 2020-09-10 DOI: 10.4002/040.063.0114

M. Cumplido, G. Bigatti

{"title":"Maturity Assessment for the Implementation of the First Fishery Regulation in Patagonian Marine Gastropods","authors":"M. Cumplido, G. Bigatti","doi":"10.4002/040.063.0114","DOIUrl":"https://doi.org/10.4002/040.063.0114","url":null,"abstract":"ABSTRACT In order to establish management measures for a new resource, the size at first maturity should be studied. This measurement is a powerful tool in enabling the sustainable exploitation of marine benthic resources. Patagonian marine gastropods are captured as complementary catches during scallop fisheries. Studies related to the size at first maturity were performed for edible marine gastropods in northern Patagonia and have been used for the creation of the first regulation of gastropod catches made by the Secretary of Fisheries of Chubut Province. The minimum capture size of some of the species included in this regulation was established from preliminary studies but needed histological confirmation. The present study aims to provide accurate information on the size at maturity by an assessment that includes first gonadal maturity and population size/weight data of Buccinanops deformis and Trophon geversianus, two edible species of marine gastropods with high abundance along the Patagonian Atlantic coast and elevated nutritional values in their edible tissues. By histological methods, females of B. deformis reach maturity at 2.8 cm and males at 1.95 cm. While by an alternative histological method (inflexion point method), females reach maturity at 2.76 cm and males at 2.1 cm. For T. geversianus, females reach maturity at 3 cm (inflexion point = 2.38 cm) and males at 1.65 cm (inflexion point = 2.01 cm). The maturity assessment of B. deformis and T. geversianus revealed that males reach maturity at a smaller size than females, probably due to the fact that females require a more gradual process in maturation with a greater reproductive investment. The size at first sexual maturity provides valuable information for establishing the minimum catchable size. Therefore, we estimate a minimum size limit for B. deformis of 3.6 cm and 3.5 cm for T. geversianus and suggest that fishery measurements for these species should be established by performing a particular maturity assessment in each fishery zone.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43577566","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: 6