Molluscan Research最新文献_第8页

New records and two new species of Grimpoteuthis (Octopoda: Cirrata: Grimpoteuthididae) from southern Australia and New Zealand 标题南澳洲及纽西兰绿足足新记录及二新种(章鱼纲:卷尾纲:绿足足足足科)

IF 1 4区生物学

Molluscan Research Pub Date : 2022-01-02 DOI: 10.1080/13235818.2022.2035889

Tristan Joseph Verhoeff, S. O'shea

{"title":"New records and two new species of Grimpoteuthis (Octopoda: Cirrata: Grimpoteuthididae) from southern Australia and New Zealand","authors":"Tristan Joseph Verhoeff, S. O'shea","doi":"10.1080/13235818.2022.2035889","DOIUrl":"https://doi.org/10.1080/13235818.2022.2035889","url":null,"abstract":"ABSTRACT New deep-sea cirrate octopuses (Octopoda: Cirrata) are reported from around Australia and New Zealand. The limited collections comprise three species, one that is for the first time reported from Australian waters, and one from each of Australia and New Zealand that we deem to be new to science. Taxonomic instability and regional taxonomic novelty preclude the unambiguous attribution of any species to genus. While we consider no species to be sibling, or even closely related, each is attributed to Grimpoteuthis: G. greeni n. sp., based on three specimens from southern Australia; G. angularis n. sp., based on a single specimen from New Zealand; and the first male specimen of G. abyssicola O’Shea, 1999, formerly known from the central Tasman Sea, which we describe and extend the distribution of into Australian waters. Relationships between these taxa and others provisionally attributed to the Grimpoteuthididae O’Shea, 1999 are evaluated and based primarily on the morphology of the shell, and secondarily on that of the gill, we propose a preliminary division of Grimpoteuthis sensu lato into three sensu lato morphologies. Publication LSID: lsid:http://zoobank.org:pub:92ACA16A-CB40-4254-BF7A-EAB25977AA92","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"42 1","pages":"4 - 30"},"PeriodicalIF":1.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43624359","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: 4

Substrate variety and host preference of the epizoic limpet Lottia tenuisculpta (Patellogastropoda: Lottiidae) 表生界帽贝Lottia tenisculpta的基质多样性和寄主偏好（帕特洛腹足目：Lottidae）

IF 1 4区生物学

Molluscan Research Pub Date : 2022-01-02 DOI: 10.1080/13235818.2022.2036308

R. Nakayama, T. Nakano, A. Asakura

{"title":"Substrate variety and host preference of the epizoic limpet Lottia tenuisculpta (Patellogastropoda: Lottiidae)","authors":"R. Nakayama, T. Nakano, A. Asakura","doi":"10.1080/13235818.2022.2036308","DOIUrl":"https://doi.org/10.1080/13235818.2022.2036308","url":null,"abstract":"ABSTRACT Substrate variety and host preference of the epizoic limpet Lottia tenuisculpta were investigated based on specimen and field observations. Specimen observation revealed the presence of the limpet on 33 species of Mollusca and two species of Crustacea, and it predominantly used Tegulidae and Muricidae throughout its geographic range. Some of the substrate molluscs had radula traces and home scars probably engraved by L. tenuisculpta. Field observations conducted on the rocky shore of Shirahama, Wakayama, Japan, revealed the presence of L. tenuisculpta on 12 species of molluscs. The tegulid Omphalius nigerrimus and the muricid Reishia clavigera were its major substrates in the locality. The results of both sets of observations suggest that L. tenuisculpta is a host-general facultative epizoite and its host preference is family-specific. The choice of host species by L. tenuisculpta might be determined by the abundance and morphological and biological restrictions of the preferred substrates in each locality. The host-general and facultative nature of the limpet allows it to show geographical host conversion and contribute to favouring epizoic behaviour. Home scars of L. tenuisculpta on the hosts suggest that the limpet inhabits the same individual of the substrate species for an extended period.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"42 1","pages":"31 - 40"},"PeriodicalIF":1.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45103540","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

Occurrence of bacteria potentially pathogenic to humans in a harvested intertidal sea snail 在收获的潮间带海螺中发现对人类有潜在致病性的细菌

IF 1 4区生物学

Molluscan Research Pub Date : 2022-01-02 DOI: 10.1080/13235818.2022.2028970

R. Sousa, J. Vasconcelos, I. Vera-Escalona, R. Riera

{"title":"Occurrence of bacteria potentially pathogenic to humans in a harvested intertidal sea snail","authors":"R. Sousa, J. Vasconcelos, I. Vera-Escalona, R. Riera","doi":"10.1080/13235818.2022.2028970","DOIUrl":"https://doi.org/10.1080/13235818.2022.2028970","url":null,"abstract":"ABSTRACT Microbes associated with marine invertebrates play a key role in the physiological and biochemical processes of the host, and can be responsible for food-borne diseases in humans. Raw invertebrates are a common component of coastal gastronomy worldwide and their consumption could represent a potential risk to humans if their microbiome hosts infectious bacteria. However, these species’ microbiome composition is usually unknown. In this study, we sequenced the 16S gene to characterise the microbiome of the digestive system and gonads of the commercially-exploited sea snail Phorcus sauciatus from the Macaronesian islands and mainland Portugal. The goal was to identify bacteria that might pose a threat to humans. In total, 910 OTUs were identified, thirty-two of which were found to be classified as Risk level-1 and -2 species. Among these, twenty pathogenic bacterial strains were found in high relative abundance and identified as potential drivers of human diseases, including Micrococcus luteus and Serratia marcescens. Here, we discuss how our findings on the occurrence of these bacteria could seriously affect humans. Our results are relevant beyond the scope of this study, as this work might also pave the way for uncovering further implications on the raw consumption of other shellfish and invertebrate species.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"42 1","pages":"41 - 49"},"PeriodicalIF":1.0,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48843500","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

A recurring population of the sea hare Bursatella hirsuta (Gastropoda: Aplysiidae) at Rottnest Island, Western Australia 在澳大利亚西部的罗特尼斯岛，有一种重复出现的海象(腹足纲:腹足科)

IF 1 4区生物学

Molluscan Research Pub Date : 2021-10-02 DOI: 10.1080/13235818.2021.2007750

F. Wells, C. Bessey, M. M. Gagnon, J. Keesing, J. Prince

{"title":"A recurring population of the sea hare Bursatella hirsuta (Gastropoda: Aplysiidae) at Rottnest Island, Western Australia","authors":"F. Wells, C. Bessey, M. M. Gagnon, J. Keesing, J. Prince","doi":"10.1080/13235818.2021.2007750","DOIUrl":"https://doi.org/10.1080/13235818.2021.2007750","url":null,"abstract":"ABSTRACT In many, but not all, years a recurring population of the marine aplysiid Bursatella hirsuta occurs on an intertidal limestone platform stretching between Little Armstrong Bay and North Point at Rottnest Island, Western Australia. Using a transect/quadrat method, we measured densities of B. hirsuta during the austral summer of 2020/2021. No individuals were present in December 2020, but a population with a mean density of 16.5 ± 1.6 (SE) inds m−2 was present on 17 January 2021. Density was low in bare sand (2.6 ± 3.2 inds m−2) and in the seagrass Amphibolis antarctica (2.0 ± 1.4 inds m−2), high in mixed algae, mostly Phaeophyceae (18.2 ± 1.8 inds m−2) and greatest (27.2 ± 14.3 inds m−2) in a small number of quadrats with a mixture of sand and algae or sand and A. antarctica. The population was estimated at >600,000 individuals. The species was present in February but had disappeared by late March 2021. The population at Little Armstrong Bay and North Point provides a fertile opportunity for developing a better understanding of the biology of B. hirsuta and broader questions of boom-and-bust populations.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"285 - 288"},"PeriodicalIF":1.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41738707","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

Comments on “A new species of land snail from the genus Diplommatina Benson, 1849 (Gastropoda, Caenogastropoda, Diplommatinidae) from Sikkim Himalaya, North East India” by N. K. Das & N. A. Aravind, Molluscan Research 41 (3), 262–268, 2021 N.K.Das和N.A.Aravind对“印度东北部锡金喜马拉雅Diplommatina Benson属陆生蜗牛的一个新种，1849（腹足目，软体动物纲，Diplommadinidae）”的评论，软体动物研究41（3），262-2682021

IF 1 4区生物学

Molluscan Research Pub Date : 2021-10-02 DOI: 10.1080/13235818.2021.1986203

Zheyu Chen, Adrienne Jochum

引用次数: 1

Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors 阿拉伯海中一只巨大的紫背飞乌贼Sthenoteuthis oualaniensis（头足目：头足目）个体的特征及其生物学描述

IF 1 4区生物学

Molluscan Research Pub Date : 2021-10-02 DOI: 10.1080/13235818.2021.2003513

K. K. Sajikumar, T. M. Najmudeen, N. Ragesh, N. S. Jeena, Summaya Rahuman, K. T. S. Sunil, G. Sasikumar, Kolliyil Sunilkumar Mohamed

{"title":"Characterisation of an individual of the giant form of the purpleback flying squid Sthenoteuthis oualaniensis (Cephalopoda: Ommastriphidae) in the Arabian Sea and its biological descriptors","authors":"K. K. Sajikumar, T. M. Najmudeen, N. Ragesh, N. S. Jeena, Summaya Rahuman, K. T. S. Sunil, G. Sasikumar, Kolliyil Sunilkumar Mohamed","doi":"10.1080/13235818.2021.2003513","DOIUrl":"https://doi.org/10.1080/13235818.2021.2003513","url":null,"abstract":"ABSTRACT This paper describes a mated female of the giant form of purpleback flying squid Sthenoteuthis oualaniensis (545 mm dorsal mantle length and 5.46 kg body weight) caught in the Arabian Sea, with biological, morphological, and molecular descriptors. Based on the growth increments within statoliths, its age was found to be 203 days with a high growth rate of 2.68 mm DML/day. Its diet contained squids (72.3%) and fish (27.3%) with a high degree (70%) of cannibalism. The total fecundity of the individual was estimated as 702,240 eggs. Three species of parasites were found, two species of Platyhelminthes from the mantle cavity (Phyllobothrium sp. and Nybelinia sp.) and one of Nematoda from the stomach (Anisakis simplex). The COI barcode confirmed the identity of the giant form as S. oualaniensis, and the high genetic divergence (6.18–9.35%) that was observed between the current specimen and other forms from various oceans points to the probability that it might be a genetically distinct lineage from the northern Indian Ocean. The present record forms the southernmost (10°05′ N) record of the giant form of this flying squid.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"275 - 284"},"PeriodicalIF":1.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49425192","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

Redescription of Acmella tersa (Benson, 1853), the type species of Acmella W.T. Blanford, 1869 (Gastropoda: Assimineidae), from Meghalaya, Northeast India 印度东北部梅加拉亚的斑腹蛛模式种——斑腹蛛的重新描述（Benson，1853），1869年（腹足目：Assiminidae）

IF 1 4区生物学

Molluscan Research Pub Date : 2021-10-02 DOI: 10.1080/13235818.2021.1991255

Nipu Kumar Das, B. Páll‐Gergely, F. Naggs, R. C. Preece, T. White, N. A. Aravind

引用次数: 3

Giants of Taiwan – comparative analysis of life history traits in four land snail species Changphaedusa horikawai, Formosana swinhoei, F. formosensis, and Formosana sp. (Stylommatophora: Clausiliidae: Phaedusinae) 台湾的巨人——四种陆生蜗牛——长脊螺、台湾海螺、台湾海螺和台湾海螺生活史特征的比较分析

IF 1 4区生物学

Molluscan Research Pub Date : 2021-10-02 DOI: 10.1080/13235818.2021.1984189

A. Sulikowska-Drozd, C. Hwang, B. Páll‐Gergely, Shu-Ping Wu

{"title":"Giants of Taiwan – comparative analysis of life history traits in four land snail species Changphaedusa horikawai, Formosana swinhoei, F. formosensis, and Formosana sp. (Stylommatophora: Clausiliidae: Phaedusinae)","authors":"A. Sulikowska-Drozd, C. Hwang, B. Páll‐Gergely, Shu-Ping Wu","doi":"10.1080/13235818.2021.1984189","DOIUrl":"https://doi.org/10.1080/13235818.2021.1984189","url":null,"abstract":"ABSTRACT Family Clausiliidae (door-snails), which includes oviparous, embryo-retaining and viviparous species, can be a model group for studies on the evolution of reproductive modes in land snails. Yet, for understanding of evolutionary drivers leading to repeated changes of reproductive strategy, the identification of life history traits in phylogenetic lineages and geographical regions is fundamental. In this paper, we identified reproductive modes of clausiliid species endemic to Taiwan: Changphaedusa horikawai, Formosana formosensis, F. swinhoei, and an undescribed new species Formosana sp. Observations were conducted under laboratory conditions. Among Formosana species, oviparity predominated but embryo-retention was also recorded. The size of eggs and egg clutches differed between studied taxa. In contrast, C. horikawai was viviparous and delivered neonates. Anatomical examination of the fresh material allowed for unique observation of a large podocyst in embryos kept in the genital tract. This flattened structure may enable respiration or nutrient transfer between an embryo and a parent. In the regularly sampled wild population from Dawulun (N. Taiwan), gravid individuals were collected between April and November. The number of embryos reached three to nine per gravid individual. None of the species reproduced by self-fertilisation. Results of our study may support implementing conservation measures for malacofauna of Taiwan.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"298 - 315"},"PeriodicalIF":1.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46172291","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

Combined effects of air temperature, photoperiod and humidity on Otala tingitana snails’ breeding (Mollusca, Gastropoda, Helicidae) 气温、光周期和湿度对丁氏钉螺(软体动物、腹足动物、螺蛳科)繁殖的综合影响

IF 1 4区生物学

Molluscan Research Pub Date : 2021-10-02 DOI: 10.1080/13235818.2021.2004574

Abdelmajid El Khayari, E. Rour

{"title":"Combined effects of air temperature, photoperiod and humidity on Otala tingitana snails’ breeding (Mollusca, Gastropoda, Helicidae)","authors":"Abdelmajid El Khayari, E. Rour","doi":"10.1080/13235818.2021.2004574","DOIUrl":"https://doi.org/10.1080/13235818.2021.2004574","url":null,"abstract":"ABSTRACT This study investigates the reproduction of Otala tingitana (Paladilhe, 1875) snails collected from El Hajeb region (Morocco) after aestivation and reared in transparent containers under eight different combinations of air temperature, relative humidity (RH), and photoperiod [hours of light (L) and darkness (D)]. Biomass change was used to evaluate the growth of the snails. Mating, egg-laying, and hatching were monitored to assess reproduction rate in different artificial conditions. Animals that were reared under a combination of (20°C, 50% RH, 16L-8D) showed improved mating frequency, whereas the best breeding yield and reproduction rate were obtained with a combination of 20°C, 80% RH, and 16L-8D photoperiod. Except for one condition in which inhibition of laying was recorded (15°C, 50% RH, 16L-8D), O. tingitana snails showed high plasticity regarding the environmental factors tested. However, in all combinations used, none of the parameters was a limiting factor; instead, we suggest that the interaction between the three parameters modulates snail growth and reproduction. Overall, for the first time this study examined experimental evidence about the effect of environmental factors on the reproduction of Otala tingitana, thereby defining the optimal combination of temperature, humidity, and photoperiod for improved breeding of this species.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"316 - 323"},"PeriodicalIF":1.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43184222","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

Colchicum Ritchii flower: a new molluscicidal plant for Biomphalaria alexandrina snails and the infective stages of Schistosoma mansoni 秋水仙花：一种新的杀螺植物——亚历山大蜗牛和曼氏血吸虫感染阶段

IF 1 4区生物学

Molluscan Research Pub Date : 2021-10-02 DOI: 10.1080/13235818.2021.2003982

A. Ibrahim, H. A. Saleh, Khaled M. Zayed, M. Ghazy

{"title":"Colchicum Ritchii flower: a new molluscicidal plant for Biomphalaria alexandrina snails and the infective stages of Schistosoma mansoni","authors":"A. Ibrahim, H. A. Saleh, Khaled M. Zayed, M. Ghazy","doi":"10.1080/13235818.2021.2003982","DOIUrl":"https://doi.org/10.1080/13235818.2021.2003982","url":null,"abstract":"ABSTRACT Schistosomiasis is considered a neglected disease, but it is the cause of many social and economic problems in many developing countries. The aim of the present study was to find an alternative molluscicide of botanical origin to decrease the spread of this disease. The investigation studied the effect of the methanolic extract of Colchicum ritchii flowers on Biomphalaria alexandrina snails, larvae of Schistosoma mansoni, and the freshwater cladoceran Daphnia magna. The preliminary phytochemical screening test confirmed the presence of tannins and saponins that might be responsible for cytotoxic effects. The methanolic extract had a molluscicidal activity on B. alexandrina snails with an LC50 of 35.1 mg L−1 after 24 h of exposure. The LC50 of D. magna after 24 h was 63.5 mg L−1. The extract also had a larvicidal activity and caused alterations in the haemocytes of B. alexandrina snails. Aggregations of both hyalinocytes and granulocytes were formed after exposure for 24 h to LC25. Both the mean number of micronuclei per slide and the olive tail moment of snails exposed to LC10 and LC25 of the extract were increased compared to control snails. In conclusion, C. ritchii extract potentially could be used as a molluscicide and larvicide.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"41 1","pages":"289 - 297"},"PeriodicalIF":1.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48796888","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