ABSTRACT The species belonging to the family Mactridae living in South African waters are revised. After a bibliographical research, almost forty nominal species were found related to this area. The type material of all taxa was requested, examined and illustrated whenever possible. Additional comparative specimens from Natal Museum were studied. Details of type localities, repositories, and updated distribution were provided. This work revealed the presence of nine species belonging to the family Mactridae living in South African waters: Mactra aequisulcata G. B. Sowerby III, 1894, Mactra lilacea Lamarck, 1818, Simomactra capensis (G. B. Sowerby III, 1892), Scissodesma spengleri (Linnaeus, 1767), Standella ovalina (Lamarck, 1818), Lutraria (Lutraria) capensis Reeve, 1854, Lutraria (Lutraria) steynlussii Huber, 2010, Lutraria (Psammophila) inhacaensis Boshoff, 1965, and Eastonia solanderi (Gray, 1837). However, their generic placement in some cases must be confirmed. Genetic data will clarify if two new generic names for Mactra aequisulcata and Simomactra capensis, respectively, are required.
{"title":"The Family Mactridae Lamarck, 1809 (Bivalvia: Cardiida) in South African Waters","authors":"J. Signorelli","doi":"10.4002/040.063.0204","DOIUrl":"https://doi.org/10.4002/040.063.0204","url":null,"abstract":"ABSTRACT The species belonging to the family Mactridae living in South African waters are revised. After a bibliographical research, almost forty nominal species were found related to this area. The type material of all taxa was requested, examined and illustrated whenever possible. Additional comparative specimens from Natal Museum were studied. Details of type localities, repositories, and updated distribution were provided. This work revealed the presence of nine species belonging to the family Mactridae living in South African waters: Mactra aequisulcata G. B. Sowerby III, 1894, Mactra lilacea Lamarck, 1818, Simomactra capensis (G. B. Sowerby III, 1892), Scissodesma spengleri (Linnaeus, 1767), Standella ovalina (Lamarck, 1818), Lutraria (Lutraria) capensis Reeve, 1854, Lutraria (Lutraria) steynlussii Huber, 2010, Lutraria (Psammophila) inhacaensis Boshoff, 1965, and Eastonia solanderi (Gray, 1837). However, their generic placement in some cases must be confirmed. Genetic data will clarify if two new generic names for Mactra aequisulcata and Simomactra capensis, respectively, are required.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"63 1","pages":"195 - 223"},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42258499","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}
ABSTRACT We report an introduction of the predatory land snail Poiretia delesserti (Bourguignat, 1852) (Spiraxidae) from Albania and Greece in Cagnes-sur-Mer in southeastern France discovered by a citizen scientist. An uncontrolled expansion of this species in this region, which is characterized by a high number of endemic land snail species, is likely to result in extinctions. Therefore, we recommend the nature conservation authorities to survey the site to quantify population density and extent and to eradicate the introduced population of P. delesserti via manual collection.
{"title":"Introduction of the Predatory Land Snail Species Poiretia delesserti (Spiraxidae) in France","authors":"B. Hausdorf, Stephan Solvery","doi":"10.4002/040.063.0209","DOIUrl":"https://doi.org/10.4002/040.063.0209","url":null,"abstract":"ABSTRACT We report an introduction of the predatory land snail Poiretia delesserti (Bourguignat, 1852) (Spiraxidae) from Albania and Greece in Cagnes-sur-Mer in southeastern France discovered by a citizen scientist. An uncontrolled expansion of this species in this region, which is characterized by a high number of endemic land snail species, is likely to result in extinctions. Therefore, we recommend the nature conservation authorities to survey the site to quantify population density and extent and to eradicate the introduced population of P. delesserti via manual collection.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"63 1","pages":"307 - 310"},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47185638","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}
T. R. Brola, M. Dreon, P. Fernández, E. Portiansky, H. Heras
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.
{"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":"63 1","pages":"171 - 182"},"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}
ABSTRACT Land snails of the family Achatinidae, subfamilies Subulininae and Opeatinae, are commonly reported as alien species in European greenhouses, where they often reach high densities. These introduced species usually have tropical cosmopolitan distributions. Four of them (Opeas hannense, Allopeas clavulinum, Subulina octona, and S. striatella) are commonly reported and illustrated from greenhouses across Europe. A fifth species, Allopeas gracile, has also been reported from Europe, though from a few records only. In this paper, we report on a European colony of a sixth species, Paropeas achatinaceum, that was discovered in Austria in 2016. We provide photographic documentation for these six species with critical characters to distinguish them. In the past, at least five other alien nominal subulinine species have been reported from greenhouses in Europe. These are briefly discussed along with nomenclatural notes.
{"title":"Paropeas achatinaceum (Pfeiffer, 1846) and Other Alien Subulinine and Opeatine Land Snails in European Greenhouses (Gastropoda, Achatinidae)","authors":"M. Horsák, F. Naggs, T. Backeljau","doi":"10.4002/040.063.0112","DOIUrl":"https://doi.org/10.4002/040.063.0112","url":null,"abstract":"ABSTRACT Land snails of the family Achatinidae, subfamilies Subulininae and Opeatinae, are commonly reported as alien species in European greenhouses, where they often reach high densities. These introduced species usually have tropical cosmopolitan distributions. Four of them (Opeas hannense, Allopeas clavulinum, Subulina octona, and S. striatella) are commonly reported and illustrated from greenhouses across Europe. A fifth species, Allopeas gracile, has also been reported from Europe, though from a few records only. In this paper, we report on a European colony of a sixth species, Paropeas achatinaceum, that was discovered in Austria in 2016. We provide photographic documentation for these six species with critical characters to distinguish them. In the past, at least five other alien nominal subulinine species have been reported from greenhouses in Europe. These are briefly discussed along with nomenclatural notes.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"63 1","pages":"123 - 130"},"PeriodicalIF":1.3,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46285207","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}
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.
{"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":"63 1","pages":"139 - 147"},"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}
T. Wilke, J. Renz, T. Hauffe, Diana Delicado, J. Peters
ABSTRACT Species identification on the basis of specific mass profiles of peptides and small proteins – proteomic fingerprinting – is becoming increasingly popular among zoologists. While the method has been successfully applied to various groups of invertebrates, its applicability to gastropod species has not yet been tested. Here we use the cryptic brackish water mudsnail genus Ecrobia as a model taxon to assess the discriminative power of this approach in comparison to DNA-based approaches. Our pilot study shows that proteomic fingerprinting discriminates most species of Ecrobia well and that the discriminatory performance is similar to that of molecular phylogenetics based on mitochondrial genes. Thus, Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spectrometry (MALDI-TOF MS) may serve as a relatively inexpensive tool for an efficient identification of gastropod species.
{"title":"Proteomic Fingerprinting Discriminates Cryptic Gastropod Species","authors":"T. Wilke, J. Renz, T. Hauffe, Diana Delicado, J. Peters","doi":"10.4002/040.063.0113","DOIUrl":"https://doi.org/10.4002/040.063.0113","url":null,"abstract":"ABSTRACT Species identification on the basis of specific mass profiles of peptides and small proteins – proteomic fingerprinting – is becoming increasingly popular among zoologists. While the method has been successfully applied to various groups of invertebrates, its applicability to gastropod species has not yet been tested. Here we use the cryptic brackish water mudsnail genus Ecrobia as a model taxon to assess the discriminative power of this approach in comparison to DNA-based approaches. Our pilot study shows that proteomic fingerprinting discriminates most species of Ecrobia well and that the discriminatory performance is similar to that of molecular phylogenetics based on mitochondrial genes. Thus, Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spectrometry (MALDI-TOF MS) may serve as a relatively inexpensive tool for an efficient identification of gastropod species.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"46 9-10","pages":"131 - 137"},"PeriodicalIF":1.3,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41301390","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}
ABSTRACT Theta lyronuclea (Clarke, 1959), a North Atlantic deep-water species, is recorded for the first time from the southwestern Atlantic. This constitutes the first record of the genus and the second mention of the family Raphitomidae off Argentina. The samples were collected in the Mar del Plata Submarine Canyon on the Argentine Continental slope on board the R/V Puerto Deseado at 2,934 m depth in September 2013. Photographs of radulae, penises, and details of the ornamentation of the protoconch are provided. Detailed comparison of the specimens collected with the type material and several lots from northern Atlantic localities confirmed the identification.
Theta lyronuclea (Clarke, 1959)是北大西洋深水物种，首次在大西洋西南部被记录到。这构成了该属的第一次记录和第二次提及阿根廷的Raphitomidae科。这些样本于2013年9月在阿根廷大陆斜坡上的Mar del Plata海底峡谷的R/V Puerto Deseado上收集，深度为2,934米。提供了原海螺的核、阴茎和装饰细节的照片。将收集的标本与模式材料和北大西洋地区的几批标本进行详细比较，证实了这一鉴定。
{"title":"The North Atlantic Conoidean Gastropod Theta lyronuclea (Raphitomidae) in Deep-Waters of the Southwestern Atlantic","authors":"Noelia Sánchez, G. Pastorino","doi":"10.4002/040.063.0104","DOIUrl":"https://doi.org/10.4002/040.063.0104","url":null,"abstract":"ABSTRACT Theta lyronuclea (Clarke, 1959), a North Atlantic deep-water species, is recorded for the first time from the southwestern Atlantic. This constitutes the first record of the genus and the second mention of the family Raphitomidae off Argentina. The samples were collected in the Mar del Plata Submarine Canyon on the Argentine Continental slope on board the R/V Puerto Deseado at 2,934 m depth in September 2013. Photographs of radulae, penises, and details of the ornamentation of the protoconch are provided. Detailed comparison of the specimens collected with the type material and several lots from northern Atlantic localities confirmed the identification.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"63 1","pages":"33 - 40"},"PeriodicalIF":1.3,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42206729","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}
A. Al-Saad, Zenaba Khatir, I. Al-maslamani, A. Leitão
ABSTRACT The diploid number and karyotype of three endemic and highly distributed species from the Qatari shores: Brachidontes variabilis (Krauss, 1848) (Mytilidae), Isognomon nucleus (Lamarck, 1819) (Pteriidae) and Neotrapezium sublaevigatum (Lamarck, 1819) (Trapezidae), are described for the first time. Brachidontes variabilis presented a diploid number of 2n = 30 and the karyotype included 2 metacentric, 6 submetacentric, 3 subtelocentric and 4 telocentric chromosome pairs. Isognomon nucleus had a diploid number 2n = 28 and the karyotype was comprised of 3 metacentric, 4 submetacentric and 7 subtelocentric chromosomal pairs and the karyotype of Neotrapezium sublaevigatum, with 2n = 36, included 5 metacentric, 9 submetacentric, 2 submetacentric/subtelocentric and 2 subtelocentric chromosome pairs. A review of the previously published cytogenetic studies in all three families was also performed, as well as a comparative karyological analysis within those families.
{"title":"Cytogenetic Characterization of Three Arabian Gulf Bivalve Species","authors":"A. Al-Saad, Zenaba Khatir, I. Al-maslamani, A. Leitão","doi":"10.4002/040.063.0105","DOIUrl":"https://doi.org/10.4002/040.063.0105","url":null,"abstract":"ABSTRACT The diploid number and karyotype of three endemic and highly distributed species from the Qatari shores: Brachidontes variabilis (Krauss, 1848) (Mytilidae), Isognomon nucleus (Lamarck, 1819) (Pteriidae) and Neotrapezium sublaevigatum (Lamarck, 1819) (Trapezidae), are described for the first time. Brachidontes variabilis presented a diploid number of 2n = 30 and the karyotype included 2 metacentric, 6 submetacentric, 3 subtelocentric and 4 telocentric chromosome pairs. Isognomon nucleus had a diploid number 2n = 28 and the karyotype was comprised of 3 metacentric, 4 submetacentric and 7 subtelocentric chromosomal pairs and the karyotype of Neotrapezium sublaevigatum, with 2n = 36, included 5 metacentric, 9 submetacentric, 2 submetacentric/subtelocentric and 2 subtelocentric chromosome pairs. A review of the previously published cytogenetic studies in all three families was also performed, as well as a comparative karyological analysis within those families.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"63 1","pages":"41 - 50"},"PeriodicalIF":1.3,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46401821","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}
ABSTRACT The original description of Helicina weyrauchi Haas, 1948, was based on shell material, as is the case for several helicinids in South America. We redescribe the species based on freshly collected material and provide the first anatomical description of a member of Helicinidae from northern Peru. The shell is characteristically white, with the first three whorls dark yellow; mantle with irregular dark spots on the dorsal surface, two pairs of odontophore cartilages and a narrow middle one. The male reproductive system consists of a prostate with glandular and collector regions, while the female reproductive system has a small and ovoid seminal receptacle, elongated provaginal sac with irregular projections with its stalk joining mesially, and oviduct aperture in the cloaca, near the mantle border. Records of H. weyrauchi are limited to the seasonally dry tropical forest of the Marañón River, which might indicate that this species is endemic to this ecosystem.
{"title":"Redescription of Helicina weyrauchi Haas, 1948 (Helicinidae) from the Marañón Dry Forest of Northern Peru","authors":"A. Ampuero, R. Ramírez","doi":"10.4002/040.063.0103","DOIUrl":"https://doi.org/10.4002/040.063.0103","url":null,"abstract":"ABSTRACT The original description of Helicina weyrauchi Haas, 1948, was based on shell material, as is the case for several helicinids in South America. We redescribe the species based on freshly collected material and provide the first anatomical description of a member of Helicinidae from northern Peru. The shell is characteristically white, with the first three whorls dark yellow; mantle with irregular dark spots on the dorsal surface, two pairs of odontophore cartilages and a narrow middle one. The male reproductive system consists of a prostate with glandular and collector regions, while the female reproductive system has a small and ovoid seminal receptacle, elongated provaginal sac with irregular projections with its stalk joining mesially, and oviduct aperture in the cloaca, near the mantle border. Records of H. weyrauchi are limited to the seasonally dry tropical forest of the Marañón River, which might indicate that this species is endemic to this ecosystem.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":"63 1","pages":"21 - 31"},"PeriodicalIF":1.3,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42054355","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}
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