IF 1.3 4区生物学

Malacologia Pub Date : 2024-01-24 DOI: 10.4002/040.066.0103

Ximena Maria Constanza Ovando, Luiz Eduardo Macedo de Lacerda, D. A. da Silva, S. B. dos Santos

引用次数: 0

Deep Genetic Divergence Over Small Geographic Scales in Cryptic Allospecies of the Threatened Semperdon Land Snails of Belau (Republic of Palau, Oceania) (Stylommatophora: Charopidae) 贝劳（帕劳共和国，大洋洲）濒临灭绝的森珀顿陆地蜗牛（Stylommatophora: Charopidae）隐秘同种在小地理尺度上的深度遗传差异

IF 1.3 4区生物学

Malacologia Pub Date : 2024-01-24 DOI: 10.4002/040.066.0102

Morgan K. Bullis, R. J. Rundell

引用次数: 0

Habit and Behaviour of the Nestling Bivalve Gregariella semigranata (Reeve, 1858) from the Mediterranean Coralligenous 地中海珊瑚礁双壳类雏鸟的习性和行为 Gregariella semigranata (Reeve, 1858)

IF 1.3 4区生物学

Malacologia Pub Date : 2024-01-24 DOI: 10.4002/040.066.0104

R. Sanfilippo, Gemma Donato, A. Reitano, D. Serio, V. Bracchi, Mauro Pietro Negri, Daniela Basso, A. Rosso

引用次数: 0

Salinity Tolerance of Non-Native Heterobranch Sea Slug Haloa japonica Pilsbry, 1895 非本地异枝海蛤蝓 Haloa japonica Pilsbry, 1895 的耐盐性

IF 1.3 4区生物学

Malacologia Pub Date : 2024-01-24 DOI: 10.4002/040.066.0105

D. Trkov, Eva Praprotnik, L. Lipej

引用次数: 0

Phylogeny and Systematics of Fossil and Recent Vermicularia (Caenogastropoda: Turritellidae) 化石和新近蛭类（腔腹纲：蛭科）的系统发育和系统学

IF 1.3 4区生物学

Malacologia Pub Date : 2024-01-24 DOI: 10.4002/040.066.0101

Brendan M. Anderson, Warren D. Allmon

引用次数: 0

Macroinvertebrates in the Diet of the Apple Snail Pomacea canaliculata in Its Native Range 苹果蜗牛在其原生范围内的大型无脊椎动物

IF 1.3 4区生物学

Malacologia Pub Date : 2022-12-28 DOI: 10.4002/040.065.0104

Mara Anahí Maldonado, E. Manara, P. Martín

{"title":"Macroinvertebrates in the Diet of the Apple Snail Pomacea canaliculata in Its Native Range","authors":"Mara Anahí Maldonado, E. Manara, P. Martín","doi":"10.4002/040.065.0104","DOIUrl":"https://doi.org/10.4002/040.065.0104","url":null,"abstract":"ABSTRACT The study of diet and how a species obtains food is relevant to understand its role within natural environments. The apple snail Pomacea canaliculata (Lamarck, 1822) is a freshwater dweller that primarily consumes aquatic macrophytes and detritus but also incorporates resources of animal origin in its diet. Our aim was to investigate the ingestion of macroinvertebrates by P. canaliculata in four watercourses from its native range by analyzing its digestive contents. The frequency of occurrence of animal remains in the digestive contents of P. canaliculata snails was 68.50% across different seasons, with values of more than 50% in each of the watercourses studied. The spring-summer contents showed high frequencies of animal remains, whereas in autumn they were recorded only in 10% of the contents from one of the watercourses. The macroinvertebrates ingested belonged to six different insect orders, crustaceans, mites, bivalves, and gastropods. The frequencies of occurrence were higher for arthropods than for mollusks in two watercourses and similar in the other two. In two watercourses, the relative abundances of mollusks were higher than those of arthropods and the opposite was true in the other two. The number of individuals ingested by an average P. canaliculata was highest for the snail Heleobia parchappii, followed by arthropods, H. parchappii eggs, and the snails Physella acuta and Chilina parchappii. Most ingested macroinvertebrates were small, slow or with little or no mobility, such as snails and case-bearing insects. Arthropods able to swim or to swiftly escape, such as Amphipoda and nymphs of Odonata and Ephemeroptera, were not detected at all in the digestive contents. Ingestion of macroinvertebrates appears to be opportunistic and even accidental and probably depends more on their microhabitats or behavior than on preferences of P. canaliculata. Notwithstanding, the high frequency of ingestion observed on some species of snails could have a significant negative effect on the abundance of their populations.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45569268","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

Hyperstrophic Malformation of Lunella correensis (Récluz, 1853) (Vetigastropoda: Turbinidae) 科雷氏圆线虫的高营养畸形（Récluz，1853）（兽脚目：圆线虫科）

IF 1.3 4区生物学

Malacologia Pub Date : 2022-12-28 DOI: 10.4002/040.065.0110

Taro Yoshimura, Takenori Sasaki

引用次数: 0

A New Species of Lepidochitona (Polyplacophora: Mopalioidea) from the Panamic Province 标题广西鳞翅目一新种(鳞翅目:鳞翅目总科)

IF 1.3 4区生物学

Malacologia Pub Date : 2022-12-28 DOI: 10.4002/040.065.0103

B. Sirenko, Adriana REYES-GÓMEZ, Cedar I. García-Ríos, C. Ibáñez

引用次数: 0

Stable Isotopes Reveal Algal Assimilation in the Carnivorous Sea Slug Pleurobranchaea maculata (Quoy & Gaimard, 1832) on Patagonian Coasts 稳定同位素揭示了巴塔哥尼亚海岸食肉海蛞蝓Pleurobranchaea maculata (Quoy & Gaimard, 1832)中藻类的同化

IF 1.3 4区生物学

Malacologia Pub Date : 2022-12-28 DOI: 10.4002/040.065.0106

V. Bökenhans, D. Galván, G. Bigatti, A. Averbuj

{"title":"Stable Isotopes Reveal Algal Assimilation in the Carnivorous Sea Slug Pleurobranchaea maculata (Quoy & Gaimard, 1832) on Patagonian Coasts","authors":"V. Bökenhans, D. Galván, G. Bigatti, A. Averbuj","doi":"10.4002/040.065.0106","DOIUrl":"https://doi.org/10.4002/040.065.0106","url":null,"abstract":"ABSTRACT Exotic species that achieve successful invasions often show considerable dietary plasticity in resource choice, sometimes adjusting their diet to new or variable resources. This can increase species' impact in the recipient environment. In this study, we explore the diet of the invasive gray side-gilled sea slug Pleurobranchaea maculata (Quoy & Gaimard, 1832) in two environments with contrasting presence of algae (different depths) on northern Patagonian coasts, by means of stable isotope analysis. Results showed the most probable prey contribution to the diet of shallow individuals of P. maculata to be algae, whereas colonial tunicates were the preferred prey in deep environments. Therefore, we suggest that P. maculata behaves as an omnivorous species in the receiving community, because it consumes and assimilates the algae, which represents a dietary shift compared to their original feeding habits (carnivorous). This species exhibited the ability to adapt to different dietary resources by showing significant differences in niche locations, niche breadth, and exhibiting little to no overlap between different environments, which supports the previous description of P. maculata as a generalist consumer. Pleurobranchaea maculata's dietary plasticity might drive ecological consequences in the invaded community. Thus, it is important to monitor for future changes in the benthic community to develop efficient programs for the management of this invasive voracious species.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43236875","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

Taxonomy and Biogeography of Bivalves of the Genus Cuspidaria Nardo, 1840, from the Southern Southwestern Atlantic Deep Sea 西南大西洋南部深海Cuspidaria Nardo属双瓣动物的分类学和生物地理学，1840年

IF 1.3 4区生物学

Malacologia Pub Date : 2022-12-28 DOI: 10.4002/040.065.0109

Leonel Ivan Pacheco, V. Teso, G. Pastorino

{"title":"Taxonomy and Biogeography of Bivalves of the Genus Cuspidaria Nardo, 1840, from the Southern Southwestern Atlantic Deep Sea","authors":"Leonel Ivan Pacheco, V. Teso, G. Pastorino","doi":"10.4002/040.065.0109","DOIUrl":"https://doi.org/10.4002/040.065.0109","url":null,"abstract":"ABSTRACT In this paper, a taxonomic review of the bivalves of the genus Cuspidaria Nardo, 1840 from the southern southwestern Atlantic is conducted. Specimens deposited in malacological collections and samples collected onboard the R/V Puerto Deseado off Mar del Plata (∼36°S) and MPA Namuncurá/Burdwood Bank area (∼54°S), between 200 and 3,000 m depth, are the focus of this revision. The specimens were analyzed through conchological and anatomical features. The geographic and bathymetric distributions for each species are provided and possible factors determining biogeographic patterns are discussed. As a result, Cuspidaria infirma n. sp., Cuspidaria cancellata n. sp., Cuspidaria namuncura n. sp., and Cuspidaria cf. kerguelensis (Smith, 1885), are described. In addition, Cuspidaria exigua (Jeffreys, 1876), Cuspidaria bicarinata Jeffreys, 1882, Cuspidaria platensis (Smith, 1885), Cuspidaria tenella Smith, 1907, Cuspidaria infelix Thiele, 1912, and Cuspidaria barnardi Knudsen, 1970 are redescribed after the study of new specimens. Elliptic Fourier analyses were performed for each side of the shell to delimit species objectively using their shape. Results showed a clear differentiation on both valves among species. Cuspidaria bicarinata and Cuspidaria exigua, both North Atlantic species, were recorded for the first time in the southwestern Atlantic, and Cuspidaria infelix and Cuspidaria tenella, both Antarctic/sub-Antarctic species, expanded their distribution northwards. Two cluster analyses, for species and areas respectively, revealed a vertical zonation, separating species into two different groups highly corresponding to deep-sea water mass distributions.","PeriodicalId":49895,"journal":{"name":"Malacologia","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42055991","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

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