9th European Congress of Malacological Societies

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Size-frequency distribution variation in an intertidal polyplacophora along a tropical latitudinal gradient

Size-frequency distribution variation in an intertidal polyplacophora along a tropical latitudinal gradient

Guillen C., Marquez-Farias J.F, Avila-Poveda O.H camilaguillen_posgrado@uas.edu.mx; oavila@uas.edu.mx   The Bergmann’s Rule (described first for endothermic organisms, later for ectothermic taxa) established that intraspecifically the organisms of populations which live at colder climate (high latitudes) tend to have larger body sizes than those which live at warmer climate (low latitudes); and the Temperature-Size Rule (which …

From the Mediterranean to Patagonia: studying Rumina decollata (Linnaeus 1758), a non-native snail in Argentina, through a citizen science project

From the Mediterranean to Patagonia: studying Rumina decollata (Linnaeus 1758), a non-native snail in Argentina, through a citizen science project

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Guerrero Spagnuoli J., Dop N.S., Pizá J. juliangsfull@gmail.com Rumina decollata is native to the Mediterranean region but has a worldwide distribution due to accidental or voluntary introductions in several countries of Asia, Africa and America. Its biological characteristics (facultative self-fertilization, high reproductive potential, omnivory and xeroresistance) favored the establishment and colonization in new environments. In …

Escherichia coli Isolated from Potomida littoralis and Margaritifera margaritífera: phylogenetic group determination

Escherichia coli Isolated from Potomida littoralis and Margaritifera margaritífera: phylogenetic group determination

Gomes S., Piteira M., Fernandes C., Varandas S., Saavedra M.J. sagomes@icbas.up.pt Antimicrobial resistance (AMR) is a major global health problem. Water use by human activities represent a natural reservoir of AMR, thus a time-integrated approach is required in aquatic ecosystems. Freshwater bivalves are widely applied as accumulation indicators and monitoring tools of contaminant effects on …

Contribution to the land snail fauna of olive orchards in Crete (Greece)

Contribution to the land snail fauna of olive orchards in Crete (Greece)

Georgopoulou E., Gkisakis V., Kabourakis E. elsa@nhmc.uoc.gr Cultivated land is rarely surveyed for land snails. In this study, we investigated, for the first time, the land snail fauna of olive orchards situated in western Messara valley in Crete (Greece). We surveyed bimonthly, from November 2019 till October 2020, 16 olive orchards located in two agroecological …

First comprehensive molecular phylogeny reconstruction of the family Milacidae (Gastropoda: Eupulmonata)

First comprehensive molecular phylogeny reconstruction of the family Milacidae (Gastropoda: Eupulmonata)

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Gąsienica P., Stec D., Lachowska-Cierlik D., Zając K. S. gasienicapaulina03@gmail.com Milacidae, is a family of slugs, which include medium-sized species. Currently, more than 50 species belonging to this family are grouped into two genera: Milax Gray, 1855 and Tandonia Lessona & Pollonera, 1882. Until now, the GenBank database contains sequences for only one species of …

New data on nudibranch fauna in the North-West Pacific revealed an astonishing pseudocryptic diversity

New data on nudibranch fauna in the North-West Pacific revealed an astonishing pseudocryptic diversity

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Ekimova I.A., Mikhlina A.L., Stanovova M.V., Antokhina T.I., Schepetov D.M. irenekimova@gmail.com The North Pacific region is one of three major marine biodiversity origin hotspots, with high numbers of endemic taxa. However, while the North-East Pacific fauna is studied quite well due to contemporary USA and Canadian research programs, the biodiversity studies of another Pacific coast …

Solitary as an oyster? Neighbours, inquinilism, commensals and parasites of Ostrea puelchana

Solitary as an oyster? Neighbours, inquinilism, commensals and parasites of Ostrea puelchana

Doldan M.S., Rubilar T., Oehrens Kissner E.M., Kroeck M.A., Morsan E.M mdoldan@cenpat-conicet.gob.ar Oyster species play an important role in marine ecosystems, hosting a wide diversity of organisms. It has been stated that epibiosis entails both benefits and disadvantages for the oysters. However, studies of multiple biological interactions of organisms associated with oyster reefs are scarse. …

Environmental forcing on growth and recruitment of marine bivalve species at Northern Patagonia, Southwestern Atlantic

Environmental forcing on growth and recruitment of marine bivalve species at Northern Patagonia, Southwestern Atlantic

Doldan M. S., Gimenez L.H., Morsan E.M. mdoldan@cenpat-conicet.gob.ar In coastal ecosystems, the recruitment of bivalves is characterized by year-to-year variability. Annual cohorts often differ in the number of recruits, resulting in irregular pulses of high abundance (i.e., successful recruitment) followed by periods of scarcity (i.e., failing recruitment). Environmental forcing likely underlies these pulses as favourable …

Infestation of commercially reared bay scallops (Argopecten irradians) by the shell boring polychaete Polydora neocaeca on Nantucket Island

Infestation of commercially reared bay scallops (Argopecten irradians) by the shell boring polychaete Polydora neocaeca on Nantucket Island

David Andrew A. adavid@clarkson.edu Shellfish farming is quickly becoming the most expansive and profitable sectors of commercial aquaculture but is expected to face several challenges, including diseases. Shell-boring polychaete worms exert considerable stress on both wild and farmed molluscs by boring into the shells of scallops, oysters and abalone, where they weaken the structural integrity …

Introduction to the study of the population structure of Cymbula safiana (Lamarck, 1819) on the littoral of the province of Malaga (southern Spain)

Introduction to the study of the population structure of Cymbula safiana (Lamarck, 1819) on the littoral of the province of Malaga (southern Spain)

Cervera Lara M., Lozano-Francisco M. C. mclozano@uma.es Cymbula safiana (Lamarck, 1819) is listed as an endangered or threatened species in the Barcelona Convention of 1993; a strictly protected species in Annex II of the Bern Convention and an endangered species in the Red Book of Invertebrates of Andalusia. It is one of the two giant …