Search results for "mol·lusc"
showing 10 items of 24 documents
Primeros hallazgos del molusco marino invasor Pinctada radiata (Leach, 1840) (Bivalvia: F. Margaritidae) en la costa valenciana (España)
2021
Se dan a conocer por primera vez diversos hallazgos del molusco bivalvo marino lessepsiano Pinctada radiata en la costa valenciana, concretamente en la costa del Golfo de Valencia (España). Esta especie puede causar efectos negativos sobre el ecosistema, afectando a su biodiversidad autóctona. Se proporcionan datos conquiológicos de la concha y el mapa de distribución geográfica actual de esta especie en la costa valenciana y en el mediterráneo occidental. -- First findings of invasive marine mollusc Pinctada radiata (Leach, 1840) (Bivalvia: F. Margaritidae) on the Valencian coast (Spain). Several findings of the marine Lessepsian bivalve mollusc Pinctada radiata are disclosed for the first…
About the finding of the invasive geomitrid Xerolenta obvia (Menke, 1828) (Mollusca, Stylommatophora) in Andorra.
2022
An invasive snail population of Xerolenta obvia was discovered at the end of 2021 in Sant Julià de Lòria (Principat d'Andorra). This location, the first occurrence of this species for this country, is intermediate between the few locations in the south of France and the only known location in Spain. For its taxonomical determination, morpho-anatomical studies of the shell and the reproductive system have been carried out, and it has been compared with other species of geomitrids that are more similar based on the shell, such as Cernuella neglecta or Helicella itala and even, for less expert people, with Xerosecta cespitum arigonis, also present in Andorra. X. obvia is an i…
Ecological signature of the end-Triassic biotic crisis: what do bivalves have to say?
2012
In order to understand the causes underlying the Triassic-Jurassic (T/J) mass extinction, we tested different bivalve features for extinction selectivity, i.e. shell mineralogy, age at the Rhaetian and three main autoecologic traits (feeding mechanism, tiering and motility/attachment). Also, diversity and turnover rates throughout the Triassic and the Early Jurassic were analysed in detail. The dataset employed for this analysis was a precise database at genus level including data from Induan to Sinemurian times. Results point to a true mass extinction for bivalves around the T/J boundary. This extinction was not ageselective at the boundary. Certain analyses suggested that shell mineralogy…
A remarkable new record of the Iberian freshwater mollusc Corbellaria celtiberica Callot-Girardi & Boeters, 2012 (Gastropoda: Hydrobiidae) in Spain
2020
A new, isolated, population of the endemic Iberian hydrobiid Corbellaria celtiberica has been located, based on shells at the eastern foothills of the Iberian System (Province of Castellón, Valencian Community, Spain). The shells are biometrically studied and compared with shells from the type locality and with additional data from the literature. The finding of this new population considerably expands the previously known distribution area of the species.
Nuevos hallazgos de los gasterópodos Aplus assimilis (Reeve, 1846) (F. Pisaniidae) y Mitrella psilla (Duclos, 1846) (F. Columbellidae) en la costa me…
2020
espanolSe dan a conocer varios hallazgos de dos gasteropodos exoticos marinos Aplus assimilis y Mitrella psilla en los puertos pesqueros de la costa mediterranea espanola desde Sagunto (Valencia) hasta Sant Carles de la Rapita, en el delta del Ebro (Tarragona). Se proporcionan algunos datos conquiliologicos y los mapas de distribucion geografica actual de ambas especies en el Mediterraneo occidental catalaEs donen a coneixer diverses troballes de dos gasteropodes exotics marins Aplus assimilis i Mitrella psilla als ports pesquers de la costa mediterrania espanyola des de Sagunt (Valencia) fins a Sant Carles de la Rapita, al delta de l’Ebre (Tarragona). Es proporcionen algunes dades conquili…
Contribution to the knowledge of the terrestrial slugs (gastropoda, pulmonata) of the Maghreb
2017
As a result of recent malacological campaigns of our team in Algeria and Morocco, some previous samples, and after reviewing the literature, specially the recent papers about the Tunisian slugs, we produce a list of slugs of the Maghreb (Algeria, Morocco and Tunisia), with comments or discussion on each of the 17 species that form this list. We report for the first time Deroceras laeve (O.F. Müller, 1774) and Testacella haliotidea Draparnaud, 1801 in North Africa, although with reservations regarding the latter. We also report Lehmannia nyctelia (Bourguignat, 1861) for the first time in Morocco, concretely in the Chafarinas Islands, of Spanish sovereignty
Descripción de un nuevo geomítrido para la malacofauna española: Xerocrassa penalveri n. sp. (Mollusca, Gastropoda Stylommatophora).
2022
Se describe un nuevo geomítrido ibérico, Xerocrassa penalveri n.sp., que ha sido descubierto en Sierra Espuña en la Región de Murcia (SE España). Se caracteriza tanto a nivel conquiológico como del aparato reproductor además de la rádula y la mandíbula, y se compara con las especies de geomítridos más similares como Xerocrassa cobosi, X. edmundi y X. penchinati. Se realiza un estudio morfométrico de diversos órganos del aparato reproductor y de caracteres conquiológicos que permite su identificación. Estas especies de Xerocrassa se diferencian de X. penalveri n. sp. principalmente atendi…
Primer hallazgo de Ganula lanuginosa (Boissy, 1835) (Stylommatophora, Hygromiidae) en Europa continental
2021
Recientemente se ha descubierto una población bien establecida del higrómido Ganula lanuginosa en Xàtiva (Provincia de Valencia, España), correspondiendo a la primera localidad confirmada para la península ibérica y Europa continental. Es un caracol terrestre nativo del norte de África y conocido también de las islas mediterráneas europeas: Baleares (España), Cerdeña (Italia) y Córcega (Francia). Se han realizado estudios morfo-anatómicos de la concha y del aparato reproductor, y estas características se han comparado con las de los higrómidos más similares, lo que nos ha permitido su correcta identificación.
Characterization of the land snail Ganula lanuginosa (Boissy, 1835) (Mollusca: Hygromiidae): new invader of the Iberian Peninsula.
2021
Recently, a well-established population of the hygromiid Ganula lanuginosa has been discovered in the Iberian Peninsula, specifically in Xàtiva (Province of Valencia, Spain), corresponding to the first record for the Iberian Peninsula and the Continental Europe. It is a land snail native to North Africa and also known from the European Mediterranean islands, namely the Balearic Islands (Spain), Sardinia (Italy) and Corsica (France). Morpho-anatomical studies of the shell and the reproductive system have been carried out, and these features have been compared with those of the most similar hygromiids, which has allowed us to correctly identify them. In addition, parasitological and ec…
Iberian Distribution of the Freshwater Snail Genus Bithynia Leach, 1818 (Mollusca: Truncatelloidea), Vector of Opisthorchiasis and Metorchiasis
2021
Background: Opisthorchis felineus and Metorchis bilis are trematodes that cause opisthorchiasis and metorchiasis, respectively. The freshwater snails Bithynia hispanica and B. tentaculata are the respective intermediate hosts for these parasites in the Iberian Peninsula, where both parasites are present. Methods: To study the distribution of these snail species, an exhaustive literature review and revision of museum collections was performed. Results: A total of 370 localities were compiled and mapped. B. tentaculata were found throughout the Iberian Peninsula, both in Spain and Portugal, while B. hispanica was found only in the Mediterranean coast of Spain. Conclusion: Knowing the distribu…