Tudorella mauretanica
| Tudorella mauretanica | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Tudorella mauretanica | ||||||||||||
| Pallary , 1899 |
Tudorella mauretanica is a living on the land snails - kind from the family of pomatiidae (Pomatiidae) in the order of sorbeoconcha .
features
The right-hand twisted, solid-shell casing is egg-shaped-conical, a little bulbous. The size is gender dependent. The housings of the females are up to 25 mm high and 18.1 mm wide. The housing of the males is significantly smaller with a maximum height of 19.9 mm and a width of 14.65 mm. The housings have 5.5 to 6 convex turns, which are separated from each other by a deep seam and increase rapidly. The last turn takes up almost 75% of the total case height. This is separated from the penultimate turn and separated by a narrow gap. The Protokonch occupies 2 to 2.1 turns, which are smooth. Then a clear spiral stripe sets in at regular intervals, which intersects with a fine radial stripe. The mouth is rounded in the frontal view and is angled in the upper corner. The navel is small and open.
The calcified operculum is thick and has only two whorls. The nucleus is eccentric and lies closer to the edge of the spindle. It is yellowish-orange in color.
In the male reproductive system, the prostate is short and bulbous. The penis is curved in a U-shape. The proximal part is almost equally thick, the distal part of the penis is about 2.5 to 3 times as long as the proximal part. In the female reproductive system, the spermathec is short and thin and lies very close to the albumin gland and the capsular gland. The soft body is whitish with gray spots on the head and on both sides of the foot.
Similar species
Tudorella mauretanica differs from Tudorella ferruginea in its radula . The posterior teeth have only 3 to 5 tips, while Tudorella ferruginea has 5 to 7 tips. In the male sexual apparatus, the prostate in Tudorella ferruginea is spindle-shaped and slightly curved, while in Tudorella mauretanica it is short and bulbous. The main difference between the two types is the different structure of the penis: in Tudorella ferruginea the distal part is only about a third as long as the U-shaped proximal part, while in Tudorella mauretanica the distal part is about 2.5 to 3 times as long as the proximal part.
Geographical distribution and habitat
The distribution area is limited to the Rif Mountains in eastern Morocco and western Algeria and a few localities on the Mediterranean coast of Spain (provinces Alicante and Granada ). It lives there in habitats near the coast up to about 100 m above sea level. The animals live most of the time buried in the ground and hidden under limestone cliffs and only become active in damp weather.
Danger
The species is classified as "Endangered" in Spain. In 1996, an endangered population in the province of Alicante was successfully relocated. The only known population in the province of Granada is critically endangered. In 2009 only two living specimens were found, otherwise only empty cases. In the province of Alicante, too, four of the 11 known populations have already died out.
Taxonomy
The taxon was established in 1899 by Paul Pallary as Cyclostoma mauretanicum . The publication date in the literature usually appears to be 1898; however, the 46th volume of the Journal de Conchyliologie "for the year 1898 did not appear until 1899. The Spanish populations were mostly identified with Tudorella sulcata and only recently identified with this species. The Fauna Europaea accepts Tudorella mauretanica as a separate species.
supporting documents
literature
- Alberto Martínez-Ortí, Miren Arantzazu Elejade, Maria José Madeira, Benjamín Gómez-Moliner: Morphological and DNA-based taxonomy of Tudorella P. Fischer, 1885 (Caenogastropoda: Pomatiidae). Journal of Conchology, 39: -568, 2008 PDF
- Markus Pfenninger, Errol Véla, Ruth Jesse, Miren Arantzazu Elejalde, Fabio Liberto, Frédéric Magnin, Alberto Martínez-Ortí; Temporal speciation pattern in the western Mediterranean genus Tudorella P. Fischer, 1885 (Gastropoda, Pomatiidae) supports the Tyrrhenian vicariance hypothesis. Molecular Phylogenetics and Evolution, 54: 427-436, 2010 doi : 10.1016 / j.ympev.2009.09.024
- Francisco W. Welter-Schultes: European non-marine molluscs, a guide for species identification = identification book for European land and freshwater mollusks. A1-A3 S., 679 S., Q1-Q78 S., Göttingen, Planet Poster Ed., 2012 ISBN 3-933922-75-5 , ISBN 978-3-933922-75-5
Individual evidence
- ^ Alberto Martínez-Ortí: Sobre el hallazgo reciente de una poblacion de Tudorella mauretanica (Pallary, 1898) en el NW de Argelia. Noticiario SEM, 51: 52–54 PDF ( Memento of the original dated June 6, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ A b Alberto Ortí, José Ramón Arreból: Tudorella maurentanica (Pallary, 1898). In: Atlas y Libro Rojo de los Invertebrados Amenazados de España (Especies Vulnerables). Volume II, pp. 1225-1231 PDF
- ^ Paul Pallary: Deuxième à l'étude de la faune malacologique du nord-ouest de l'Afrique. Supplement to "La Faune Malacologique du Maroc" by A. Morelet. Journal de Conchyliologie, 46: 49-170, Paris 1899 Online at www.biodiversitylibrary.org (p. 131).
- ↑ Fauna Europaea: Tudorella mauretanica (Pallary 1898)
