Tudorella ferruginea
| Tudorella ferruginea | ||||||||||||
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Tudorella ferruginea |
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| Scientific name | ||||||||||||
| Tudorella ferruginea | ||||||||||||
| ( Lamarck , 1822) |
Tudorella ferruginea , disuse also Balearic mouthed snail called, is a living on the land snails - kind from the family of pomatiidae (Pomatiidae) in the order of sorbeoconcha .
features
The right-hand winding cases are 18 to 22 mm high and 10 to 11 mm wide. They have 5.5 to 6 moderately arched coils, which are separated from one another by a moderately deep seam. They are conically shaped and comparatively slim. The apex is blunt. The ornamentation consists of coarse spiral ribs and less prominent, dense, fine radial ribs. The mouth is egg-shaped with a tightly angled top. The mouth height is approximately one third of the total housing height. The inside of the mouth is brownish-orange. The edge of the mouth is not interrupted and colored white. It has no contact with the penultimate turn. The navel scratch is indicated under the curve of the last turn.
The protoconch is smooth, the first turn is yellowish-orange, the remaining turns are reddish-brown with light spots, the last turn is particularly intensely colored.
The animals are of separate sex. A slight sexual dimorphism can also be seen in the housings. The females are on average significantly larger (17.3 to 19.1 high, 9.6 to 10.9 mm wide) than the males (15.7 to 17.7 mm high, 8.8 to 9.3 mm wide) ). In the male sexual apparatus, the sex glands ("testes") are located in the uppermost coils, surrounded by the digestive gland. The tree-like structure of the sex gland is formed by a series of branched tubes that unite to form a conductor. The spermatic duct is long, thin and often placed in short loops before it opens into the spindle-shaped, slightly curved prostate. A short thin conductor connects the prostate with the proximal part of the penis. This is thick and bent into a U-shape before it merges into the thickened distal end part of the penis. This is only about a third of the length of the proximal part. This ends in a blunt-rounded tip with a rounded thickening on the side.
The female sexual apparatus is also located in the uppermost turns. The sex gland ("ovaries") is a simple, whitish tube that is embedded in the digestive gland. From the sex gland a thin ladder, with little loops in the distal part, leads to the seminal vesicle, which is surrounded by the very large albumin gland. From there the fallopian tube leads past the capsular gland to the mantle cavity.
The foot is divided in two longitudinally by a central furrow. The operculum is flat and has the same color as the case. It sits centrally on the back of the foot. It has an eccentrically located nucleus .
The radula has seven teeth per transverse row. The large central tooth usually has seven points, more rarely up to nine, whereby the central point is larger than the lateral points. The posterior teeth, two on each side, are significantly smaller than the central tooth and diverge outward in relation to the central tooth. They have 5 to 7 tips. The marginal tooth, one on each side, has 13 to 16 tips.
Similar species
The Tudorella mauretanica , which occurs in southern Spain, southern Portugal and Morocco , is distinguished by the 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 of the species is limited to the eastern Balearic Islands ( Mallorca , Menorca , Cabrera , Dragonera ). The species lives in pine forests, under stones and bushes and in the macchia from sea level to the "highest peaks".
19th century authors also reported this species from North Africa, but Paul Pallary demonstrated that the species does not occur there. The species has also been proven to be fossilized on the Balearic island of Ibiza and in the Middle to Upper Pliocene Nuraghe Casteddu Formation on Sardinia . It was found in Pliocene sediments on Mallorca and Menorca.
Taxonomy
The taxon was established by Jean-Baptiste Lamarck in 1822 as Cyclostoma ferrugineum . It was then z. T. also put to Tudora Baird, 1850. Paul-Henri Fischer established the new genus Tudorella for this taxon ; it is their type by monotype .
supporting documents
literature
- Rosina Fechter, Gerhard Falkner: Mollusks. (Steinbach's natural guide 10). Mosaik-Verlag, Munich 1990, ISBN 3-570-03414-3 , p. 122.
- Ruth Jesse, Errol Véla, Markus Pfenninger: Phylogeography of a Land Snail Suggests Trans-Mediterranean Neolithic Transport. In: PLoS ONE. 6 (6): e20734. 2011 doi : 10.1371 / journal.pone.0020734
- 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. In: Molecular Phylogenetics and Evolution. 54, 2010, pp. 427-436, 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. Planet Poster Ed., Göttingen 2012, ISBN 978-3-933922-75-5 .
- Miguel Ibáñez, María Rosario Alonso: Observaciones anatomicas sobre Tudorella ferruginea (Lamarck, 1822) (Mollusca, Prosobranchia, Pomatiasidae). In: Boletin de la Sociedad de Historia Natural de Baleares. 23, 1979, pp. 69-78. (PDF; 689 kB)
Individual evidence
- ↑ Fechter, Falkner: Mollusks. 1990, p. 122.
- ↑ Fauns Endèmica: Evidència d'Evolució. Endemic fauna: evidencia de evolución. Endemic fauna: evidence of evolution. The endemic fauna: witness to evolution. In: Colleció. 6: p. 45. Galería Balear d'Espècies 2009 (PDF, 12 MB)
- ^ Paul Pallary: Les Cyclostomes du N.-O. de l'Afrique. In: La Feuille des jeunes naturalistes. 3.série, 29 (338), p. 21, Paris Online at www.biodiversitylibrary.org
- ↑ N. Torres, JA Alcover: Presencia de Tudorella ferruginea (Lamarck, 1822) (Gastropoda: Pomatiasidae) a l'Ilha d 'Eivissa. In: Boletin de la Sociedad de Historia Natural de Baleares. 25, Palma de Mallorca, 1981, pp. 185-188. (PDF; 228 kB)
- ↑ Sebastiano Barca, Carlo Spano, Tiziana Ticca: Definizione lito-biostratigrafica delle unità formazionali del tardo Paleogene e Neogene del Nord Sardegna e della Corsica. In: Rendiconti Seminario Facoltà Scienze Università Cagliari. 72 (1), pp. 109–120, Cagliari 2002 (PDF; 47 kB)
- ^ Josep Quintana Cardona: Els molluscs terrestres i d'aigua dolça. In: Documents tècnics. 3, pp. 1–3, 2007 [web2.cime.es/lifebasses/descargas/lifebasses98.pdf#2 (PDF)]
- ↑ Jean-Baptiste de Lamarck: Histoire naturelle des animaux sans vertèbres, présentant les caractères généraux et particuliers de ces animaux, leur distribution, leurs classes, leurs familles, leurs genres, et la citation des principales espèces qui s'y rapportent; précédée d'une introduction offrant la détermination des caractères essentiels de l'animal, sa distinction du végétal et des autres corps naturels, enfin, l'exposition des principes fondamentaux de la zoologie. Tome sixième. 2me. partie, Paris 1822, p. 147. (online at www.biodiversitylibrary.org)
