Theodoxus danubialis - february 2020

Рет қаралды 1,082

4 жыл бұрын

Пікірлер: 5

@badrilifeisfreedomofchoice7312 4 жыл бұрын

Theodoxus danubialis (Pfeiffer, 1828) Species name:Theodoxus danubialis (Pfeiffer, 1828) Taxon name:Nerita danubialis Pfeiffer, 1828 Originally described in:Pfeiffer, C. 1828. Naturgeschichte deutscher Land- und Süsswasser-Mollusken. Dritte Abtheilung. - pp. I-VI [= 1-6], 1-84, Taf. I-VIII [= 1-8]. Weimar. (Landes-Industrie-Comptoir). Distribution:Danube river region from Kelheim (Germany) to Bulgaria, Lakes and rivers from N Italy to Slovakia, Ukraine and Bosnia-Hercegovina Diagnosis:Shell whitish or yellowish with dark zigzag pattern, in the east also uniformly black, aperture almost circular. Operculum pale yellow with light brownish margin, apophysis flat and in a groove. Size:8-9 x 6-7 mm Biology:In rivers and lakes, prefers clean and well-oxygenated water currents with stony substrate. Threatened:Has dramatically declined in Austria, the last populations in Donauauen National Park seem to have been lost due to mismanagement of the National Park administration. Critically endangered in Germany and Austria, endangered in Czech Republic. Family:Neritidae Higher group:Gastropoda Comments:Reference: Grossu 1981: 155 (Dnepr, Bug, Dnestr, Danube and tributaries), Falkner 1990: 114, Glöer 2002: 54, Reischütz 2009, Welter-Schultes 2012: 27 (range map), Hirschfelder et al. 2018 (extinct in Bavarian Danube, present in Vils river).

@sebastianpuzon5041 4 жыл бұрын

where did you get these?

@badrilifeisfreedomofchoice7312 6 ай бұрын

Got it in an aquarium shop, most of them are there 🤗 otherwise there are them in the Danube and Sava rivers that flow by Belgrade 😇, they reproduce relatively quickly and the most interesting thing is that they don't grow big, the biggest one in my place is 1 cm, big greetings from 🇷🇸