Swelling bladder snail

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Swelling bladder snail
Physa fontinalis

Physa fontinalis

Systematics
Subordination : Water lung snails (Basommatophora)
Superfamily : Planorboidea
Family : Bladder snails (Physidae)
Subfamily : Physinae
Genre : Physa
Type : Swelling bladder snail
Scientific name
Physa fontinalis
( Linnaeus , 1758)

The source bladder snail ( Physa fontinalis ) is a freshwater snail lung from the family of bladder snails (Physidae).

features

Their case is seven to 12 mm high and four to seven mm wide. The left-hand winding case has four whorls, the apex is rounded. The case is thin-walled, translucent and shiny. The body color is yellow-brown to black-blue. The antennae are bright, the eyes on the antenna base. Your foot is long and thin, the coat reaches over the housing. Spring bladder snails are hermaphrodites .

Habitat and Distribution

The spring bladder snail is an opportunist . It colonizes clear, plant-rich still and flowing waters as well as moderately polluted waters. It is widespread in Central Europe and has also been detected in Lake Caldonazzo in northern Italy . It can be found everywhere in Germany, but less often in the south. The saprobic index for this species is 2.2.

swell

  • Karsten Grabow: Color Atlas Freshwater Fauna Invertebrates Eugen Ulmer GmbH & Co, Stuttgart (Hohenheim) 2000, ISBN 3-8001-3145-5

Individual evidence

  1. ↑ Physa fontinalis in the Red List of Threatened Species of the IUCN 2013.1. Posted by: D. Van Damme, 2011. Retrieved July 3, 2013.
  2. ↑ Population of some lakes in Trentino - Museo Tridentino di Scienze Naturali ( Memento of the original from December 20, 2007 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (Italian, accessed September 30, 2009; PDF; 24 kB)  @1@ 2Template: Webachiv / IABot / www.mtsn.tn.it
  3. ↑ Meyer, Detlef .: Macroscopic biological field methods for assessing the water quality of rivers: with lists of species for beginning and experienced investigators and detailed descriptions and images of the indicator organisms . 4th, unchanged. BUND, Hannover 1990, ISBN 3-9800871-4-X .

Web links