ANODONTA ANATINA PDF

Species name: Anodonta anatina (Linnæus, ). Anodonta-anatina_jpg are better tolerated than by Unio pictorum, but less than by Anodonta cygnea. A more oval shell than A. cygnea, with umbos nearly central. Periostracum glossy , more often green than brown. The shell is thicker in front than behind and. Anodonta anatina (L., ) Family: Unionidae. The duck mussel is a large bivalve mollusc which lives in lakes and slow-flowing rivers where the bottom.

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Duck mussel

Acknowledgements Contact us Cookie Policy Habitas. Pictures of Anodonta anatina. Archived from the original on Species description A large bivalve shell with a flattened profile and broad, somewhat wedge-shaped appearance. Duck mussel A live individual of the duck mussel, Anodonta anatina Conservation status. Swan mussel shells appear to be of even thickness throughout, whereas duck mussel shells are clearly uneven and much thicker and opaque towards the lower front end.

The native distribution of this species is European-Siberian.

Similar species See Species Description How to see this species Duck mussels can sometimes be seen from fishing stands anidonta jetties on lakeshores where the bottom is of clean sand or silt. Wikimedia Commons has media related to Anodonta anatina. Down, BT18 0EU; cedar. These animals are responsible for important ecosystem services such as recycling nutrients and improving water clarity.

It also has a shallower, more flattened shell with the interior less deeply coated with nacre. Gametes were present throughout anatima reproductive cycle. The dorsal upper margin is usually nearly parallel to the ventral lower margin giving the shell an oblong shape, rather than being angular.

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Diffuse pollution has affected most areas and dissolved oxygen levels are reduced in many lakes to dangerously low levels in the summer months.

Nomenclator Zoologicus Neave updated, genera. The duck mussel is a large bivalve mollusc which lives in lakes and slow-flowing rivers where the bottom sediments are coarse. List of failure reports.

Gametogenesis was continuous in both sexes and germinal epithelium in early stages of development. In other projects Wikimedia Commons. Zebra mussels are unable to colonise streams in which water flow is significant and it is thought that these may act as reservoirs of native mussels and assist in re-colonisation of slower-flowing water-bodies.

Host fishes are among others Perca fluviatilis, Gobio gobio and various local species, in N Germany Salmo trutta, Gasterosteus aculeatus and Leuciscus leuciscus.

Generally threatened by continuous destructions of habitats, water pollutions and agricultural fertilization. Under this view a better knowledge on the biological features of these animals is extremely important for future conservation and management actions. On a still, sunny day look down at the lake bottom with Polaroid glasses or using a glass-bottomed box. Previous studies described A. Show history of this page.

From Wikipedia, the free encyclopedia. Why is this species a priority in Northern Ireland?

For the sex-ratio and hermaphroditism assessments a variable number of individuals were collected from several populations from lakes and rivers. Local forms are increasingly threatened by uniform forms introduced with gamefish Falkner Malacologica BohemoslovacaSuppl. How to see this species Duck mussels can sometimes be seen from fishing stands or jetties on lakeshores where the bottom is of clean sand or silt.

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Eutrophic conditions are better tolerated than by Unio pictorum, but less anodknta by Anodonta cygnea. The duck anoodonta Anodonta anatina is a species of freshwater musselan aquatic bivalve mollusk in the family Unionidaethe river mussels.

The shell is thin and pale, whitish or pearly inside due to a thin layer of nacre, but protected by a periostracum outside which gives it a smooth, anodonha green, sometimes brown appearance marked with strong concentric growth lines.

Anodonta piscinalis Nilsson, This mussel is associated with relatively unpolluted slow rivers and lakes with sandy or gravelly bottoms, habitats which are in universal decline.

AnimalBase :: Anodonta anatina species homepage

By using this site, you agree to the Terms of Use and Privacy Policy. Threatened both in Ireland anodontaa Europe by diffuse pollution and the resultant periodic de-oxygenation of waters.

Animals in warm and eutrophic waters live only up to 5 years, in cool and oligothrophic smaller running waters up to 15 years. Articles with Czech-language external links All articles with dead external links Articles with dead external links from December Articles with permanently dead external links CS1 maint: After a period of some weeks the glochidia metamorphose and drop off to begin an independent life on the bottom.