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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A live individual of the duck mussel, Anodonta anatina.
The native distribution of this species is European-Siberian. It was formerly common in such places but has been displaced by excess siltation, eutrophication and, recently, by the invasive zebra mussel Dreissena polymorpha.
Check-list of the molluscs Mollusca of the Czech Republic. Diffuse pollution has affected most areas and dissolved oxygen levels are reduced in many lakes to anodlnta low levels in the summer months. Breeding depends upon the presence of reasonable water quality and of fish. Similar species See Species Description 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. Host fishes are among others Perca fluviatilis, Gobio gobio and various local species, in N Germany Salmo trutta, Gasterosteus aculeatus and Leuciscus leuciscus.
The duck mussel is a large bivalve mollusc which lives in lakes and slow-flowing rivers where the bottom sediments are coarse.
Reproductive cycle and strategy of Anodonta anatina (L., 1758): notes on hermaphroditism.
Show history of this page. Embryonal shell smoother than in A. Shell very variable, usually greenish yellow, brown or black, aantina solid, often twice as heavy as A. List of all species.
Views Read Edit View history. 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, glossy green, sometimes brown appearance marked with strong concentric growth lines.
An annotated list of the land and freshwater Mollusca of Northern Ireland. Calm rivers, river bays, lakes, creeks, in muddy or sandy substrate, usually m deep, not below 20 m, tolerates slightly faster water currents than A.
In this way large beds of duck mussel along the Shannon and Erne River systems have perished and enormous numbers of empty shells cast ashore.
AnimalBase :: Anodonta anatina species homepage
Hermaphroditic animals may occasionally occur. Freshwater mussels have decreased dramatically in Iberia over the last anodojta. In Switzerland in up to m altitude, usually below m, higher than the other freshwater mussels. Decline in water quality in lowland lakes and rivers from diffuse anoodonta with attendant. Gametogenesis was continuous in both sexes and germinal epithelium in early stages of development. Generally threatened by continuous destructions of habitats, water pollutions and agricultural fertilization.
Threatened both in Ireland and Europe by diffuse pollution and the resultant periodic de-oxygenation of waters.
Under this view a better knowledge on the biological features of these animals is extremely important for future conservation and management actions.
Overall, this study indicates that for more efficient conservation actions and management plans, freshwater mussel reproductive biology should be studied at the population level mainly in the subfamily Anodontinae. The duck mussel Anodonta anatina is a species of freshwater musselan anayina bivalve mollusk in the family Unionidaethe river mussels.
IUCN Red List of Threatened Species
Support environmental schemes aimed at reducing diffuse pollution whether from agricultural sources, from inadequate sewage treatment in towns or from the malfunctioning or failure of septic tanks in rural areas.
However, this increases where recent breeding and recruitment has been poor. Malacologica BohemoslovacaSuppl. Local forms are increasingly threatened by uniform forms introduced with gamefish Falkner The story may not end there, however, as the zebra mussel infestation is now waning and there is hope that the duck mussel can regain some of the territory lost to its competitor.
This page was last edited on 3 Aprilat