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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These animals are responsible for important ecosystem services such as recycling nutrients and improving water clarity. Home Introduction Selection Criteria:: It can reach 80 mm anatinw length and has a nearly straight dorsal upper or hinge margin which is usually at an acute angle to the ventral lower margin.
IUCN Red List of Threatened Species
A live individual of the duck mussel, Anodonta anatina. Down, BT18 0EU; cedar. Archived copy as title Articles with ‘species’ microformats. A large bivalve shell found on sandy or gravelly bottoms of lakes and in slow-moving rivers.
International Union for Conservation of Nature. Archived from the original on This page was last edited on 3 Aprilat List of failure reports. Life cycle Adults are long lived and there is nearly always a good proportion of mature shells present in colonies.
The duck mussel Anodonta anatina is a species of freshwater musselan aquatic bivalve mollusk in the family Unionidaethe river mussels. 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 anodobta end.
Although self-fertilization was not anpdonta, additional studies with molecular characterization of larvae using fast evolving markers should be used in future studies to enlighten this process. In other projects Wikimedia Commons. This mussel is associated with relatively unpolluted slow rivers and lakes with sandy or gravelly bottoms, anatinx which are in universal decline.
Views Read Edit View history. 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 native distribution of this species is European-Siberian. Malacologica BohemoslovacaSuppl. Host fishes are among others Perca fluviatilis, Gobio gobio and various local species, in N Germany Salmo trutta, Gasterosteus aculeatus and Leuciscus leuciscus. 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.
Reproductive cycle and strategy of Anodonta anatina (L., 1758): notes on hermaphroditism.
The duck mussel is a large bivalve mollusc which lives in lakes and slow-flowing rivers where the bottom sediments are coarse. How to see this species Duck mussels can anodonnta be seen from fishing stands or jetties on lakeshores where the bottom is of clean sand or silt. However, the present study indicates that A. Check-list of the molluscs Mollusca of the Czech Republic.
Local forms are increasingly threatened by uniform forms introduced with gamefish Falkner 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.
Animals in warm and eutrophic waters live only up to 5 years, in cool and oligothrophic smaller running waters up to 15 years. Decline in water quality in lowland anatinw and rivers from diffuse pollution with attendant. Click on map to open large map in new window. Larvae brooding occurred between September and March and main glochidia discharge occurred over a short period weeks in March. 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.
Freshwater mussels have decreased dramatically in Anwtina over the last decades. Diffuse pollution has affected most areas and dissolved oxygen levels are reduced in anodinta lakes to dangerously low levels in the summer months.
Putting a valve of each species up to strong light separates the two. This is larger at up to mm long but with a less distinctly angular shape and more produced posterior end. Wikimedia Commons has media related to Anodonta anatina.
Threatened both in Ireland and Europe by diffuse pollution and the resultant periodic de-oxygenation of waters. Pictures of Anodonta anatina. It also has a shallower, more flattened shell with the interior less deeply coated with nacre.
Size and age of maturity depends on water temperatures, animals in warm waters reach maturity after 2 years, in cold waters they need aanodonta to 5 years and the shells stay smaller.
AnimalBase :: Anodonta anatina species homepage
anaina From Wikipedia, the free encyclopedia. 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 anodpnta tanks in rural areas. The only other large mussel found in still or nearly still waters is the swan mussel Anodonta cygnea.
Retrieved from ” https: Embryonal shell smoother than in A. Unionidae The duck mussel is a large bivalve mollusc which lives in lakes and slow-flowing rivers where the bottom sediments are coarse.