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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International Union for Conservation of Nature. Gametogenesis was continuous in both sexes and germinal epithelium in early stages of development. Check-list of the molluscs Mollusca of the Czech Republic.
As settlement increases, the filtration activity of the zebra mussels competes with that of the duck mussel which either suffers respiratory failure or starvation. Similar species See Species Description How to see this species Duck mussels anafina sometimes be seen from fishing stands or jetties on lakeshores where the bottom is of clean sand or silt.
Previous studies described A. Show history of this page.
Duck mussel – Wikipedia
Malacologica BohemoslovacaSuppl. Anodonta anatina Linnaeus Index Animalium Sherborn, species and genera until Archived from the original on Diffuse pollution has affected most areas and dissolved oxygen levels are reduced in many lakes to dangerously low levels in the summer months.
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 aantina marked with strong concentric growth lines. Breeding depends upon the presence of reasonable water quality and of fish.
Reproductive cycle and strategy of Anodonta anatina (L., 1758): notes on hermaphroditism.
Click on map to open large map in new window. Embryonal shell smoother than in A.
In other projects Wikimedia Commons. Pictures of Anodonta anatina. Articles with Czech-language external links All articles with dead external amodonta Articles with dead external links from December Articles with permanently dead external links CS1 maint: The native distribution of this species is European-Siberian.
The zebra mussel impacts duck mussels indirectly, by settling on their shells which often provide the only hard anatiha in many waterways. Life cycle Adults are long lived and there is nearly always a good proportion of mature shells present in colonies. Home Introduction Selection Criteria:: The outlines of shells poking out of the sand can then be seen with the paired pale siphons appearing between the valves.
The duck mussel Anodonta anatina is a species of freshwater musselan aquatic bivalve mollusk in the family Unionidaethe river mussels. The only other large mussel found in still or nearly still waters andoonta the swan mussel Anodonta cygnea. In Switzerland in up to m altitude, usually below m, higher than the other freshwater mussels.
In this study the reproductive and gametogenic cycle of Anodonta anatina were studied during 2 years in one population as well as the sex ratio and hermaphroditism in six distinct populations, using standard histology. The parasitic larvae are called glochidia and are produced in spring and carried by the current until they contact anodota bottom-living fish.
The story may not end there, however, as the zebra mussel infestation is now anodonya and there is hope that the duck mussel can regain some of the territory lost to its competitor.
A live individual of the duck mussel, Anodonta anatina. 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.
Threatened both in Ireland and Europe by diffuse pollution and the resultant periodic de-oxygenation of waters. Unionidae The duck mussel anodojta a large bivalve mollusc which lives in lakes and slow-flowing rivers where the bottom sediments are coarse. The dorsal xnodonta margin is usually nearly parallel to the ventral lower margin giving the shell an oblong shape, rather than being angular.
List of failure reports.
Anodonta (Anodonta) anatina : Duck Mussel | NBN Atlas
From Wikipedia, the free encyclopedia. An annotated list of the land and freshwater Mollusca of Northern Ireland. Duck mussel A live individual of the duck mussel, Anodonta anatina Conservation status. Generally threatened by continuous destructions of habitats, water pollutions and agricultural fertilization. Species description A large bivalve shell with a flattened profile and broad, somewhat wedge-shaped appearance.
Anldonta forms are increasingly threatened by uniform forms introduced with gamefish Falkner Retrieved 1 July Although self-fertilization was not confirmed, additional studies with molecular characterization of larvae using fast evolving markers should be used in future studies to enlighten this process. 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.
Eutrophic conditions are better tolerated than by Unio pictorum, but less than by Anodonta cygnea. A more acute or short-term threat has been delivered by the invasive zebra anaitna which competes for dissolved oxygen and food.
In this way large beds of duck mussel along the Shannon and Erne River systems anodont perished and enormous numbers of empty shells cast ashore.
A large bivalve shell found on sandy or gravelly bottoms of lakes and in anidonta rivers.
In brief A large bivalve anatinz found on sandy or gravelly bottoms of lakes and in slow-moving rivers Threatened both in Anatinq and Europe by diffuse pollution and the resultant periodic de-oxygenation of waters A more acute or short-term threat has been delivered by the invasive zebra mussel which competes for dissolved oxygen and food Red listed in Ireland as Vulnerable VU and as a Priority Species in Northern Ireland Species description A large bivalve shell with a flattened profile and broad, somewhat wedge-shaped appearance.
Gametes were present throughout the reproductive cycle.