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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In other projects Wikimedia Commons. The native distribution of this species is European-Siberian.
However, the present study indicates that A. The dorsal upper margin is usually nearly parallel to the ventral lower margin giving the shell an oblong shape, rather than being angular.
After a period of some weeks the glochidia metamorphose and drop off to anatna an independent life on the bottom. A more acute or short-term threat ankdonta been delivered by the invasive zebra mussel which competes for dissolved oxygen and food.
Species description A large bivalve shell with a flattened profile and broad, somewhat wedge-shaped appearance.
IUCN Red List of Threatened Species
Under this view a better knowledge on the biological features of these animals is extremely important for future conservation and management actions. 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. Threatened both in Ireland and Europe by diffuse pollution and the resultant periodic de-oxygenation of waters.
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. 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. This is larger at up to mm long but with a less distinctly angular shape and more produced posterior end. It can reach 80 mm in length and has a nearly straight dorsal upper or hinge margin which is usually at an acute angle to the ventral lower margin.
These animals are responsible for important ecosystem services such as recycling nutrients and improving water clarity. Index Animalium Sherborn, species and genera until Eutrophic conditions are better tolerated than by Unio pictorum, but less than by Anodonta cygnea.
Reproductive cycle and strategy of Anodonta anatina (L., 1758): notes on hermaphroditism.
List of all species. Anatinna 1 July 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.
Generally threatened by continuous destructions of habitats, water pollutions and agricultural fertilization. The zebra mussel impacts duck mussels indirectly, by settling on their shells which often provide the only hard substrate in many waterways.
Wikimedia Commons has media related to Anodonta anatina. Pictures of Anodonta anatina. The outlines of shells poking out of the sand can then be seen with the paired pale siphons appearing between the valves. An annotated list of the land and freshwater Mollusca of Northern Ireland.
Shell very variable, usually greenish yellow, brown or snodonta, very solid, often twice as heavy as A. Unionidae The duck mussel is a large bivalve mollusc which lives in lakes and slow-flowing rivers where the bottom sediments are coarse. The duck mussel Anodonta anatina is a species of freshwater musselan aquatic bivalve mollusk in the family Unionidaethe river mussels. Host fishes are among others Perca fluviatilis, Gobio gobio and various local species, in N Germany Salmo trutta, Gasterosteus aculeatus and Leuciscus leuciscus.
Anodonta anatina duck mussel :: Northern Ireland’s Priority Species ::
Nomenclator Zoologicus Neave updated, genera. Gametes were present throughout the reproductive cycle. Conservation of this species Current action Declaration as a Priority Species.