Paramysis
Encyclopedia
Paramysis is a genus of mysid crustacean
s (Mysidacea
) in family Mysidae
, distributed in coastal zone of low boreal East Atlantic Ocean
, Mediterranean Sea
and the basins of Black Sea
, Sea of Azov
and Caspian Sea
(Ponto-Caspian Basin).
, Dnieper and Danube
. A number of Ponto-Caspian species have been introduced outside the native range. Marine species from the Atlantic Ocean and Mediterranean Sea have probably descended from ancient Ponto-Caspian populations.
. Generic characters: subrostral plate; large eyes on short stalk; antennal scale with smooth outer margin, ended by strong spine, and distal segment rudimentary with five setae; four segments of pereiopod 1–4 carpopropodus; five segments in pleopod 4 of male. Consumed by fishes; particularly important for junenile sturgeon
s and zander
.
Two extinct species, previously included into this genus, have been recently moved into extinct genus Sarmysis.
Subgenus Metamysis G. O. Sars, 1893
Subgenus Serrapalpisis Daneliya, 2004
Subgenus Mesomysis Czerniavsky, 1882
Subgenus Nanoparamysis Daneliya, 2004
Subgenus Occiparamysis Daneliya, 2004
Subgenus Longidentia Daneliya, 2004
Subgenus Pseudoparamysis Băcescu, 1940
Incertae sedis
Crustacean
Crustaceans form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles. The 50,000 described species range in size from Stygotantulus stocki at , to the Japanese spider crab with a leg span...
s (Mysidacea
Mysidacea
Mysida is a group of small, shrimp-like crustaceans, an order in the malacostracan superorder Peracarida. Their common name opossum shrimps stems from the presence of a brood pouch, or marsupium, in females. Mysids are mostly found in marine waters throughout the world, but are also important in...
) in family Mysidae
Mysidae
Mysidae is a family of crustaceans in the order Mysida or mysid shrimps. Six sub-families are recognised:* Boreomysinae Holt & W. M. Tattersall, 1905a* Siriellinae Norman, 1892* Rhopalophthalminae Hansen, 1910* Gastrosaccinae Norman, 1892...
, distributed in coastal zone of low boreal East Atlantic Ocean
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...
, Mediterranean Sea
Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean surrounded by the Mediterranean region and almost completely enclosed by land: on the north by Anatolia and Europe, on the south by North Africa, and on the east by the Levant...
and the basins of Black Sea
Black Sea
The Black Sea is bounded by Europe, Anatolia and the Caucasus and is ultimately connected to the Atlantic Ocean via the Mediterranean and the Aegean seas and various straits. The Bosphorus strait connects it to the Sea of Marmara, and the strait of the Dardanelles connects that sea to the Aegean...
, Sea of Azov
Sea of Azov
The Sea of Azov , known in Classical Antiquity as Lake Maeotis, is a sea on the south of Eastern Europe. It is linked by the narrow Strait of Kerch to the Black Sea to the south and is bounded on the north by Ukraine mainland, on the east by Russia, and on the west by the Ukraine's Crimean...
and Caspian Sea
Caspian Sea
The Caspian Sea is the largest enclosed body of water on Earth by area, variously classed as the world's largest lake or a full-fledged sea. The sea has a surface area of and a volume of...
(Ponto-Caspian Basin).
Biogeography
The majority of Paramysis species are brackish- or freshwater endemics of the Ponto-Caspian Basin; some of them naturally spread more than 500 kilometres (310.7 mi) up large rivers, including the Volga, DonDon River (Russia)
The Don River is one of the major rivers of Russia. It rises in the town of Novomoskovsk 60 kilometres southeast from Tula, southeast of Moscow, and flows for a distance of about 1,950 kilometres to the Sea of Azov....
, Dnieper and Danube
Danube
The Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....
. A number of Ponto-Caspian species have been introduced outside the native range. Marine species from the Atlantic Ocean and Mediterranean Sea have probably descended from ancient Ponto-Caspian populations.
Diversity
There are 23 species classified into 8 subgenera. Body length ranges from 1 to 4 cm (0.393700787401575 to 1.6 ). The largest species, like P. eurylepis, P. inflata, are found only in the Caspian SeaCaspian Sea
The Caspian Sea is the largest enclosed body of water on Earth by area, variously classed as the world's largest lake or a full-fledged sea. The sea has a surface area of and a volume of...
. Generic characters: subrostral plate; large eyes on short stalk; antennal scale with smooth outer margin, ended by strong spine, and distal segment rudimentary with five setae; four segments of pereiopod 1–4 carpopropodus; five segments in pleopod 4 of male. Consumed by fishes; particularly important for junenile sturgeon
Sturgeon
Sturgeon is the common name used for some 26 species of fish in the family Acipenseridae, including the genera Acipenser, Huso, Scaphirhynchus and Pseudoscaphirhynchus. The term includes over 20 species commonly referred to as sturgeon and several closely related species that have distinct common...
s and zander
Zander
Zander is a species of fish. The scientific name is Sander lucioperca , and it is closely allied to perch. Zander are often called pike-perch as they resemble the pike with their elongated body and head, and the perch with their spiny dorsal fin. Zander are not, as is commonly believed, a pike and...
.
Two extinct species, previously included into this genus, have been recently moved into extinct genus Sarmysis.
Species
Subgenus Paramysis sensu stricto- Paramysis baeriParamysis baeriParamysis baeri is a species of mysid crustacean from the genus Paramysis, named in honour of the prominent biologist Karl Ernst von Baer. Its body is long, and it is only found in the coastal waters of the Caspian Sea, on sandy and muddy bottoms, at depths of less than...
Czerniavsky, 1882 - Paramysis bakuensisParamysis bakuensisParamysis bakuensis is a species of mysid crustacean from the genus Paramysis, named by the locality from where it was originally described, the town of Baku in Azerbaijan by the Caspian Sea.-Taxonomic history:...
G. O. Sars, 1895 - Paramysis eurylepis G. O. Sars, 1907
- Paramysis kessleri (Grimm in G. O. Sars, 1895)
Subgenus Metamysis G. O. Sars, 1893
- Paramysis grimmi (G. O. Sars, 1895)
- Paramysis inflata (G. O. Sars, 1907)
- Paramysis ullskyi Czerniavsky, 1882
Subgenus Serrapalpisis Daneliya, 2004
- Paramysis incerta G. O. Sars, 1895
- Paramysis kosswigi Băcescu, 1948
- Paramysis lacustris (Czerniavsky, 1882)
- Paramysis sowinskii Daneliya, 2002
Subgenus Mesomysis Czerniavsky, 1882
- Paramysis intermedia (Czerniavsky, 1882)
Subgenus Nanoparamysis Daneliya, 2004
- Paramysis loxolepis (G. O. Sars, 1895)
Subgenus Occiparamysis Daneliya, 2004
- Paramysis agigensis Băcescu, 1940
Subgenus Longidentia Daneliya, 2004
- Paramysis helleri (G. O. Sars, 1877)
- Paramysis kroyeri (Czerniavsky, 1882)
- Paramysis nouveli (Labat, 1953)
Subgenus Pseudoparamysis Băcescu, 1940
- Paramysis bacescoi Labat, 1953
- Paramysis pontica (Băcescu, 1940)
Incertae sedis
Incertae sedis
, is a term used to define a taxonomic group where its broader relationships are unknown or undefined. Uncertainty at specific taxonomic levels is attributed by , , and similar terms.-Examples:*The fossil plant Paradinandra suecica could not be assigned to any...
- Paramysis festae Colosi, 1922
- Paramysis portzicensis Nouvel, 1950
- Paramysis proconnesia Colosi, 1922
- Paramysis arenosa (G. O. Sars, 1877)