Английская Википедия:Epioblasma

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Версия от 02:36, 4 марта 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Short description|Genus of bivalves}} {{Automatic taxobox | image = Epioblasma brevidens.jpg | image_caption = ''Epioblasma brevidens'' | taxon = Epioblasma | authority = Rafinesque, 1831 | synonyms = ''Dysnomia'' <small>Agassiz, 1852</small> }} '''''Epioblasma''''' is a North American genus of freshwater mussels, aquatic bivalve mollusks i...»)
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Шаблон:Short description Шаблон:Automatic taxobox

Epioblasma is a North American genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels. Most of the species in this genus have been lost in modern times, and the entire genus is threatened with the possibility of extinction.

Reproduction

All Unionidae are known to use the gills, fins, or skin of a host fish for nutrients during the larval glochidia stage. It was discovered in 2004 that female Epioblasma in the subgenus Torulosa transfer their parasitic larvae to the host fish by snapping onto the head of the fish and pumping the larvae into the host fish's gills. While using bait to lure host fish towards the larvae is common in the family Unionidae, this was the first time that "fish snapping" behavior had been observed. Examination of other species within the genus Epioblasma may further reveal unusual reproductive mechanisms.[1]

Taxonomy of the genus Epioblasma

Note: Taxa with a "†" symbol are extinct due to human activity

Conservation status

Файл:Golden riffleshell mussels ready for release.jpg
In September, 2017, a total of 700 golden riffleshell mussels, a federally-endangered species, were released into the Clinch River and Indian Creek. The release comes nearly twenty years after a chemical spill from an overturned tanker truck eliminated the mussel from the Clinch River; and after years of work to rear the animal in captivity by the states of Virginia and Kentucky as well as the U.S. Fish and Wildlife Service and Virginia Tech.

This entire genus is imperiled. In this genus, 15 species or subspecies are believed to be extinct. Of those remaining, all are federally protected species in the United States. The last to be listed as a federally endangered species was Epioblasma triquetra, which was listed in 2012.

This group of freshwater mussels is threatened primarily by habitat alteration as are other freshwater mussels. Dams, erosion, and pollution appear to be the primarily threats. Some workers recognize additional species not currently on the official list of recognized species.

Gallery

References

Шаблон:Reflist

Шаблон:Taxonbar Шаблон:Authority control

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  1. ↑ Шаблон:Cite web
  2. ↑ 2,0 2,1 2,2 Шаблон:Cite web
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:Epioblasma&oldid=14555268