Английская Википедия:Discocotyle sagittata

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Версия от 18:35, 27 февраля 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Short description|Species of flatworm}} {{refimprove|date=August 2014}} {{Speciesbox | image = | image_alt = | image_caption = | genus = Discocotyle | species = sagittata | authority = (Leuckart, 1842) | synonyms = * ''Octobothrium sagittata'' <small>Leuckart, 1842</small> }} '''''Discocotyle sagittata''''' is a species of freshwater monogenean gill ectoparasites of ''...»)
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Discocotyle sagittata is a species of freshwater monogenean gill ectoparasites of Salmo and Oncorhynchus. Their lifestyle is characterised by a free-living larval stage that may be inhaled by a suitable freshwater fish host, after which they may attach upon expulsion over the gill onto a single gill filament. Upon reaching maturity, parasites can remain attached by a posterior opisthaptor with its 8 associated clamps (4 in 2 rows). Adults may reach a few millimetres in length. D. sagittata feeds on the blood of the gills via an anterior mouth part. Adults are hermaphrodite, and produce 3–14 eggs per day at 13 °C, a process which is temperature dependent.[1] Once produced, eggs drop to the riverbed surface and at 13 °C take 28 days to develop to hatching larval forms. Major parasite burden can result in damage to the host gill and anaemia from blood loss.

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