The Osmoregulatory Ability of the Lampern (lampetra Fluviatilis L.) in Sea Water during the Course of Its Spawning Migration
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منابع مشابه
Osmoregulatory Parameters of Asian sea bass (Lates calcarifer) during adaptation in Freshwater
In the present study, the adaptation of Asian sea bass (lates calcarifer) was investigated in fresh water using physiological parameters of osmoregulation including: the plasma levels of thyroid hormones and cortisol, gill Na+/ K+-ATPase activity and plasma concentrations of sodium and chloride. For this purpose, 60 fish were distributed in three 300 L tanks with a density of 20 fish per tank. ...
متن کاملEffects of water temperature and migration time on some fecundity indices and fertilization rate of female Kutum, Rutilus frisii kutum, migratory to Shiroud River in the southwest Caspian Sea
Kutum, Rutilus frisii kutum, is an commercially important fish in the Caspian Sea. The fish enters the rivers leading to the Caspian Sea for spawning. One of these rivers is Shiroud River. In the artificial propagation process of Kutum, different factors are involved in quality and quantity of female broods eggs and also in the best temperature and migration time for spawning. The influence of ...
متن کاملOsmoregulation of Lampetra fluviatilis L. and Petromyzon marinus (Cyclostomata) in hyperosmotic solutions.
Although osmotic and ionic regulation of Petromyzontia in fresh water has been carefully studied (Wikgren, 1953; Hardisty, 1956; Bull & Morris, 1967; Morris & Bull, 1968; Morris & Bull, 1970), there are still large gaps in our knowledge of the mechanism of' marine' osmoregulation. This is because lampreys are only infrequently caught in the sea, at a time when they parasitize other fish. During...
متن کاملStudy of spawning season and spawning ground of soboor (Tenualosa ilisha, Ham. Bunch., 1822) during its migration in Khuzestan rivers
During 12 months of sampling, from 17 stations, 327 specimens of Soboor fish Tenualosa ilisha, including 120 females, 113 males and 86 immature were caught. Total length (TL) of the fishes was 120-500mm. Maximum diameters of soboor ova 0.795mm and the ova with diameter more than 0.7 mm released at one spawning round. Temporal and spatial distribution of ova diameter corresponding to GSI changes...
متن کاملThe innate immunity changes of the female anadromous hilsa shad, Tenualosa ilisha , during spawning and post spawning season
Tenualosa ilisha (Hamilton) is a valuable migratory fish belonging to the family Clupeidae and it is distributed in a wide area from the Persian Gulf to coasts of Pakistan and China’s southern sea. The aim of the present study was to investigate the changes occurring in innate immunity parameters during upstream migration and comparing them to those during post spawning. Sixty mature female hil...
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