Genetic variation in three species of freshwater crayfish; Astacus astacus L., Astacus leptodactylus Aesch., and Pacifastacus leniusculus (Dana), revealed by isozyme electrophoresis
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منابع مشابه
Freshwater crayfish Astacus leptodactylus (Eschscholtz, 1823) accumulates and depurates copper.
Cu accumulation and depuration in various tissues of the crayfish Astacus leptodactylus was investigated. Adult specimens were exposed to 0.5, 2.5 and 5.0 mg Cu/L under static conditions for three weeks. At the end of the 3rd week the specimens were divided into three groups and left in dechlorinated water for either 1, 2 or 3 weeks for depuration. After 7, 14 and 21 days, four crayfish from ea...
متن کاملOntogeny of osmoregulation in the crayfish Astacus leptodactylus.
Osmoregulation was studied during the postembryonic development of Astacus leptodactylus Eschscholtz 1823 in juvenile stages 1-8 and in adults. Juveniles hatch and later stages develop in freshwater or in moderately saline waters. The time of acclimation from freshwater to a saline medium increased from early juveniles to adults. At all stages, it was longer than in comparable stages of marine ...
متن کاملTissue distribution and correlation profiles of heavy-metal accumulation in the freshwater crayfish Astacus leptodactylus.
The present work details the analysis of heavy-metal and metalloid concentrations in exoskeleton, gill, hepatopancreas, and abdominal muscle tissues of 60 crayfish (Astacus leptodactylus) specimens collected from Lake Hirfanlı, a dam lake located in Kırşehir (Turkey) with a low metal-contamination profile. Concentrations of 11 metals (aluminum [Al], chromium [Cd], manganese [Mn], cobalt [Co], n...
متن کاملAction potential and sodium current in the slowly and rapidly adapting stretch receptor neurons of the crayfish (Astacus astacus).
Action potentials (APs) and sodium current from the slowly and the rapidly adapting stretch receptor neurons in the crayfish (Astacus astacus) were recorded with a two microelectrode voltage- and current-clamp technique. In the rapidly adapting neuron the APs had a duration of 3.2 +/- 0.2 ms (means +/- SE) and an amplitude of 55.2 +/- 1.5 mV. In the slowly adapting receptor neuron APs had a dur...
متن کاملEffect of water temperature on hemocytes and histopathological findings in freshwater Crayfish (Astacus leptodactylus)
In this research, the effect of different water temperature on THC (Total hemocyte count), variety of hemocyte cells and histopathological differences in Crayfish Astacus leptodactylus were studied. This study was&nbs...
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ژورنال
عنوان ژورنال: Hereditas
سال: 2008
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1990.tb00073.x