Abortive second meiosis detected in cytochalasin-treated eggs in androgenetic diploid Corbicula fluminea
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چکیده
منابع مشابه
Ctenidial autotomy in Corbicula fluminea in response to massive granulomas.
Large granulomas (greater than 2 millimeters in diameter), stimulated by the presence of and formed around necrotic larval tissue in the inner demibranchs of Corbicula fluminea, are eliminated by autotomy. Granulocytes invade and destroy ctenidial epithelium adjacent to the granuloma, causing it and the granuloma to slough away into the mantle cavity, where they are removed as pseudofeces.
متن کاملEffect of selenium exposure on the freshwater bivalve Corbicula fluminea
Selenium is essential for most of living organisms. In normoxic to moderately hypoxic freshwaters, Se exists predominantly in the (+VI) and (+IV) oxidation states as selenate and selenite respectively, whereas in the biota it is incorporated as Se (-II) or Se (0). At low concentrations, it acts against oxidative damages, but it may be toxic at higher levels. In filter feeders, such as the fresh...
متن کاملGenetic damage in the bivalve mollusk Corbicula fluminea induced by the water-soluble fraction of gasoline.
Although gasoline is an important contaminant of aquatic ecosystems, information concerning the potential effects of this petroleum derivative on the DNA of aquatic biota is lacking. The present study aimed to evaluate the genotoxic and mutagenic effects of acute exposures (6, 24, and 96h) to gasoline water-soluble fraction (GWSF), diluted to 5%, on the Asian clam Corbicula fluminea. The comet ...
متن کاملNew Membrane Formation during Cytokinesis in Normal and Cytochalasin B-treated Eggs of Xenopus Laevis
The electrical membrane potential (E(m)) and electrical membrane resistance (R(m)) were measured continuously during the first cleavage of Xenopus eggs, using intracellular microelectrodes. A sharp hyperpolarization of E(m) and decrease in R(m) can be observed from 6 to 8 min after the onset of cleavage. This moment coincides with the onset of the insertion of new membrane (Bluemink and de Laat...
متن کاملPurification and Characterization of Hemagglutinating Proteins from Poker-Chip Venus (Meretrix lusoria) and Corbicula Clam (Corbicula fluminea)
Hemagglutinating proteins (HAPs) were purified from Poker-chip Venus (Meretrix lusoria) and Corbicula clam (Corbicula fluminea) using gel-filtration chromatography on a Sephacryl S-300 column. The molecular weights of the HAPs obtained from Poker-chip Venus and Corbicula clam were 358 kDa and 380 kDa, respectively. Purified HAP from Poker-chip Venus yielded two subunits with molecular weights o...
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ژورنال
عنوان ژورنال: Development, Growth and Differentiation
سال: 2006
ISSN: 0012-1592,1440-169X
DOI: 10.1111/j.1440-169x.2006.00862.x