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639.31:597.2/.5:556.51 (1) |
Hunting. Fishing. Fish breeding (81) |
Pisces (Fishes) (scientifically outdated class). Amphibia (149) |
Hydrosphere. Water in general. Hydrology (467) |
![]() FULGA, Nina, BULAT, Dumitru. Reproductive biology of Carassius gibelio (BLOCH 1782) females in the water reservoirs of the Nistru River basin. In: Oltenia - studii si comunicari stiintele naturii, 2010, nr. 1(26), pp. 165-170. ISSN 1454-6914. |
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Oltenia - studii si comunicari stiintele naturii | ||||||
Numărul 1(26) / 2010 / ISSN 1454-6914 | ||||||
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CZU: 639.31:597.2/.5:556.51 | ||||||
Pag. 165-170 | ||||||
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Rezumat | ||||||
The comparative characteristic of reproductive biology of Сarassius gibelio females in water bodies of the Dniester basin is given. It was established that higher indexes of growth rate, relative gonad weight and oocyte dimension in the phase of complete vitellogenesis contribute to the increasing of reproduction rate of Сarassius gibelio population in lower sector of the Dniester. The biological analysis of sexually mature individuals from the lower Dniester and Cuchurgan water cooler basin has revealed the distinctions in mean values of linearly-weight indicators, which are defined by the ecological conditions of existence of Carassius gibelio from different populations. The physiological condition of sexually mature females during prespawning and spawning periods is most satisfactory at individuals from the river. Higher indicators of growth rate and relative gonad weight contribute also to higher rate of reproduction in the population of Carassius gibelio in the lower sector of the Dniester River. |
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Cuvinte-cheie oocyte, reproductive system, vitellogenesis, reproductive biology, relative gonad weigh, oocite, sistem reproductiv, vitelogeneza, biologie reproductivă, greutatea relativă a gonadelor |
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