scholarly journals DNA Fingnerprinting of Eight Cyprinid Fish Species of Iraqi Inland Waters Using RAPD-PCR Technique

2012 ◽  
Vol 2 (2) ◽  
pp. 9-16
Author(s):  
Mustafa Sami Faddagh ◽  
Najah A. Hussain ◽  
Adnan Issa Al-Badran
2009 ◽  
Vol 59 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Michaël Ovidio ◽  
Jean-Claude Philippart ◽  
Billy Nzau Matondo ◽  
Pascal Poncin

AbstractThe egg release–mating comparison, heterospecific matings and mating success under two hybridization conditions – (i) mixing one sex per species and (ii) mixing both sexes from each species – were investigated to determine whether silver bream Blicca bjoerkna and common bream Abramis brama can hybridize in nature.The results revealed that non-matings in hybridization experiments of silver bream females × common bream males can be explained by territorial and aggressiveness activities observed in common bream. In common bream females × silver bream males, heterospecific matings were observed but their numbers were significantly lower than the spawning numbers, and in this experiment, a female mated with one to four heterospecific males. In mixing both sexes from both species, similar spawning – mating numbers were observed but heterospecific matings accounted for only 27% of the total matings, with 24% accounting for heterospecific matings between common bream females and silver bream males, directly or by opportunism. Mating success was characterized by the occurrence of fertilized eggs after matings.Natural hybridization occurred preferentially between common bream females and silver bream males.


Author(s):  
Andrey Dmitrievich Bykov ◽  
Svetlana Yuryevna Brazhnik

The article considers the issue of assessing the long-term results of work on fisheries reclamation in inland waters of fisheries significance in Russia, carried out by the branches of the Federal State Budgetary Institution “Glavrybvod” on the state task in terms of their effectiveness. The relationship between dredging and clearing of watercourse beds and the dynamics of the number of producers of semi-navigable and non-aquatic fish in these rivers during spawning migrations has not been established. With long-term mowing of wetland vegetation in the shallow waters of reservoirs, deltas of large rivers and estuaries, there is no increase in their commercial fish productivity. A number of examples show the opposite effect of this type of work, which leads to a local deterioration of the ecological state of these reservoirs. At the same time, the repeatedly proven method of combating higher aquatic vegetation in the reservoirs of the south of Russia in low water conditions as biomelioration, based on the introduction of fish, consumers of autotrophic products by regional branches of the Federal State Budgetary Institution “Glavrybvod” is practically not used. When installing artificial spawning grounds in the littoral zone of reservoirs, regular ichthyological monitoring of the effectiveness of spawning on them is not carried out. There are no reliable data confirming the significant positive impact of artificial spawning grounds on the population dynamics of commercial fish species of the limnophilic ecological group under conditions of significant spring water level depletion in Russian reservoirs. When catching predatory and low-value fish species in water bodies, legal obstacles arise due to the fact that the volume of seizure of predatory fish includes commercial objects for which the ODE is established annually and their catch is already carried out according to industrial quotas.


2003 ◽  
Vol 3 (3) ◽  
pp. 320-328 ◽  
Author(s):  
Ibrahim Orun ◽  
Mustafa Dorucu . ◽  
Hasan Yazlak .

2020 ◽  
Vol 36 (2) ◽  
pp. 261-264 ◽  
Author(s):  
Md. Abu Hanif ◽  
Muhammad A. B. Siddik ◽  
Mir Mohammad Ali
Keyword(s):  

2016 ◽  
Vol 32 (4) ◽  
pp. 755-756 ◽  
Author(s):  
H. Y. Cao ◽  
Z. Yang ◽  
L. Cai ◽  
L. Pan

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