scholarly journals Study of the Interaction Between Common Carp (Cyprinus carpio) and Silver Crucian Carp (Carassius auratus gibelio Bloch)

2005 ◽  
pp. 9-12
Author(s):  
Péter Bársony ◽  
László Pócsi ◽  
András Szabó
Keyword(s):  
Common Carp ◽  
Growth Rates ◽  
Crucian Carp ◽  
Fish Farming ◽  
Average Weight ◽  
Silver Crucian Carp ◽  
Lower Growth ◽  
Common Carp Cyprinus Carpio ◽  
The Common ◽  
Stocking Rates

Some of the main questions in the fish farming are the good manuring and the success of the feeding. For the best result is very important that only those fishes take place in the fishponds what we want. It seems to be easy but difficult to do. One of the main challenges of the successful fish production in fishponds, is to rid ponds of the silver crucian carp. In the course of the experiment, carp fry were stocked in 5 nursing ponds at the same stocking rate, with different (0-, 50-, 100-, 150-, 200%) stocking rates of silver crucian carp fry, respectively. During the rearing season, weekly test fishings were made to control the growth of the fishes. At the end of the experiment, the yield/hectar and the growth rates were calculated. The experiment proved that the presence of the silver crucian carp in the fishponds causes lower growth rates and productivity in common carp. In the control pond (without silver crucian carp), the average weight of the common carp was 25 g and the yield/hectar was over 900 kg, while in the pond with the most silver crucian carp, the average weight of the common carp was 9 g and the yield/hectar was only 158 kg.

scholarly journals Study of the Interaction Between Common Carp (Cyprinus carpio L.) and Silver Crucian Carp (Carassius auratus gibelio B.)

2004 ◽  
pp. 16-19
Author(s):  
Péter Bársony ◽  
László Pócsi ◽  
András Szabó
Keyword(s):  
Common Carp ◽  
Growth Rates ◽  
Carassius Auratus ◽  
Crucian Carp ◽  
Average Weight ◽  
Silver Crucian Carp ◽  
Common Carp Cyprinus Carpio ◽  
Lower Productivity ◽  
The Common ◽  
Stocking Rates

During the last few years, the spread of the silver crucian carp caused significant problems in pond fish culture. One of the main challenges of the successful fish production in fishponds, is to rid ponds of the silver crucian carp. In the course of the experiment, carp fry were stocked in 5 nursing ponds at the same stocking rate, with different (0-, 50-, 100-, 150-, 200%) stocking rates of silver crucian carp fry, respectively. During the breeding season, weekly test fishings were made to examine the growth of the fishes. At the end of the experiment, the yield/hectar and the growth rates were calculated. The experiment proved that the presence of the silver crucian carp in the fishponds causes lower productivity and growth rates in common carp. In the control pond (with no silver crucian carp), the average weight of the common carp was over 20 g and the yield/hectar was over 700 kg, while in the pond with the most silver crucian carp, the average weight of the common carp was 4.5 g and the yield/hectar was only 123 kg.

scholarly journals The effect of silver crucian carp (Carassius auratus gibelio Bloch) on the yields and the production value of common carp (Cyprius carpio) fingerlings

2006 ◽  
pp. 5-10
Author(s):  
Péter Bársony ◽  
László Pócsi ◽  
András Szabó
Keyword(s):  
Common Carp ◽  
Carassius Auratus ◽  
Crucian Carp ◽  
Stocking Rate ◽  
Silver Crucian Carp ◽  
Production Values ◽  
Production Value ◽  
The Common ◽  
Stocking Rates ◽  
Complex Question

During the last few years, the spread of the silver crucian carp has caused significant problems in pond fish culture. One of the main challenges of successful fish production in fishponds, is to rid ponds of the silver crucian carp. The nature of the damage caused by silver crucian carp is a complex question. To get into the ponds, the crucian carps occupy the territory before the common carp, and competes for food with common carp. The silver crucian carp has a less favorable food coefficient than the common carp, and it’s value is also lower. Therefore, the income of the fish farm decreases. In the course of the experiment, carp fry were stocked in 5 nursing ponds at the same stocking rate, with different (0,- 50-, 100-, 150-, 200%) stocking rates of silver crucian carp fry, respectively. At the end of the experiment, the yield/hectar and the production values were calculated. The experiment proved that the presence of the silver crucian carp in the fishponds causes lower yields and production values.

scholarly journals Evaluation of the Dressing Percentage of 3-year-old Experimental Scaly Crossbreds of the Common Carp (Cyprinus carpio, Linnaeus 1758) in Relation to Sex

2006 ◽  
Vol 75 (1) ◽  
pp. 123-132 ◽  
Author(s):  
H. Buchtová ◽  
Z. Svobodová ◽  
M. Kocour ◽  
J. Velíšek
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Growth Rates ◽  
Pure Line ◽  
Hybrid Line ◽  
Male And Female ◽  
Mirror Carp ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
The Common

The aim of the present study was to compare dressing percentages, with relation to sex, of three bisexual groups of hybrid carp, i.e. Hungarian mirror carp and Northern mirror carp (M2 × M72), the hybrid line of Přerov scaly carp and Northern mirror carp (PS × M72), the hybrid line of P.erov scaly carp and Ropsha scaly carp (PS × ROP), and the pure line of P.erov scaly carp (PS) in harvest size (K3). There were practically no differences in growth variables of male and female carp between the pure line PS carp and M2 × M72 and PS × ROP hybrids. Statistically significant differences in some variables between sexes were found in the scaly hybrid line PS × M72. Females in that group had significantly higher growth rates (TL and SL by 4.08% and 4.52%, respectively; p < 0.05), and their weight variables were also higher (FW, CW and FilletWabs by 11.37%, 13.70% and 14.83%, respectively; p < 0.05 and p < 0.01). The weight of gonads of male carp from all the groups studied was significantly higher (p < 0.01) than that of ovaries of female carp (or, rather, the GSI of male carp was higher).

Acute Toxicity of Synthetic Pyrethroid Cypermethrin on the Common Carp (Cyprinus carpio L.) Embryos and Larvae

2005 ◽  
Vol 13 (5) ◽  
pp. 451-458 ◽  
Author(s):  
Rahmi Aydın ◽  
Kenan Köprücü ◽  
Mustafa Dörücü ◽  
Sibel Şimşek Köprücü ◽  
Murat Pala
Keyword(s):  
Acute Toxicity ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Synthetic Pyrethroid ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
The Common
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