Induced spawning in bream, Abramis brama (L.), using carp and bream pituitary extract and hCG

1997 ◽  
Vol 28 (2) ◽  
pp. 139-144 ◽  
Author(s):  
D. Kucharczyk ◽  
R. Kujawa ◽  
M. Luczynski ◽  
J. Glogowski ◽  
I. Babiak ◽  
...  
Keyword(s):  
Abramis Brama ◽  
Pituitary Extract ◽  
Induced Spawning ◽  
Bream Abramis Brama

Induced spawning in bream, Abramis brama (L.), using carp and bream pituitary extract and hCG

1997 ◽  
Vol 28 (2) ◽  
pp. 139-144 ◽  
Author(s):  
D Kucharczyk ◽  
R Kujawa ◽  
M Luczynski ◽  
J Glogowski ◽  
I Babiak ◽  
...  
Keyword(s):  
Abramis Brama ◽  
Pituitary Extract ◽  
Induced Spawning ◽  
Bream Abramis Brama

scholarly journals Induced spawning in bream (Abramis brama L.) using pellets containing GnRH

2011 ◽  
Vol 50 (No. 3) ◽  
pp. 89-95 ◽  
Author(s):  
D. Kucharczyk ◽  
R. Kujawa ◽  
A. Mamcarz ◽  
K. Targońska-Dietrich ◽  
E. Wyszomirska ◽  
...  
Keyword(s):  
Control Group ◽  
Gnrh Analogue ◽  
Abramis Brama ◽  
Induced Spawning ◽  
Bream Abramis Brama ◽  
In Captivity ◽  
Common Bream ◽  
Common Bream Abramis Brama

Wild spawners of common bream, Abramis brama, were caught in the Kortowskie Lake (north Poland) and transported to a hatchery for artificial spawning. Fish were hormonally induced using GnRH analogue combined with metoclopramide (ovopel). The results of bream reproduction in captivity were compared with fish treated with the combination of hCG and CPE and with control group injected saline. Males from treated groups produced significantly more milt (over 4.3 ml/kg vs. 2.1) of better qualities: spermatozoon concentration (over 9.3&nbsp;&times; 10<sup>9</sup> vs. 6.8) and motility (over 85% vs. 62). Females from the control group did not spawn whereas those from hormonally induced groups ovulated: 62% after CPE treatment and 100% after GnRHa treatment. Generally, the fish after ovopel stimulation showed the best hatchery parameters. &nbsp;

The Source of Muddy Odor in Bream (Abramis brama) from the Porvoo Sea Area (Gulf of Finland)

1979 ◽  
Vol 36 (8) ◽  
pp. 883-890 ◽  
Author(s):  
Per-Edvin Persson
Keyword(s):  
Abramis Brama ◽  
Blue Green Alga ◽  
Bream Abramis Brama ◽  
High Nutrient ◽  
Off Flavors ◽  
Odor Compounds ◽  
High Concentrations ◽  
High Nutrient Concentration ◽  
Oscillatoria Agardhii ◽  
Sea Area

The study area was a shallow, extremely eutrophic, somewhat brackish water bay on the south coast of Finland. Muddy odor in bream (Abramis brama) was significantly correlated with the amount of the blue-green alga Oscillatoria agardhii occurring in the phytoplankton. Cultures dominated by this alga contained the muddy odor compound geosmin. The high concentrations of O. agardhii in the study area were caused by several interacting factors, of which the high nutrient concentration and the temperature of the water seemed to be especially important. Odoriferous actinomycetes isolated from the water produced the muddy odor compounds geosmin and 2-methylisoborneol, but there seemed to be a lag time of several weeks between maximal concentrations of actinomycetes and development of off-flavors in the fish. Key words: geosmin, 2-methylisoborneol, Oscillatoria agardhii, actinomycetes, flavor, fish, eutrophication

scholarly journals Hybridization behaviour between two common European cyprinid fish species – silver bream, Blicca bjoerkna and common bream, Abramis brama – in a controlled environment

2009 ◽  
Vol 59 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Michaël Ovidio ◽  
Jean-Claude Philippart ◽  
Billy Nzau Matondo ◽  
Pascal Poncin
Keyword(s):  
Fish Species ◽  
Mating Success ◽  
Cyprinid Fish ◽  
Controlled Environment ◽  
Abramis Brama ◽  
Bream Abramis Brama ◽  
Common Bream ◽  
Common Bream Abramis Brama

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.

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