Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 16

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

The growth rate of ruffe, Gymnocephalus cernuus (L., 1758) in the Szczecin Lagoon, the Odra mouth and Lake Dąbie

100%
Neja Z.
Acta Ichthyologica et Piscatoria
|
1989
|
tom 19
|
nr 1
2

On some problems of reproduction of ruff, Gymnocephalus cernuus (L., 1758) in the Lake Dabie

100%
Neja Z.
Acta Ichthyologica et Piscatoria
|
1988
|
tom 18
|
nr 2
3

The stock size and changes in the growth rate of the Northwest Atlantic mackerel [Scomber scombrus L.] in 1971-1983

100%
Neja Z.
Acta Ichthyologica et Piscatoria
|
1995
|
tom 25
|
nr 1
113-121
The influence of the year class size (in numbers) and a stock biomass on the growth rate of 13 cohorts (1971-1983) of the Northwest Atlantic mackerel were investigated. It has been stated that the year class size actually influenced the growth of the examined fish only in the first year of life. The stock biomass was strongly correlated with the growth rate during the first and the second years of life. The density-dependent growth in 3-7 years old mackerel was not observed.
4

Characteristics of age and growth of mackerel (Scomber scombrus L.) from Northwest Atlantic

100%
Neja Z.
Acta Ichthyologica et Piscatoria
|
1990
|
tom 20
|
nr 2
5

Maturation and fecundity of mackerel [Scomber scombrus L.] in Northwest Atlantic

100%
Neja Z.
Acta Ichthyologica et Piscatoria
|
1992
|
tom 22
|
nr 1
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The Miedzyodrze ichthyofauna as caught by various gear

63%
Kompowski A., Neja Z.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
1999
|
tom 03
7

Grow-out of nothern pike [Esox lucius L.] larvae under uncontrolled conditions

63%
Wolska-Neja B., Neja Z.
Acta Ichthyologica et Piscatoria
|
2006
|
tom 36
|
nr 2
105-112
Background. This study aimed to determine survival rate, extent of cannibalism, and growth rate of northern pike (Esox lucius L.) larvae fed live zooplankton during a grow-out period, i.e., the time prior to when fish become valuable as stocking material. An attempt was also made to assess the food conversion ratio (FCR) with respect to the natural food applied. Materials and Methods. Grow-out operations began with 1-day-old pike larvae and involved experimental in-ground tanks with no artificial aeration, forced water flow, artificial circadian lighting, or temperature control. Differently structured habitats (black polyethylene foil, vascular plants, or plastic netting) were placed in all the tanks to separate larvae and provide cover. Feeding live zooplankton to the larvae began on day 3 and food was administered such that larvae were always surrounded by a zooplankton "cloud." Results. The survival rate during the first- (days 1-7) and second (days 8-27) stage of culture was 92.3% and 95.7%, respectively. Highest survival rates were associated with tanks with polyethylene foil habitats, while lowest survival rates were associated with tanks containing plastic netting. No cannibalism was observed in any tank. During the growout period, the total length of larvae increased by an average of 20.88 mm. Although the length increase observed in the three experimental treatments was similar; the significantly highest (P < 0.01) mean length (32.66 mm) was associated with larvae raised in tanks containing polyethylene foil. Until day 13, the mean weight of the larvae did not differ between the three treatments (P = 0.21). At and beyond day 20, fish kept in tanks equipped with polyethylene foil exhibited higher weight increments and on termination of the experiment the mean individual weight of larvae was significantly higher (P < 0.05) than those of larvae in tanks with vascular plants and plastic netting. The food conversion ratio, calculated for the entire culture period was 4.9. Conclusion. High survival rate of the cultured pike larvae demonstrated the success of pike larvae grow-out under uncontrolled conditions.
8

Fecundity of asp Aspius aspius [L., 1758] from Miedzyodrze waters

63%
Kompowski A., Neja Z.
Bulletin of the Sea Fisheries Institute
|
2004
|
nr 3
9

Growth of the young-of-the-year roach, Rutilus rutilus [L., 1758], in Miedzyodrze

63%
Kompowski A., Neja Z.
Acta Scientiarum Polonorum. Piscaria
|
2006
|
tom 05
|
nr 1
10

Some data on the biology of common bream, Abramis brama [L.,1758], from the Miedzyodrze waters

63%
Neja Z., Kompowski A.
Acta Ichthyologica et Piscatoria
|
2001
|
tom 31
|
nr 1
Growth rate (based on fry length measurements and back calculations), condition, relative gonad size, and length at first maturity were determined in the common bream population inhabiting Międzyodrze, a deltaic area situated in the vicinity of Szczecin.
11

Length and age structure, sexual maturation and fecundity of bleak Alburnus alburnus [L., 1758] in Miedzyodrze

63%
Kompowski A., Neja Z.
Folia Universitatis Agriculturae Stetinensis. Piscaria
|
2001
|
tom 28
12

The growth rate and condition of asp Aspius aspius [L., 1758] from Miedzyodrze waters

63%
Kompowski A., Neja Z.
Bulletin of the Sea Fisheries Institute
|
2003
|
nr 3
13

The fecundity of perch from the Miedzyodrze waters

63%
Wandzel T., Neja Z.
Bulletin of the Sea Fisheries Institute
|
1998
|
nr 3
14

Wpływ rozmiaru i koloru przynęt sztucznych na efekty połowów wędkarskich

39%
Biernaczyk M., Stepanowska K., Wrzecionkowski K., Neja Z., Machula S., Kubiak J., Konkol T.
Komunikaty Rybackie
|
2013
|
nr 3
The interrelation between fishing bait color and size and the species and size of fish caught using these baits was investigated in the spring and fall of 2010 from the Skośnica Canal to Dąbie Lake in Międzyodrze. The fishing lures comprised two different colored twisters (motoroil and pearl) of three different sizes (3.5 cm, 6.5 cm, 9 cm). A total of 179 fish of three species - perch, pikeperch, and pike, were caught. The perch and pikeperch showed preferences for bait color, as more fish were caught with the motoriol twisters than with the pearl-colored bait. No such preferences were noted with regard to pike. Additionally, it was determined that bait size had a significant impact on the size of the fish caught.
15

Reproduction of cod, Gadus morhua (Actinopterygii: Gadiformes: Gadidae), from the Gdansk Deep (Baltic Sea) under controlled conditions

39%
Biernaczyk M., Neja Z., Opanowski A., Stepanowska K., Formicki K., Wawrzyniak W.
Acta Ichthyologica et Piscatoria
|
2016
|
tom 46
|
nr 3
16

Wstępne badania nad rozwojem embrionalnym i larwalnym dorsza (Gadus morhua L.) z Głębi Gdańskiej

33%
Wawrzyniak W., Stepanowska K., Formicki K., Chojnacki J. C., Biernaczyk M., Opanowski A., Neja Z., Nowakowski P.
Magazyn Przemysłu Rybnego
|
2009
|
nr 5
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.