Wstępne wyniki badań dotyczących liczebności sandacza, Sander lucioperca (L.) w pierwszym roku po biomanipulacji w płytkim eutroficznym jeziorze

• Autorzy: Rechulicz J. , Plaska W.

Warianty tytułu

EN

Preliminary results of pikeperch, Sander lucioperca (L.), reproductive success one year after biomanipulation in a shallow lake

• Języki publikacji: PL

Abstrakty

EN

The aim of the study was to determine the contribution of pikeperch aged 0 + (Lt <10 cm) to the ichthyofauna structure as an indicator of the reproductive success of this species in Lake Miejskie where biomanipulation was performed. The treatment was carried out in late summer 2006, and comprised stocking the lake with the predatory fish species pike, pikeperch, European catfish, and eel. Gillnet monitoring catches were performed in the lake three times before biomanipulation in 2006, and then three times throughout 2007 after it. Overall, 14 fish species were noted, including four species of predatory fish. After biomanipulation, the share of predatory fish in the ichthyofauna abundance structure increased from 3.2% to 8.9%. Before biomanipulation, pikeperch accounted for more than half of the share of predators, approximately 23% of which was 0 + pikeperch juveniles (TL10 cm). Because of the fourfold increase in the number of 0 + pikeperch individuals one year after biomanipulation, the overall share of pikeperch among predators had increased to over 91%.

Słowa kluczowe

PL

ryby; sandacz; Stizostedion lucioperca; liczebnosc; rozrod zwierzat; rozrod naturalny; sukces rozrodczy; wskazniki reprodukcyjne; wyniki badan; wyniki wstepne; biomanipulacja; jeziora eutroficzne; jeziora plytkie; Jezioro Miejskie; Pojezierze Leczynsko-Wlodawskie

• Wydawca: -
• Czasopismo: Komunikaty Rybackie
• Rocznik: 2013
• Numer: 1
• Opis fizyczny: s.1-5,rys.,tab.,wykr.,bibliogr.

Twórcy

autor

Rechulicz J.

• Pracownia Rybactwa, Katedra Hydrobiologii, Uniwersytet Przyrodniczy w Lublinie, Lublin

autor

Plaska W.

• Pracownia Rybactwa, Katedra Hydrobiologii, Uniwersytet Przyrodniczy w Lublinie, Lublin

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