Interannual variability of fecundity and egg size of an invasive cyprinid, Carassius gibelio
[ X ]
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A population of the invasive Prussian carp (Carassius gibelio) was examined over a three-year period in a mesotrophic reservoir to find out interannual variations of fecundity and egg size and the influence of maternal condition (total length, TL, and age class) and environmental factors (water temperature and fish density) on these variables. Prussian carp reproduction was synchronous, with only a single batch, and fecundity ranged from 1,250 to 62,400 eggs per female. Relative fecundities and egg size showed no significant between-year differences. Fecundity increased with age, whereas egg diameter remained unchanged with age and TL. Fecundity was affected positively by TL and negatively by fish density, whereas temperature had no significant effect. Egg size was not affected by fish density or temperature.
Açıklama
Anahtar Kelimeler
Gasterosteus-Aculeatus-L, Auratus-Gibelio, 3-Spined Stickleback, Floodplain Lake, Salmo-Trutta, Brown-Trout, Carp, Growth, Fish
Kaynak
Journal of Freshwater Ecology
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
22
Sayı
1
