Natura Croatica, Vol. 20 No. 1, 2011.
Izvorni znanstveni članak
Periodical appearance of pike (Esox lucius Linnaeus, 1758) in the Danube River in north-western Vojvodina (N Serbia)
Thomas Oliver Mérő
; Milana Rakića 20, 25000 Sombor, Serbia
Sažetak
This study presents the periodical but irregular appearance of pike (Esox lucius L.) in the Danube River and its inundated ponds. During 14 years, 1076 pike were captured at nine sites. The fish appeared in large numbers in years when the average water level was high in spring (R = 0.738, P < 0.01, n = 14). During the study, there were two periods when there were no pike, either in the river or in the inundated ponds. Furthermore, observation showed that prey fish might also affect the presence or absence of pike in late spring in the study area.
Ključne riječi
water level; Spearman correlation; river; inundated ponds; Pike; Esox lucius; »Gornje Podunavlje«
Hrčak ID:
69907
URI
Datum izdavanja:
30.6.2011.
Posjeta: 1.134 *