BIOLOGY OF GROWTH OF LIZA RAMADA IN LAKE BURULLUS, EGYPT

BIOLOGY OF GROWTH OF LIZA RAMADA

IN LAKE BURULLUS, EGYPT

By

C.F.H. HOSNY* AND HASHEM, M.T.
*Oceanogr. Dept., Fac. of Sci., Alexandria Univ., Egypt.
Key words: Fish biology, Mullets.
ABSTRACT
The present study concerns the growth in length and weight ofLiza
ramada inhabiting Lake Burullus. Six age groups were identifiedfrom
length distribution, having mean lengths of127,231,290,320 and 347
mm of total length. Age groups I and II dominated the population, and
fishes older than 3 years ofage were very scarce. Estimation ofrates of
mortality and exploitation ratio indicate that this species is
underexploited, mostly for these three age groups. Most ofthe mortality
is due to natural causes and is affecting mainly young individuals.