SOME BIOLOGICAL ASPECTS AND DYNAMICS OF THE FIDDLER SHRIMP METAPENAEOPSIS STRIDULANS (ALCOCK, 1905) FROM THE GULF OF SUEZ

SOME BIOLOGICAL ASPECTS AND DYNAMICS OF THE FIDDLER

SHRIMP METAPENAEOPSIS STRIDULANS (ALCOCK, 1905)

FROM THE GULF OF SUEZ

BY

MOHAMED HAMED YASSIEN

Nationallnstitlite ojOceanographyand Fishen’es. Suez Branch P.D.Box 182, Suez. Egypt.
E. mail address: mhvas0:vahoo. co. uk
ABSTRACT
The fiddler shrimp Metapenaeopsis stridulans is caught from the Gulf
of Suez by trawling. The sex ratio of males to females was computed as
1: 1. The length frequency distributions ofthe fiddler shrimp were analyzed
to estimate the population parameters, The estimated growth parameters
were CLa; = 4.82 em. (carapace length) and K’ = 0.6 yJ. LongeVity of the
species in the Gulfis estimated as 1.2 years. The obtained carapace length
at first capture equals to 1.47 em. The calculated total, natural andfishing
mortality rates were Z = 3.68 yJ, M = 1.912 yJ and F = 1.77 yJ
respectively. The corresponding exploitation ratio was estimated as E =
0.48. The results indicated that the present exploitation rate is nearly at
its optimum exploitation.