SOME BIOLOGICAL STUDIES ON THE COMMON ECHINODERM ASTROPECTEN POLYACANTHUS OF THE SUEZ CANAL
NESREEN KADRY MORSY;
Abstract
The present work aimed to study the shallow-water echinodem1s present in the Suez Canal lakes. It is concentrated mainly on its biology. The
sea star Astropecten polyacanthus was chosen because of their wide
f
'
distribution and hbundance. The biological criteria, which investigated, were
growth, food and feeding and reproduction.
The area of' study consists of two shallow lakes which are Lake Tirnsah
and the northem:part of the Great Bitter Lake. The bottom of the two lakes is varied between sandy and sandy-mud it is covered by sea grass Halophila
stipulacea in Deversoir but uncovered in in Lake Tinlsah. Temperature in
Lake Timsah fluctuated from 10 °C in winter to29 °C in sunrrner, while in
Great Bitter Lake it fluctuated from 11°C in winter to 31 °C in summer. The
salinity varied fiiom 27 %o to 41 o/oo and from 43 %o to 49 o/oo in Lake Timsah
and Great Bitter take, respectively.
Specimens were collected monthly from the Suez Canal Lakes during the period from INovember 1996 to December 1997.
sea star Astropecten polyacanthus was chosen because of their wide
f
'
distribution and hbundance. The biological criteria, which investigated, were
growth, food and feeding and reproduction.
The area of' study consists of two shallow lakes which are Lake Tirnsah
and the northem:part of the Great Bitter Lake. The bottom of the two lakes is varied between sandy and sandy-mud it is covered by sea grass Halophila
stipulacea in Deversoir but uncovered in in Lake Tinlsah. Temperature in
Lake Timsah fluctuated from 10 °C in winter to29 °C in sunrrner, while in
Great Bitter Lake it fluctuated from 11°C in winter to 31 °C in summer. The
salinity varied fiiom 27 %o to 41 o/oo and from 43 %o to 49 o/oo in Lake Timsah
and Great Bitter take, respectively.
Specimens were collected monthly from the Suez Canal Lakes during the period from INovember 1996 to December 1997.
Other data
| Title | SOME BIOLOGICAL STUDIES ON THE COMMON ECHINODERM ASTROPECTEN POLYACANTHUS OF THE SUEZ CANAL | Other Titles | بعض الدراسات البيولوجية علي النوع السائد من الجلدشوكيات استروبكتين بولى اكانسس القاطن لقناة السويس | Authors | NESREEN KADRY MORSY | Issue Date | 2001 |
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