merged

Reproductive biology and embryonic development of crenate swimmning
crab, Thalamita crenata
Muhammad Adam bin Ahmad Kamarudin
Prof Dr Mhd Ikhwanuddin Bin Abdullah
Bachelor of Agrotechnology Science (Aquaculture)
School of Fisheries and Aquaculture
The aim of this study was to determine the general reproductive biology and document
the early embryonic development of crenate swimming crab, Thalamita crenata.
Observations were made on fertilization of the eggs of this crab after mating. The
mean number of fertilization rate by female in different size ranged is 94.58±2.66.
Mean number of hatching rate by female in different size ranged is 92.58±3.52. The
mean number of egg produced female in different size ranged is 34445.57. The period
taken by the eggs to hatch was 12 days and the colour of the eggs gradually changed
from yellow to brown, gray and dark gray. The mean diameter of the egg on the first
day was 307.52±3.53 µm and it increased to 389.44±7.96 µm on the day before
hatching.
498 | UMT UNDERGRADUATE RESEARCH DAY 2018