merged

Effects of water salinity on ovarian maturation stages of crenate
swimming crab, Thalamita crenata (Latreille, 1829) in captivity
Noor Aina Mardhiah bt. Abu Bakar
Supervisor: Prof Dr Mhd. Ikhwanuddin bin Abdullah
Bachelor of Science in Agrotechnology (Aquaculture)
School of Fisheries and Aquaculture Sciences
Crenata swimming crab, Thalamita crenata are considered as potential food resources
for human and also play important role in capture fishery industry. The present study
is to characterized the ovarian maturation stages and determine the effect of water
salinity on ovarian maturation stages of T. crenata in captivity. This present study
consists of three treatments: Treatment 1 (T1) (10 ppt), Treatment 2 (T2) (20 ppt)
and Treatment 3 (T3) (30 ppt). The ovarian maturation stages were determined
through external morphological and histological examination. Only T3 with 30 ppt
managed to produced ovarian maturation Stage 4 and have highest Gonadal Somatic
Index at Day 60 (3.19±0.10%) followed by T2 (2.88±0.54%) and lastly T1
(2.21±0.77%). Mean oocyte diameters for T3 also the highest at Day 60
(136.20±11.85%) followed by T2 (122.01±18.33%) and lastly T1 (111.86±18.51%).
This present study shows that water salinity does affect the ovarian maturation of T.
crenata in captivity.
507 | UMT UNDERGRADUATE RESEARCH DAY 2018