Turkish Journal of Fisheries and Aquatic Sciences
2015, Vol 15, Num, 3 (Pages: 533-541)
Growth and Survival Rate of Juvenile Sea Cucumbers (Holothuria tubulosa, Gmelin, 1788) at Various Temperatures
Deniz Günay 1 ,Dilek Emiroğlu 1 ,Tolga Tolon 1 ,Osman Özden ,Hülya Saygi 1
1 University, Fisheries Faculty, Aquaculture Department, İzmir, Turkey
DOI :
10.4194/1303-2712-v15_2_41
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The effect of various water temperatures on growth and survival rate of juvenile sea cucumbers (Holothuria tubulosa)
had been investigated in this research. Average weight of 20.48±2.33 g of juvenile sea cucumberswerecollected from the
coastal zones of Aegean Sea by scuba diving. After the adaptation period, juveniles were placed into glass aquaria which have
4 different sea water temperatures and researched for 45 days under laboratory conditions. Sea water temperatures of trial
groups were selected among the minimum (winter) and maximum (summer) temperatures recorded at the natural habitat of
H.tubulosa juveniles. Thus, 4 temperature group were selected as 15, 20, 25 ve 30 ºC. The sea cucumber juveniles were fed on
dried and powdered brown algae as references in the literature. The best specific growth rate (SGR) was recorded as
0,288±0.02 % day-1 in 25 ºC group. The lowest SGR was recorded as 0.085±0.005 % day-1 in 30 ºC trial group while the
negative specific growth rate (-0.03±0.02 % day-1) was recorded in 15 ºC trial group. The aestivation observed in 30 ºC and
hibernation in 15 ºC group would be a reason for such lower specific growth rates. The survival rate for all groups were 100%
and the best growth performance was recorded in 25 ºC among others (P<0.05).
Keywords :
Sea cucumber, Holothuria tubulosa,aquaculture,temperature, growth