The Study of Sea Cucumber (Phyllophorus sp.) Gonads Histology: Thermal Shock to the Spawning Process

Abstract

Sea cucumbers Phylloporus sp. obtained from the east coastal waters of Surabaya. This sea cucumber has potential to develop as a source of the active ingredient. Exploitation of sea cucumbers is very high today. Local sea cucumber hatchery activities Phyloporus sp. is important so that the availability of sea cucumbers need not depend on the nature and this program also has benefit to increasing quality of the resulting sea cucumbers.

This study aims to determine the effect of heat shock on the seeding process by looking at the histology preparation. By knowing the profile of the resulting influence gonad development it is expected to be applied in the local sea cucumber hatchery activities. The results have shown that the temperature shock treatment did not affect the increase in mass of the gonads and gonad maturity level. However, the provision of heat shock capable of inducing spawning of sea cucumber with a marked presence of sperm and egg is released. The resulting larvae have survival is still very low, this is possible because of the quality of eggs and sperm are also forced spawning by temperature shock do.

Keywords: Phyllophorus sp., gonad, thermal shock, spawning