Abstract
Sea cucumbers face heavily overfished because of their high prices and very strong market demand. One effort suggested to overcome this problem is sea ranching. The objectives of present works were to determine biological, physical, and chemical characteristics of prospective location for sea ranching of sea cucumber Holothuria atra. Two location at Jepara Waters (Teluk Awur and Bandengan WateRs of Jepara Regency) were selected. The determination of chemical (salinity, temperature, dissolved oxygen of water, phosphate, nitrate, nitrite and ammonium of water and sediment, organic matters of sediment), physical (transparancy, sedimen grains size, water current direction and its velocity), biologycal characteristic (coverage of seagrass and its macroalgae associated, phytoplankton as well as chlorophyl-a and phaeopytin of water and sediment) ware determined. The result of present work showed that some characteristic were matched with requirement as sea ranching location of sea cucumber because the density of sea cucumber in the sea is a function of habitat features. For sediment feeding holothurians of the family Aspidochirotida, the biologycal characteristic act as very important considerations by providing sea cucumber food. High cholophyl-a and phaeopytin in sediment also represent a prosperous habitat for sea cucumber ranching.
Highlights
Sea cucumbers, known as ‘beche-de-mer’ or ‘trepang’, are generally consumed in Asia, where it is regarded as traditional medicine, a delicacy and an aphrodisiac
Teluk Awur (06°37.437'S, 110° 38.317'E-06°37.142'S, 110° 38.290'E) and Bandengan Waters (06°33.905'S, 110° 39.315'E-06°33.762'S, 110°39.142'E-) of Jepara Regency were surveyed on dry season (June 2016) to assess their suitability as sea raching location of sea cucumber H. atra
Teluk Awur and Bandengan waters were chosen as proposed sea ranching of H. atra since they may have such characteristics
Summary
Known as ‘beche-de-mer’ or ‘trepang’, are generally consumed in Asia, where it is regarded as traditional medicine, a delicacy and an aphrodisiac. Sea cucumbers being defenceless animals offer no resistance at the time of capture and are indiscriminately fished out. They do not make any attempts to move away like fish or prawns. This has resulted in large scale capture of sea cucumbers including small and immature forms. In Indonesia, the sign of depleted stock was very prompted. It showed by decreased production, reduced size of individual catch, farther and deeper fishing area, and more new species introduced in the market [4][5][6]
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