Habitat Condition and Diversity of Macrozoobenthos and Nekton Species in The Laut Mati Tasi Ana Rote Ndao Regency, East Nusa Tenggara

Abstract

              Abstract

Lake Laut MatiTasi Ana is located in Daeurendale Village, Landuleko Sub-District of Rote Ndao Regency East Nusa Tenggara Province. The conditions and characteristics of water habitat of this Lake  greatly affect the diversity of existing biota. Insofar, data and information about the diversity of macrozoobenthos and nekton  in this lake arestill are not  available. This study aims to identify  the diversity of macrozoobenthos and nekton   that exist  in the  lake as well as  their habitat condition parameters. The samples of data  were collected from four predetermined stations of coordinate points (1.Oemasapoka, 2.Olokama, 3.Kaluoen, 4. Lolokaslain) by using cruise method. The study found that    in this lake there exist eight species of  macrozoobenthos which include Parathelphusaconvexa, Melanoidesturricula, M. tuberculata, M. maculata, Neritaundata, Mytilusedulis, Acar squamosa, Cerastodermaglaucum. Most of those macrozoobenthos belong to Gastropod class. In addition, there are four species of nekton namely Oreochormis niloticus, O. mossambicus, Paracheirodon simulans, Channa sp. All of these nektons are found only in station 1 (Oemasapoka). It is conceivable asthe watersalinity of this station is 30 ⁰/₀₀ and the pH level is 9.29. Such condition allows the existence of the nektons.