Kondisi Kualitas Air Habitat Glass Eel (Anguilla spp.) di Muara Sungai Cikaso Sukabumi, Jawa Barat

Abstract

Kondisi kualitas air menjadi sangat penting dalam menopang kelimpahan glass eel di muara Sungai Cikaso. Penelitian ini bertujuan untuk menganalisis kualitas air habitat dan kondisi biologis glass eel di muara Sungai Cikaso, Sukabumi, Jawa Barat. Pengambilan sampel dilakukan di muara Sungai Cikaso, Jawa Barat dalam kurun waktu Februari hingga Juni 2021. Penelitian ini menggunakan metode Principal Component Analysis dan Water Quality Index untuk menjelaskan karakteristik habitat glass eel. Glass eel yang tertangkap terdiri atas tiga jenis yakni Anguilla bicolor bicolor, Anguilla nebulosa, dan Anguilla marmorata. Anguilla bicolor bicolor merupakan jenis glass eel yang paling banyak tertangkap. Glass eel memiliki panjang total berkisar 43-73 mm. Glass eel yang ditangkap memiliki pola pertumbuhan alometrik negative dengan nilai faktor kondisi sebesar 0,7624-1,0302. Estimasi populasi glass eel yang diperoleh secara keseluruhan sebanyak 13.348.267 individu dan biomassa 1685,46 kg. Nilai WQI yang didapatkan termasuk kategori sangat baik dengan nilai sebesar 91. Kualitas air habitat muara Sungai Cikaso sangat mendukung kehidupan glass eel berdasarkan nilai Water Quality Index dan kondisi biologis glass eel.

Water quality conditions become very important in sustaining the abundance of glass eels at the Cikaso River estuary. This study aimed to analyze the water quality of habitats and biological conditions of glass eels at the Cikaso River estuary, Sukabumi, West Java. Sampling was conducted at the Cikaso River estuary, West Java in the period February to June 2021. The study used the Principal Component Analysis and Water Quality Index methods to explain the characteristics of glass eel habitats. Glass eels are caught consisting of three species include Anguilla bicolor bicolor, Anguilla nebulosa, and Anguilla marmorata. Anguilla bicolor bicolor is the most common type of glass eel caught. Glass eels have a total length ranging from 43-73 mm. The captured glass eel has a negative alometric growth pattern with a condition factor value of 0.7624-1.0302. The estimated population of glass eels obtained as a whole is 13,348,267 individuals and biomass of 1685.46 kg. The WQI value obtained belongs to the category was very good with a value of 91. Water quality of the Cikaso River estuary habitat strongly supports glass eel life based on water quality index values and biological conditions of glass eels.