ANALISIS TINGKAT KEMATANGAN GONAD DAN FEKUNDITAS IKAN GELODOK PADA EKOSISTEM MANGROVE KELURAHAN MARGO MULYO KECAMATAN BALIKPAPAN BARAT

Abstract

Mudskipper fish Periothalmodon schlosseri and Pseudapcopryptes elongatus, including subfamily Oxudercinae in the Gobiidae (Gobies) family. Live in muddy tidal areas under the thick of mangrove forests. Mudskipper  fish has the privilege of being able to live in extreme environmental conditions and is able to live in two realms (Amphibia). When on land, these fish can walk on mud using their breast fins as legs. Sampling of Mudskipper fish in the mangrove ecosystem was taken from January to August 2018. Sampling of Mudskipper fish in the mangrove ecosystem was taken using a Palaron pipe catcher and measured environmental parameters in the form of chemical and physical parameters including Temperature, DO and Ph. Analysis using Mudskiiper fish Determination of the level of gonadal maturity and fecundity. the results of the research were 20 fish species of Periopthalmodon schlosseri each consisting of 13 male and 7 male females with the longest male 215-275 mm and the largest body weight 135.1-220.9 grams, for the longest female 222-285 mm and the largest body weight reached 124.3-274.4 grams. while 30 species of elongantus Pseudapcopryptes only found male sex fish with 71-150 mm length and body weight ranging from 2.3-24.3 grams. Species Periopthalmodon schlosseri gonad maturity for female fish is mostly at level IV, whereas for male fish can be found mostly also at levels III and IV. For species of Pseudapcopryptes elongantus the gonad maturity of male fish is mostly at levels I, II, III and IV. Mudskipper species Periopthalmodon schlosseri The value of fecundity obtained ranged from 25.758 – 95.838 individual eggs.