Abstract
The present work aimed to study some aspect of the reproductive biology of the P. javanicus with emphasis on histopathology abnormalities of gonads and intersex problems. Fish samples of Puntius javanicus (local name: tawes ) were collected from Mas River on the Surabaya downtown whereas highly pollution. Fishes were identified for morphological abnormality and gonad organs were evaluated. Histological preparation was done to observe the gonad condition. This report reveals that 20% male P. javanicus were found to be feminized on July 19, 2012 collection from that river. Some histological samples indicated the presence of testis-ova in fish gonad, which indicated the occurrence of intersex of this species. The above finding suggests that greater attention needs to be given to xenobiotic pollutants and endocrine disrupting chemicals problems.
Highlights
Mas River is a branching rivers and the lower reaches of the Brantas River Basin (Surabaya River) which located in the city of Surabaya and flowing toward the coast north through the center of Surabaya and empties into the Madura Strait
The present work aimed to study some aspect of the reproductive biology of the P. javanicus with emphasis on histopathology abnormalities of gonads and intersex problems
Fishes (P. javanicus) which were caught having gonadosomatic ranges from 0.360656 to 1.048544 (Table 4). These results suggest that the greater the value weight, the greater the value gonad weight (Effendi, 1997)
Summary
Mas River is a branching rivers and the lower reaches of the Brantas River Basin (Surabaya River) which located in the city of Surabaya and flowing toward the coast north through the center of Surabaya and empties into the Madura Strait. Mas River has small current relatively to substrate base muddy and rocky generally. This river is approximately 13 km distance from Wonokromo up to estuary, between 25 m to 35 m of wide with a depth ranging from 1.5 cm to 3.5 m (Bayu, 1997). Mas River’s flow splitting Surabaya city with a variety of human activities, such as industrial activities, settlements, a boat tour, water sport and other extremely dense human activities. Bayu, (1997) recorded that Mas River’s water had 28 C of temperature with 746 NTU of turbidity and pH of 6.6. The water of the river became the main source for the PDAM Surabaya and industries along Surabaya River. Heavy metal content exceeds water quality standards with the highest range for Cd value of 0.007 to 0.039 mg / l, Hg at 0.031-0.056 mg / l and Pb at 0.068 to 0.752 mg / l (Putri et al, 2011)
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