A study to investigate the reproductive biology of Aspidoparia jaya was conducted in Bangladesh where a total 80 fish samples were collected on monthly basis from Atrai River and Jamuna during period January 2022 December 2022. The highest values gonado-somatic index (GSI) recorded July (11.37±1.75%) (9.55±1.35%), whereas individual fecundity 6990±1280 5755±1050 ova diameter 0.55±0.05 0.52±0.03...

The present study was conducted to investigate the reproductive biology of Neotropius atherinoides in Bangladesh Fisheries Research Institute, Floodplain Sub-station, Santahar, Bogura, Bangladesh. A total number 70 fish samples were collected on monthly basis from Atrai River and Jamuna during period September 2021 August 2022. highest mean value gonado-somatic index (GSI) recorded July (12.55±...

The present study aimed to investigate the reproductive biology of Labeobarbus altianalis from River Kuja-Migori basin, Kenya. This fish species is distributed in most water bodies Lake Victoria basin and effluent rivers. susceptible fishing due aggregation at river mouths during reproduction seasons. We conducted a for 18 months with an objective determining length 50% sexual maturity, fecundi...

The spawning season of the milkfish Chanos chanos (Forsskål, 1775) family Chanidae in Central Coast Vietnam was determined. A total 220 specimens (3.20 to 4.50 g body weight, BW) collected from seven provinces (Nghe An, Ha Tinh, Quang Binh, Tri, Binh Dinh, Khanh Hoa, Ninh Thuan) January December 2021. Results showed that Gonado Somatic Index (GSI) ranged 2.03 16.02 females and 1.15 9.87 males h...

Holothuria tubulosa is one of the most common sea cucumber species inhabiting Mediterranean Sea. Due to its commercial interest for international market, it has been harvested without proper management causing overexploitation stocks. Inadequate also caused by lack information on basic biology and ecology not allowing estimating vulnerability resilience growing anthropogenic pressures. In this ...

Abstract In Masbate, senatorial scallop Chlamys senatoria is one of the five commercially important species present in Asid Gulf, but its basic biology poorly understood Philippines. To provide biological information for future conservation and management, reproductive rhythm relation to lunar phase was investigated from October 2016 March 2017. Scallops were collected daily fishers’ catches me...

Effects of dietary inclusion Tribulus terrestris and 17 ?-methyltestosterone on sex reversal, growth performance, feed utilization, survival rates red tilapia were evaluated in this study. Red fry with an average weight 0.02 ±0.003 g length 0.6 ±0.012 cm subjected to six different reversal treatments. The experiment lasted for 112 days. Two T. extract treatments (1and 2 g/kg diet); three hormon...

In order to estimate the fecundity, reproductive character and feeding habit of Liza parsia, 75 gravid females were collected from Pasur River different shrimp farms Khulna district. The equation for total length-body weight standard relationship species found be BW = 9.769 x TL - 101.4 (R² 0.883) 9.921 SL 77.19 0.865) respectively. condition factor ranged 10.12-15.05 having mean value 12.35+1....

Most organisms modulate their reproductive activity responding to day length by the nocturnal release of melatonin by the pineal gland. This hormone is also responsible for synchronizing reproduction with specific external environment stimuli in order to optimize reproductive success.The aim of this study was to establish the effect of melatonin on zebrafish reproduction.Adult females were dail...