نتایج جستجو برای: gonado somatic index
تعداد نتایج: 437816 فیلتر نتایج به سال:
Some reproduction aspects of the "doctor fish", Cyprinion macrostomum, were examined for the first time from the Tigris River drainage. A total of 316 specimens were caught from Gamasiab River in western Iran, at monthly intervals throughout the year from January to December 2013. Age, sex ratio, fecundity, oocytes diameter, gonado‑somatic (GSI), modified gonado‑somatic (MGSI) and Dobriyal (DI)...
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...
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....
Some aspects of reproductive biology Gattan Barbus xanthopterus females were studied from 15-30 March, 2009. These fishes coughed Huweiza Marsh, Southern Iraq and Therthar Reservoir, Western Iraq, used for artificial breeding in Marine Science Center Hatchery. Total lengths ranged between 550-806 mm, total weights 3100-7250 g, their age 3-6 years. It had been found that all examined ovaries rip...
The fecundity and sexual structure of weatherfish (Misgurnus fossilis) population, an inperilled protected freshwater fish with a poorly known life history, was studied in three waterbodies: the River Ner, Południowy canal Nowy Rów (Poland) differing hydrological character. We compared reproductive traits; i.e. sex ratio, absolute relative fecundity, oocyte size, gonado-somatic index body condi...
Fecundity and gonado-somatic index (GSI) of wild freshwater spiny eel Mastacembelus armatus were estimated from haor region of Kishoreganj district of Bangladesh. Estimated fecundity ranged from 2,235 to 19,493 for the fish measuring from 25 to 54 cm and weighing from 79 to 345 g. The minimum, median and maximum ova diameter was 0.20, 1.90 and 2.20 mm, respectively. The average numbers of ova p...
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±...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید