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Estimation of Peak Spawning Season, Length at Maturity (Lm) and Sex Ratio of Silver Pomfret (Pampus argenteus) in the Bay of Bengal, Bangladesh

Estimation of Peak Spawning Season, Length at Maturity (Lm) and Sex Ratio of Silver Pomfret (Pampus argenteus) in the Bay of Bengal, Bangladesh

Md. Abdullah Al-Mamun1,2, Al-Mamun2,3, Sanjay Kumar Mohanta2,3, Md. Farhan Tazim2,3, Mohammed Rashed Parvej 2,3, Md. Sharif Uddin2,3, Suman Barua1,2 and Liu Qun1*

1College of Fisheries, Ocean University of China, Qingdao 266003, China
2Department of Fisheries, Ministry of Fisheries and Livestock, Dhaka 1217, Bangladesh
3Marine Fisheries Survey Management Unit, Agrabad, Chattogram, Bangladesh
 
*      Corresponding author: qunliu@ouc.edu.cn

Fig. 1.

Histological preparations of oocytes of silver pomfret (A) primary growth; chromatin (Cn) and the perinucleolus stage (Pn) (B) yolk vesicle, LV, lipid vesicles (C) early vitellogenis. VG, Vitellin globules (D) Late vitellogenis. ZR, zona radiata (E) mature stage. FL, follicular layer (F) postovulatory follicle stage (Pof).

Fig. 2.

Histological sections of testes of silver pomfret. Immature (A) Developing (B). GE, germinal epithelium; SZ, Spermatozoa; SSC, secondary spermatocyte and Mature (C-D). ST, spermatids.

Fig. 3.

Monthly variation in GSI (means ± SD) of male and female silver pomfret (A) and temperature (B) in the Bay of Bengal, Bangladesh.

Fig. 4.

Monthly variations in the group maturity rate for silver pomfret in the Bay of Bengal.

Fig. 5.

Relationship between the mature percentage and standard length (SL) for silver pomfret (A) females and (B) males.

Equation 1
Equation 2
Equation 3
Equation 4
Equation 5
Equation 6

Pakistan Journal of Zoology

April

Pakistan J. Zool., Vol. 56, Iss. 2, pp. 503-1000

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