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Morphometric Measurements, Gonopod and Gonopores Appearances in Early Sexual Crablet Stage of Scylla paramamosain (Estampador, 1949)

Morphometric Measurements, Gonopod and Gonopores Appearances in Early Sexual Crablet Stage of Scylla paramamosain (Estampador, 1949)

Muhammad Nur Syafaat1,2, Che Zulkifli Che-Ismail3, Adnan Amin-Safwan2, Mohamad N. Azra2, Mohammad Syahnon2, Ambok Bolong Abol-Munafi2 and Mhd Ikhwanuddin2*

1National Research and Innovation Agency (BRIN), Jakarta Pusat, 10340, Indonesia
2Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
3Crustacean Aquaculture Research Division, Fisheries Research Institute, Pulau Sayak, 08500 Kota Kuala Muda, Kedah
 
*      Corresponding author: [email protected]

Fig. 1.

Estimation of male and female based on abdominal flap shape in C5 stages and the six lines on abdominal flap that used to make a ratio for t-test purpose.

Fig. 2.

Verification of sex prediction. (A) Male; (B) Female.

Fig. 3.

Abdominal flap shape and the appearance of gonopores (circle) in different carapace width of female crablet of S. paramamosain.

Fig. 4.

Abdominal flap shape and the appearance of gonopod (arrow) in different carapace width of male crablet of S. paramamosain.

Fig. 5.

The appearance of gonopod inside abdomen flap of crablet with different carapace width of S. paramamosain

Fig. 6.

The appearance of forked pleopod inside abdomen flap of S. paramamosain crablet  with different size of carapace width (CW). 

Table II.

Crablet’s abdominal flap observed from C1 to C7 crablet stages of S. paramamosain.

Pakistan Journal of Zoology

November

Pakistan J. Zool., Vol. 56

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