Speed ​​discrimination shrimp male and female 5 skills

1. In homozygous mature shrimp that reach sexual maturity, males are larger than females.

2. The second step of the male is significantly larger than the female. Males over 3.5 cm in length have a length of 1.5 times the length of their second step. The second step of the female is relatively small and its length does not exceed the length of the body.

3. The distance between the fourth and fifth step of the female's ventral surface is wide, and it is arranged in the shape of "eight". The distance between the bases of males is narrow. The male has a small protrusion on the inside of the foot of the fifth step, which is the opening of the vas deferens.

4. The inner edge of the inner limb of the second abdominal foot of the male has a rod-shaped male appendage, while the female does not.

5. The male reproductive hole is located on the inside of the base of the fifth pair of feet, while the female reproductive hole is located on the inner side of the third pair of foot and the reproductive hole is small and not easy to see with the naked eye.

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