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Table 1 Description of gonadal development stages used in macroscopic analyses of males and females of Grapsus grapus

From: Biology of Grapsus grapsus (Linnaeus, 1758) (Brachyura, Grapsidae) in the Saint Peter and Saint Paul Archipelago, Equatorial Atlantic Ocean

Stage Females Males
Immature Not visible. Hepatopancreas highly developed Not visible. Hepatopancreas highly developed
Developing Small ovaries; light yellow to light orange Vas deferens clearly visible; translucent to whitish
Hepatopancreas developed Hepatopancreas developed
Mature Ovaries larger; orange to red with distinct oocytes. Ovaries occupying most of the available cephalothorax space, at least 1/2 of the size of the hepatopancreas Testes convoluted to enlarged and sinuous, white, at least 1/4 of the size of the hepatopancreas