Males often possess traits, such as horns, claws and tusks, which are used during male-male combat. Studies suggest that selection has fine-tuned these weapons to improve their effectiveness and that the shape of these weapons provide cues for males to assess the strength of rivals. Similarly, females might also assess a male’s weaponry to determine his value as a mate. The largest weapon relat...

Fiddler crab has a unique character, there is sexual dimorphism in the size of its claws. This type lives tidal areas, around mangrove forests and sandy beaches. Mangrove forest ecosystem with lots flora fauna. The purpose this study was to examine diversity types Viola Crab (Uca spp) Forest Ecosystem Parit Setia Village, Jawai District, Sambas Regency. research conducted using survey method pu...

Habituation is an active process that allows animals to learn to identify repeated, harmless events, and so could help individuals deal with the trade-off between reducing the risk of predation and minimizing escape costs. Safe habituation requires an accurate distinction between dangerous and harmless events, but in natural environments such an assessment is challenging because sensory informa...