In many species that fight over resources, individuals use specialized structures to gain a
mechanical advantage over their rivals during contests (ie weapons). Although weapons are …

The family Aeglidae comprises three genera, one extant (Aegla) and two extinct genera
(Protaegla and Haumuriaegla), the latter two genera are known only from fossils from …

Animal weapons are generally complex systems composed of more than one structure. A
crab's claw, for instance, is composed of a dactyl (a movable finger) and a propodus (where …

In many species, individuals contest resources using specialized morphologies to
overpower rivals, hereafter referred to as weapons. Despite their importance in fights, little is …

Contesting scarce resources can trigger the evolution of specialized morphological
structures (ie, animal weapons). While most research focus on male weapons, females …

How animals decide to withdraw from a contest has puzzled researchers for years.
Currently, four models try to explain how this decision is made: war of attrition (WOA); …

This study aimed to establish the optimal dietary tryptophan (Trp) level for juvenile mud crab
Scylla paramamosain and evaluate its effects on growth, aggressive behavior, and …

Sexual selection influences the evolution of morphological traits that increase the likelihood
of monopolizing scarce resources. When such traits are used during contests, they are …

This study investigated the use of morphometric aspects of Aegla manuinflata Bond-Buckup
and Santos, 2009 to determine the mean size of males and females at the onset of sexual …

Species with similar niches may exhibit adaptations to diminish competitive pressure and
allow sympatry; freshwater decapods are interesting models for the investigations of these …