Male-male competition in Uca arcuata(11.1MB, 00:00:42)Shot Date: 2010/08/09 Shot Location: Osaka, JAPAN | ||
| species Uca arcuata Key Words | ||
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Animalia >Arthropoda >Malacostraca >Decapoda >ocypodidae >Uca >
Two males of Uca arcuata are fighting for a burrow. Their large claws are interlocked tightly, and both of the contestants are trying to throw their opponent. Finally, one male succeeded to bring up the opponent and robbed a burrow. It is not clear why both opponents constantly move the small claw up and down.
(Data No.momo131024ua01b)
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