Seasonal Changes in Energy Reserves of Scopimera globosa (Crustacea: Ocypodidae), with Special Reference to Its Wandering Behavior

概要

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Glycogen and lipid in both the females and males of S. globosa showed maximum levels during the early breeding season (May) , and fell to minimum levels during the late breeding season (late July). Glycogen and lipid levels in the females were reduced greatly during the late breeding season compared to males, because the females divided out a large amount of energy reserves to their eggs. Organic nitrogen in the siltclay fraction (edible fraction of S. globosa) in the substratum from the upper tidal flat where the density of this crab is high, showed the highest levels in early May and the lowest in August. The period in which the silt-clay fraction in the substratum from the upper flat contained the highest levels of organic nitrogen coincides well with the period in which the crabs attained the maximum levels of energy reserves. The females and the small males of the wanderers caught in May had significantly lower glycogen levels than those of the burrow holders. Both sexes of the wanderers caught in October had very low lipid levels as compared to the burrow holders. It is suggested that the wandering behavior of S. globosa is closely associated with lower energy reserves in its body.
社団法人日本動物学会の論文
1983-09-25