نتایج جستجو برای: charybdis hellerii
تعداد نتایج: 381 فیلتر نتایج به سال:
Swords are exaggerated male ornaments of swordtail fishes that have been of great interest to evolutionary biologists ever since Darwin described them in the Descent of Man (1871). They are a novel sexually selected trait derived from modified ventral caudal fin rays and are only found in the genus Xiphophorus. Another phylogenetically more widespread and older male trait is the gonopodium, an ...
Growth and Reproduction of the Portunid Crab Charybdis Bimaculata (Decapoda: Brachyura) in Tokyo Bay
Abstract Background The present study was performed to determine carapace length–body weight relationship of Charybdis callianassa. In fisheries biology, length–weight relationships are important as they allow for the calculation, by creating a mathematical equation between two, total fish in particular group fish. Such information is helpful fishery scientists research dynamics development and...
The larvae of crustaceans, including those brachyuran crabs, are a significant part of
 zooplanktonic communities constituting an ecologically important fraction the pelagic
 communities. present study describes taxonomic studies on three megalop stages Portunus
 pelagicus (Linnaeus, 1758), Charybdis feriatus 1758) and Carcinus maenas (Linnaeus,
 belonging to family Portunid...
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