Genetic diversity and population differentiation of the blue swimming crab, Portunus pelagicus, in Thailand were analyzed by RAPD analysis. One hundred and twelve RAPD fragments were generated from 109 individuals of P. pelagicus using OPA02, OPA14, OPB10, UBC122, and UBC158 primers. The percentage of polymorphic bands in each geographic sample and that of each primer across overall samples wer...

Understanding how aquatic species grow is fundamental in fisheries because stock assessment often relies on growth dependent statistical models. Length-frequency-based methods become important when more applicable data for growth model estimation are either not available or very expensive. In this article, we develop a new framework for growth estimation from length-frequency data using a gener...

Weight specific oxygen consumption and heart rates were investigated in blue swimming crab, Portunus pelagicus to indicate the stress in response to increasing salinities (50, 75, 100 and 125%SW) and increasing copper concentration (0, 0.75, 1.5, 3 and 6 ppm copper) at temperature 25 degrees C. Oxygen consumption (micromol.g(-1).h(-1) was measured using closed system respirometer (Strathkelvin ...

Persian Gulf supports diverse ecosystems and biota in need of remediation and protection and metal data from this region is needed. The levels of mercury in tissues of blue swimming crab, Portunus pelagicus and sediments from the Persian Gulf coasts, south Iran were investigated. Mercury analysis was performed by Atomic Absorption Spectrophotometer. The distribution pattern of mercury in the ti...

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...

Crab's shells of Portunus pelagicus species were used as raw materials for synthesis of hydroxyapatite were used for protection against demineralization of teeth. Calcination was conducted to crab's shells of Portunus pelagicus at temperature of 1000°C for 5 hours. The results of calcination was reacted with (NH4)2HPO4, then dried at 110°C for 5 hours. Sintering was conducted to results of prec...

Margin dan pangsa pasar rajungan memiliki peran penting secara ekonomi, sosial, kelembagaan bagi kehidupan para pelaku usahanya baik nelayan maupun pengolah rajungan. Penelitian ini bertujuan untuk menganalisis margin harga pemasaran pada setiap lembaga yang terlibat. Pengumpulan data dilakukan dengan cara wawancara menggunakan kuesioner, studi literatur, dari berbagai instansi pemerintah swast...