The presence of integrons was assessed in gut bacteria isolated from wild-caught prawns. A pseudomonad was recovered that contained a Tn402-like class 1 integron with a complete transposition module and two gene cassettes. One cassette was identical to a previously described cassette from a chromosomal class 3 integron in Delftia tsuruhatensis.

speckled shrimp (metapenaeus monoceros), is a commercially important prawn in the embayments and estuaries of the mediterranean sea. it is originally a lessepsian species which had migrated from the red sea into the mediterranean sea through the suez canal. this study was carried out in the north-eastern mediterranean sea between november 2009 and october 2010 with monthly sampling of speckled ...

Crustaceans have diversified sexual systems, incorporating various reproductive modalities such as gonochorism and a wide variety of hermaphroditism. In particular, the coral reef- dwelling caridean shrimps, living in symbiosis with other marine invertebrates, developed unusual systems that given origin to range social including highly advanced eusociality. Protandric hermaphroditism, common am...

Effect of different concentrations hypotaurine (HTU) on melanosis and quality shrimps during 10 d storage in ice were studied. During refrigeration, the total plate count volatile basic nitrogen treated with 20 g/L HTU lowest, hardness microstructure best. Moreover, score melanoses, pH bile acid also low. Sensory evaluation showed that treatment could make shelf life 3-4 days longer compared co...

For the first time, a total of 14 Mycoplasma isolates were cultured from 24 moribund prawns investigated during an outbreak of mid-crop mortality syndrome in northern Queensland, Australia. Mycoplasma were isolated from the gill appendages, brains and eyes of the prawns. Mycoplasma growth occurred between 20 and 37°C with or without CO2 in modified Frey's medium containing 0.5 to 3.0% sodium ch...

in this study, ice-glazing process of frozen shrimp by chitosan was applied to protect the frozen shrimp from undesirable chemical and physical changes. the effects of 2% chitosan solution glazing on quality of whole, raw and cooked (without head, tail and shell) shrimps stored at -18±2ºc for 6 months were investigated and compared with water glazing, sodium metabisulfite treatment control. gla...

Southeast Asia is a significant area for world shrimp culture. However, in recent years, the production of cultured shrimp has markedly decreased as a result of serious viral disease outbreaks. Especially, the increased severity of widespread White Spot Syndrome Virus (WSSV) infection is the most serious threat to stable aquacultural production. In the case of Malaysia, outbreak of this disease...

The colour pattern of male guppies (Poecilia reticulata ) is thought to evolve as a compromise between sexual selection (favouring conspicuousness) and natural selection (favouring crypsis). Underpinning this classic explanation is the observation that guppies living with dangerous fish predators are less colourful than guppies living without these predators. However, high fish-predation sites ...