The effect of diatoms of the genus Cocconeis on the sex reversal of the shrimp Hippolyte inermis Leach was examined in the laboratory. Randomised experiments were carried out to investigate the functional response of shrimps to various diets. The benthic diatom Cocconeis neothumensis was offered, alternatively, during the larval phase and during the postlarval phase, and the results obtained wi...

BACKGROUND Fairy shrimps (Anostraca), tadpole shrimps (Notostraca), clam shrimps (Spinicaudata), algae (primarily filamentous blue-green algae [cyanobacteria]), and suspended organic particulates are dominant food web components of the seasonally inundated pans and playas of the western Mojave Desert in California. We examined the extent to which these branchiopods controlled algal abundance an...

High temperature (32 to 33°C) has been shown to reduce mortality in white spot syndrome virus (WSSV)-infected shrimps, but the mechanism still remains unclear. Here we show that in WSSV-infected shrimps cultured at 32°C, transcriptional levels of representative immediate-early, early, and late genes were initially higher than those at 25°C. However, neither the IE1 nor VP28 protein was detected...

the introduction of l. vannamei to iran was initiated when high mortality occurred in shrimp farms of abadan in  2002 then in bushehr during summer of 2004.. inspection of l. vannamei for infectious agents , specially virus and  bacteria and relationship between them were the main objectives of this study. therefore about 240 samples consisting  of shrimps of l. vannamei were collected from far...

this study investigates the effects of garlic extract on salinity and ph stress resistance of white leg shrimp post larvae (0.1±0.01 g). the experiment was carried out on the basis of completely random model with 5 dietary treatments which include 0 (control treatment), 1cc (treatment 1), 2cc (treatment 2), 4cc (treatment 3) and 8cc (treatment 4) per 100g food in triplicate. 1500 shrimps were r...

Lectins play important role in innate immunity of animals. The affinity of the natural haemagglutinin of the giant freshwater prawn Macrobrachium rosenbergii towards vertebrate erythrocytes and its level with relation to sex, size and moult stages were studied. The strongest agglutinating titres in haemolymph of prawns were marked against guinea pig, chicken, Clarias batrachus, and rabbit eryth...

the survival, growth, reproductive and life span characteristics of phallocryptus spinosa were studied at different temperatures in the laboratory. three replicates of 200 newly hatched nauplii were transferred to culture containers at 15, 20, 25 and 30˚c. the larvae were fed with unicellular algae dunaliella tertiolecta and chemically treated yeast known as lansy pz. survival and growth rate o...

18 Cooked prawn colour is known to be a driver of market price and a visual 19 indicator of product quality for the consumer. Although there is a general 20 understanding that colour variation exists in farmed prawns, there has been no 21 attempt to quantify this variation or identify where this variation is most 22 prevalent. The objectives of this study were threefold: firstly to compare thre...

A new genus and species of procaridid shrimp, Vetericaris chaceorum, and a new atyid species, Halocaridina palahemo, are described from the island of Hawaii. The new genus, regarded as more primitive than Procaris, is characterized by the possession of a larger number of gills than Procaris, including arthrobranchs and pleurobranchs on the third maxilliped and pereiopods 1-4, elongate pleopodal...

backgrounds and objectives: to obtain information about aflatoxigenicity of isolated aspergillus flavus strains from shrimps. material and methods: forty - three isolates of aspergillus flavus from cultured green tiger shrimps of persian gulf were examined for their ability to produce aflatoxins. initially two media; aflatoxin producing ability medium and coconut agar medium were used to detect...