The mRNA expression of growth hormone (GH) gene in early development stages of Siberian sturgeon was investigated using RT-PCR method. Samples were collected from unfertilized eggs up to 50 days post hatched (dph) larvae in 11 different times. Ribosomal protein L6 (RPL6) transcripts were used as the internal standard during quantification of GH mRNA expression. The results showed that the GH mR...

During a series of experiments on the ecology of Nematodirus battus observations were made on the uptake of water by eggs containing third-stage larvae. It was found that, as they approached hatching, the water content of the larvae increased markedly, then fell immediately after they escaped from the shell. The method of measuring the water content, using interferometry, is also described.

the elm leaf beetle xanthogaleruca luteola müller (coleoptera: chrysomelidae), is a serious pest of elm (ulmus spp.) throughout iran. in the present study, lethal and sublethal effects of neem, achook® containing 0.03% azadirachtin, were assessed on mortality, growth, larval weight and feeding deterrence as well as enzymatic and non-enzymatic activities of third instar larvae of the elm leaf be...

Otomyiasis was diagnosed in the right ear of a 3-month-old goose. Twenty-three of 25 larvae were in the meatus acusticus externus, and 2 larvae were under the skin. The larvae were in the third larval stage of Sarcophaga spp. by microscopic examination. A case of otomyiasis was reported in goose for the first time in the world on the basis of morphological characteristics (macroscopic and micro...

Résumé Le Moullac G., A. Van Wormhoudt, AQUACOP. Aquat. Living Resour., 1994, 7 , 203-210. Activity of digestive enzymes (trypsin, chymotrypsin and amylase) was studied in relation with food in Penaeus vannamei larvae first stages. Microparticles containing casein involved the decrease of soluble protein content and enzyme activities. Specific trypsin activity but not chymotrypsin was correlate...

Baculovirus occlusion-derived virions (ODVs) are released from occlusion bodies by the alkaline environment of the insect midgut. The ODV envelope protein P74 is required for oral infectivity. A soluble form of the Autographa californica multiple nucleopolyhedrovirus P74 protein, P74sol, was engineered as part of a chimeric protein with jellyfish green fluorescent protein (GFP). P74sol-GFP was ...

The Su(var)2-5 locus, an essential gene in Drosophila, encodes the heterochromatin-associated protein HP1. Here, we show that the Su(var)2-5 lethal period is late third instar. Maternal HP1 is still detectable in first instar larvae, but disappears by third instar, suggesting that developmentally late lethality is probably the result of depletion of maternal protein. We demonstrate that heteroc...

Pick handle barracuda (Sphyraena jello) ) is one of the most important commercial species in the Persian Gulf. In order to investigate prevalence and intensity of nematoda, 150 S. jello  from three sites (Khuzestan, Bushehr and Hormozgan provinces) of the Iranian coast of the Persian Gulf were monthly investigated in the period 2012-2013. The nematodes belonging to the genus Hysterothylaci...