background: the aim of his study was to determine development time and thermal requirements of three myiasis flies including chrysomya albiceps, lucilia sericata, and sarcophaga sp. methods: rate of development (rod) and accumu­lated degree day ( add) of three important forensic flies in iran, chrysomya albiceps, lucilia sericata, and sarcophaga sp. by rearing individuals under a single constan...

abstract the effect of different larval density of chilo suppressalis walker was evaluated through 2006-2008 on rice infestation in controlled condition of the cages. the results indicated that there were significant effects between dead hearts, white heads and crop yield. the highest dead hearts and white heads were related to the treatment of 32 larvae per m2 and the lowest ones were obtained...

b a ckground: several important diseases are transmitted by mosquitoes. despite of the potential of the occurrence of some mosquito-borne diseases such as west nile, dirofilariasis and malaria in the region, there is no recent study of mosquitoes in west azerbaijan province. the aim of this investigation was to study the fauna, composition and dis- tribution of mosquitoes and the characteristic...

the present study explored the embryonic and larval development of an endangered fish species nandus nandus and resolved larval growth performances with the dietary supplementation of different types of lipids. fertilized eggs were collected from fiber glass tanks immediately after spontaneous spawning of n. nandus, which were fed with a 1% phospholipid (squid meal) supplemented diet for 3 mont...

There is widespread concern regarding the effects of agro-chemical exposure on bee health, of which neonicotinoids, systemic insecticides detected in the pollen and nectar of both crops and wildflowers, have been the most strongly debated. The majority of studies examining the effect of neonicotinoids on bees have focussed on social species, namely honey bees and bumble bees. However, most bee ...

The third larval instar of Goliathus goliatus (Drury, 1770), Goliathus orientalis Moser, 1909 and Goliathus albosignatus Boheman, 1857 are described and illustrated for the first time and compared with the immature stages of other Cetoniinae. Larval development of Goliathus goliatus is investigated under laboratory conditions, with particular emphasis on food requirements. These results support...

The immature stages of the Clouded Apollo (Parnassius mnemosyne) are assumed to be thermophilic due to the possible time limitations and variable weather conditions during their development. Thus, the degree of canopy coverage may affect habitat use by the species. We explored the spatial distribution of larvae and the development time of pupae under variable canopy coverage conditions. Larvae ...

Sea lice, especially Lepeophtheirus salmonis and Caligus spp., have the greatest economic impact of any parasite in salmonid fish farming and are also a threat to wild salmonids. Here, I review how the biology and ecology of various louse and host species influence their pathogenicity and epidemiology. Recent discoveries of new species and genotypes emphasize the need for more basic research on...