to compare the performance of fifteen hybrids of silkworm, bombyx mori l. under natural rearing conditions on the farm level and determine their resistance to grasserie disease, an experiment was conducted in a completely randomized design (15 treatments and five replications) for either of non-infected or infected to npv conditions. treatments included hybrids xinhang1?koming1, xinhang1?koming...

Diachasmimorpha longicaudata (Ashmead) has been produced in the laboratory for> 160 generations on the larvae of oriental fruit fly, Bactrocera dorsalis (Hendel), the propagation hosts raised routinely on a semi-synthetic wheat diet formulation. Choice tests using modified stinging units were conducted in the laboratory to investigate whether insectary rearing had altered the host seeking and o...

Bacterial communities are called another "organ" for aquatic animals and their important influence on the health of host has drawn increasing attention. Thus, it is important to study the relationships between aquatic animals and bacterial communities. Here, bacterial communities associated with Litopenaeus vannamei larvae at different healthy statuses (diseased and healthy) and growth stages (...

In the study of arthropods in poultry manure, the key predator of house fly larvae encountered was the beetle Carcinops pumilio Erichson (Coleoptera: Histeridae) (Achiano and Giliomee, 2003, 2005a, b, 2006a, b). It is also considered as a major predator in the suppression of synanthropic flies in poultry houses in the USA (Legner, 1971; Geden and Stoffolano, 1987) and in Britain (Bills 1973, Co...

 This study was conducted in two phases on sturgeon larvae and fingerlings produced from artificial breeding of five pairs of the Persian sturgeon (Acipenser persicus) broodstocks in Shahid Beheshti Hatchery in spring and summer 2006. Initially, 600 larvae were collected on 3 post days hatching (pdh) and 5 days after the onset of exogenous feeding. The second phase was conducted with 450 specim...

 This study was conducted in two phases on sturgeon larvae and fingerlings produced from artificial breeding of five pairs of the Persian sturgeon (Acipenser persicus) broodstocks in Shahid Beheshti Hatchery in spring and summer 2006. Initially, 600 larvae were collected on 3 post days hatching (pdh) and 5 days after the onset of exogenous feeding. The second phase was conducted with 450 specim...

A new species, Dolichothrombium anatoliae sp. nov., is described based on active postlarval forms and larvae. Larvae of Dolichothrombium Feider, 1945 were obtained for the first time by experimental rearing from field-collected females. Azaritrombium Saboori, Bagheri et Haddad Irani-nejad, 2005, hitherto known exclusively from larvae, is regarded as a junior synonym of Dolichothrombium. Diagnos...

Mediterranean flour moth, Ephestia kuehniella, is a cosmopolitan pest of stored products, and its eggs are widely used to rear parasitoids and predators for biological control programmes. This experiment investigated how larval population density affected the survival rate and reproductive output of this species under four rearing densities ( larva per 2 g food per vial; or 00, 500 or 000 larva...

BACKGROUND The hoverfly Microdon (Chymophila) katsurai Maruyama et Hironaga 2004 was speculated to be a myrmecophilous species associated with the ant Polyrhachis lamellidens based on observations of adults near the ant nest. However, there have been no reports regarding the observation of immature stages of this species in association with P. lamellidens. NEW INFORMATION For the first time, ...