The quantitative trait loci (QTLs) associated with cocoon traits in silkworms were mapped in 44 individuals of a backcross of Dazao females with hybrid F(1) males; the hybrid males were from females of inbred C(1)00 strain, which have white cocoons and superior cocoon traits, crossed with males of inbred strain Dazao, which have green cocoons and inferior cocoon traits. Nineteen putative major ...

The effect of various animal wastes on growth and reproduction of an epigeic earthworm Eisenia foetida was studied under identical laboratory conditions. For each waste, viz., cow, buffalo, horse, donkey, sheep, goat and camel, five hatchlings per 100 g of waste were inoculated and monitored for biomass gain, mortality, sexual maturity, cocoons production periodically for 15 weeks. No mortality...

The cocoons surrounding powerful radio sources can be extensive if the jet that feeds the cocoon is light and supersonic. They have been shown to remain overpressured with respect to the ambient medium for most of the life time of the sources. The observed lobes of the radio sources form parts of these extensive cocoons. We show that observations of the lobes of giant radio sources allow one to...

A building or a bridge might collapse after heat shock. This paper shows that porous hierarchy of coating can effectively prevent from such damage. cocoon’s geometrical structure is studied and its resistance to the shock revealed by thermal oscillator. The theoretical model reveals an extremely low frequency oscillator, which very important for cocoons’ biomechanism, especially in insulation f...

Monodontomerus aeneus (Fonscolombe) is a parasitic wasp that oviposits on the prepupae and pupae of Osmia cornuta (Latreille) and other solitary bee species. A two-armed olfactometer was used to test the olfactory attractiveness of O. cornuta prepupae, cocoon, and larval frass to female M. aeneus. Both cocoon and frass attracted the female parasitoids, but frass alone was more attractive than t...

ABSTRACT The architectural design of animal structures forms part an individual's extended phenotype that can be subjected to strong selection pressures. We examined cocoon dimorphism in robin moths (Hyalophora cecropia), which construct multilayered silk-woven cocoons possess either a ‘baggy’ or ‘compact’ morphology. These dimorphic reflect phenotypes enable survival during critical developmen...