Abstract
The impact of insect artificial diet on the egg production of females was examined for L29 consequently generations of laboratory populations Perillus bioculatus (F.) (Hemiptera: Pentatomidae, Asopinae). Particular attention is paid to the overwintered generation, which plays a key role in the rehabilitation of the predator populations after hibernation. It was shown that with an increase in the number of laboratory generations of a predator (from L13 to L29), egg production of P. bioculatus females significantly decreases – from 16.4-35.7 to 15.0-27.5 eggs / female in terms of the total number of females in the laboratory populations. The proportion of eggs laid by females of winter generation was the lowest when feeding on Galleria mellonella larvae. Was established food preferences among the assortment of native for Republic of Moldova leaf beetles: Entomoscelis adonidis Pallas 1771, Chrysolina herbacea (Duftschmid, 1825) and C. coerulans (Scriba, 1791). P. bioculatus imago overwintered generation refused to feed on E. suturalis larvae and imago, probably because of the isoquinoline alkalods contained in the hemolymph of the leaf beetle. Studies have shown that supplementary feeding with imago of E. adonidis, C. herbacea and C. coerulans increases from 8.3±0.5/50 till 11.2±0.7/104 per day / total egg production of P. bioculatus females of the overwintered generation.
Highlights
For modern organic farming using natural entomophagous will always be an excellent attractive idea
In laboratory breeding of stink bugs on an artificial diet, some authors explain the reduction in egg production by females as a protein deficiency, and by the absence of chemical or behavioral signals that would confirm the presence of live prey [8]
As a result of the studies, it was found that Moldovan predator populations of the P. bioculatus in the laboratory conditions can switch to feeding by the other species of insects
Summary
For modern organic farming using natural entomophagous will always be an excellent attractive idea. The main question is devoted to studying the development of all ontogenetic stages of the predator P. bioculatus, as well as the egg production and fertility of females, when fed by the other species of insects or artificial diets. The L. decemlineata, with both other species of insects and artificial nutrient media, inevitably leads to a decrease in the fertility and egg production of P. bioculatus females [11]. In laboratory breeding of stink bugs on an artificial diet, some authors explain the reduction in egg production by females as a protein deficiency, and by the absence of chemical or behavioral signals that would confirm the presence of live prey [8]
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