Functional response of the predatory bug Orius sauteri (Hemiptera : Anthocoridae)‎ to chilli thrips Scirtothrips dorsalis (Thysanoptera : Thripidae)‎ infested mango trees in Hainan province, China

Abstract EN

Scirtothrips dorsalis Hood.

(Thysanoptera: Thripidae) is a very important pests in southern China, it can infest vegetable, ornamental plants and fruit crops as well as, transmission various tospoviruses pathogen to host plants.

Also, Oruis sauteri is very widespread predator in China, it can be consumed different preys like, Aphids, thrips and spider mites.

We measured the feeding consumption of O.

sauteri different stages to 2nd larvae and adult female of S.

dorsalis under three constant temperatures and different densities of prey.

As well as, measured the functional response of O.

sauteri different stages to 2nd larvae and adult female of S.

dorsalis.The functional response of theO.

sauteri different stages were fitted to II type of functional response (Holling, 1965).The feeding consumption of different O.

sauteri stages increased with the temperatures and O.

sauteridifferent stages.

However, the female of O.

sauteri consumed more 2nd larvae of S.

dorsalis than 4th and 5th nymph of O.

sauteri.

Also, the females of O.

sauteri consumed more females of S.

dorsalis than 4th and 5th nymph of O.

sauteri.AS well as, the increasing in temperatures lead to increase in attack rate and decreased the handling time as well as, increasing the limit of predation of O.

sauteri different stages.