Nanophyes shoreae (Coleoptera, Apionidae) is a pre-dispersal fruit-predator of dipterocarp trees in South east Asian rain forest These trees frequently abort a large part of their fruitcrop soon after anthesis, coincident with N shoreae oviposition Fruit parameters, related to the incidence of weevil attack, were investigated by examination of fruit collected from host trees and through observations made in the canopy Fruit size and the incidence of prior oviposition determined whether beetles initiated attacks However, many fruits were attacked without oviposition occurring and this is discussed with respect to chemical stimuli

The influence of drought on egg development, survival and hatchling weight was studied in the solitary phase of Locusta migratoria migratorioides (Reiche and Fairmaire). There was retarding effect of drought on the rate of egg development. The level of egg survival was lowered during prolonged drought, which also led to a decline in hatchling weight. Also the rate of egg survival was lower in eggpods experiencing longer incubation period.

Laboratory studies were conducted on the role of flood on egg development, survival and hatchling weight in the solitary phase of Locusta migratoria migratorioides (Reiche and Fairmaire). Egg development is retarded by flood, particularly if the eggs develop for a long period in ordinary moist soil prior to flooding. Floods are also detrimental to egg survival; eggs that are flooded immediately after oviposition and those flooded when they are about to hatch are particularly susceptible. Egg age at flooding is a major determining factor of hatchling weight; heavier hatchlings are produced if eggs develop in ordinary moist soil for longer, rather than shorter, period before being flooded. Length of flooding period has no apparent effect on hatchling weight.