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Robert F. Denno (1945–2008) was an influential insect ecologist. [1] He published more than 130 research papers [2] that helped advance the study of plant–insect interactions, interspecific competition, predator prey interactions and food web dynamics. He studied the ecology of sap-feeding insects, both in natural and cultivated settings. [1]
Insect ecology is the interaction of insects, ... They are also called phytophagous insects. ... (intraspecific) or between species (interspecific). This competition ...
The bacterium does not deter insect herbivory; it actually increases weight gain and leaf consumption in the caterpillar Spodoptera littoralis. [48] However, the parasitic wasp Cotesia marginiventris is attracted more readily to maize plants grown in soil cultures containing either the volatile-producing bacterium or pure 2,3-butanediol.
Other insect species which have been introduced pose a risk for endangering giant wētā species through competition for resources. [ 33 ] Introduced species may compete with the wētā for food and habitats, potentially causing the resources to reach capacity, inhibiting further population growth.
These types of ant-insect interactions involve the ant providing some service in exchange for nutrients in the form of honeydew, a sugary fluid excreted by many phytophagous insects. . [5] Interactions between honeydew-producing insects and ants is often called trophobiosis , a term which merges notions of trophic relationships with symbioses ...
Specifically, Bush reasoned that phytophagous insects that both consume and reproduce on specific host plants provide opportunities for speciation without strict geographical isolation (as in allopatric speciation) because, as the insects adapt to feeding on a new host plant, they are also more likely to mate with other members of their species ...
They are parasitoids of phytophagous insects, primarily flies. The 44 species in 15 genera are almost entirely absent from the New World. The biology of most species of Tetracampidae is little studied. Most of those whose hosts are known are associated with insects that mine in plants.
Chemical communication in insects is social signalling between insects of the same or different species, using chemicals. These chemicals may be volatile, to be detected at a distance by other insects' sense of smell, or non-volatile, to be detected on an insect's cuticle by other insects' sense of taste.