TY - JOUR
T1 - Extrinsic Inter- and Intraspecific Competition in Parasitoid Wasps
AU - Ode, Paul J.
AU - Vyas, Dhaval K.
AU - Harvey, J.A.
PY - 2022
Y1 - 2022
N2 - The diverse ecology of parasitoids is shaped by extrinsic competition, i.e., exploitative or interference competition among adult females and males for hosts and mates. Adult females use an array of morphological, chemical, and behavioral mechanisms to engage in competition that may be either intra- or interspecific. Weaker competitors are often excluded or, if they persist, use alternate host habitats, host developmental stages, or host species. Competition among adult males for mates is almost exclusively intraspecific and involves visual displays, chemical signals, and even physical combat. Extrinsic competition influences community structure through its role in competitive displacement and apparent competition. Finally, anthropogenic changes such as habitat loss and fragmentation, invasive species, pollutants, and climate change result in phenological mismatches and range expansions within host-parasitoid communities with consequent changes to the strength of competitive interactions. Such changes have important ramifications not only for the success of managed agroecosystems, but also for natural ecosystem functioning.
AB - The diverse ecology of parasitoids is shaped by extrinsic competition, i.e., exploitative or interference competition among adult females and males for hosts and mates. Adult females use an array of morphological, chemical, and behavioral mechanisms to engage in competition that may be either intra- or interspecific. Weaker competitors are often excluded or, if they persist, use alternate host habitats, host developmental stages, or host species. Competition among adult males for mates is almost exclusively intraspecific and involves visual displays, chemical signals, and even physical combat. Extrinsic competition influences community structure through its role in competitive displacement and apparent competition. Finally, anthropogenic changes such as habitat loss and fragmentation, invasive species, pollutants, and climate change result in phenological mismatches and range expansions within host-parasitoid communities with consequent changes to the strength of competitive interactions. Such changes have important ramifications not only for the success of managed agroecosystems, but also for natural ecosystem functioning.
KW - anthropogenic change
KW - apparent competition
KW - competitive displacement
KW - exploitative competition
KW - fighting
KW - interference competition
KW - resource guarding
U2 - 10.1146/annurev-ento-071421-073524
DO - 10.1146/annurev-ento-071421-073524
M3 - Article
SN - 0066-4170
VL - 67
SP - 305
EP - 328
JO - Annual Review of Entomology
JF - Annual Review of Entomology
ER -