scholarly journals Bt rice does not disrupt the host-searching behavior of the parasitoid Cotesia chilonis

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Qingsong Liu ◽  
Jörg Romeis ◽  
Huilin Yu ◽  
Yongjun Zhang ◽  
Yunhe Li ◽  
...  
Keyword(s):  
Searching Behavior ◽  
Host Searching ◽  
Bt Rice ◽  
Cotesia Chilonis

scholarly journals The attraction of Tremex apicalis (Hymenoptera, Siricidae, Tremecinae) and its parasitoid Ibalia japonica (Hymenoptera, Ibaliidae) to the fungus Cerrena unicolor

2019 ◽  
Vol 68 ◽  
pp. 37-48 ◽  
Author(s):  
Kazumu Kuramitsu ◽  
Teruhito Ishihara ◽  
Aki Sugita ◽  
Thitaree Yooboon ◽  
Barry Lustig ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Dna Barcode ◽  
White Rot Fungi ◽  
White Rot ◽  
Searching Behavior ◽  
Host Searching ◽  
Additional Species ◽  
Saproxylic Insects ◽  
Symbiotic Fungi

Woodwasps (Hymenoptera: Siricidae) are saproxylic insects and a common forest pest. Siricid woodwasps are classified into two subfamilies: Siricinae and Tremecinae. All known symbiotic fungi of Siricinae are in the genusAmylostereumBoidin while some species of Tremecinae have been observed to have a relationship with the fungusCerrenaunicolor(Bull.) Murrill. Previous studies about the host searching behavior of woodwasps and their parasitoids have focused primarily on the subfamily Siricinae.We analyzed the role ofC.unicolorvolatiles on the host searching behavior ofTremexapicalisMatsumura (Hymenoptera: Siricidae: Tremecinae) and its parasitoid Ibalia (Tremibalia) japonica Matsumura (Hymenoptera: Ibaliidae). The results of an olfactory response experiment indicated that the females ofT.apicalisand its parasitoid find their respective hosts using volatiles fromC.unicolor. Using DNA barcode, we identified basidiocarps on the trees infested withT.apicalis.The basidiocarps were all white-rot fungi that cause sapwood decay, includingC.unicolor. Two additional species that we identified belonged to genera closely related toC.unicolor.Woodwasp species are known to carry symbiotic fungi in a pair of specialized sacs called mycangia. Notably we found that mycangia-like structures were absent in the abdomens ofT.apicalisfemales. To the best of our knowledge,Xerisspectrum(Linnaeus) (Hymenoptera: Siricidae) is the only reported example of woodwasp species that do not contain symbiotic fungi in their bodies.Our results suggested that: (1)T.apicalisfemales search for host wood that is already infected with sapwood decaying fungus using volatile compounds; (2)T.apicalis’ female parasitoid also uses volatile compounds from fungus to locate wood that is infested with its potential host.

RESPONSE OF THREE CHELONUS (HYMENOPTERA: BRACONIDAE) SPECIES TO KAIROMONES IN SCALES OF SIX LEPIDOPTERA

1986 ◽  
Vol 118 (4) ◽  
pp. 329-333 ◽  
Author(s):  
A.A. Chiri ◽  
E.F. Legner
Keyword(s):  
Chemical Interaction ◽  
Searching Behavior ◽  
Sensory Adaptation ◽  
Host Searching ◽  
Adaptive Value ◽  
Searching Ability ◽  
Host Parasite ◽  
Larval Parasites

AbstractThree species of egg–larval parasites in the genus Chelonus (Hymenoptera: Braconidae) exhibited host-searching behavior when exposed to body scales from 6 species of Lepidoptera representing 3 families. The nonspecific response to scales from several hosts appears to be of adaptive value to Chelonus spp., as it is consistent with the polyphagous habits reported for this genus. The searching response was more widespread and intense in an Ethiopian Chelonus sp. than in 2 other species. It is thought that the broad responsiveness to host scales may detrimentally affect parasite searching ability through excessive loss of searching time, although sensory adaptation to the kairomones might serve to attenuate such effect. Some coevolutionary aspects of this host–parasite chemical interaction are discussed.

Presence of conspecifics triggers host searching behavior in an egg parasitoid wasp

2015 ◽  
Vol 154 (3) ◽  
pp. 222-227
Author(s):  
Hiroyuki Hirayama ◽  
Takayuki So ◽  
Eiiti Kasuya
Keyword(s):  
Parasitoid Wasp ◽  
Egg Parasitoid ◽  
Searching Behavior ◽  
Host Searching

Prey or host searching behavior that leads to a sigmoid functional response in invertebrate predators and parasitoids

1979 ◽  
Vol 20 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Robert F. Luck ◽  
Joop C. van Lenteren ◽  
Peter H. Twine ◽  
Lodewyk Juenen ◽  
Thomas Unruh
Keyword(s):  
Functional Response ◽  
Searching Behavior ◽  
Host Searching ◽  
Invertebrate Predators ◽  
Sigmoid Functional Response
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