Host Selection, Sex Allocation, and Host Feeding by Metaphycus helvolus (Hymenoptera: Encyrtidae) on Saissetia oleae (Homoptera: Coccidae) and Its Effect on Parasitoid Size, Sex, and Quality

1996 ◽  
Vol 25 (2) ◽  
pp. 283-294 ◽  
Author(s):  
L. J. Lampson ◽  
J. G. Morse ◽  
R. F. Luck
Keyword(s):  
Host Selection ◽  
Sex Allocation ◽  
Host Feeding ◽  
Saissetia Oleae

Size-Selective Sex-Allocation and Host Feeding in a Parasitoid--Host Model

10.2307/5608 ◽  
1992 ◽  
Vol 61 (3) ◽  
pp. 533 ◽  
Author(s):  
W. W. Murdoch ◽  
R. M. Nisbet ◽  
R. F. Luck ◽  
H. C. J. Godfray ◽  
W. S. C. Gurney
Keyword(s):  
Sex Allocation ◽  
Host Feeding

scholarly journals The use of salivary α-amylase as an evolutionary solution to host selection in parasitoids

2017 ◽  
Author(s):  
Gladys Bichang’a ◽  
Jean-Luc Da Lage ◽  
Claire-Marie Mailhan ◽  
Frédéric Marion-Poll ◽  
Claire Capdevielle-Dulac ◽  
...  
Keyword(s):  
Host Selection ◽  
Host Recognition ◽  
Host Feeding ◽  
Antennal Sensilla ◽  
Oral Secretions ◽  
Behavioral Observations ◽  
Selection Processes ◽  
Feeding Process ◽  
First Contact ◽  
Gustatory Neurons

AbstractForaging parasitoids use chemical signals in host recognition and selection processes. Thereby, chemicals from the herbivore hosts play a crucial role. When different herbivores are present in the same plant or field, the perception of specific volatiles and contact compounds emitted from the host itself enable the parasitoids both to differentiate between hosts and non-hosts and to estimate the health status of its host. During the host feeding process, contact between the parasitoid and its host is very crucial, and oral secretions from the host play a key role during the first contact for such evaluation by the parasitoid. Using an integration of behavioral observations, biochemical and sensory physiological approaches we demonstrate that female parasitoids of Cotesia flavipes recognize their host and oviposit in reaction to an α-amylase, which is present in the oral secretions of the larvae of their host, Chilo partellus. This activity was also mediated by a purified α-amylase synthetized from Drosophila melanogaster. Using this synthetized enzyme, we further demonstrate that the conformation of the enzyme rather than its catalytic site is responsible for this activity. This enzyme is activating gustatory neurons of the terminal antennal sensilla chaetica of C. flavipes females. α-amylases are therefore good candidates for an evolutionary solution to host selection in parasitoids, thus opening new avenues for investigations in hosts-parasitoids interactions.

Host selection behavior of the host-feeding parasitoid Necremnus tutae on Tuta absoluta

2021 ◽  
Author(s):  
Yibo Zhang ◽  
Xiaocao Tian ◽  
Hao Wang ◽  
Cristina Casteňé ◽  
Judit Arnó ◽  
...  
Keyword(s):  
Host Selection ◽  
Tuta Absoluta ◽  
Host Feeding ◽  
Host Selection Behavior ◽  
Selection Behavior

Koinobint life style of the spider wasp Minagenia (Hymenoptera, Pompilidae) and its consequences for host selection and sex allocation

Zoology ◽  
2020 ◽  
Vol 140 ◽  
pp. 125797 ◽  
Author(s):  
Marco Benamú ◽  
Luis Fernando García ◽  
Carmen Viera ◽  
Mariángeles Lacava ◽  
Stanislav Korenko
Keyword(s):  
Host Selection ◽  
Life Style ◽  
Sex Allocation

Male biased sex allocation with plant size in gynomonoecious Aster ageratoides

2013 ◽  
Vol 20 (3) ◽  
pp. 386-390
Author(s):  
Ge Xingyue ◽  
Zhu Biru ◽  
Liao Wanjin
Keyword(s):  
Sex Allocation ◽  
Plant Size
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