Oviposition Preference and Larval Performance of Nematus oligospilus (Hymenoptera: Tenthredinidae) in Relation to Host Plant Vigor

1998 ◽  
Vol 27 (3) ◽  
pp. 615-625 ◽  
Author(s):  
Timothy G. Carr ◽  
Heikki Roininen ◽  
Peter W. Price
Keyword(s):  
Host Plant ◽  
Oviposition Preference ◽  
Larval Performance ◽  
Plant Vigor

scholarly journals Plant Vigor Hypothesis refuted: preference-performance linkage of a gall-inducing weevil on small-sized host plant resources

2011 ◽  
Vol 71 (1) ◽  
pp. 65-69 ◽  
Author(s):  
JC. Santos ◽  
CB. Tavares ◽  
JS. Almeida-Cortez
Keyword(s):  
Host Plant ◽  
Oviposition Preference ◽  
Leaf Size ◽  
Leaf Length ◽  
Larval Performance ◽  
Top Down ◽  
Plant Resources ◽  
Offspring Performance ◽  
Plant Vigor ◽  
Plant Vigor Hypothesis

The Plant Vigor Hypothesis (PVH) predicts an oviposition preference of females and higher offspring performance for insect herbivores on longer and fast-growing plant modules. We tested the PVH predictions by investigating the effects of leaf size of Miconia prasina (Sw.) DC. (Melastomataceae) on the oviposition preference and on the offspring survival of the gall-inducing weevil Prospoliata bicolorata (Coleoptera: Curculionidae). Additionally, we analysed the effects of top-down mortality force on this system. Approximately 83% of the developed galls resulted in adults of P. bicolorata, whereas 17% of the galls successfully induced were killed by natural enemies (top-down effect). Leaves of intermediate size were more abundant while smaller and longer leaves were rare. Nevertheless, the percentage of P. bicolorata galls was higher on the smallest leaves of M. prasina, refuting the preference prediction of the PVH. Our results also refuted the performance prediction: the ratio of survival per leaf was negatively related to the leaf length. Thus, we found a link between female preference and larval performance of P. bicolorata on small-sized leaves of M. prasina. The next goal is to understand the mechanisms involved in the selection of gall-inducing weevil on short leaves of its host plant.

scholarly journals Grape variety affects larval performance and also female reproductive performance of the European grapevine moth Lobesia botrana (Lepidoptera: Tortricidae)

2006 ◽  
Vol 96 (2) ◽  
pp. 205-212 ◽  
Author(s):  
J. Moreau ◽  
B. Benrey ◽  
D. Thiéry
Keyword(s):  
Host Plant ◽  
Adult Emergence ◽  
Lobesia Botrana ◽  
Larval Performance ◽  
European Grapevine Moth ◽  
Wild Grape ◽  
Larval Host ◽  
Fitness Index ◽  
Grapevine Moth

AbstractFor insect herbivores, the quality of the larval host plant is a key determinant of fitness. Therefore, insect populations are supposed to be positively correlated with the nutritional quality of their host plant. This study aimed to determine if and how different varieties of grapes (including the wild grape Lambrusque) affect both larval and adult performance of the polyphagous European grapevine moth Lobesia botrana (Denis & Schiffermüller). Significant differences were found in larval development time, but not in pupal mass, adult emergence rate, or sex ratio. Although the fecundity of females is not different among varieties, females fed on some varieties produced eggs of different sizes which are correlated to their fertility. Thus, females adapt resource allocation to eggs depending on their diet as larvae. Using a fitness index, the average reproductive output was found to be highest for females reared on cv. Chardonnay. Females reared on wild grape produced a fitness index identical to the cultivated grapes. However, Lambrusque and Gewurztraminer separate themselves from the cultivated varieties according to our discriminant analyses. It is emphasized, through this study, that cultivars fed on by larvae should be considered in the population dynamics of L. botrana and that egg number is insufficient to determine host plant quality.

Leaf traits influencing oviposition preference and larval performance ofCameraria ohridellaon native and novel host plants

2014 ◽  
Vol 152 (2) ◽  
pp. 157-164 ◽  
Author(s):  
Lilla D'Costa ◽  
Monique S.J. Simmonds ◽  
Nigel Straw ◽  
Bastien Castagneyrol ◽  
Julia Koricheva
Keyword(s):  
Host Plants ◽  
Oviposition Preference ◽  
Leaf Traits ◽  
Larval Performance ◽  
Novel Host
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