Abstract
We examined how CO[sub 2]-mediated changes in tree chemistry affect performance of the gypsy moth (Lymantria dispar) and its suitability as a host for the parasitoid Cotesia melanoscelus. Four species of deciduous trees were grown under ambient or elevated CO[sub 2] conditions, and foliage was fed to gypsy moths in two separate bioassays. In the first, we measured performance (i.e., growth rates) of control and parasitized gypsy moth larvae for the duration of the third stadium. In the second, we assessed parasitoid performance in relation to quality of the host larvae. We found that parasitized gypsy moth larvae on all diets grew more slowly and suffered reduced food processing efficiencies relative to control larvae. The magnitude of growth suppression was greater under elevated CO[sub 2] conditions. Parasitoid performance varied in relation to host plant species but not in relation to CO[sub 2] environment. These results will be interpreted in relation to tree chemistry.
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Claims 5
Claim · model-written summary
Parasitized gypsy moth larvae fed tree foliage on all diets grew more slowly than control larvae.
- Taxon
- gypsy moth
_Female_Dos.jpg?width=60)
Lymantria dispare0 - Treatment
- parasitizede0
- Interactor
- Cotesia melanosceluse1parasite
- Outcome
- grew more slowlye0
- Direction
- more slowlye0
- Comparator
- control larvaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Female_Dos.jpg?width=500)
Verbatim
e0“parasitized gypsy moth larvae on all diets grew more slowly and suffered reduced food processing efficiencies relative to control larvae”
e1“the parasitoid Cotesia melanoscelus”
Claim · model-written summary
Parasitized gypsy moth larvae had reduced food processing efficiencies relative to control larvae.
- Taxon
- gypsy mothLymantria dispare0
- Treatment
- parasitizede0
- Interactor
- Cotesia melanosceluse1parasite
- Outcome
- food processing efficienciese0
- Direction
- reducede0
- Comparator
- control larvaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“parasitized gypsy moth larvae on all diets grew more slowly and suffered reduced food processing efficiencies relative to control larvae”
e1“the parasitoid Cotesia melanoscelus”
Claim · model-written summary
The magnitude of growth suppression of parasitized gypsy moth larvae was greater under elevated CO2 than under ambient CO2.
- Taxon
- gypsy mothLymantria dispare2
- Treatment
- elevated CO[sub 2]e0
- Outcome
- growth suppressione0
- Direction
- greatere0
- Comparator
- ambiente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The magnitude of growth suppression was greater under elevated CO[sub 2] conditions”
e1“grown under ambient or elevated CO[sub 2] conditions”
e2“gypsy moth (Lymantria dispar)”
Claim · model-written summary
Parasitoid (Cotesia melanoscelus) performance varied in relation to host plant species.
Not reportedDirection
Verbatim
e0“Parasitoid performance varied in relation to host plant species”
e1“the parasitoid Cotesia melanoscelus”
Claim · model-written summary
Parasitoid (Cotesia melanoscelus) performance did not vary in relation to CO2 environment (ambient versus elevated).
Verbatim
e0“not in relation to CO[sub 2] environment”
e1“grown under ambient or elevated CO[sub 2] conditions”
e2“the parasitoid Cotesia melanoscelus”
e3“Parasitoid performance varied”