Abstract
Abstract Most studies on the effects of elevated atmospheric CO 2 on organisms have focused on the performance of plants or herbivores. Few reports have examined the impact on the ability of predators at the third trophic level. In this experiment, we made use of open‐top chambers to quantify the effects of elevated CO 2 on growth, development, and predatory ability of two successive generations of Chinese lacewing, Chrysopa sinica (Tjeder) (Neuroptera: Chrysopidae), feeding on cotton aphids, Aphis gossypii (Glover) (Hemiptera: Aphididae), which were reared on cotton, Gossypium hirsutum L. (Malvaceae), grown under elevated CO 2 (double ambient vs. ambient). Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span. The predatory ability of larvae in the third instar and the total larval stage of C. sinica that fed on A. gossypii were significantly lower in elevated CO 2 environments. The number of aphids consumed by first‐generation lacewing population did not change significantly with different CO 2 treatments; however, significantly fewer aphids were consumed by the second generation of the lacewing population with elevated CO 2 . We speculate that A. gossypii may become a more serious pest under an environment with elevated CO 2 concentrations because of the reduced predatory ability of C. sinica on A. gossypii .
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Claims 12
Claim · model-written summary
Elevated CO2 reduced duration of larval development.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- Higher atmospheric CO 2 concentrationse0
- Outcome
- duration of larval developmente0
- Direction
- reducede0
Not reportedInteractorInteractor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
Elevated CO2 reduced survival rate of pupae.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Higher atmospheric CO 2 concentrationse0
- Outcome
- survival rate of pupaee0
- Direction
- reducede0
Not reportedInteractorInteractor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
Elevated CO2 decreased weight in adult female C. sinica.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Higher atmospheric CO 2 concentrationse0
- Interactor
- C. sinicae0other
- Outcome
- weight in adult female C. sinicae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
Elevated CO2 no significant effects survival rate of each larval stage.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Higher atmospheric CO 2 concentrationse0
- Outcome
- survival rate of each larval stagee0
- Direction
- no significant effectse0
Not reportedInteractorInteractor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
Elevated CO2 no significant effects female adult fecundity.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Higher atmospheric CO 2 concentrationse0
- Outcome
- female adult fecunditye0
- Direction
- no significant effectse0
Not reportedInteractorInteractor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
Elevated CO2 no significant effects egg hatch rate.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Higher atmospheric CO 2 concentrationse0
- Outcome
- egg hatch ratee0
- Direction
- no significant effectse0
Not reportedInteractorInteractor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
Elevated CO2 no significant effects adult life span.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Higher atmospheric CO 2 concentrationse0
- Outcome
- adult life spane0
- Direction
- no significant effectse0
Not reportedInteractorInteractor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher atmospheric CO 2 concentrations reduced the duration of larval development and the survival rate of pupae, and caused decreased weight in adult female C. sinica , but had no significant effects on survival rate of each larval stage, female adult fecundity, egg hatch rate, or adult life span.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
C. sinica predatory ability during the third instar was lower under elevated CO2.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- third instare0
- Treatment
- elevated CO 2 environmentse0
- Interactor
- A. gossypii
Aphis gossypiie0pest - Second interactor
- C. sinicae0other
- Outcome
- predatory abilitye0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The predatory ability of larvae in the third instar and the total larval stage of C. sinica that fed on A. gossypii were significantly lower in elevated CO 2 environments.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
C. sinica predatory ability during the total larval stage was lower under elevated CO2.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- total larval stagee0
- Treatment
- elevated CO 2 environmentse0
- Interactor
- A. gossypiiAphis gossypiie0pest
- Second interactor
- C. sinicae0other
- Outcome
- predatory abilitye0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The predatory ability of larvae in the third instar and the total larval stage of C. sinica that fed on A. gossypii were significantly lower in elevated CO 2 environments.”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
First generation lacewings consumed similar numbers of aphids across CO2 treatments.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- different CO 2 treatmentse0
- Outcome
- number of aphids consumede0
- Direction
- did not change significantlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of aphids consumed by first‐generation lacewing population did not change significantly with different CO 2 treatments; however, significantly fewer aphids were consumed by the second generation of the lacewing population with elevated CO 2 .”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
Second generation lacewings consumed fewer aphids under elevated CO2.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- elevated CO 2e0
- Outcome
- aphids were consumede0
- Direction
- fewere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of aphids consumed by first‐generation lacewing population did not change significantly with different CO 2 treatments; however, significantly fewer aphids were consumed by the second generation of the lacewing population with elevated CO 2 .”
t0“cotton, Gossypium hirsutum L.”
Claim · model-written summary
The authors speculate that cotton aphids may become more serious pests under elevated CO2 because lacewing predation declines.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- elevated CO 2 concentrationse0
- Interactor
- A. gossypiiAphis gossypiie0pest
- Second interactor
- C. sinicae0other
- Outcome
- more serious peste0
- Qualifier
- reduced predatory abilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We speculate that A. gossypii may become a more serious pest under an environment with elevated CO 2 concentrations because of the reduced predatory ability of C. sinica on A. gossypii .”
t0“cotton, Gossypium hirsutum L.”
The same questions in other papers
co2 · growth · Gossypium hirsutum (cotton)Results differ
4 papers in the same direction as this paper · 18 in the opposite direction
- positive
- positive
- positive
19 papers more in this group
See all 23 papers →co2 · pest · Gossypium hirsutum (cotton)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.