Abstract
Abstract Entomopathogenic fungi, with their cosmopolitan existence and rich diversity, present a sustainable solution towards integrated pest management programs. Due to their eco-friendliness and bio-persistence, these entomopathogens are preferred to kill insects at various stages of their life cycle. The Cowpea seed beetle, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae), is an important bruchid pest in cowpea seed storages. The used pesticides against this pest have caused the occurrence of resistant populations and direct toxicity to the users. The objective of this study was to evaluate the mortality effects of two entomopathogenic fungi isolates obtained from fungi isolated from adults of C. maculatus collection, Beauveria bassiana and Isaria fumosorosea , against the larval stages of C. maculatus under laboratory conditions. The mortality percentage of 2 nd instar larval mortality peaked at 100% when the B. bassiana spores’ concentration was 4*10 5 . On the other hand, the effect of I. fumosorosea spores’ concentration on 2 nd instar larvae peaked at 76.67% when the spores’ concentration was 4*10 5 , while it peaked at 73.33% when the I. fumosorosea extract concentration was 100%. For 4 th instar larvae, the results had shown the same pattern of effects by B. bassiana and I. fumosorosea spores and extract, with mortality percentage peaked at 96.67% when the B. bassiana spores’ concentration was 4*10 5 , while it peaked at 83.33% when the B. bassiana extract concentration was 100%. In contrast, the effect of I. fumosorosea extract concentration on 4 th instar larval mortality peaked at 70% when the extract concentration was 4*10 5 , while it peaked at 73.33% when the I. fumosorosea extract concentration was 100%. For larvae, the relationship between the mortality percentage and (spores or extract) concentration, with increasing duration of exposure to the fungus spores, was positive, whereas the larval mortality increased when the fungus, spores or extract, concentration was raised.
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Claims 8
Claim · model-written summary
B. bassiana spores at 4*10 5 yielded peak second-instar beetle mortality of 100%.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- B. bassiana spores’ concentration was 4*10 5e0
- Interactor
- B. bassiana
Beauveria bassianae0biocontrol_agent - Outcome
- 2 nd instar larval mortalitye0
- Direction
- peakede0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mortality percentage of 2 nd instar larval mortality peaked at 100% when the B. bassiana spores’ concentration was 4*10 5”
e1“cowpea seed storages”
Claim · model-written summary
I. fumosorosea spores at 4*10 5 yielded peak second-instar mortality of 76.67%.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- I. fumosorosea spores’ concentratione0
- Interactor
- I. fumosoroseae0biocontrol_agent
- Outcome
- 2 nd instar larvaee0
- Direction
- peakede0
- Value
- 76.67%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of I. fumosorosea spores’ concentration on 2 nd instar larvae peaked at 76.67% when the spores’ concentration was 4*10 5”
e1“cowpea seed storages”
Claim · model-written summary
I. fumosorosea extract at 100% yielded peak second-instar mortality of 73.33%.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- I. fumosorosea extract concentration was 100%e0
- Interactor
- I. fumosoroseae0biocontrol_agent
- Outcome
- it peakede0
- Direction
- peakede0
- Value
- 73.33%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2 nd instar larvae peaked at 76.67% when the spores’ concentration was 4*10 5 , while it peaked at 73.33% when the I. fumosorosea extract concentration was 100%”
e1“cowpea seed storages”
Claim · model-written summary
B. bassiana spores at 4*10 5 yielded peak fourth-instar mortality of 96.67%.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- B. bassiana spores’ concentration was 4*10 5e0
- Interactor
- B. bassianaBeauveria bassianae0biocontrol_agent
- Outcome
- mortality percentagee0
- Direction
- peakede0
- Value
- 96.67%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mortality percentage peaked at 96.67% when the B. bassiana spores’ concentration was 4*10 5”
e1“cowpea seed storages”
Claim · model-written summary
B. bassiana extract at 100% yielded peak fourth-instar mortality of 83.33%.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- B. bassiana extract concentration was 100%e0
- Interactor
- B. bassianaBeauveria bassianae0biocontrol_agent
- Outcome
- it peakede0
- Direction
- peakede0
- Value
- 83.33%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it peaked at 83.33% when the B. bassiana extract concentration was 100%”
e1“cowpea seed storages”
Claim · model-written summary
I. fumosorosea extract at 4*10 5 yielded peak fourth-instar mortality of 70%.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- I. fumosorosea extract concentratione0
- Interactor
- I. fumosoroseae0biocontrol_agent
- Outcome
- 4 th instar larval mortalitye0
- Direction
- peakede0
- Value
- 70%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of I. fumosorosea extract concentration on 4 th instar larval mortality peaked at 70% when the extract concentration was 4*10 5”
e1“cowpea seed storages”
Claim · model-written summary
I. fumosorosea extract at 100% yielded peak fourth-instar mortality of 73.33%.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- I. fumosorosea extract concentration was 100%e0
- Interactor
- I. fumosoroseae0biocontrol_agent
- Outcome
- it peakede0
- Direction
- peakede0
- Value
- 73.33%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, the effect of I. fumosorosea extract concentration on 4 th instar larval mortality peaked at 70% when the extract concentration was 4*10 5 , while it peaked at 73.33% when the I. fumosorosea extract concentration was 100%.”
e1“cowpea seed storages”
Claim · model-written summary
Larval mortality rose with fungal concentration and exposure duration.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- fungus, spores or extract, concentratione0
- Outcome
- larval mortalitye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the larval mortality increased when the fungus, spores or extract, concentration was raised”
e1“cowpea seed storages”
The same questions in other papers
Beauveria bassiana · pest · Vigna unguiculata (cowpea)Results agree
1 paper in the same direction as this paper
- positive
botanical · pest · Vigna unguiculata (cowpea)Positive and negative results
122 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
122 papers more in this group
See all 126 papers →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.