By interacting organism › Animals › Pyrgomorphidae › Zonocerus

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Survivorship, longevity and reproductive performance of Zonocerus were greater on cassava and mixed diets than on acalypha and pawpaw.

Taxon: cassavaManihot esculentae1
Treatment: cassava and mixed dietse1
Interactor: ZonocerusZonoceruse1herbivore
Outcome: Survivorship and longevitye1
Direction: greatere1
Comparator: those fed only on Acalypha and pawpawe1

Verbatim

e1
“Survivorship and longevity of nymphs and the reproductive performance of adult Zonocerus was greater and better for insect fed on cassava and mixed diets, as compared to those fed only on Acalypha and pawpaw”
✓ located verbatim in the source · abstract, characters 291–498

Title

Effects of some Food Plants on the Growth, Development and Fecundity of Zonocerus variegatus (L)

A.B. IDOWU; O.A. SONDE Nigerian Journal of Entomology 2004. doi:10.36108/nje/4002/22.0160

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Natural grasshopper defoliation differed considerably in amount and timing across years.

Taxon: cassavaManihot esculentat0
Interactor: ZonocerusZonoceruse0pest
Outcome: natural defoliation by Zonoceruse0

Verbatim

e0
“Monitoring of natural defoliation by Zonocerus in successive years showed there were considerable differences in amount and timing.”
✓ located verbatim in the source · abstract, characters 1065–1196

t0
“cassava”
✓ located verbatim in the source · title, characters 40–47

Title

Defoliation and consequent crop loss in cassava caused by the grasshopper Zonocerus variegatus (L.) (Orthoptera: Pyrgomorphidae) in southern Nigeria

W. W. Page; J. R. W. Harris; A. Youdeowei Bulletin of Entomological Research 1980. doi:10.1017/s0007485300009858

Other claims from this paper (8)

Intervention effect Defoliation significantly reduced tuber yield only late in the dry season after leaf regeneration began.
Intervention effect Late dry-season defoliation delayed leaf regeneration.
Intervention effect Six weeks of continuous end-of-season defoliation caused 63% mean crop loss.
Intervention effect Simulated debarking caused 49% mean crop loss.
Intervention effect Confined grasshoppers caused 36% mean crop loss.
Intervention effect The grasshopper-associated loss was less than simulated defoliation loss.
Intervention effect Defoliation before wet-season leaf regeneration caused no significant crop loss.
Observation The authors conclude grasshopper damage causes significant crop loss only occasionally.

Observationauthor interpretationoriginal resultsignificant (as stated)measured

Claim · model-written summary

The authors conclude grasshopper damage causes significant crop loss only occasionally.

Taxon: cassavaManihot esculentat0
Interactor: ZonocerusZonoceruse0pest
Outcome: crop loss due to Zonocerus damagee0
Qualifier: only occasionallye0

Verbatim

e0
“crop loss due to Zonocerus damage is significant only occasionally despite defoliation occuring every year”
✓ located verbatim in the source · abstract, characters 1218–1324

t0
“cassava”
✓ located verbatim in the source · title, characters 40–47

Title

Defoliation and consequent crop loss in cassava caused by the grasshopper Zonocerus variegatus (L.) (Orthoptera: Pyrgomorphidae) in southern Nigeria

W. W. Page; J. R. W. Harris; A. Youdeowei Bulletin of Entomological Research 1980. doi:10.1017/s0007485300009858

Other claims from this paper (8)

Intervention effect Defoliation significantly reduced tuber yield only late in the dry season after leaf regeneration began.
Intervention effect Late dry-season defoliation delayed leaf regeneration.
Intervention effect Six weeks of continuous end-of-season defoliation caused 63% mean crop loss.
Intervention effect Simulated debarking caused 49% mean crop loss.
Intervention effect Confined grasshoppers caused 36% mean crop loss.
Intervention effect The grasshopper-associated loss was less than simulated defoliation loss.
Intervention effect Defoliation before wet-season leaf regeneration caused no significant crop loss.
Observation Natural grasshopper defoliation differed considerably in amount and timing across years.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Zonocerus variegatus oviposits in dense aggregations under single or clumped woody plants or at the edge of tall continuous vegetation.

Taxon: woody plantse1
Interactor: ZonocerusZonoceruse1herbivore
Outcome: oviposits in dense aggregationse1
Setting: southern Nigeriae1

Verbatim

e1
“The dry‐season population of Zonocerus in southern Nigeria oviposits in dense aggregations under single or clumped woody plants or on the edge of tall continuous stands of vegetation”
✓ located verbatim in the source · abstract, characters 13–195

Title

Characteristics and distribution of opposition sites of the grasshopper Zonocerus variegatus (L.)

W. W. PAGE; A. R. McCAFFERY Ecological Entomology 1979. doi:10.1111/j.1365-2311.1979.tb00585.x

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

No egg pods were found oviposited singly.

Taxon: woody plantse1
Interactor: ZonocerusZonoceruse1herbivore
Outcome: oviposited singlye2

Not reportedDirection

Verbatim

e1
“The dry‐season population of Zonocerus in southern Nigeria oviposits in dense aggregations under single or clumped woody plants or on the edge of tall continuous stands of vegetation”
✓ located verbatim in the source · abstract, characters 13–195

e2
“No egg pods were found oviposited singly”
✓ located verbatim in the source · abstract, characters 197–237

Title

Characteristics and distribution of opposition sites of the grasshopper Zonocerus variegatus (L.)

W. W. PAGE; A. R. McCAFFERY Ecological Entomology 1979. doi:10.1111/j.1365-2311.1979.tb00585.x

Other claims from this paper (10)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Oviposition sites tended to be found close to cassava.

Taxon: cassavaManihot esculentae5
Interactor: ZonocerusZonoceruse1herbivore
Outcome: oviposition sitese5
Direction: marked tendencye5

Verbatim

e1
“The dry‐season population of Zonocerus in southern Nigeria oviposits in dense aggregations under single or clumped woody plants or on the edge of tall continuous stands of vegetation”
✓ located verbatim in the source · abstract, characters 13–195

e5
“There was a marked tendency for oviposition sites to be found close to cassava”
✓ located verbatim in the source · abstract, characters 820–898

Title

Characteristics and distribution of opposition sites of the grasshopper Zonocerus variegatus (L.)

W. W. PAGE; A. R. McCAFFERY Ecological Entomology 1979. doi:10.1111/j.1365-2311.1979.tb00585.x

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Cassava latex was not distasteful to Zonocerus.

Taxon: cassavaManihot esculentat0
Interactor: ZonocerusZonoceruse0herbivore
Compound: latexe0
Outcome: not distastefule0

Verbatim

e0
“Cassava produces latex, but this was not distasteful to Zonocerus .”
✓ located verbatim in the source · abstract, characters 595–662

t0
“cassava”
✓ located verbatim in the source · title, characters 80–87

Title

The relationship of Zonocerus variegatus (L.) (Acridoidea: Pyrgomorphidae) with cassava (Manihot esculenta)

E. A. Bernays; R. F. Chapman; E. M. Leather; et al. Bulletin of Entomological Research 1977. doi:10.1017/s0007485300011202

Other claims from this paper (9)

Observation Young Zonocerus nymphs reject cassava after biting it.
Observation Young nymphs die when confined to growing cassava leaves.
Observation Later instars eat cassava, especially after food deprivation.
Observation Adults lost weight while restricted to growing cassava.
Observation Cut cassava supported extensive feeding and normal growth.
Observation Cutting changed cassava from unpalatable to acceptable within about an hour.
Observation Feeding on growing cassava was associated with low leaf hydrogen cyanide production.
Observation Wilted leaves produced hydrogen cyanide more slowly than turgid growing leaves.
Observation Zonocerus regularly defoliated cassava late in the dry season near Ibadan.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Zonocerus regularly defoliated cassava late in the dry season near Ibadan.

Taxon: cassavaManihot esculentat0
Interactor: ZonocerusZonoceruse0herbivore
Outcome: defoliates cassavae0
Qualifier: latter part of the dry seasone0
Setting: area around Ibadane0

Verbatim

e0
“In the area around Ibadan, Zonocerus regularly defoliates cassava in the latter part of the dry season”
✓ located verbatim in the source · abstract, characters 877–979

t0
“cassava”
✓ located verbatim in the source · title, characters 80–87

Title

The relationship of Zonocerus variegatus (L.) (Acridoidea: Pyrgomorphidae) with cassava (Manihot esculenta)

E. A. Bernays; R. F. Chapman; E. M. Leather; et al. Bulletin of Entomological Research 1977. doi:10.1017/s0007485300011202

Other claims from this paper (9)

Observation Young Zonocerus nymphs reject cassava after biting it.
Observation Young nymphs die when confined to growing cassava leaves.
Observation Later instars eat cassava, especially after food deprivation.
Observation Adults lost weight while restricted to growing cassava.
Observation Cut cassava supported extensive feeding and normal growth.
Observation Cutting changed cassava from unpalatable to acceptable within about an hour.
Observation Cassava latex was not distasteful to Zonocerus.
Observation Feeding on growing cassava was associated with low leaf hydrogen cyanide production.
Observation Wilted leaves produced hydrogen cyanide more slowly than turgid growing leaves.

Zonocerus 8 claims

8 claims