Behavioural response of alate Aphis craccivora Koch (Homoptera: Aphididae) to volatiles from different cowpea cultivars

2019 ◽  
Vol 143 (6) ◽  
pp. 659-669
Author(s):  
Seydou Diabate ◽  
Emilie Deletre ◽  
Lucy Kananu Murungi ◽  
Komi K.M. Fiaboe ◽  
John Wesonga ◽  
...  
Keyword(s):  
Behavioural Response ◽  
Aphis Craccivora ◽  
Cowpea Cultivars ◽  
Aphis Craccivora Koch

Feeding behaviour of Aphis craccivora (Koch) on cowpea cultivars with different levels of aphid resistance

1992 ◽  
Vol 121 (3) ◽  
pp. 493-501 ◽  
Author(s):  
T. MESFIN ◽  
G. THOTTAPPILLY ◽  
S. R. SINGH
Keyword(s):  
Feeding Behaviour ◽  
Aphis Craccivora ◽  
Aphid Resistance ◽  
Cowpea Cultivars ◽  
Aphis Craccivora Koch ◽  
Different Levels

Parasitoid–host relationship between Trioxys (Binodoxys) indicus Subba Rao &Sharma (Hymenoptera: Aphidiidae) and Aphis craccivora Koch (Hemiptera: Aphididae): effect of host plants on the area of discovery of the parasitoid

1985 ◽  
Vol 63 (1) ◽  
pp. 192-195 ◽  
Author(s):  
Arvind Kumar ◽  
C. P. M. Tripathi
Keyword(s):  
Host Plants ◽  
Solanum Melongena ◽  
Host Density ◽  
Mass Rearing ◽  
Behavioural Response ◽  
Aphis Craccivora ◽  
Alternative Host ◽  
K Value ◽  
Dolichos Lablab ◽  
Aphis Craccivora Koch

This paper elucidates the effect of different host plants on the area of discovery of the parasitoid Trioxys (Binodoxys) indicus, which decreases linearly with the increase of parasitoid density. This decrease is minimum in aphids reared on Cajanus cajan followed by those reared on Dolichos lablab and Solanum melongena, but the killing power (k value) increases significantly in all the tested host plants, being maximum in aphids reared on C. cajan followed by those reared on D. lablab and S. melongena. However, when the host density increases, the area of discovery and k value (high in C. cajan aphids followed by D. lablab and S. melongena aphids) increases up to 50 hosts and thereafter decreases. The leaf texture of the host plants and the interference between the parasitoids at higher densities is suggested as a cause for this type of behavioural response which is explained by the population model of M. P. Hassell and G. C. Varley. For the suppression of Aphis craccivora population, it is suggested that the parasitoid and the host ratio may be 1:50 and for the mass rearing of the parasitoid, when C. cajan is not available in the field, D. lablab may be used as an alternative host plant.

scholarly journals DEMOGRAPHIC PARAMETERS OF BLACK APHID IN COWPEA CULTIVARS

2018 ◽  
Vol 16 (1) ◽  
pp. 69 ◽  
Author(s):  
LEANDRO CARVALHO DA SILVA ◽  
DANIEL RODRIGUES NERE ◽  
ERVINO BLEICHER ◽  
ANTÕNIO VINICIUS CORREA BARBOSA ◽  
ERALDO JOSÉ MADUREIRA TAVARES
Keyword(s):  
Vigna Unguiculata ◽  
Aphis Craccivora ◽  
Demographic Parameters ◽  
Cowpea Cultivars ◽  
Aphis Craccivora Koch

Pode-se dizer que a sobrevivência e o desenvolvimento de Aphis craccivora Koch (Hemiptera: Aphididae) é afetado pelo tipo de planta hospedeira. Objetivou-se estimar os parâmetros demográficos do pulgão-preto (Aphis craccivora Koch) em cultivares de feijão-caupi (Vigna unguiculata (L.) Walp.) recomendadas para a colheita mecanizada no Brasil. Foram usadas as cultivares: BRS Pingo de Ouro, BRS Tumucumaque, BRS Itaim, BRS Nova Era, BRS Imponente e BRS Guariba. A cultivar VITA 7 fez parte do estudo na qualidade de padrão de susceptibilidade ao inseto. Foi formado uma coorte, onde cada cultivar teve 10 plantas como réplicas, e cada réplica recebeu um pulgão. Foram registrados diariamente o número de indivíduos vivos, o número de descendentes, os quais em seguida eram retirados e a longevidade dos insetos da coorte. A razão finita de crescimento (λ) do pulgão-preto nas cultivares BRS Nova Era, BRS Imponente, BRS Tumucumaque, VITA 7, BRS Itaim, BRS Pingo de Ouro e BRS Guariba foi, respectivamente, de 1,77, 1,74, 1,73, 1,73, 1,73, 1,71 e 1,16. Os dados sugerem que a cultivar BRS Guariba apresenta resistência do tipo antibiose frente ao pulgão-preto, e que possivelmente sua população não deve estar sujeita a surtos.

Potency of Three Botanical Oils Against the Aphis Craccivora Koch (Homoptera: Aphididae) Nymphs Under Laboratory Conditions

2021 ◽  
Vol 19 (1) ◽  
pp. 139-154
Author(s):  
MA Hossain ◽  
MS Yasmin ◽  
MAA Bachchu ◽  
MA Alim
Keyword(s):  
Treatment Time ◽  
Probit Analysis ◽  
Aphis Craccivora ◽  
Tween 20 ◽  
Laboratory Conditions ◽  
Significant Difference ◽  
Aphis Craccivora Koch ◽  
Insect Mortality ◽  
Oil Repellent ◽  
Swietenia Mahagoni

Botanicals are promising and attractive alternatives for pest management. In the present study, three botanical oils namely neem (Azadirachta indica), karanja (Pongamia pinnata) and mehogony (Swietenia mahagoni) were tested against the nymphs of Aphis craccivora Koch to evaluate the toxic and repellent effects under laboratory conditions (25 ± 5oC, 65-75% RH). Four concentrations (0.5, 1.0, 1.5, and 2.0%) along with control were maintained with distilled water and tween-20 was used as emulsifier. Leaf dipped method were used for insect bioassay. Insect mortality was recorded at 24, 48 and 72 hours after intervals while repellency was carried out at 2 hours after intervals upto 10th hours and the collected data were analyzed through MSTAT-C program. Results indicated that all the tested oils had toxic and repellent effects against the A. craccivora nymphs. Among the tested botanical oils, no significant difference was observed in terms of mortality over treatment time. But significant difference was noticed over level of concentrations exerted by the botanical oils. The average highest mortality (28.62%) was recorded by the application of mehogony oil whereas neem oil showed the lowest mortality (27.21%) against the A. craccivora and the mortality was directly proportional to the level of concentrations and hour after treatment (HAT). Probit analysis showed the lowest LD50 values of mehogony oil which revealed the highest toxic effect against the nymph of bean aphid. The highest repellent effect (77.33%) was found in mehogony oil (repellent class IV) among all the botanical oils applied. On the contrary, neem (57.33%) and karanja (55.00%) oils belonged to the same repellent class that is repellent class II. Although all the tested botanical oils evaluated showed toxic and repellent effects but mehogony oil performed as the best potent oil against the nymphs. We therefore suggested using the mehogony oil for the management of bean aphid. SAARC J. Agric., 19(1): 139-154 (2021)

scholarly journals Using of Entomopathogenic Fungi against Fabae bean Aphid, Aphis craccivora (Koch)

2019 ◽  
Vol 12 (01) ◽  
pp. 216-222
Author(s):  
I. E. Abdel-Rahman ◽  
F. H. Faragalla
Keyword(s):  
Entomopathogenic Fungi ◽  
Aphis Craccivora ◽  
Aphis Craccivora Koch

scholarly journals Damage assessment and biorational management of bean aphid, Aphis craccivora Koch

2020 ◽  
pp. 1
Author(s):  
Sonia Sultana ◽  
Mohammad Uddin ◽  
Khandakar Islam
Keyword(s):  
Damage Assessment ◽  
Aphis Craccivora ◽  
Aphis Craccivora Koch

Reproductive performance of four aphidophagous ladybirds on cowpea aphid, Aphis craccivora Koch

2005 ◽  
Vol 129 (4) ◽  
pp. 217-220 ◽  
Author(s):  
G. Mishra ◽  
S. Srivastava ◽  
A. K. Gupta ◽  
S. K. Singh
Keyword(s):  
Reproductive Performance ◽  
Aphis Craccivora ◽  
Cowpea Aphid ◽  
Aphis Craccivora Koch

Effects of intersowing with beans on the spread of groundnut rosette virus by Aphis craccivora Koch (Hemiptera, Aphididae) in Malawi

1976 ◽  
Vol 66 (2) ◽  
pp. 331-333 ◽  
Author(s):  
J. A. K. Farrell
Keyword(s):  
Phaseolus Vulgaris ◽  
Arachis Hypogaea ◽  
Virus Disease ◽  
High Density ◽  
Aphis Craccivora ◽  
Plant Populations ◽  
Bean Plants ◽  
Aphis Craccivora Koch ◽  
Field Beans

AbstractIn two trials, at Chitedze, Malawi, in 1966–1967, the spread of rosette virus disease in groundnuts (Arachis hypogaea) intersown with field beans (Phaseolus vulgaris) was less than the spread in groundnut monocultures comprising plant populations equivalent to the number of groundnut plants and to the total number of plants in the intersown crop. In one trial, numbers of early rosette transmissions were related to numbers of alate Aphis craccivora Koch, the vector of the virus, found on groundnut plants. Immigrant alate A. craccivora settling on the intersown crop were trapped by the hooked epidermal hairs of the bean plants and the observed reduction of rosette infection in the intersown crop was attributed to this effect. Inter-sowing with beans is considered less effective than early-sown, high-density monoculture as a method of reducing groundnut rosette infections and yields of groundnuts from inter-sown crops may be lower than those obtained from high-density monoculture.

scholarly journals Effects of Ant-Attendance on the Honeydew Excretion and Larviposition of the Cowpea Aphid, Aphis craccivora Koch

1982 ◽  
Vol 17 (1) ◽  
pp. 133-135 ◽  
Author(s):  
Susumu TAKEDA ◽  
Kyoichi KINOMURA ◽  
Hironori SAKURAI
Keyword(s):  
Aphis Craccivora ◽  
Cowpea Aphid ◽  
Aphis Craccivora Koch ◽  
Ant Attendance ◽  
Honeydew Excretion

scholarly journals Resistance in alfalfa to Aphis craccivora Koch

2015 ◽  
Vol 75 (4) ◽  
pp. 451-456 ◽  
Author(s):  
Lilian R Descamps ◽  
Carolina Sánchez-Chopa ◽  
Jorge Bizet-Turovsky
Keyword(s):  
Aphis Craccivora ◽  
Aphis Craccivora Koch
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