Demographic parameters of cowpea aphid Aphis craccivora (Homoptera: Aphididae) on different Botswana cowpea landraces

Machacha, M.; Obopile, Motshwari; Tshegofatso, Aobakwe B.N.; Tiroesele, Bamphitlhi; Gwafila, C.; Ramokapane, M.

doi:10.1017/s1742758412000318

Cited by 12 publications

(8 citation statements)

References 12 publications

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“…These values are very similar to those found in this research on the BRS Guariba cultivar, thus demonstrating its resistance and ability to affect the reproductive potential of A. craccivora. Obopile and Ositile (2010) and Machacha et al (2012) obtained intrinsic growth rate values (0.13 and 0.22) close to those found in this study, demonstrating that the genotypes that showed to be resistant to black aphid were able to negatively affect the reproduction of A. craccivora and, consequently, several demographic parameters. Jalalipour et al 2017 The nutritional quality and specific metabolic types of each cowpea cultivar were possibly important factors for direct interference on the demographic parameters evaluated, causing a positive or negative effect on insect biology, directly reflecting on fecundity, survival and population development (Asiwe, 2009, Panizzi andParra, 2009).…”

Section: Table 2 Demographic Parameterssupporting

confidence: 83%

“…Regarding the interval between generations (T), no significant differences were observed among treatments (P < 0.05) ( Table 2). In this case, none of the cultivars used were able to affect the T value of the black aphid, where the average period of one generation of A. craccivora varies from 6 to 9 days (Machacha et al, 2012). As for the time to double the population (T D ), BRS Guariba treatment significantly differed (P < 0.05) from the others, for which the black aphid presented higher T D (4.55 days), that is, in practical field conditions, it would take this time to double its population in number, unlike BRS Nova Era treatment, which would take only 1.20 days, thus demonstrating the susceptibility of the cultivar to the pest (Table 2).…”

Section: Table 2 Demographic Parametersmentioning

confidence: 93%

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Demographic Parameters of Black Aphid in Cowpea Cultivars

Silva¹,

Nere²,

Bleicher³

et al. 2018

Rev. Cien. Agr.

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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.

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Section: Table 2 Demographic Parameterssupporting

confidence: 83%

Section: Table 2 Demographic Parametersmentioning

confidence: 93%

Demographic Parameters of Black Aphid in Cowpea Cultivars

Silva¹,

Nere²,

Bleicher³

et al. 2018

Rev. Cien. Agr.

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“…It is used as human food due to its high protein content [ 1 ] and also as livestock feed to make silage and hay. Cowpea is the third most important crop in Botswana after maize, Zea mays L., and grain sorghum, Sorghum bicolor (L.) Moench (both Poaceae) [ 2 ]. Production of cowpea in Botswana is about 300–355 kg/ha.…”

Section: Introductionmentioning

confidence: 99%

Control of Cowpea Weevil, Callosobruchus Maculatus (F.) (Coleoptera: Bruchidae), Using Natural Plant Products

Tiroesele

Thomas

Seketeme

2014

Insects

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A laboratory study was conducted to investigate the effects of natural products on the reproduction and damage of Callosobruchus maculatus, the cowpea weevil, on cowpea seeds at Botswana College of Agriculture in Gaborone, Botswana. The cowpea variety Blackeye was used in the study. Fifty grams of each plant product (garlic, peppermint and chilies) was added to 500 g of the cowpea seeds. Findings of this experiment revealed that chilies and garlic had negative effects on cowpea weevils for all parameters measured. Peppermint also showed significant reduction in the F1 progeny of the cowpea weevils but with less effect on weevils than garlic and chilies. The results indicate that these plant products have the potential to protect cowpea seeds from cowpea weevils’ damage compared to when the seeds are left or stored unprotected. They should, therefore, be included in pest management strategies for cowpea weevil in grains stored on-farm in rural tropical and subtropical regions.

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“…bras., Brasília, v.54, e00230, 2019 DOI: 10.1590/S1678-3921.pab2019.v54.00230 least favorable genotypes for aphids. Various studies report that some cowpea genotypes negatively impacted A. craccivora demographic parameters, including a decrease of intrinsic growth rate (Obopile & Ositile, 2010;Machacha et al, 2012;Aliyu & Ishiayaku, 2013). However, r m values found by these authors were lower than those obtained in the present study, which can be attributed to environmental conditions and differences between the studied cowpea genotypes.…”

Section: Genotypementioning

confidence: 99%

Preferences and demographic parameters of cowpea aphid on advanced lines of semiprostrate cowpea

Silva

Nere

Bleicher

et al. 2019

Pesq. agropec. bras.

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The objective of this work was to determine the preference and the demographic parameters of cowpea aphid (Aphis craccivora) in advanced lines of semiprostrate cowpea (Vigna unguiculata), and to verify both the existance and type of plant resistance to this insect attack. Aphid preference to 20 cowpea genotypes was tested in a randomized complete block design, with six replicates. Lines showing the highest levels of resistance and susceptibility in the preference tests were selected for use in the demographic parameter tests. Based on aphid birth rate and mortality, fertility life tables were constructed. The MNCO4-792F-123 line was classified as resistant. The lowest values for cowpea aphid intrinsic and finite growth rates were obtained for the MNCO4-792F-123, and the highest ones for MNCO4-782F-108 and 'BRS Novaera' genotypes, whose levels exceeded those of 'Vita 7', the standard genotype for susceptibility. The MNCO4-792F-123 line is the least favorable for the development of cowpea aphid, while MNCO4-782F-108 and 'BRS Novaera' are the most susceptible ones.

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Demographic parameters of cowpea aphid Aphis craccivora (Homoptera: Aphididae) on different Botswana cowpea landraces

Cited by 12 publications

References 12 publications

Demographic Parameters of Black Aphid in Cowpea Cultivars

Demographic Parameters of Black Aphid in Cowpea Cultivars

Control of Cowpea Weevil, Callosobruchus Maculatus (F.) (Coleoptera: Bruchidae), Using Natural Plant Products

Preferences and demographic parameters of cowpea aphid on advanced lines of semiprostrate cowpea

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