Population dynamics of Aphis gossypii Glover and in sole and intercropping systems of cotton and cowpea
AUTOR(ES)
FERNANDES, FRANCISCO S., GODOY, WESLEY A.C., RAMALHO, FRANCISCO S., GARCIA, ADRIANO G., SANTOS, BÁRBARA D.B., MALAQUIAS, JOSÉ B.
FONTE
An. Acad. Bras. Ciênc.
DATA DE PUBLICAÇÃO
01/02/2018
RESUMO
ABSTRACT Population dynamics of aphids have been studied in sole and intercropping systems. These studies have required the use of more precise analytical tools in order to better understand patterns in quantitative data. Mathematical models are among the most important tools to explain the dynamics of insect populations. This study investigated the population dynamics of aphids Aphis gossypii and Aphis craccivora over time, using mathematical models composed of a set of differential equations as a helpful analytical tool to understand the population dynamics of aphids in arrangements of cotton and cowpea. The treatments were sole cotton, sole cowpea, and three arrangements of cotton intercropped with cowpea (t1, t2 and t3). The plants were infested with two aphid species and were evaluated at 7, 14, 28, 35, 42, and 49 days after the infestations. Mathematical models were used to fit the population dynamics of two aphid species. There were good fits for aphid dynamics by mathematical model over time. The highest population peak of both species A. gossypii and A. craccivora was found in the sole crops, and the lowest population peak was found in crop system t2. These results are important for integrated management programs of aphids in cotton and cowpea.
Documentos Relacionados
- The behavior of Aphis gossypii and Aphis craccivora (Hemiptera: Aphididae) and of their predator Cycloneda sanguinea (Coleoptera: Coccinellidae) in cotton-cowpea intercropping systems
- Sequential sampling of Aphis gossypii Glover (Hemiptera: Aphididae) and Frankliniella schultzei Trybom (Thysanoptera: Thripidae) on cotton crop
- Subsídios para um programa de manejo da resistência de Aphis gossypii Glover, 1877 a inseticidas na cultura do algodão.
- Effect of silicon and acibenzolar-s-methyl on colored cotton plants infested or not with Aphis gossypii Glover (Hemiptera, Aphididae)
- Effects of botanical insecticides formulations and essential oils on the biology and behavior of Aphis gossypii Glover (Hemiptera : Aphididae) in cotton