Morphometric and biological parameters of monoclonal and multiclonal populations of giant conifer aphid

• Autor(a) principal: Penteado, Susete do Rocio Chiarello
• Data de Publicação: 2016
• Outros Autores: Noemberg Lazzari, Sonia Maria, de Oliveira, Edilson Batista, Zonta de Carvalho, Regina Celia
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1110
• topic: Fecundity; Progenie; Cinara atlantica; Fecundidade; Progênie; Cinara atlantica

The giant conifer aphid, Cinara atlantica, originated from North America, was introduced in Brazil in the 1990’s and became widely distributed on commercial areas of Pinus. This study was conducted in order to correlate morphometric parameters of mono and multiclonal C. atlantica lineage with its reproductive performance on plant progenies and commercial seedlings. The number of nymphs produced by female by day were registered. After death, measurements of morphological characters were carried out using the program Axion Vision 4.5. Antenna, hind femur and tibia lengths showed the highest correlation with aphids body length, representing 98% of total variation. Based on these variables a new variable was defined as ‘insect size’, which was used to compare treatments. Multiclonal insects had the highest values for most morphometric parameters and largest progeny production. The biggest insects and highest nymph production were observed on commercial seedlings of both nurseries, suggesting that these pine progenies may show some resistance against C. atlantica attack what make them good candidates for integrated pest management programs.