ABSTRACT
ABSTRACT Bactrocera carambolae Drew & Hancock (Diptera: Tephritidae), native of Southeast Asia, is present in Brazil but restricted to Amapá, Pará and Roraima, where it has quarantine pest status. The possible dispersion to other fruit producing regions of Brazil could cause damages, including for exportation, due to quarantine restrictions imposed by fruit importing countries. The objective of this work was to describe the biological parameters and calculate the fertility life table of B. carambolae on grape (Vitis vinifera L.) and acerola (Malpighia emarginata DC.). The experiment was conducted in the laboratory under controlled conditions. The mean number of punctures and the mean number of eggs per female on grapes were 1.48 ± 0.05 and 9.87 ± 0.36, respectively. The mean number puparia per fruit was 0.1 ± 0.02 (grape) and 0.5 ± 0.10 (acerola). The pupal viability was 82.4% (grape) and 70.6% (acerola). The mean time ± SE of one generation, in days, was 25.8 ± 1.10 (grape) and 19.7 ± 0.21 (acerola). The mean fecundity was 1663.8 ± 501.01 (grape) and 206.9 ± 26.21 (acerola) with eggs viability of 5.6% (grape) and 12.5% (acerola). The mean longevity, in days, was 77.3 ± 12.13 on grape and 82.4 ± 4.24 on acerola. The study found that B. carambolae completes its biological cycle on grape and on acerola leaving offspring.
ABSTRACT
The açaí palm (Euterpe oleracea) is an East Amazon palm found most frequently in the Amazon River estuary. Riverside dwellers in different regions of the state of Amapá have recently been observing a species of coleopteran attacking the inflorescences of açai palms. With a view to identifying a species of coleopteran attacking inflorescences of E. oleracea in the Brazilian state of Amapá, insects were collected in the regions of Abacate da Pedreira (two individuals) and Ariri (six) in the city of Macapá. Five individuals were also collected in Mazagão. The insects were collected from açai palm inflorescences using entomological nets, then preserved and submitted for identification. They were identified as Macraspis pseudochrysis Landin, 1956 (Coleoptera: Scarabaeidae: Rutelinae). This is the first occurrence of M. pseudochrysis in E. oleracea in the Neotropics.
O açaizeiro [Euterpe oleracea] é uma palmeira da Amazônia Oriental encontrada com mais freqüência no estuário do Rio Amazonas. Recentemente, ribeirinhos em diferentes regiões do estado do Amapá observaram uma espécie de coleóptero que ataca as inflorescências de açaízeiros. Com o objetivo de identificar exemplares de Coleoptera em inflorescências de E. oleracea no estado do Amapá, Brasil, foram coletados 13 indivíduos nas localidades de Abacate da Pedreira (dois exemplares), Ariri (seis)(ambas em Macapá) e no município de Mazagão (cinco), entre outubro de 2010 e fevereiro de 2011. Os coleópteros foram coletados diretamente nas inflorescências de açaizeiros com auxílio de rede entomológica, conservados e enviados para identificação. Todos os indivíduos pertencem à espécie Macraspis pseudochrysis Landin, 1956 (Coleoptera: Scarabaeidae: Rutelinae). Este é o primeiro registro de ocorrência de M. pseudochrysis em E. oleracea na região neotropical.