Insects of the Subfamily Scolytinae (Insecta: Coleoptera, Curculionidae) Collected with Pitfall and Ethanol Traps in Primary Forests of Central Amazonia

Abstract

An experiment was conducted in a primary forest area of the Tropical Forest Experimental Station, 45 km from Manaus-Boa Vista Highway, in order to compare the insect fauna of the subfamily Scolytinae, in flight activity and on the ground. Five impact traps of the type Escolitideo/Curitiba, with ethanol baits, were installed at the height of 3 m above the ground, and five pitfall traps were buried in the same area of the above ground traps. The data collections were evaluated through abundance, richness, and Simpson diversity index, and, to compare these data with the pitfalls and the months collection, the ANOVA was used. The Pearson correlation test was also carried out to evaluate the meteorological factors (temperature and rainfall). From the total of 2,910 Scolytinae, 2,341 were captured in pitfall traps representing 80.45% and 569 with Escolitideo/Curitiba traps representing 19.55%. The most abundant species in the collections wereXyleborus volvulusFabricius andXyleborus affinisEichhoff, and this was classified as constant in both habitats. The result of the analysis indicates that the Simpson’s index was high and that the abundance of insects was affected by the types of trap and by the month of collection. The analysis of correlation with meteorological factors showed that onlyXyleborus spinulosusspecies presented significant correlation with temperature.

Diversidade de Scolytinae (Coleoptera: Curculionidae) em diferentes paisagens no norte do Brasil

“…The fact that the genus Xyleborus presented the greatest abundance and richness is consistent with the results of several studies (Abreu et al, 2012;Kendra et al, 2011;Meurer et al, 2013). Although beetles of this genus may be considered beneficial, because they favor natural disbranching and contribute to degradation of wood waste in reforested areas, some species may cause high negative economic impacts, damaging large amounts of fresh-cut or stored wood (Wood, 1982;Meurer et al, 2013).…”

“…These insects are well-known forest pests and also play an important role in wood degradation (Gray, 1972). In the Amazon biome, these beetles were also found to attack several forest and fruit trees (Abreu, 1992;Barbosa, 1994;Dall'Oglio and Peres-Filho, 1997;Abreu et al, 2012).…”

Bark beetles in a mixed plantation of Bertholletia excelsa and Hevea brasiliensis in the southern amazon

“…The species Xyleborus spinulosus had a preference for a wide variety of hosts and has been registered by other researchers in native forest areas PERES FILHO, 2001;ROCHA et al, 2011b;ABREU et al, 2012) and in rubber plantations (DALL`OGLIO; PERES FILHO, 1997; FLECHTMANN; GASPARETO, 1997), demonstrating its wide occurrence in different forest ecosystems.…”

Estrutura da vegetação e sua relação com a diversidade, abundância e similaridade de coleópteros bioindicadores em diferentes sistemas vegetacionais, Piracicaba, SP

“…SAFb Pasto Café SAFcs Seringueira Geral Cobertura (%) Abundância 0,37 -0,05 0,69*** 0,69** --0,37 0,24 0,33*** Riqueza 0,37 -0,08 0,68*** 0,77*** --0,33 0,05 0,32** 33,9 ± 12,7 12,2 ± 0,7 18,9 ± 7,1 59,9± 25,6 9,9 ± 1,8 15,2 ± 0,73 26,9 ± 5,5 27,2 ± 5,3 Chao 2 Jackknife 2 34,2 ± 0,0 14,2 ± 0,0 18,72 ± 0 38,9 ± 0,0 12,7± 0,0 15,7 ± 0,0 31,4 ± 0,0 31,4 ± 0,0 , 1997;ABREU et al, 2012;ROCHA 2011;MÜLLER;ANDREIV, 2004), povoamento de eucalipto (ROCHA, 1993;MARQUES, 2005), povoamento de pinus (Flechtmann, 1995), plantíos de seringueira (DALL`OGLIO; PERES FILHO, 1997) e em mamguezal (SILVA, 2012).…”

“…Pesquisas realizadas no Brasil analisando a diversidade de Scolytinae demonstram uma grande abundância do gênero que Xyleborus (DORVAL;PERES FILHO, 2001;MÜLLER;ANDREIV, 2004; MEURER, 2013). volvulus tem sido coletada por outros autores em áreas de floresta na Amazônia (ABREU; FONSECA;MARQUES, 1997;ABREU et al, 2012). Como foi corroborado neste estudo, Xyleborus spinulosus é uma espécie com preferência por uma grande variedade de hospedeiros.…”