Spiders of a young plantation of eucalypt: diversity and potential predator of the most frequent arboreal species
DOI:
https://doi.org/10.5380/abpr.v34i0.951Palavras-chave:
Aranhas neotropicais, biodiversidade, inimigos naturais, Eucalyptus grandis, cultivo, neotropical spiders, biodiversity, natural enemies, plantation, Araignées néotropicales, biodiversité, ennemies naturels, Eucalyptus grandis.Resumo
Aranhas de um plantio comercial jovem de eucaliptos: diversidade e potencial predador das espécies arbóreas mais freqüentes. Este estudo foi conduzido em áreas de plantio comercial jovem de Eucalyptus grandis, em Botucatu (São Paulo), Brasil, com o objetivo de estimar a composição e diversidade da fauna de aranhas associadas às árvores e serapilheira. Ao longo de 3 km de transecção foram aplicadas as técnicas da bandeja entomológica, captura manual e armadilha-de-solo tipo alçapão no interior e borda do cultivo. Foram obtidos 944 indivíduos de Araneomorphae pertencentes a 17 famílias e 51 espécies dos quais 87,3 % habitantes da copa das árvores. A assembléia destes predadores potencialmente tem impacto sobre as pragas arbóreas mais proeminentes.
Abstract
This study was carried out in area of young commercial Eucalyptus grandis plantation (Botucatu, São Paulo, Brazil) for the evaluation of the spider fauna composition inhabiting their trees and litter. Entomological trays, hand captures and pitfall traps were applied within and on the edges of the plantation along a 3-kilometer transeccion. A total of 944 Araneomorphae individuals belonging to 17 families and 51 species were collected, whereas 87.3% inhabiting the trees. This predator assemblage is has potential to impact against the most prominent arboreal pests.
Résumé
Araignées d’une jeûne plantation commerciale d’eucaliptus: diversité et prédation en potentiel des espèces arboricoles les plus frèquentes. Cette étude a été réalisée dans des aires d’une jeûne plantation commerciale d’Eucalyptus grandis, à Botucatu, État de São Paulo-Brésil, ayant comme objectif d’estimer la composition et la diversité des araignées associées aux arbres et à la litière. Sur une étendue de 3 km, les techniques de plateaux entomologiques, de captures manuelles et de trappes enterrées, ont èté employées pour les èchantillonnáges, à l’intérieur et sur le bord de la plantation. Un total de 944 individus de Araneomorphae appartenant à 17 familles et à 51 espèces a été recueilli, dont 87,3% étaient des résidants de cime d’arbres. Les peuplements de ces prédateurs en potentiel causent impacto sur leurs proies arboricoles les plus proéminantes.
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