Fauna de besouros Bostrichidae e Curculiondae associados a áreas de restauração florestal

Abstract

The objective of this work was to study the richness and abundance of the Bostrichidae family and the subfamilies Scolytinae and Platypodinae (Coleoptera: Curculionidae) in two forest restoration areas and a forest fragment. The study was developed at Fazenda Santa Anastácia, in the municipality of Sorriso, Mato Grosso, in an area that is part of a Project for the Recovery of Degraded Areas (PRAD) in a Legal Reserve, comprising three areas: i) Legal Reserve Area (ARL) under recovery called Água Mansa; ii) ARL under recovery called Angico; and, iii) Forest fragment - Reference area. Collections were carried out between February and September 2021, using 15 ethanol traps (adapted from the ESALQ 84 model), 5 in each area, installed 1.5m above the ground, spaced 25m apart. The attractant used was 96˚GL alcohol and a solution with water, drops of detergent and salt was used at the bottom of the traps. The collected material was taken to the Forest Ecology laboratory at the Federal University of Mato Grosso, Sinop Campus, where it went through a screening process and was packaged in eppendorf bottles containing 70% alcohol. Subsequently, the insects were sent to Doctor Carlos Alberto Hector Flechtmann at the Plant Protection Laboratory, at Universidade Estadual Paulista Júlio de Mesquita Filho, Campus de Ilha Solteira-SP, for identification. 2,754 individuals of 59 species were collected, with the Scolytinae subfamily being the most representative, followed by the Bostrichidae and Platypodinae families. The species that had the highest abundance in the three study areas were Premnobius cavipennis, (43.06%), Xyleborus affinis (21.17%) and Hypothenemus eruditus (12.56%), all belonging to the Scolytinae subfamily, being the most representative in the three areas of study with 96.91%. The area called angico showed greater abundance, followed by Água Mansa and Fragmento Florestal with 1,046, 872 and 836 individuals, respectively. On the other hand, the Forest Fragment presented greater richness, followed by Angico and Água Mansa with 42, 37 and 35 species, respectively. 13 species were recorded only in the forest fragment, more conserved areas tend to have greater richness and lower abundance per species.