Análise dos danos de coleoptera em sementes de espécies florestais utilizadas em biojóias

Abstract

The objective of this work was search more information about insect that promove damaged in forest species seeds, studing especially the insects damage. Seeds samples used to make biojewellery was collected and take to Forest Entomology Laboratory at Rural University of Rio de Janeiro, where the damages were observed and the family of the insects were identified. The families were: Scolitydae and Anobiidae. It is possible to decrease the insect damage with appropriate seed store or make use of damage seeds, after heating with the objective of eliminate the insects. To know the viability of seed collection, Leguminosae seeds, used in urban forestry, Albizzia lebbeck (L) Bentham, Cassia fistula L., was collected in Seropédica (RJ), one sample with 500 fruits of Albizzia lebbeck (L.) Bentham, after processing, were found: 23,38% of the seeds were damaged by insects, 60,41% of the seeds were empty and 16,21% were not damaged by insects. The sample with 100 fruits of Cassia fistula L. was collected in Itaguaí (RJ) and 83,35% of the seeds were damaged by insects, 10,96% of the seeds were empty and 5,69% were not damaged by insects. The seeds of both species are damaged by Bruchidae. To check the damage caused by insects Anobiidae in the storage, they were placed in contact with healthy seeds and seeds damaged by insects of Albizzia lebbeck (L.) Bentham and seeds of healthy and mechanically damaged of Adenanthera pavonina L. Twenty adult insects were used and 10 seeds for each situation, using five repetitions. After 60 days there was Anobiidae damage just in damaged seeds