ABSTRACT
This study was perfomed to assess the in vitro effect of oil from the seed of andiroba (Carapa guianensis Aubl.) on Felicola subrostratus (Burmeister, 1838) (Mallophaga: Trichodectidae). Six hundred specimens of F. subrostratus from neighborhood of Jordão, Recife-PE, Brazil, were collected by hand directly from the fur of cats infested naturally. The lice were transported in plastic recipients to the Laboratory of Parasitic Diseases of Domesticated Animals of the Department of Veterinary Medicine of the Universidade Federal Rural de Pernambuco (Brazil) for the immersion test. Four dilutions of andiroba oil (100, 50, 25 and 10%) in distilled water were tested, using Tween 80 as dispersant; two control groups (one with distilled water and the other with monosulfiram) were also formed; four replicates were performed, with 25 specimens for each dilution, totaling 100 lice per treatment. After the test, the insects were kept at room temperature and observed for mortality rates for 72 h. The biological activity of the product achieved 100% mortality of the insects in the first hour at concentrations of 100 and 50% and in the third hour at concentrations of 25 and 10%. The results demonstrate the possibility of controlling F. subrostratus throught the use of oil extracted from andiroba seeds.
ABSTRACT
With the purpose of verifying the occurrence of insect pests in dog food commercialized in the Metropolitan Region of Recife, samples from 15 different pet stores were submitted to the extraction of insects in a Berlese-Tullgren apparatus. Tribolium castaneum (Herbst) (Tenebrionidae) (55.2 percent) was the most frequent specie followed by Oryzaephilus surinamensis (L.) (Cucujidae) (31.3 percent), Rhyzopertha dominica (Fabricius) (Bostrichidae) (8.9 percent) and Lasioderma serricorne (Fabricius) (Anobiidae) (4.7 percent), all from Coleoptera. Recife showed the highest rate of infestation (53.6 percent), followed by Olinda (34.4 percent) and Jaboatão dos Guararapes (12.0 percent). The infestation by coleopters in the region occurs with high frequency and may represent a threat mainly in commercialized products in bulk.
Objetivando verificar a ocorrência de insetos-praga em alimento industrializado para cães, comercializado na região metropolitana do Recife, amostras de 15 diferentes lojas agropecuárias foram submetidas à extração de insetos em funil de Berlese-Tullgren. Tribolium castaneum (Herbst) (Tenebrionidae) (55,2 por cento) foi o mais freqüente, seguido por Oryzaephilus surinamensis (L.) (Cucujidae) (31,3 por cento), Rhyzopertha dominica (Fabricius) (Bostrichidae) (8,9 por cento) e Lasioderma serricorne (Fabricius) (Anobiidae) (4,7 por cento), todos Coleoptera. Recife apresentou o maior índice de infestação (53,6 por cento), seguido por Olinda (34,4 por cento) e Jaboatão dos Guararapes (12,0 por cento). A infestação por coleópteros ocorre com elevada freqüência na região, podendo representar uma ameaça principalmente nos produtos comercializados a granel.