Resumo
This paper aims to estimate the flying capacity of the social wasp Polybia occidentalis occidentalis. Ninety six individuals from six different nests were marked and liberated, at pre-determined distances. This species is able to fly as long as 300m from their nests. However, we assumed that 70% return rate as representative of the most effective distance where the wasps realized foraging flights. According to the logistic model, the distance that allows for the 70% of return rate was 126m. It can be estimated that P. occidentalis occidentalis develop its activities more efficiently within a radius of 62m from the nests. This represents a foraging area per colony of approximately. 12.500m2.
Resumo
This paper aims to estimate the flying capacity of the social wasp Polybia occidentalis occidentalis. Ninety six individuals from six different nests were marked and liberated, at pre-determined distances. This species is able to fly as long as 300m from their nests. However, we assumed that 70% return rate as representative of the most effective distance where the wasps realized foraging flights. According to the logistic model, the distance that allows for the 70% of return rate was 126m. It can be estimated that P. occidentalis occidentalis develop its activities more efficiently within a radius of 62m from the nests. This represents a foraging area per colony of approximately. 12.500m2.
Resumo
The selectivity of insecticides carbaryl, trichlorfon, deltametrin, lufenuron the Polybia (Trichotorax) sericea (Olivier, 1791) was going evaluated in dosages that caused up to 84% of death toll between individuals of this species. The insecticide lufenuron was going considered the most selective, trichlorfon showed intermediary selectivity (6% and 48% of death toll, respectively). While deltametrin and carbaril werent going considered selective insecticides (84% and 82%, respectively).
Resumo
The selectivity of insecticides carbaryl, trichlorfon, deltametrin, lufenuron the Polybia (Trichotorax) sericea (Olivier, 1791) was going evaluated in dosages that caused up to 84% of death toll between individuals of this species. The insecticide lufenuron was going considered the most selective, trichlorfon showed intermediary selectivity (6% and 48% of death toll, respectively). While deltametrin and carbaril werent going considered selective insecticides (84% and 82%, respectively).