ComparaÇão da efciência de diferentes armadilhas utilizadas para a captura de Dermanyssus gallinae (Acari: Dermanyssidae) (de Geer, 1778)

Abstract

This work aims to compare the performance of corrugated paper and "taquaril" bamboo (Phyllostachys sp.) straw traps for collecting (in sampling) Dermanyssus gallinae in a metal cages battery laying hens. The presence of eggs in the two trap models were compared using a Qui-square test and a proportion confidence interval test. Total daily values of mobile instars gathered in each type of trap were compared using the Wilcoxon's test. The amount of traps containing eggs was not different in neither of the traps (p < 0,05). The number of mobile instars sampled at every two days per trap model was different (p </= 0,01). Counting in the corrugated paper traps showed a Gauss distribution histogram and was superior to the values of the bamboo straw traps.

Mite fauna (Acari) associated to commercial laying hens and bird nests in Vale do Taquari, Rio Grande do Sul, Brazil

“…Four poultry houses were sampled in Teutônia in wooden sheds, being what in two, the birds were kept metal cage battery (Cage) and the other two, the birds were raised free, on wooden pallet with nests and roosts disposition, with feeders tubular and drinkers pendulous and with free access to farm courtyard, where they took the sun, flying, wings beating, running, pecked and revolved along the ground (Free range). In cage system, to make samples were prepared cardboard traps with 100 mm width x 70 mm length x 3 mm height, as suggested by Cunha et al (2009). The cardboard traps were distributed near the superior vertex, sides and in front of the cages selected randomly; in free range system of traps were placed on roosts, nests, columns and walls, following the method used by Lesna et al (2009).…”

In vitro evaluation of the response of Dermanyssus gallinae to products in aqueous suspension

“…Commercial laying hens have been affected by mite infestations in Brazil for a long time (Rezende et al 2013;Faleiro et al 2015;Horn et al 2016). One of the species that threaten the hen population is Dermanyssus gallinae (De Geer, 1778) (Mesostigmata: Dermanyssidae), a hematophagous mite that poses a serious sanitary problem for the laying poultry industry (Cunha et al 2009). Its effects on the production and health of birds places it among the ectoparasites with the greatest economic relevance to egg production worldwide (Chauve 1998).…”

“…They spend the majority of their life cycle away from the host, sucking blood mostly during the night. When they are not feeding, they form colonies in cracks and crevices that are used as hiding places (Cunha et al 2009;Pereira 2011). Adults of this species might survive away from hens without feeding for several months, which explains their persistence in poultry houses (Taylor et al 2007), either because they remain inside the poultry facility nearly throughout their cycle (Tucci et al 2008) or because their control is hampered by their resistance to products (Harrington et al 2011).…”

In Vitro Evaluation of Dermanyssus Gallinae Response to Products in Aqueous Suspension

“…Commercial laying hens have been affected by mite infestations in Brazil for a long time (Rezende et al 2013;Faleiro et al 2015;Horn et al 2016). One of the species that threaten the hen population is Dermanyssus gallinae (De Geer, 1778) (Mesostigmata: Dermanyssidae), a hematophagous mite that poses a serious sanitary problem for the laying poultry industry (Cunha et al 2009). Its effects on the production and health of birds places it among the ectoparasites with the greatest economic relevance to egg production worldwide (Chauve 1998).…”

“…They spend the majority of their life cycle away from the host, sucking blood mostly during the night. When they are not feeding, they form colonies in cracks and crevices that are used as hiding places (Cunha et al 2009;Pereira 2011). Adults of this species might survive away from hens without feeding for several months, which explains their persistence in poultry houses (Taylor et al 2007), either because they remain inside the poultry facility nearly throughout their cycle (Tucci et al 2008) or because their control is hampered by their resistance to products (Harrington et al 2011).…”