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The efficacy of benzyl benzoate sprays in killing the storage mite Tyrophagus putrescentiae [Acari: Acaridae]

100%

Harju A. T. K., Pennanen S. M. A., Liesivuori J.

Annals of Agricultural and Environmental Medicine

2004

tom 11

nr 1

This study tested the effectiveness of benzyl benzoate (BB) in killing Tyrophagus putrescentiae (Schrank) mites when using the method utilized by regular consumers. The efficacy of the BB sprays was determined in laboratory experiments and semi-field experiments with mattress and mattress pad pieces. The mites were counted and their living status determined at different time points microscopically. In the laboratory experiment, the sprays containing either 0.5%/0.9% BB with 70% ethanol or 0.1% BB with absolute ethanol were highly efficient, resulting in over 90% mite mortality within 20-30 minutes. In the semi-field experiment, mimicking the home application, the sprays were applied to pieces of a mattress and a mattress pad, and allowed to affect the area for 30 minutes before thorough vacuuming. The recovery of mites was usually less than 10%. The sprays containing BB were effective in killing the mites in the laboratory, but success was less prominent in the semi-field tests. This method could be used in testing other compounds for their efficacy in killing mites.

“Reversed” intraguild predation: red fox cubs killed by pine marten

84%

Brzezinski M., Rodak L., Zalewski A.

Acta Theriologica

2014

tom 59

nr 3

Camera traps deployed at a badger Meles meles set in mixed pine forest in north-eastern Poland recorded interspecific killing of red fox Vulpes vulpes cubs by pine marten Martes martes. The vixen and her cubs settled in the set at the beginning of May 2013, and it was abandoned by the badgers shortly afterwards. Five fox cubs were recorded playing in front of the den each night. Ten days after the first recording of the foxes, a pine marten was filmed at the set; it arrived in the morning, made a reconnaissance and returned at night when the vixen was away from the set. The pine marten entered the den several times and killed at least two fox cubs. It was active at the set for about 2 h. This observation proves that red foxes are not completely safe from predation by smaller carnivores, even those considered to be subordinate species in interspecific competition.

Ograniczanie wyników

1 Acta Theriologica

1 Annals of Agricultural and Environmental Medicine

1 Brzezinski M.

1 Harju A. T. K.

1 Liesivuori J.

1 Pennanen S. M. A.

1 Rodak L.

1 Zalewski A.

1 2014

1 2004

Wyniki wyszukiwania

The efficacy of benzyl benzoate sprays in killing the storage mite Tyrophagus putrescentiae [Acari: Acaridae]

“Reversed” intraguild predation: red fox cubs killed by pine marten