Fróðskaparrit - 01.01.1993, Side 77

Fróðskaparrit - 01.01.1993, Side 77
PESTS RECORDED IN THE FAROEISLANDS, 1986-1992 81 Name of animal The Faroe Islands Denmark Frequency of inquiries Common earwig August July Spider beetle August and October July and October Wood-boring beetle (adults) July May-August Book-lice around the year October-November Silverftsh around the year April-August Dark flour beetle around the year September-January Fungus beetles October-April June-October Table 1. Differences between the Faroe lslands and Denmark in the occurrence ofvarious pest species. Talva 1. Tíðin tá skaðadýr verða sædd í Føroyum og í Danmark. Differences between pest fauna in the Faroe Islands and Denmark Some differences between the Faroes and Denmark in the seasonal occurrence of pest fauna are evident (Table 1). Two things are striking: firstly, that some species have their peak season in the Faroes about one month later than in Denmark (earwig, spider beetle, wood-boring beetle); and secondly that other species with a peak season in Denmark have none in the Faroes (book-lice, silverfish, dark flour beetle). The most probable explanation is the small number of records in the Faroes compared with Denmark. Nevertheless, the distribu- tion of records could also change due to the oceanic climate in the Faroes, which results in the later development of the larvae in the summertime, but better survival possibili- ties in the mild winters. Acknowledgments The first author wishes to thank the Danish Pest Infesta- tion Laboratory for encouraging me to treat local pest problems, as well as Arne Nørrevang for assistance and advice in special cases and encouragement in the samp- ling of the material. A special thanks to Kate Sanderson for proofreading and to Marianna Debes Dahl for the Faroese translation of the abstract. References Bengtson, S.A. 1980. Species Assemblages and Co- existence of Faroe Island Ground Beetles (Cole- optera: Carabidae) Entom.Gen. 6(2/4): 251-266. Bengtson, S.A. 1981. Terrestrial Invertebrates of the Faroe Islands: III. Beetles (Coleoptera): Check-list, distribution, and habitats. Fauna Norv. B 28: 52-82. Bengtson, S.A. 1982. Lavere dyr pá land og i ferskvand. Danmarks Natur 12: 123-141. Bloch, D. and Hallas, T. 1988. Mider pá færøsk skærpe- kød. Ent. Meddr. 56(1): 61-62. Buckland, P.C.: 1988. North Atlantic faunal connec- tions - introduction or endemics? Ent. scand. Suppl. 32: 7-29. Buckland, P.C.: 1992. Insects, Man and the earliest settlement of the Faroe Islands: a case not proven. Fróðskaparrit 38-39: 107-114.
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