TY - JOUR A1 - Matzke, Martina A2 - Sudhaus, Walter T1 - Observations on the biology of the wasp Baryscapus tineivorus (Hymenoptera: Eulophidae), a parasitoid of tineid moths. T1 - Parasitierungsbiologie der Schlupfwespe Baryscapus tineivorus (Hymenoptera: Eulophidae) an Larven der Kleidermotte Tineola bisselliella und Pelzmotte Tinea pellionella (Lepidoptera: Tineidae) T2 - Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin N2 - Observations on the biology of the wasp Baryscapus tineivorus (Hymenoptera: Eulophidae), a parasitoid of tineid moths. Laboratory studies were undertaken to determine the effectiveness of Baryscapus tineivorus, a gregarious parasitoid wasp with high potential to biologically control Tineola bisselliella, the webbing clothes moth and general pest on textiles. It was found that the sex ratio of B. tineivorus is often heavily female-biased (~6 females to one male). Parthenogenetic reproduction occurrs when males develop from unfertilized eggs. Baryscapus tineivorus is oligophagous, parasitising at least another tineid moth, the casemaking clothes moth Tinea pellionella. I investigated how B. tineivorous finds and selects hosts of various larval ages for egg deposition using two different approaches: (1) an acceptance test, for which only one defined larval stage of T. bisselliella or T. pellionella was offered for egg laying; and (2) a choice test, for which different larval stages or different species were offered. In the acceptance tests, B. tineivorus offspring developed within four to seven weeks old webbing clothes moths larvae and within six to seven weeks old casemaking clothes moth larvae. Dual-choice experiments with both tineid host species revealed that B. tineivorus is more attracted to T. bisselliella than to T. pellionella. Because B. tineivorus was reared on T. bisselliella, parasitoid conditioning (learning) could explain the host preference. KW - Textilmotten KW - Materialschutz KW - Biologische Bekämpfung KW - Schlupfwespen PY - 2016 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/39133 AN - OPUS4-39133 SN - 0037-5942 VL - 52 SP - 105 EP - 116 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany