TY - CONF A1 - Hering, Henrik A1 - Matzke, Martina ED - Davies, M. P. ED - Pfeiffer, C. ED - Robinson, W. H. T1 - Parasitoids for classical biological control of Tineola Bisselliella (Lepidoptera: Tineidae) N2 - Two species of parasitoid wasps, Apanteles carpatus (Hymenoptera: Braconidae) and Baryscapus tineivorus (Hymenoptera: Eulophidae), are known to successfully parasitize larvae of tineid moths. We have evaluated each species potential impact on suppressing the pest Tineola bisselliella (Lepidoptera: Tineidae). Both parasitoids have shown high potential for biological control of webbing clothes moth larvae when tested on different host instars in the laboratory and field. Preferences for parasitizing older and larger host larval instars for egg largely overlap in both species. Apanteles carpatus is a solitary koinobiont and parthenogen, while B. tineivorus is a gregarious koinobiont, with a sex ratio of approximately 1:5 (male:female). Solitary reproduction in A. carpatus markedly suppressed the pest population early on but lagged large numbers of progeny in the F(-generation. Gregarious reproduction resulted in a faster build-up of the F1generation but lagged the immediate control effect. Combining the release of both parasitoid species for pest control seemed to be the logical conclusion. We tested the reproductive success of both species when experimentally forced into intensive intraguild competition. For this, parasitoids had either to compete simultaneously or slightly time shifted on the same preferred host resource. Reproductive success of A. carpatus was not significantly influenced by the presence of B. tineivorus. B. tineivorus reproductive output was significantly reduced in the presence of A. carpatus. Overall Suppression of host development was not significantly enhanced with both parasitoid species co-occurring when compared to their exclusive access to hosts. B. tineivorus does not significantly improve the control of webbing clothes moth hosts when occurring together with and having to compete against A. carpatus, at least in restricted laboratory conditions. Results show that B. tineivorus should be released with a temporal advantage of at least several days. For inundative release, reproduction strategies and even competition between parasitoids is negligible, and a deferred release strategy would not be required. T2 - Ninth International Conference on Urban Pests CY - Birmingham, UK DA - 09.07.2017 KW - Intraguild predation KW - Apanteles carpatus KW - Baryscapus tineivorus KW - Biological control KW - Inoculative release PY - 2017 SN - 978-1-5272-0738-7 VL - 9 SP - 335 EP - 345 AN - OPUS4-41017 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Matzke, Martina ED - 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) 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 SN - 0037-5942 VL - 52 SP - 105 EP - 116 AN - OPUS4-39133 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matzke, Martina T1 - Biological characterisation of Baryscapus tineivorus (Hymenoptera: Eulophidae), a larval parasititoid of textile moths (Lepidoptera: Tineidae). T2 - International Conference on IPM in Museums, Archives and Historic Houses CY - Vienna, Austria DA - 2013-06-05 PY - 2013 AN - OPUS4-28724 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -