Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)

The objective of this study was to establish a high quality progeny production system for the house fly parasitoid, Spalangia endius (Hymenoptera: Pteromalidae), by stockpiling hosts. We performed two host killing methods before host storage: (i) heat-killed by 30 min exposure to 50°C or (ii) freeze...

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Main Authors: Kohei Ogawa, Katsura Ito, Tatsuya Fukuda, Shin-ichi Tebayashi, Ryo Arakawa
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1100/2012/214907
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author Kohei Ogawa
Katsura Ito
Tatsuya Fukuda
Shin-ichi Tebayashi
Ryo Arakawa
author_facet Kohei Ogawa
Katsura Ito
Tatsuya Fukuda
Shin-ichi Tebayashi
Ryo Arakawa
author_sort Kohei Ogawa
collection DOAJ
description The objective of this study was to establish a high quality progeny production system for the house fly parasitoid, Spalangia endius (Hymenoptera: Pteromalidae), by stockpiling hosts. We performed two host killing methods before host storage: (i) heat-killed by 30 min exposure to 50°C or (ii) freeze-killed by 10 min exposure to −80°C. The average number of parasitoids that emerged from nonstored house fly pupae after heat- or freeze-killing was not significantly different from live pupae. When house fly pupae stored at −20°C after heat-killing were supplied to S. endius, progeny production was significantly less than live pupae. Moreover, productivity became very low when house fly pupae refrigerated at 3°C after heat- or freeze-killing were supplied to S. endius. On the other hand, when house fly pupae stored at −80°C for 1 year after heat-killing were supplied to S. endius, the average number of parasitoids that emerged was not significantly different from live pupae. The average number of parasitoids that emerged from freeze-killed hosts kept for more than 8 weeks at −80°C was significantly fewer than live pupae. Thus, this study clarified that a higher-quality host can be maintained not only by simply storing at –80°C but also by adding heat treatment before storage.
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institution Kabale University
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publishDate 2012-01-01
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series The Scientific World Journal
spelling doaj-art-1c8d16d217bf471e8894beca602ad82d2025-08-20T03:54:37ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/214907214907Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)Kohei Ogawa0Katsura Ito1Tatsuya Fukuda2Shin-ichi Tebayashi3Ryo Arakawa4Faculty of Agriculture, Kochi University, 200 Monobe-otsu, Nankoku, Kochi 783-8502, JapanFaculty of Agriculture, Kochi University, 200 Monobe-otsu, Nankoku, Kochi 783-8502, JapanFaculty of Agriculture, Kochi University, 200 Monobe-otsu, Nankoku, Kochi 783-8502, JapanFaculty of Agriculture, Kochi University, 200 Monobe-otsu, Nankoku, Kochi 783-8502, JapanFaculty of Agriculture, Kochi University, 200 Monobe-otsu, Nankoku, Kochi 783-8502, JapanThe objective of this study was to establish a high quality progeny production system for the house fly parasitoid, Spalangia endius (Hymenoptera: Pteromalidae), by stockpiling hosts. We performed two host killing methods before host storage: (i) heat-killed by 30 min exposure to 50°C or (ii) freeze-killed by 10 min exposure to −80°C. The average number of parasitoids that emerged from nonstored house fly pupae after heat- or freeze-killing was not significantly different from live pupae. When house fly pupae stored at −20°C after heat-killing were supplied to S. endius, progeny production was significantly less than live pupae. Moreover, productivity became very low when house fly pupae refrigerated at 3°C after heat- or freeze-killing were supplied to S. endius. On the other hand, when house fly pupae stored at −80°C for 1 year after heat-killing were supplied to S. endius, the average number of parasitoids that emerged was not significantly different from live pupae. The average number of parasitoids that emerged from freeze-killed hosts kept for more than 8 weeks at −80°C was significantly fewer than live pupae. Thus, this study clarified that a higher-quality host can be maintained not only by simply storing at –80°C but also by adding heat treatment before storage.http://dx.doi.org/10.1100/2012/214907
spellingShingle Kohei Ogawa
Katsura Ito
Tatsuya Fukuda
Shin-ichi Tebayashi
Ryo Arakawa
Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)
The Scientific World Journal
title Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)
title_full Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)
title_fullStr Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)
title_full_unstemmed Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)
title_short Host Suitability of House Fly, Musca domestica (Diptera: Muscidae), Pupae Killed by High or Low Temperature Treatment for a Parastoid, Spalangia endius (Hymenoptera: Pteromalidae)
title_sort host suitability of house fly musca domestica diptera muscidae pupae killed by high or low temperature treatment for a parastoid spalangia endius hymenoptera pteromalidae
url http://dx.doi.org/10.1100/2012/214907
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