Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i>
The noctuid <i>Helicoverpa armigera</i> is an economically important pest of agricultural crops in Iran and other countries. Research is evaluating the capacity of <i>Trichogramma</i> parasitoids to control <i>H</i>. <i>armigera</i> populations on fiel...
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MDPI AG
2021-06-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/12/7/569 |
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| author | Nazanin Atashi Parviz Shishehbor Ali Asghar Seraj Arash Rasekh Seyed Ali Hemmati Eric W. Riddick |
| author_facet | Nazanin Atashi Parviz Shishehbor Ali Asghar Seraj Arash Rasekh Seyed Ali Hemmati Eric W. Riddick |
| author_sort | Nazanin Atashi |
| collection | DOAJ |
| description | The noctuid <i>Helicoverpa armigera</i> is an economically important pest of agricultural crops in Iran and other countries. Research is evaluating the capacity of <i>Trichogramma</i> parasitoids to control <i>H</i>. <i>armigera</i> populations on field crops. The objective of this research was to determine if young rather than old <i>H. armigera</i> eggs were optimal for <i>Trichogramma</i> <i>euproctidis</i> development, reproduction, and life table parameters. Bioassays involved exposing <i>T</i>. <i>euproctidis</i> mated females to <i>H</i>. <i>armigera</i> 14, 38, or 62 h old eggs within 24 h in laboratory arenas. Results indicated that the number of host eggs parasitized successfully by <i>T. euproctidis</i> decreased as host egg age increased. Host egg age had no significant effect on <i>T</i>. <i>euproctidis</i> adult emergence. Adults that developed in 14 h old eggs had greater longevity and fecundity than those that developed in 38 h or 62 h old eggs. The intrinsic rate of increase (<i>r</i>) was greatest, and the mean generation time (T) was lowest for <i>T. euproctidis</i> reared in 14 h old eggs. This study indicates that young <i>H</i>. <i>armigera</i> eggs are more suitable than old ones for <i>T</i>. <i>euproctidis</i> development and reproduction. This study is important because it provides evidence, for the first time, that <i>T. euproctidis</i> can utilize <i>H</i>. <i>armigera</i> as a rearing host. Using young rather than old host eggs could ensure the persistence of a <i>T</i>. <i>euproctidis</i> mass production system to support augmentative releases. |
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| id | doaj.art-1bbdba07ba94489299db8296f9b83e56 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T10:10:24Z |
| publishDate | 2021-06-01 |
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| series | Insects |
| spelling | doaj.art-1bbdba07ba94489299db8296f9b83e562023-11-22T01:10:38ZengMDPI AGInsects2075-44502021-06-0112756910.3390/insects12070569Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i>Nazanin Atashi0Parviz Shishehbor1Ali Asghar Seraj2Arash Rasekh3Seyed Ali Hemmati4Eric W. Riddick5Department of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz 61357-43311, IranDepartment of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz 61357-43311, IranDepartment of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz 61357-43311, IranDepartment of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz 61357-43311, IranDepartment of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz 61357-43311, IranAgricultural Research Service, United States Department of Agriculture, Stoneville, MS 38776, USAThe noctuid <i>Helicoverpa armigera</i> is an economically important pest of agricultural crops in Iran and other countries. Research is evaluating the capacity of <i>Trichogramma</i> parasitoids to control <i>H</i>. <i>armigera</i> populations on field crops. The objective of this research was to determine if young rather than old <i>H. armigera</i> eggs were optimal for <i>Trichogramma</i> <i>euproctidis</i> development, reproduction, and life table parameters. Bioassays involved exposing <i>T</i>. <i>euproctidis</i> mated females to <i>H</i>. <i>armigera</i> 14, 38, or 62 h old eggs within 24 h in laboratory arenas. Results indicated that the number of host eggs parasitized successfully by <i>T. euproctidis</i> decreased as host egg age increased. Host egg age had no significant effect on <i>T</i>. <i>euproctidis</i> adult emergence. Adults that developed in 14 h old eggs had greater longevity and fecundity than those that developed in 38 h or 62 h old eggs. The intrinsic rate of increase (<i>r</i>) was greatest, and the mean generation time (T) was lowest for <i>T. euproctidis</i> reared in 14 h old eggs. This study indicates that young <i>H</i>. <i>armigera</i> eggs are more suitable than old ones for <i>T</i>. <i>euproctidis</i> development and reproduction. This study is important because it provides evidence, for the first time, that <i>T. euproctidis</i> can utilize <i>H</i>. <i>armigera</i> as a rearing host. Using young rather than old host eggs could ensure the persistence of a <i>T</i>. <i>euproctidis</i> mass production system to support augmentative releases.https://www.mdpi.com/2075-4450/12/7/569biological controlendoparasitoidlife tablesnatural enemyreproduction |
| spellingShingle | Nazanin Atashi Parviz Shishehbor Ali Asghar Seraj Arash Rasekh Seyed Ali Hemmati Eric W. Riddick Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i> Insects biological control endoparasitoid life tables natural enemy reproduction |
| title | Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i> |
| title_full | Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i> |
| title_fullStr | Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i> |
| title_full_unstemmed | Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i> |
| title_short | Effects of <i>Helicoverpa armigera</i> Egg Age on Development, Reproduction, and Life Table Parameters of <i>Trichogramma euproctidis</i> |
| title_sort | effects of i helicoverpa armigera i egg age on development reproduction and life table parameters of i trichogramma euproctidis i |
| topic | biological control endoparasitoid life tables natural enemy reproduction |
| url | https://www.mdpi.com/2075-4450/12/7/569 |
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