Egg-hatch phenology and intraguild predation between two mantid species |
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| Authors: | W. E. Snyder L. E. Hurd |
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| Affiliation: | (1) Ecology Program, School of Life Sciences, University of Delaware, 19716 Newark, DE, USA;(2) Department of Entomology and Applied Ecology, University of Delaware, 19716 Newark, DE, USA;(3) Present address: Department of Entomology, University of Kentucky, S-225 Agricultural Science Bldg-North, 40546-0091 Lexington, KY, USA;(4) Present address: Department of Biology, Washington & Lee University, 24450 Lexington, VA, USA |
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| Abstract: | Relative timing of egg hatch between two cooccurring, congeneric mantids, Tenodera angustipennis and T. sinensis, was experimentally manipulated in replicated field enclosures to test the importance of intraguild predation to survivorship and development of T. angustipennis. T. angustipennis is normally smaller than its congener because of later egg-hatch. Delaying introduction of T. sinensis relative to normal egg hatch phenology reduced mortality for T. angustipennis, but did not affect its rate of development. The results indicate that intraguild predation by normally earlierhatching T. sinensis can be an important factor in the early life history of T. angustipennis, but that interspecific competition is not a strong selective factor in developmental asynchrony between these two species. |
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| Keywords: | Intraguild predation Mantids Hatch phenology Interspecific competition Developmental asynchrony |
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