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Intraspecific Competition for Resources by Ormia depleta (Diptera: Tachinidae) Larvae

C. H. Welch
The Florida Entomologist
Vol. 89, No. 4 (Dec., 2006), pp. 497-501
Stable URL: http://www.jstor.org/stable/4140896
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Intraspecific Competition for Resources by Ormia depleta (Diptera: Tachinidae) Larvae
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Abstract

Ormia depleta is a parasitoid of pest mole crickets in the southeastern United States. From 2 to 8 larvae of O. depleta were placed on each of 368 mole cricket hosts and allowed to develop. The weights of the host crickets, number of larvae placed, number of resulting pupae, and the weights of those pupae were all factored to determine optimal parasitoid density per host under laboratory rearing conditions. Based on larval survival and pupal weight, this study indicates that 4-5 larvae per host is optimal for laboratory rearing. /// Ormia depleta es un parasitoide de grillotopos en el sureste de los Estados Unidos. Entre 2 y 8 larvas de O. depleta se colocaron en 368 grillotopos huéspedes y se dejaron madurar. El peso de los huéspedes, el número de larvas de O. depleta colocadas, el número de pupas resultantes y el peso de las pupas fueron usados para determinar la densidad optima de parasitoides en cada huésped para ser usadas en la reproducción de este parasitoide en el laboratorio. Nuestros resultados muestran que entre 4 y 5 larvas por cada grillotopo es la densidad optima para la reproducción en el laboratorio de este parasitoide.

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