A koinobiont parasitoid mediates competition and generates additive mortality in healthy host populations

Article Abstract:

The impact of the timing of introduction, and the strength of that introduction, of a parasitoid natural enemy Venturia canescens on the outcome of intraspecific competition between larvae of the Indian meal moth, Plodia interpunctella is investigated. In contrast to healthy hosts alone, reduced survival of healthy larvae is revealed with increasing periods of exposure to greater numbers of parasitised conspecifics.

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Re-evaluating the role of selective abscission in moth/yucca mutualisms

Article Abstract:

The effect of selective abscission in the mutualism between Yucca kanabensis and one of its pollinating moths, Tegeticula altiplanella was examined. It was found that though selective abscission does contribute to producing fruit with more potentially viable seeds and fewer yucca moth larvae, it does not account for a regulating effect on pollinator populations.

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Competition between mutualists: the role of differential flower abscission in yuccas

Article Abstract:

A comparison is presented between yucca and yucca moth species, one which oviposits on the surface of the carpel wall and one which oviposits through the carpel wall. The interrelationships between yucca flower abscission, coexistence of species, seasonal variation and moth behavior are examined.

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