Longevity and fecundity of the parasitoid fly Exorista larvarum (L.) (Diptera: Tachinidae) at three different temperatures
Ana Maria Ávila Simões, firstname.lastname@example.org, Universidade dos Açores, Dep. de Ciencias Agrarias, Laboratório de Entomologia, P-9701-851 Terra - Chã, Terceira, Açores, Portugal, Simon Grenier, email@example.com, DR INRA UMR INRA/INSA de Lyon, Biologie Fonctionnelle, Insectes et Interactions (BF2I), INSA, Bât. L. Pasteur - 20, av. A. Einstein, Villeurbanne Cedex, France, and Michael Klein, firstname.lastname@example.org, The Ohio State University, USDA-ARS, 1680 Madison Avenue, Wooster, OH.
Longevity and fecundity at different temperatures 15, 20 and 25ºC of the tachinid Exorista larvarum (L.) a polyphagous gregarious larval endoparasitoid of Lepidoptera, were studied upon host species Noctuidae common in the Azores Archipelago. Longevity of female and male was related to its pupa weight. The different periods of before and after oviposition are also studies at three different temperatures. Fecundity was also related with longevity at 15, 20 and 25ºC temperatures. The maximum longevity for female - male of E. larvarum were in days respectively 142 - 77 at 15 ºC, 46 -38 at 20 ºC and 51 - 41 at 25 ºC. The mean male longevity was less than for females for all temperatures, and increased with lower temperatures.
There was no correlation between adult longevity and its pupae weight for all temperatures. The mean duration of before and after oviposition periods were high at decreasing temperature. It was verified the duration periods, in days, for before-oviposition with 17 ± 2, 5 ± 0, and 3 ± 0, oviposition 23 ± 2, 17 ± 1, and 16 ± 0, also after-oviposition 9 ± 5, 6 ± 1, and 5 ± 2 to 15, 20 and 25 ºC, respectively. There was no correlation between longevity and oviposition period and between longevity and fecundity for 15, 20 and 25 ºC. The longevity and oviposition period is bigger when temperature is lower.
Species 1: Diptera Tachinidae Exoristalavarum Keywords: longevity, fecundity