Herbivory affects ovarian development in the zoophytophagous predator <Emphasis Type="Italic">Brontocoris tabidus</Emphasis> (Heteroptera,Pentatomidae) |
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Authors: | W P Lemos J C Zanuncio F S Ramalho V V Zanuncio J E Serrão |
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Institution: | 1.Departamento de Biologia Animal,Universidade Federal de Vi?osa,Vicosa,Brazil;2.Laboratório de Entomologia, Embrapa Amaz?nia Oriental,Belém,Brazil;3.Unidade de Controle Biológico (UCB), Embrapa Algod?o,Campina Grande,Brazil;4.Faculdade de Medicina,Universidade Federal de Juiz de Fora,Juiz de Fora,Brazil;5.Departamento de Biologia Geral,Universidade Federal de Vi?osa,Vicosa,Brazil |
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Abstract: | The effect of prey-based and combination prey and plant-based diets Tenebrio
molitor pupae alone; T. molitor pupae and Eucalyptus cloeziana plants; T. molitor pupae and Eucalyptus urophylla plants; and T. molitor pupae and Psidium guajava (guava) plants] on the morphometry of the ovary of Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) was analyzed in the field. Females fed on T. molitor pupae without plants presented with smaller ovarioles. The number of oocytes per ovary was higher for B. tabidus females fed on a combination diet of E. urophylla and T. molitor pupae when compared to females fed only on prey. In addition to diet, the number of oocytes in the ovariole was shown to
vary with the age of B. tabidus. The 21-day-old B. tabidus females were found to have a higher number of oocytes per ovariole than the 15-day-old females in all diet conditions. The
15-day-old females exhibited more developed oocytes when fed on diets containing both prey and eucalypts plants and less developed
oocytes when fed with a combination diet containing guava plants or T. molitor pupae alone. The 21-one-day-old B. tabidus females which were fed with a diet without plants had smaller oocytes than those fed with plants. Herbivory improves the
morphology of the ovary of B. tabidus, affecting the size of the reproductive structures and the oogenesis of this natural enemy in the field. |
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