Incidencia natural de parasitoides de huevos de Oebalus insularis Stal (Heteroptera: Pentatomidae) en Panamá

Abstract

RESUMENEl objetivo del trabajo fue el de determinar la tasa de parasitismo en huevos de Oebalus insularis en diferentes variedades (CONAGRO-2, ESTRELLA-92, IDIAP-5405) de arroz. La tasa de parasitismo de los huevos de O. insularis se determinó en condiciones controladas de temperatura (25±1 °C), humedad relativa (85±3%) y fotofase (12 horas). Se identificaron los parasitoides Telenomus podisi y Trissolcus basalis. La tasa de parasitismo promedio del complejo de parasitoides fue superior al 90% y la especie más abundante fue T. podisi, con 81,8% de parasitismo.Palabras clave: Control biológico, Oebalus insularis, Telenomus podisi, Trissolcus basalis, Oryza sativa. ABSTRACT The objective of this work was to determine the parasitism rate of Oebalus insularis eggs, in different rice varieties (CONAGRO-2, ESTRELLA-92, IDIAP-5405). The parasitism rate of O. insularis eggs was determinated under controlled conditions of temperature (25±1 °C), relative humidity (85±3%) and photophase (12 hours). The parasitoids

Natural Parasitism of Oebalus InsularisStal (Heteroptera: Pentatomidae) Eggs in Host Weeds Associated With Rice Cultivation in Panama

“…Therefore, the parasitism rate of eggs is directly related to the nutritional quality of the host plant species [13]. This explains the high rates [13]. The new biotic associations reported in the present study suggest a rethinking of integrated pest management programs in rice cultivation.…”

“…The relation between the reproductive capacity of O. insularis and the secondary metabolites of host plants may also influence the average number of eggs recorded for each weed species. Therefore, the parasitism rate of eggs is directly related to the nutritional quality of the host plant species [13]. This explains the high rates [13].…”

“…Biological studies under controlled abiotic conditions confirmed the efficient biological and reproductive performance of O. insulariswhenE. colonawas the food source [13]. Feeding and breeding Oebalus species depends, among other factors, on the phenology of the host plants, which is related to the nutrient concentration [12].…”

“…podisi and Tr. basalis, which are considered key mortality factors of O. insularis [13] and are found in the host weed complex near the rice crop, reduce the pest population [13].…”

Quantitative and qualitative damage caused by Oebalus poecilus (Hemiptera, Pentatomidae) to upland rice cultivated in new agricultural frontier of the Amazon rainforest (Brazil)

“…Besides this information, the producer must consider several other factors already reported in the studies of Barrigossi (2008), Tindall, Stout and Williams (2004) and Tindall et al (2005) aimed at integrated pest management, in addition to the use of alternative controls such as the use of phyto-insecticides and release of natural enemies (Favetti et al, 2013;Massaroli, 2014;Machado, 2014;Piton et al, 2014;Zachrisson;Costa;Bernal, 2014;Zachrisson et al, 2014;Turchen et al, 2016ab;Foerster, 2016;Martins;Sanini et al, 2017).…”