Demographic statistics of Dactylopius opuntiae Cockerell (Hemiptera: Dactylopiidae) under greenhouse conditions
In Mexico and other countries, the wild cochineal (Dactylopius opuntiae) is considered the main insect pest of cactus pear (Opuntia spp.) plantations due to severe damage and economic losses. Studies about the biology, behavior and population growth of this species have been carried out in many coun...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA CHAPINGO |
| Repositorio: | Revista Chapingo Serie Zonas Áridas |
| Idioma: | español |
| OAI Identifier: | oai:ojs2.revistas.chapingo.mx:article/673 |
| Acceso en línea: | https://revistas.chapingo.mx/zonas_aridas/article/view/r.rchsza.2018.05.012 |
| Access Level: | acceso abierto |
| Palabra clave: | Nopal plagas tablas de vida y fertilidad Cactus pear insect pests fertility and life tables |
| Sumario: | In Mexico and other countries, the wild cochineal (Dactylopius opuntiae) is considered the main insect pest of cactus pear (Opuntia spp.) plantations due to severe damage and economic losses. Studies about the biology, behavior and population growth of this species have been carried out in many countries; however, in Mexico, research work on these topics are scarce although it is socioeconomically important. The aim of this study was to estimate the survival and reproduction parameters of D. opuntiae under semicontroled conditions. This information can be used to design management tactics for reducing its harmful effects. In order to know the life cycle and population parameter estimates of D. opuntiae, cohorts were set up on individual cladodes of Opuntia ficus-indica (L.) Miller variety Villanueva. Cohorts were carefully monitored from August to December 2017, in order to estimate the life cycle duration. Survival (lx), sex ratio (♀/♂) and fertility of adult females (mx) were also recorded. The net reproduction rate (Ro) based on the number of female newborns per female was 26.09, the life span was calculated in 63.61 days, and the intrinsic rate of population growth (rm) was 0.05 females per day. Based on these results, it was concluded that the reproductive potential of D. opuntiae allows it to colonize the plant rapidly; therefore, the wild cochineal may be an insect pest of economic importance in areas where the genus Opuntia is wild or cultivated |
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