| interspecific associations between cycloneda sanguinea and two aphid species (aphis gossypii and hyadaphis foeniculi) in sole-crop and fennel-cotton intercropping systems. | aphids cause significant damage to crop plants. studies regarding predator-prey relationships in fennel (foeniculum vulgare mill.) and cotton (gossypium hirsutum l.) crops are important for understanding essential ecological interactions in the context of intercropping and for establishing pest management programs for aphids. this study evaluated the association among hyadaphis foeniculi (passerini) (hemiptera: aphididae), aphis gossypii glover (hemiptera: aphididae) and cycloneda sanguinea (l.) ... | 2015 | 26241862 |
| the biology and thermal requirements of the fennel aphid hyadaphis foeniculi (passerini) (hemiptera: aphididae). | the relationship between the insect development rate and temperature was established very early and represents an important ecological variable for modeling the population dynamics of insects. the accurate determination of thermal constant values and the lower and upper developmental thresholds of hyadaphis foeniculi (passerini) (hemiptera: aphididae) on fennel (foeniculum vulgare miller (apiales: apiaceae)) crops would obviously benefit the effective application of control measures. this paper ... | 2014 | 25003593 |
| assessment of fennel aphids (hemiptera: aphididae) and their predators in fennel intercropped with cotton with colored fibers. | the fennel aphid, hyadaphis foeniculi (passerini) (hemiptera: aphididae) is a major pest of fennel, foeniculum vulgare miller in northeast region of brazil. we hypothesize that intercropping can be used as an alternative pest management strategy to reduce aphid yield loss in fennel. thus, we investigated the severity of fennel plant damage in relation to infestation by the fennel aphid and predation by cycloneda sanguinea (l.) (coleoptera: coccinellidae) (spotless lady beetle), green lacewing, c ... | 2012 | 22420262 |
| temperature-dependent fecundity and life table of the fennel aphid hyadaphis foeniculi (passerini) (hemiptera: aphididae). | hyadaphis foeniculi (passerini) (hemiptera: aphididae) is a cosmopolitan species and the main pest of fennel in northeastern brazil. understanding the relationship between temperature variations and the population growth rates of h. foeniculi is essential to predict the population dynamics of this aphid in the fennel crop. the aim of this study was to measure the effect of constant temperature on the adult prereproductive period and the life table fertility parameters (infinitesimal increase rat ... | 2015 | 25927991 |
| estimating the development of the fennel aphid, hyadaphis foeniculi (passerini) (hemiptera: aphiididae), using non-linear models. | non-linear models making it possible to predict agricultural pest outbreaks and optimise control tactics are of primary importance for integrated pest management. the development period for immature stages of the fennel aphid hyadaphis foeniculi (passerini) (hemiptera: aphididae) at constant temperatures was modelled in order to determine mathematical functions for simulating the aphid's development. non-linear models were used to describe the relationship between temperature and development rat ... | 2015 | 24931051 |