Algunas consideraciones sobre la biología y etología de diaphania hyalinata (L.) (lepidoptera:pyralidae) en la zona norte de la provincia de las tunas
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Abstract
Diaphania hyalinata (L.) is the key pest of the cucurbitaceous, however, the specifications of their biology and etology are ignored in the north zone of Las Tunas province, where the pumpkin (Cucurbita moschata, Duch.) is a cultivation of economic interest whose yields are affected by the pest. During 3 years the general characteristics of the vital cycle and behaviour were observed to define, under natural conditions, the features more important bioetologics. The morphometrics observations of the vital states were carried out with a microscope stereoscopic with micrometer of lineal scale. The data, processed through the calculation of the intervals of trust of the means, showed differences with those obtained in other regions of the country. The populational levels of the pest, calculated weekly according to the method for their signalling and the means values of the temperatures, relative humidity and precipitations, quantified in the places of the experience, were interpreted statistically by regression and lineal correlation analysis being high significance between the values of the populational distribution and those of the temperatures, while the relative humidity was less significant. The biological cycle of the pirálido lapsed, with means temperatures of 26,5 to 28,1°C and relative humidity of 78,5 to 83% between 28,97 and 33,00 days. The larves began their attacks to the 12-14 days postgermination and they delayed from 10 to 13 days. The larves and pupas were attacked for Nemorilla floralis (Fall) and Conura hirtifemora (Ashmead) respectively.
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