Ciclo biológico daños que causa hábitos e identificación de la escama blanca del banano

Abstract:

In the present research it was studied the biological cycle, the habits associated with the damage and the identification of the white scale of the banana sheaths. It was found that the embrionary period is equal for both male and female (3.9dais). In the female, the nymphal stages lasted 1.8, 10.5 and 13.4 dais for the first, second and third instars, respectively. The mature stage lasted 7.6 dais, and the total lasting of the cycle was 39.3 dais for the female; in the males, the nyphal stages lasted 2.2 and 4.2 dais for the first and second; while the prepupal stage lasted 10.4 dais and the pupal stage 11.5. The total cycle was 27.3 dais and the male longevity was 1.6 dais. This pest is mobile only in the first nymphal stage and it prefers the sheaths of the leaves to feed on; however, it was also found on the leaves, bunch, even as on the rachis as on the hand cows and on the fingers. The males crowd forming dense colonies, white that the females it done also in colonies but they are spread out. In this insect it was observed sexual dimorphism, the female is the typical flattened sale with all the characteristics of the Diaspididae family; the males, on the other hand, have a pair of wings, antennae and a copulatory apparatus very large. The most important morphological characteristics on the females, for the identification were the fallowing: shield almost circular, nearly transparent with sub central exuvias, abundant quantities of males with a large and slender shell, while in colour and with two longitudinal channels on the back, the studies species had a pair of lateral lobules on the prostoma which resembles “cat ears” however, this characteristic had a great variability in its size. The identification of the species corresponded to Diaspis boisduvalii Signoret (Homoptera: Diaspididae).

Año de publicación:

2015

Keywords:

• CICLO BIOLOGICO
• Banano
• Habitos
• ESCAMA BLANCA

Fuente:

rraae