miércoles, 10 de enero de 2007

Cionus Hortulanus


En un brote de conejito, camara Kodak 6490 con Raynox DCR 250, Flash difusor a 1/500 F8 iso 80

Cionus hortulanus (Geoffroy 1785)
kingdom Animalia/ phylum Arthropoda / class Insecta / order Coleoptera / family Curculionidae
Facil de reconocer por su mancha en forma de circulo de color negro en su espalda. Pense primero que era una cria, por su tamaño, pero no llega a los 8mm, es un adulto. Es uno de los mas pequeños de su subfamilia de gorgojos

One detail:
Females of five species (Anthonomus rectirostris, Cionus hortulanus, Ceutorhynchus napi, C. obstrictus, C. pallidactylus) of the subfamilies Curculioninae and Ceutorhynchinae were noticed consuming their own eggs that were released too early or improperly during ovipositional process. The consumption of own eggs in these rather strict phytophagous insects is probably an adaptative response to either internal or external distortions of the ovipositional sequence resulting in improper egg deposition. It may partially compensate for the loss of deficient nutrients incorporated to these eggs. Own egg consumption can also form a prerequisite for the evolution toward predatory or cannibalistic egg consumption in some weevils.

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