Aspectos de la biologia reproductiva de Linothele megatheloides (Araneae: Dipluridae) (original) (raw)

The Journal of Arachnology, 1993

Abstract

Of 50 specimens ofLinothele megatheloides (Raven) growing under laboratory conditions, only 22 reached a sexually mature state after 10 and 11 ecdyses. The average number of eggs per sac was 161.5; the average egg diameter was 22 mm. The spiders were monitored in the laboratory to determine the inter-instar rate of growth. Eggs held in parafrin and carboxymethyl-cellulose developed only to gastrula. Under laboratory conditions, spiders did not build complete egg sacs, and the eggs were eaten. Several egg sacs were destroyed by fungus and parasitoids. The time of emergence of the spiderlings after oviposition was between 23 and 27 days. The reproduction period occurred between April and October and was apparently related to rain and relative humidity. The spiders have little parental care of the eggs and spiderlings. RESUMEN. De los 50 ejemplares de Linothele megatheloides (Raven), creciendo bajo condiciones de labo? ratorio, solamente 22 llegaron a la madurez sexual, luego de entre 10 y 11 mudas. Las aranas se monitoriaron en el laboratorio para determinar el incremento entre un instar y el proximo. Los huevos incluidos en parafina liquida y en carboximetil celulosa, solamente llegaron a gastrula. Bajo condiciones de laboratorio, las aranas no construyeron la ooteca completa y sus huevos eran normalmente comidos por ella. Varios sacos de huevos fueron parasitados y destruidos por hongos y parasitoides. El tiempo de emergencia de las aranitas luego de ser puesta la ooteca estuvo entre 23 y 27 dias. El periodo de reproduction estuvo entre abril y octubre, situation aparentemente relacionada con el incremento en humedad relativa. Las aranitas no mostraron inversion parental alta con sus huevos y crias.

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