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Ciidae and basidium

Most Ciidae feed basidium. Basidiom have large amounts phosphorous, nitrogen accelerate developtment of  larvae.

Basidium may also contain high concentations of toxin. There is Great selective pressure to develop mechanisms to avoid intoxicataion.

basidium (pl., basidia) is a microscopic, spore-producing structure found on thehymenophore of fruiting bodies of basidiomycete fungi. The presence of basidia is one of the main characteristic features of the Basidiomycota. A basidium usually bears four sexual spores called basidiospores; occasionally the number may be two or even eight. In a typical basidium, each basidiospore is borne at the tip of a narrow prong or horn called a sterigma (pl. sterigmata), and is forcibly discharged upon maturity.

The word basidium literally means little pedestal, from the way in which the basidium supports the spores. However, some biologists suggest that the structure more closely resembles a club. An immature basidium is known as a basidiole.

sterigma (pl. sterigmata) is an extension of the basidium (the spore-bearing cells) consisting of a basal filamentous part and a slender projection with a spore at the tip.[1] They are formed on the basidium as it develops and undergoes meiosis, to result in the production of (typically) four nuclei. The nuclei gradually migrate to the tip of the basidium, and one nucleus will migrate into each spore that develops at the tip of each sterigma:


MARTIN1979;Biochemical implications of insect mycophagy

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