Applied Entomology and Zoology (2004) 39, 363-366

Mai Fukuzawa, Sadahiro Tatsuki and Yukio Ishikawa (2004)
Rearing of Ostrinia palustralis (Lepidoptera: Crambidae) larvae with a switchover of two kinds of artificial diets
Applied Entomology and Zoology 39 (3), 363-366
Abstract: A method was established to rear the entire larval stage of Ostrinia palustralis, an oligophagous species that feeds on dock plants Rumex spp., on artificial diets. Silkmate L4M (an artificial diet for the "polyphagous" silkworm mutants) supplemented with 20% R. japonicus dried leaf powder was initially provided to the neonate larvae, and the diet was switched to Silkmate 2M (a standard diet for silkworms) 14 days post-inoculation. These diets supported larval growth with a pupation rate of about 70%. This rate was comparable to that for conventional rearing using fresh host plant leaves. Although the larval period was significantly extended as compared with the conventional rearing, no difference in the pupal weight was found between the two groups. The number of eggs laid by the resultant adult females and the hatchability of the eggs were also comparable. Utilization of the two kinds of artificial diets enabled rearing of this species throughout the year with much reduced labor.
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Database assignments for author(s): Yukio Ishikawa

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
rearing/culturing/mass production

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rumex crispus (weed)		Japan
	Rumex obtusifolius (weed)		Japan
Ostrinia palustralis (weed bioagent)	Rumex crispus (weed)		Japan
Ostrinia palustralis (weed bioagent)	Rumex obtusifolius (weed)		Japan