A technique for sexing fully developed embryos and early-instar larvae of the gypsy moth

Gilbert Levesque

Treesearch

A technique for sexing fully developed embryos and early-instar larvae of the gypsy moth

Informally Refereed

Authors:

Gilbert Levesque

Year:

1963

Type:

Research Note

Station:

Northern Research Station

Source:

Research Note NE-2. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 1-3

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Download (PDF 285 KB): https://research.fs.usda.gov/download/treesearch/11598.pdf

Abstract

Because variation in sex ratio is an important factor in the population dynamics of the gypsy moth (Porthetria dispar), it is necessary to have some means of determining the ratio of males to females in a population at the beginning of the larval period as well as in the later stages. For determining the sex of fully developed embryos and early-instar larvae, a simple whole-mount microscope technique has been devised.

Citation

Levesque, Gilbert. 1963. A technique for sexing fully developed embryos and early-instar larvae of the gypsy moth. Research Note NE-2. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 1-3