A photographic technique for estimating egg density of the white pine weevil, Pissodes strobi (Peck)

Roger T. Zerillo

Treesearch

A photographic technique for estimating egg density of the white pine weevil, Pissodes strobi (Peck)

Informally Refereed

Authors:

Roger T. Zerillo

Year:

1975

Type:

Research Paper

Station:

Northern Research Station

Source:

Res. Pap. NE-318. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.

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Abstract

Compares a photographic technique with visual and dissection techniques for estimating egg density of the white pine weevil, Pissodes strobi (Peck). The relatively high correlations (.67 and .79) between counts from photographs and those obtained by dissection indicate that the non-destructive photographic technique could be a useful tool for determining egg density.

Citation

Zerillo, Roger T. 1975. A photographic technique for estimating egg density of the white pine weevil, Pissodes strobi (Peck). Res. Pap. NE-318. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.