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Digitale Medien

Maternal heterogeneity in primary sex-ratio of three tetranychid mites (1988)

Krainacker, D. A. ; Carey, J. R.

Springer

Experimental and applied acarology 5 (1988), S. 151-162

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Details

ISSN: 1572-9702

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract The influence of maternal age on primary sex ratio was determined forTetranychus urticae, T. pacificus andT. turkestani (Acari:Tetranychidae). All females were allowed to mate once.Tetranychus urticae had the highest production of daughters and the lowest production of sons. The sex ratio ofT. urticae was nearly 2∶1 (daughters∶sons), whereas for the other species it was 0.6∶1. Net sex ratios were all shifted in favor of daughters, suggesting that most son-production occurs late in life. Demographic techniques are applied to tetranychid populations, including the concepts of reproductive concentration curves and expectation of future reproduction based on age and previous offspring.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02053824

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