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1 January 2008 Body Weight and Survival of Calosoma sayi (Coleoptera: Carabidae) During Laboratory Feeding Regimes
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Abstract

Laboratory feeding trials were conducted with 40 adult Calosoma sayi DeJean (Coleoptera: Carabidae) over a 19-wk period, by using as food either the larval, prepupal, pupal, or adult stages of the fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). The mean survival period of the beetles maintained on the separate fall armyworm stages was 122 d (larvae), 75 d (prepupae), 57 d (adults), 34 d (pupae), and 31 d (no food). All beetles offered food weighed less at death than at the beginning of the experiment, even though the percentage of gain in body weight during the experiment ranged from 25% (pupae) to 40% (prepupae). Those denied food gained no weight and lost >19% body weight before death. The only significant difference between the sexes was in the percentage of body weight gained (female, 39%; male 26%). These results are compared with other studies and their significance is discussed.

Orrey P. Young "Body Weight and Survival of Calosoma sayi (Coleoptera: Carabidae) During Laboratory Feeding Regimes," Annals of the Entomological Society of America 101(1), 104-112, (1 January 2008). https://doi.org/10.1603/0013-8746(2008)101[104:BWASOC]2.0.CO;2
Received: 31 August 2006; Accepted: 1 September 2007; Published: 1 January 2008
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