Sources of Intraspecific Variation in Sperm Precedence in Red Flour Beetles

1990 ◽  
Vol 135 (3) ◽  
pp. 351-359 ◽  
Author(s):  
Sara M. Lewis ◽  
Steven N. Austad
Keyword(s):  
Intraspecific Variation ◽  
Sperm Precedence ◽  
Flour Beetles ◽  
Red Flour Beetles

scholarly journals Sublethal Exposure to Phosphine Decreases Offspring Production in Strongly Phosphine Resistant Female Red Flour Beetles, Tribolium castaneum (Herbst)

PLoS ONE ◽  
2012 ◽  
Vol 7 (12) ◽  
pp. e53356 ◽  
Author(s):  
Andrew W. Ridley ◽  
Seymour Magabe ◽  
David I. Schlipalius ◽  
Michelle A. Rafter ◽  
Patrick J. Collins
Keyword(s):  
Tribolium Castaneum ◽  
Sublethal Exposure ◽  
Offspring Production ◽  
Flour Beetles ◽  
Red Flour Beetles

scholarly journals Postcopulatory, prezygotic isolation: intraspecific and interspecific sperm precedence in Tribolium spp., flour beetles

Heredity ◽  
1994 ◽  
Vol 73 (2) ◽  
pp. 155-159 ◽  
Author(s):  
Theresa Robinson ◽  
Norman A Johnson ◽  
Michael J Wade
Keyword(s):  
Sperm Precedence ◽  
Prezygotic Isolation ◽  
Flour Beetles

EFFECTS OF SUB-LETHAL EXPOSURES TO MALATHION OR CHLORPYRIFOS-METHYL ON OFFSPRING PRODUCTION BY SOME STORED-PRODUCT BEETLES

1990 ◽  
Vol 122 (6) ◽  
pp. 1187-1191 ◽  
Author(s):  
N.D.G. White ◽  
R.N. Sinha
Keyword(s):  
Tribolium Castaneum ◽  
Prolonged Exposure ◽  
Female Survivors ◽  
Offspring Production ◽  
Flour Beetles ◽  
Grain Beetles ◽  
Selection For ◽  
Filter Papers ◽  
Ground Wheat ◽  
Red Flour Beetles

AbstractExposure of adult rusty grain beetles, Cryptolestes ferrugineus (Stephens), saw-toothed grain beetles, Oryzaephilus surinamensis (L.), and red flour beetles, Tribolium castaneum (Herbst), to filter papers treated with the organophosphorus insecticides malathion or chlorpyrifos-methyl often affected offspring production in survivors. Groups of five male and five female survivors were placed on ground wheat at 30°C and C. ferrugineus and O. surinamensis adults produced fewer offspring with prolonged exposure to chlorpyrifos-methyl; malathion had no effect. Tribolium castaneum adults produced significantly more offspring with increasing exposure to both malathion and chlorpyrifos-methyl indicating stimulation of oviposition or a selection for increased fitness in survivors.

scholarly journals Genome size in Tribolium flour-beetles: inter- and intraspecific variation

1991 ◽  
Vol 58 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Asunción Alvarez-Fuster ◽  
Carlos Juan ◽  
Eduard Petitpierre
Keyword(s):  
Genome Size ◽  
Intraspecific Variation ◽  
Related Species ◽  
Alphitobius Diaperinus ◽  
Flour Beetles ◽  
Nuclear Content

SummaryEight species of Tribolium and the related species Alphitobius diaperinus have been microdensitometrically analysed by measuring the nuclear content (1C value) of their Feuigenstained spermatids. The range of mean genome sizes goes from 0·157 pg in T. audax to 0·388 pg in T. brevicornis, including five significantly different groups of values. Also, in ail but one species of Tribolium significant intraspecific heterogeneity of genome size was found. The resemblances in genome size are not generally correlated with genetic homologies among species, but there is a highly significant correlation between genome size and spermatid size.

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