Humidity Response of Adult Oryzaephilus surinamensis (Coleoptera: Cucujidae) 1

1972 ◽  
Vol 1 (2) ◽  
pp. 221-227 ◽  
Author(s):  
Richard T. Arbogast ◽  
Margaret Carthon
Keyword(s):  
Oryzaephilus Surinamensis ◽  
Humidity Response

Hygroreceptors of adult sawtoothed grain beetles, Oryzaephilus surinamensis (L.) (Coleoptera, Cucujidae)

1972 ◽  
Vol 50 (8) ◽  
pp. 1147-1153 ◽  
Author(s):  
Richard T. Arbogast ◽  
Richard M. Roppel ◽  
Margaret Carthon
Keyword(s):  
Oryzaephilus Surinamensis ◽  
Sense Organs ◽  
Sensilla Basiconica ◽  
Humidity Response ◽  
Grain Beetles

Two types of sense organs are present on the antennae of adult sawtoothed grain beetles, Oryzaephilus surinamensis. Sensilla chaetica are present on all the antennal segments and sensilla basiconica are present on the three segments which compose the antennal club. The intensity of the beetles' humidity response was correlated with the number of sensilla basiconica remaining after amputation of various numbers of antennal segments. On the basis of their morphology and the results of the amputation experiments, it is concluded that at least some of the sensilla basiconica function in hygroreception.

DISTRIBUTION OF THE MERCHANT GRAIN BEETLE, ORYZAEPHILUS MERCATOR (SILVANIDAE: COLEOPTERA) IN CANADA

1970 ◽  
Vol 102 (8) ◽  
pp. 1041-1047 ◽  
Author(s):  
S. R. Loschiavo ◽  
L. B. Smith
Keyword(s):  
National Survey ◽  
Related Species ◽  
Oil Content ◽  
Morphological Characters ◽  
Oryzaephilus Surinamensis ◽  
Stored Grain ◽  
Cereal Products ◽  
Oryzaephilus Mercator

AbstractA national survey shows that the merchant grain beetle, Oryzaephilus mercator Fauvel, has been present in Canada since at least 1925 and that it has become firmly established as a household pest of processed cereal products preferably of high oil content, but has not been reported from stored grain. A related species, the saw-toothed grain beetle, Oryzaephilus surinamensis (L.), infests both stored grain and processed cereal products. Illustrations are provided to show the morphological characters by which the two species may be recognized and separated.

scholarly journals Gas Sensor with Reduced Humidity Response Based on Metal Oxide Nanoparticles Synthesized by Spark Discharge

2018 ◽  
Vol 34 (2) ◽  
pp. 648-654 ◽  
Author(s):  
Alexey Vasiliev ◽  
Andrey Varfolomeev ◽  
Ivan Volkov ◽  
Pavel Arsenov ◽  
Alexey Efimov ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Metal Oxide Nanoparticles ◽  
Spark Discharge ◽  
Oxide Nanoparticles ◽  
Humidity Response

Differentiating the Saw-Toothed Grain Beetle, Oryzaephilus surinamensis (L.), and the Merchant Grain Beetle, O. mercator (Fauv.), by Morphology of the Male Genitalia

1977 ◽  
Vol 60 (5) ◽  
pp. 1223-1226
Author(s):  
Alan R Olsen
Keyword(s):  
Male Genitalia ◽  
Median Lobe ◽  
Oryzaephilus Surinamensis ◽  
Grain Beetles ◽  
Adult Head

Abstract Male saw-toothed grain beetles (Oryzaephilus surinamensis) and merchant grain beetles (O. mercator) were dissected, and the major differences in their genitalia were reviewed. Differences in the morphology of the internal sac, setae of the lateral lobes, chitinous rods of the median lobe, and setae on the eighth sternite are illustrated with photomicrographs. The only other difference between the 2 species is the outline of the adult head. The dissection procedure is described briefly.

Quantitative dietary requirements of Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae) for phenylalanine and tyrosine

1968 ◽  
Vol 46 (3) ◽  
pp. 469-473 ◽  
Author(s):  
G. R. F. Davis
Keyword(s):  
Relative Humidity ◽  
Normal Rate ◽  
Oryzaephilus Surinamensis ◽  
Adult Weight ◽  
Rate Of Development ◽  
Dietary Requirements ◽  
Emergent Adults

Oryzaephilus surinamensis (L.), reared on three holidic diets at 32 ± 2 °C and 75 ± 5% relative humidity, required a dietary source of phenylalanine, irreplaceable by dietary tyrosine. This insect also required a dietary source of tyrosine for normal rate of development. On diets containing 1.0 mg of phenylalanine per gram, it used supplementary glycine more effectively than supplementary tyrosine as a replacement for phenylalanine omitted from the diet. On diets containing 1.0 mg of tyrosine per gram, it used supplementary phenylalanine more effectively than glycine. Emergent adults weighed less with 1.0 mg of dietary phenylalanine per gram than with higher concentrations. Adult weight was unaffected by decreasing concentrations of dietary tyrosine.

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