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2012 ; 3
(3
): 629-39
Nephropedia Template TP
gab.com Text
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English Wikipedia
Laboratory Study of the Influence of Substrate Type and Temperature on the
Exploratory Tunneling by Formosan Subterranean Termite
#MMPMID26466619
Gautam BK
; Henderson G
Insects
2012[Jun]; 3
(3
): 629-39
PMID26466619
show ga
Using two-dimensional foraging arenas, laboratory tests were conducted to
investigate the effect of soil type, soil moisture level and ambient temperature
on the exploratory tunneling by Coptotermes formosanus Shiraki. In choice arenas
consisting of two substrate types having two moisture levels each, and conducted
at a constant temperature of 22 °C, a significantly greater proportion of
termites aggregated in sand than in sandy loam. Similarly, the length of
excavated tunnels was also increased in sand. In a given substrate, termite
aggregation or tunnel length did not differ between 5% and 15% moisture levels.
In no-choice tests, where three different substrates (sand, sandy loam and silt
loam) were tested at two temperatures (22 °C and 28 °C), excavations were
significantly greater in sand than either sandy loam or silt loam at 22 °C. Fewer
primary tunnels were constructed in sandy loam than in sand and fewer branched
tunnels than either in sand or silt loam. No significant difference in either
tunnel length or number of primary or branched tunnels was found between these
two temperatures.