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Desiccation tolerance in Anopheles coluzzii: the effects of spiracle size and cuticular hydrocarbons.

Arcaz AC, Huestis DL, Dao A, Yaro AS, Diallo M, Andersen J, Blomquist GJ, Lehmann T - J. Exp. Biol. (2016)

Bottom Line: A smaller spiracle size appeared to increase A. coluzzii's desiccation tolerance, but was not statistically significant.Seasonal changes in CHC composition were detected in Sahelian A. coluzzii Stepwise regression models suggested the effect of particular CHCs on desiccation tolerance.In conclusion, the combination of particular CHCs along with the total amount of CHCs is a primary mechanism conferring desiccation tolerance in A. coluzzii, while variation in spiracle size might be a secondary mechanism.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Malaria and Vector Research, NIAID, NIH, Rockville, MD 20852, USA.

No MeSH data available.


Related in: MedlinePlus

Effects of spiracle size on DT and RWL under the two treatments. Spiracle size was measured as the length of the mesothoracic and metathoracic spiracles. Regression lines have been added to convey trends although the relationships are not statistically significant (see Results). Ndry=26 and Nwet=28.
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JEB135665F4: Effects of spiracle size on DT and RWL under the two treatments. Spiracle size was measured as the length of the mesothoracic and metathoracic spiracles. Regression lines have been added to convey trends although the relationships are not statistically significant (see Results). Ndry=26 and Nwet=28.

Mentions: Contrary to expectation based on the ratio of surface area to volume, the effects of body size, typically measured by WL and thorax perimeter on DT and on RWL were not significant (P>0.21, F1,51<1.57; Fig. 3). The length, perimeter and area of both the mesothoracic and metathoracic spiracles were positively correlated with WL and thorax perimeter (0.11<r<0.53, not shown), but their effects on survival and RWL were all insignificant (P>0.13, F1,51<2.35, Fig. 4), regardless of whether body size index was included in the models.Fig. 3.


Desiccation tolerance in Anopheles coluzzii: the effects of spiracle size and cuticular hydrocarbons.

Arcaz AC, Huestis DL, Dao A, Yaro AS, Diallo M, Andersen J, Blomquist GJ, Lehmann T - J. Exp. Biol. (2016)

Effects of spiracle size on DT and RWL under the two treatments. Spiracle size was measured as the length of the mesothoracic and metathoracic spiracles. Regression lines have been added to convey trends although the relationships are not statistically significant (see Results). Ndry=26 and Nwet=28.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4920233&req=5

JEB135665F4: Effects of spiracle size on DT and RWL under the two treatments. Spiracle size was measured as the length of the mesothoracic and metathoracic spiracles. Regression lines have been added to convey trends although the relationships are not statistically significant (see Results). Ndry=26 and Nwet=28.
Mentions: Contrary to expectation based on the ratio of surface area to volume, the effects of body size, typically measured by WL and thorax perimeter on DT and on RWL were not significant (P>0.21, F1,51<1.57; Fig. 3). The length, perimeter and area of both the mesothoracic and metathoracic spiracles were positively correlated with WL and thorax perimeter (0.11<r<0.53, not shown), but their effects on survival and RWL were all insignificant (P>0.13, F1,51<2.35, Fig. 4), regardless of whether body size index was included in the models.Fig. 3.

Bottom Line: A smaller spiracle size appeared to increase A. coluzzii's desiccation tolerance, but was not statistically significant.Seasonal changes in CHC composition were detected in Sahelian A. coluzzii Stepwise regression models suggested the effect of particular CHCs on desiccation tolerance.In conclusion, the combination of particular CHCs along with the total amount of CHCs is a primary mechanism conferring desiccation tolerance in A. coluzzii, while variation in spiracle size might be a secondary mechanism.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Malaria and Vector Research, NIAID, NIH, Rockville, MD 20852, USA.

No MeSH data available.


Related in: MedlinePlus