Miscellaneous Images

Meet the Pogos! These images depict Pogo workers at various locations in North America.
Scroll down PAST BOTTOM OF PAGE for complete image description, and CLICK large image to make it even LARGER...
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<span class="captionImageInfo"> ● NW of Mattawa [Grant Co], WA USA [el. 152 m/500 ft]</span> <a href="http://maps.google.com/maps/ms?ie=UTF8&hl=en&t=h&msa=0&msid=100103460138962878270.000470f37e319b015bf28&ll=46.7596,-119.932433&spn=0.329276,0.583649&z=10&source=embed"><span class="mapLink"> view location in Google Maps »</span></a>
<span class="captionImageInfo"> ● 9/4/08 8:11AM sunny, air temp: 21°C / 70°F</span>

<div class="captionImageMain">Another <a href="http://www.davidlouisquinn.com/pogolumina_PsalinusInfo.htm"><span class="glossLinkSm"><em>Pogonomyrmex salinus</em></span></a> worker engaged in self-grooming behavior. Note that in this image the tiny pectinate (comb-like) <em>tibial spurs</em> on the ants' forelegs can be seen (enlarge image to 'x2 Large'). These structures, combined with grooves on the legs themselves form the tibio-tarsal antenna cleaners, through which the antennae are drawn. <span class ="footnoteTag"> [scroll down for additional notes/references]</span></div>
<div class="captionRefFootnote">ADDITIONAL NOTES/REFERENCES:

<em>These grooming actions not only remove fungus and other debris, but may also serve to spread antibiotic secretions over the ant's body. In many ant lineages, much of this bacteria-fighting substance is secreted from the metapleural gland, located on the ant's mesosoma, the 'middle' body part (also called the alitrunk). There is also evidence that some ants posses a gland that is incorporated in the 'antenna cleaner' (strigilis) itself. It is unclear if the secretions from this gland aid solely in the cleaning of the antenna, or serve as a means of chemical communication - perhaps they fulfill both of these roles. As mentioned elsewhere on this site, grooming (and self-grooming) behaviors also distribute the chemical compounds ('cuticular hydrocabons') that allow ants to discriminate between nestmates and intruders, regulate worker tasks, and also permit identification of reproductive status between colony members.

·Fernández-Marín, H., J.K. Zimmerman, S.A. Rehner & W.T. Wcislo. 2006. Active Use of the Metapleural Gland by Ants in Controlling Fungal Infection. Proc. R. Soc. B (2006) 273, 1689–1695 doi:10.1098/rspb.2006.3492 Published online 15 March 2006
·Greene, M.J. & D.M. Gordon. 2007. How Patrollers Set Foraging Direction in Harvester Ants. The American Naturalist, Vol. 170, No. 6, December 2007
·Hölldobler, B. & E.O. Wilson. 1990. The Ants. Cambridge, MA, Belknap/Harvard Press
·Schönitzer, K., H. Dott, R.R. Melzer. 1996. The Antenna Cleaner Gland in Messor rufitarsis (Hymenoptera, Formicidae). Tissue and Cell, 1996 28(1) 107-113, Pearson Professional Ltd.
·Wagner, D.,M. Tissot, W. Cuevas, and D.M. Gordon. 2000. Harvester Ants Utilize Cuticular Hydrocarbons in Nestmate Recognition. Journal of Chemical Ecology, Vol. 26, No. 10, 2000</em></div>

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● NW of Mattawa [Grant Co], WA USA [el. 152 m/500 ft] view location in Google Maps » ● 9/4/08 8:11AM sunny, air temp: 21°C / 70°F

Another Pogonomyrmex salinus worker engaged in self-grooming behavior. Note that in this image the tiny pectinate (comb-like) tibial spurs on the ants' forelegs can be seen (enlarge image to 'x2 Large'). These structures, combined with grooves on the legs themselves form the tibio-tarsal antenna cleaners, through which the antennae are drawn. [scroll down for additional notes/references]

ADDITIONAL NOTES/REFERENCES: These grooming actions not only remove fungus and other debris, but may also serve to spread antibiotic secretions over the ant's body. In many ant lineages, much of this bacteria-fighting substance is secreted from the metapleural gland, located on the ant's mesosoma, the 'middle' body part (also called the alitrunk). There is also evidence that some ants posses a gland that is incorporated in the 'antenna cleaner' (strigilis) itself. It is unclear if the secretions from this gland aid solely in the cleaning of the antenna, or serve as a means of chemical communication - perhaps they fulfill both of these roles. As mentioned elsewhere on this site, grooming (and self-grooming) behaviors also distribute the chemical compounds ('cuticular hydrocabons') that allow ants to discriminate between nestmates and intruders, regulate worker tasks, and also permit identification of reproductive status between colony members. ·Fernández-Marín, H., J.K. Zimmerman, S.A. Rehner & W.T. Wcislo. 2006. Active Use of the Metapleural Gland by Ants in Controlling Fungal Infection. Proc. R. Soc. B (2006) 273, 1689–1695 doi:10.1098/rspb.2006.3492 Published online 15 March 2006 ·Greene, M.J. & D.M. Gordon. 2007. How Patrollers Set Foraging Direction in Harvester Ants. The American Naturalist, Vol. 170, No. 6, December 2007 ·Hölldobler, B. & E.O. Wilson. 1990. The Ants. Cambridge, MA, Belknap/Harvard Press ·Schönitzer, K., H. Dott, R.R. Melzer. 1996. The Antenna Cleaner Gland in Messor rufitarsis (Hymenoptera, Formicidae). Tissue and Cell, 1996 28(1) 107-113, Pearson Professional Ltd. ·Wagner, D.,M. Tissot, W. Cuevas, and D.M. Gordon. 2000. Harvester Ants Utilize Cuticular Hydrocarbons in Nestmate Recognition. Journal of Chemical Ecology, Vol. 26, No. 10, 2000

pogo pogonomyrmex pogonomyrmex salinus ants macro harvester ants pogos