In:
Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 85, No. 13 ( 1988-07), p. 4765-4769
Abstract:
Pogonomyrmex rugosus (Hymenoptera: Formicidae) is an important seed predator in the Mojave Desert of the southwestern United States. Its standard rate of O 2 consumption ( ˙Vo 2 ) varied significantly with temperature ( ˙Vo 2 = 10 (-1.588 + 0.0315 T ) , where ˙Vo 2 is ml·g -1 ·hr -1 and T is body temperature in °C). The ratio of the ˙Vo 2 values at 10°C increments in body temperature, Q 10 , also varied with temperature; methods of calculating ˙Vo 2 from temperature with a shifting Q 10 are described. ˙Vo 2 also varied with body mass ( ˙Vo 2 = 0.0462 M 0.669 , where ˙Vo 2 is ml·hr -1 and M is body mass in g). ˙Vo 2 was inversely related to relative humidity and was independent of group size. The rise in ˙Vo 2 at low relative humidities was caused by increased activity and resulted in higher rates of net water loss. The primary metabolic adaptation to xeric conditions in P. rugosus appears to be a lower-than-predicted metabolic rate.
Type of Medium:
Online Resource
ISSN:
0027-8424
,
1091-6490
DOI:
10.1073/pnas.85.13.4765
Language:
English
Publisher:
Proceedings of the National Academy of Sciences
Publication Date:
1988
detail.hit.zdb_id:
209104-5
detail.hit.zdb_id:
1461794-8
SSG:
11
SSG:
12
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