Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology
1. 1. Seasonal differences in metabolic and water loss rates were examined in three related species of grasshoppers collected from shrub-steppe communities in Utah: Arphia conspersa, A. pseudonietana and
2. 2 cohorts of Trimerotropis pallidipennis. 2. No significant differences (P = 0.05) in metabolic rates were observed between seasons (early vs late), between genera (Arphia vs Trimerotropis) nor among species.
3. 3. Early season (spring) grasshoppers had a higher (but non-significant) mean water loss rate (±X ± SD in mg.g−1-hr−1) (4.81 ± 1.53) than late season (summer) grasshoppers (4.43 ± 1.43).
4. 4. Among species, early season A. conspersa had a significantly higher water loss rate (5.22 ± 1.76) under similar conditions than late season A. pseudonietana (3.67 ± 1.22), but early season T. pallidipennis had a significantly lower water loss rate (4.40 ± 1.17) than the late season generation (5.32 ± 1.12).
5. 5. Because of variables that were not or could not be controlled, the relationship between these physiological traits and season was difficult to address.
Forlow, L. and MacMahon, J. (1988). Seasonal comparison of metabolic and water loss rates of three species of grasshoppers. Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology, 89(1): 51-60.