The distribution of octopamine has been examined in the solitarious and gregarious forms of the locust, Schistocerca americana gregaria. No evidence was obtained of any phase-related differences in octopamine levels in nervous tissue or muscle. Octopamine values measured for whole heads agreed well with the sums of their component parts. The results are discussed in relation to previous claims of phase-related changes in octopamine levels.
- Locusta migratoria
- nervous tissue
- Schistocerca americana gregaria
- solitarious and gregarious forms