作者: FRANKLIN H. BARNWELL
DOI: 10.2307/1539355
关键词:
摘要: 1. Experimental observations were made on daily and tidal rhythms in four species of fiddler crabs, Uca, collected at Belem Salinopolis near the equator Brazil.2. In naturally changing illumination, overt melanophore activity present U. mordax, rapax, maracoani. The form was related to equatorial cycle daylight darkness.3. There a rhythm thayeri, but its amplitude less than one-third other species. as pugilator, melanophores failed coalesce during diurnal phase dispersion.4. red chromatophores rapax maracoani displayed concentration dispersion.5. constant illumination reduced. least two species, mordax deviated period from 24 hours.6. spontaneous motor possessed which pers...