Table 1: Differences in four behavior types for male brevis within and among habitats.

Habitats
Sand-bottom habitatsRocky habitats
Shell bedSeparated shellAggregationShell patch

Females(N = 7)(N = 3)(N = 14)
 Time spent in shell (min)
 Number of feeding pecks
 Number of intraspecific attacks
 Number of heterospecific attacks

Males(N = 12)(N = 19)(N = 23)(N = 22)(N = 23)
 Time spent in shell (min)
 Number of feeding pecks 57.2 ±
 Number of intraspecific attacks
 Number of heterospecific attacks

Values are means ± SD.
Different letters beside the value indicate statistical significances determined using the Bonferroni correction.
Males floating above shell patches.
Males found in shell of shell patches.