The Company of Biologists

Table 1.

Summary of the main characteristics and motility responses of seahorse spermatozoa

					Media tested for sperm activation response
Sperm type	% total spermatozoa	Head length^{^*}	Flagellum length^{^*}	% observed motile sperm	Seawater^{^†}	Physiological saline^{^†}	Ovarian fluid^{^†}	Pouch fluid^{^†}
1	66	3.7	49.3	18	+	+	+	+
2	34	13.4	25.1	82	+	+	+	+

					Media tested for sperm activation response
Sperm type	% total spermatozoa	Head length^{^*}	Flagellum length^{^*}	% observed motile sperm	Seawater^{^†}	Physiological saline^{^†}	Ovarian fluid^{^†}	Pouch fluid^{^†}
1	66	3.7	49.3	18	+	+	+	+
2	34	13.4	25.1	82	+	+	+	+

Lengths are expressed as median values. Percentile ranges are presented within the text

Qualitative motility activation response observed after spermatozoa were exposed to treatment fluids