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First published online October 18, 2006
Journal of Experimental Biology 209, 4230-4237 (2006)
Published by The Company of Biologists 2006
doi: 10.1242/jeb.02481

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Stickleback sperm saved by salt in ovarian fluid

Helena Elofsson¹, Katrien J. W. Van Look², Kristina Sundell³, Henrik Sundh³ and Bertil Borg^1,*

¹ Department of Zoology, Stockholm University, S-106 91 Stockholm, Sweden
² Institute of Zoology, Zoological Society of London, Regent's Park, London NW1 4RY, UK
³ Fish Endocrinology Laboratory, Department of Zoophysiology, Göteborg University, Medicinaregatan 18, S-41390, Göteborg, Sweden

View larger version (17K): [in a new window]   Fig. 1. (A) Straight line velocity (VSL) of stickleback sperm diluted in different concentrations of ovarian fluid: 0% (black squares), 0.75% (white squares), 1.56% (filled diamonds), 3.125% (filled circles), 6.25% (open circles), 12.5% (downward pointing filled triangles), 25% (downward pointing open triangles), 50% (open diamonds). (B) VSL of stickleback sperm diluted in different concentrations of artificial ovarian fluid (AOV1 3.125% (filled circles), AOV1 6.25% (open circles), AOV1 12.5% (downward pointing filled triangles), AOV1 25% (downward pointing open triangles), AOV2 12.5% (upward pointing filled triangles) AOV2 25% (upward pointing open triangles). For A and B, N=6 for all groups. (C) VSL of stickleback sperm diluted in artificial ovarian fluid (AOV1) 25% (N=6) (downward pointing open triangles), Millipore filtrated water (N=6) (open circles), and mannitol solution (mean, N=12) (downward pointing filled triangles). Values are mean ± s.e.m. For statistics, see Results. Note that the scale of the x-axis is not linear.

View larger version (18K): [in a new window]   Fig. 2. (A) Percentage of motile stickleback sperm, when diluted in different concentrations of ovarian fluid: 0% (black squares), 0.75% (white squares), 1.56% (filled diamonds), 3.125% (filled circles), 6.25% (open circles), 12.5% (downward pointing filled triangles), 25% (downward pointing open triangles), 50% (open diamond). (B) Percentage of motile stickleback sperm diluted in different concentrations of artificial ovarian fluids. AOV1 3.125% (filled circles), AOV1 6.25% (open circles), AOV1 12.5 (downward pointing filled triangles), AOV1 25% (downward pointing open triangles), AOV2 12.5% (upward pointing filled triangles), AOV2 25% (upward pointing open triangles). For A and B, N=6 in all groups. (C) Percentage of motile stickleback sperm diluted in artificial ovarian fluid (AOV1) 25% (N=6) (downward pointing open triangles), Millipore filtrated water (N=6; open circles), and mannitol solution (mean, N=12) (downward pointing filled triangles). Values are means ± s.e.m. For statistics, see Results. Note that the scale of the x-axis is not linear.