Optimization of fertilization success in Sander vitreus is influenced by the sperm : egg ratio and ova storage
Walleye Sander vitreum eggs could be stored at 7° C for up to 30 h with 60% fertilization rates. Fertilization rates at 1 and 12° C fell to 17 and 5%, respectively. At spermatozoa : egg ratios <25 000 : 1, survival to the eyed stage declined precipitously. Beyond a ratio of 25 000 : 1, survival to the eyed stage did not increase >c. ∼ 70%. Therefore, a standard spermatozoa : egg ratio of 25 000 : 1 was established and is recommended for studies concerning fertilizing success.
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Document Type: Research Article
School of Natural Resources, The Ohio State University, 2021 Coffey Road, Columbus, OH 43210, U.S.A. and
Aquatic Ecology Laboratory, Department of Evolution, Ecology and Organismal Biology, The Ohio State University, 1314 Kinnear Road, Columbus, OH 43212, U.S.A.
Publication date: 2005-10-01