What is it about?
Before freezing, sperm needs to be diluted and incubated in imobilizing and cryoprotecting solutions. Short exposure of sperm to low pH (for example by contamination with urine) may affect the success of cryopreservation. The present works is about this phenomenon in goldfish sperm.
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Why is it important?
Oranmental fish species have low volume of sperm, for this reason it is easy to overdue it when you try to collect sperm from a small fish, and urine can frequently be present in the semen. This will reduce the pH of the semen with negative consequences for the integrity of spermatozoa. Global warming or pollution may also reduce the pH of aquatic ecosysstems with possible negative effect on sperm kinetics. In other words, exposure of semen to low pH may be important for artificual fertilisation and for wildlife.
Perspectives
I feel that I speak for all of the authors when I say that this was a simple paper with important findings. It was great pleasure to write the introduction, during this stage it became obvious that acidic pH has negative effect on the sperm of several species of animals.
Professor Cosmas Nathanailides
University of Ioannna
Read the Original
This page is a summary of: A brief exposure to low pH prior to refrigerated storage reduces the motility and viability of goldfish sperm (Carassius auratus, Linnaeus, 1758), Journal of Applied Ichthyology, May 2015, Wiley,
DOI: 10.1111/jai.12735.
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