New publication: Potential of bioinspired artificial vaginas to improve semen quality in dolphins
Dear MARMAM community, On behalf of my coauthors, we are pleased to announce the publication of our new article entitled "Potential of bioinspired artificial vaginas to improve semen quality in dolphins" The article is open access using the following link: https://doi.org/10.3390/jmse13071376 Rich, J., Sánchez-Contreras, G.G., Cowart, J.R., Orbach, D.N. 2025. *Journal of Marine Science and Engineering 13(7):*1376 doi:10.3390/jmse13071376 Abstract: Semen collection is an important component of conservation and animal husbandry. Semen quality is generally improved using voluntary collection methods, particularly artificial vaginas (AVs). Most commercially available AVs are tube-shaped with few species-specific design augmentations. As genitalia are highly variable across taxa, incorporating species-specific genital morphologies into AV designs may enhance collected semen quality. We compared dolphin semen quality using: (1) silicone bioinspired artificial vaginas (BAVs) that reflect the internal shape of dolphin vaginas, and (2) manual stimulation. Sperm motility and kinematic parameters of five bottlenose dolphins (Tursiops sp.) were assessed using computer-aided sperm analysis (CASA). Sperm collected using BAVs showed non-significant increases in median progressive and rapid motility, and increases in median and mean linear motility, supporting a sexual selection functional hypothesis for the biodiverse vaginal folds unique to whales, dolphins, and porpoises. Sperm concentration decreased with BAV collection, while no consistent trends were detected in volume, pH, velocity, or plasma membrane integrity. Modifications to AVs for other species that incorporate genital morphologies may also optimize collected semen quality for application to artificial insemination. Best wishes, Dara Orbach, PhD Department of Life Sciences, Texas A&M University- Corpus Christi
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Dara Orbach