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Spermatological research of experimentally farmed Patagonian blenny ( Eleginops maclovinus ) (Perciformes: Eleginopsidae) in Chile

2016; Wiley; Volume: 48; Issue: 8 Linguagem: Inglês

10.1111/are.13240

1365-2109

Iván Valdebenito, Jean‐François Cosson, Pablo Contreras, Juan Carlos Sánchez, Ricardo Pinheiro de Souza Oliveira, Jennie Risopatrón, Jorge G. Farías, Elías Figueroa,

Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities

Spermatological research of the Patagonian blennie was carried, specifically biometric parameters, sperm density, sperm count and motility in different activation mediums (815, 716, 590 and 0 mOSm kg−1), at different temperatures (5, 10 and 15°C) and pH levels (5, 7 and 9). The results indicate that Patagonian blennie spermatozoa have a primitive form, with a total length of 44.09 ± 3.36 μm, with a head length of 2.15 ± 0.28 μm and head width of 2.5 ± 0.31 μm. The mid-piece had a length of 0.72 ± 0.12 μm, and its tail measures 41.21 ± 3.21 μm long. The motility pattern indicates that the spermatozoa are found immobile in the seminal plasma and only initiates its movement in a hypertonic medium from 590 to 815 mOsm kg−1. The longest motility time that was registered at 10°C in 716 mOSm kg−1 was of 245 ± 39 s and an optimum pH of 7 was observed.