Geology topics

M. A. Hendrix

Publications and source records attributed to M. A. Hendrix.

2 recordsLinked to original sources

USGS1994

Short-term cold storage of Atlantic sturgeon sperm

Short‐term cold storage of fish sperm with oxygen, an established fisheries technique, was successfully used to preserve milt from Atlantic sturgeon ( Acipenser oxyrhynchus oxyrhynchus ). All milt samples stored for 5 d on ice and replenished daily with oxygen retained at least 80% motility and at least 99% viability. One sample exhibited 40% motility after 17 d. For management personnel involved in restoration of this rare fish, this technique offers an alternative to dependence on the simultaneous capture of ripe males and females from severely depleted stocks. It may also be used during transport prior to fertilization or cryopreservation.

Progressive Fish-Culturist↗

USGS1981

Growth and survival of Atlantic salmon fed various starter diets

Growth and survival were compared for groups of first‐feeding fry of Atlantic salmon (Salmo salar) fed various commercially available and experimental starter diets. In two separate 8‐ to 9‐week studies, survival was highest (more than 90%) in fish fed a semimoist closed‐formula commercial diet (BioDiet). In one study, fish grew fastest on BioDiet, whereas in the second study they grew fastest on a liver‐supplemented diet. Some diets were not eaten by the fish, resulting in little growth and less than 40% survival.

Progressive Fish-Culturist↗