Sentence examples for hatchery production from inspiring English sources

For example, several studies have found widespread negative correlations between natural population productivity and intensity of hatchery production (e.g. Chilcote 2003; Nickelson 2003; Hoekstra et al. 2007).

hatchery production, fry to fingerling rearing and grow-out and product processing for export.

Some conservationists say hatchery production is making Chinook salmon more vulnerable to warming trends.

Environmentalists believe that because some habitat has been forever lost, the salmon population here must always be assisted by hatchery production.

For one thing, hatchery production is making Chinook salmon more vulnerable to warming trends, according to Jacob Katz, director of salmonid restoration initiatives with the group California Trout.

Our results show that extensive culture methods can achieve comparable hatchery production of T. noae to semi-intensive and intensive culture methods, which require additional managerial, infrastructural, and nutritional inputs.

Understanding how hatchery and wild fish might differ in response to fishing and how domestication in hatcheries may degrade fitness of wild fish that interbreed with hatchery fish is critical to the development of sustainable hatchery production-fishing systems for salmon.

Due to the variability of spat recruitment from year to year, and in response to the economic importance of these two bivalve species, there is an increasing interest in developing hatchery spat production.

Lice for the experimental challenge were produced at the Institute of Marine Research in Bergen using a hatchery and production system that has been previously detailed [ 43].

Although the use of hatchery spat production is not yet commonplace, this technology may also provide an option for addressing the irregular spat settlement that has affected natural populations over the last 10 years in European waters.

On the Pacific coast of the United States, commercial oyster hatcheries are experiencing alarming and widespread difficulties keeping Pacific oyster (C. gigas) larvae alive in culture, with two of the largest hatcheries reporting production rates down by as much as 80%.