Original paper

Rearing and stocking of coregonids: a comparison of aquaculture practices in Eurasia and North America

Wanzenböck, Josef

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Advances in Limnology Volume 66 (2021), p. 311 - 327

157 references

published: Dec 15, 2021
manuscript accepted: Sep 11, 2018
final revised version received: May 11, 2018
manuscript revision requested: Apr 13, 2018
manuscript received: Nov 12, 2017

DOI: 10.1127/adv_limnol/2021/0073

BibTeX file

ArtNo. ESP143006600020, Price: 29.00 €

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Abstract

The stocking of coregonids began with translocations to water bodies devoid of this group of fishes. The initial motivation was to create additional exploitation opportunities; however, today this is done primarily to create refuge populations. Dedicated brood fish to obtain gametes are typically taken from natural populations or cultured in ponds (sometimes cultured with carp), in net cages, earthen and concrete ponds or tanks. Generally, brood fish attain ripeness under culture conditions without intervention, however, hormonal treatment is occasionally applied. Gametes can be stripped, eggs artificially fertilized, disinfected and incubated in bell jars or Zuger jars. Larvae are commonly reared in ponds, illuminated net cages, or tanks and fed live or formulated feeds. Fingerling production occurs in ponds, net cages, or tanks under various rearing densities and may continue until marketable sizes have been attained. Stocking of natural waters is mostly conducted with larvae, early juveniles, or 
age-0 fingerlings. Various marking methods (e.g., fluorochromes for larvae, microtags, spray marking, or fin clipping for juveniles) allow analyses of stocking effectiveness across different developmental stages released. The comparison of aquaculture practices among continents reveals more similarities than differences and disparities seem to be related primarily to differential socio-economic context and background.

Keywords

whitefish • vendace • bloater • cisco • Coregonus lavaretus • Coregonus clupeaformis • Coregonus albula • Coregonus hoyi • Coregonus artedi • supportive breeding • full-scale production