ArticleEcology and evolution2026
Development and Genetic Monitoring of a Putatively Thiamine Deficiency Complex Tolerant Atlantic Salmon Broodstock.
Article in Ecology and evolution, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The concept of assisted evolution suggests that hurdles to species restoration in modified environments might be overcome by selective breeding of individuals better-suited to the contemporary evolutionary landscape. Here, we introduce an experimental program aimed at developing an Atlantic salmon broodstock resilient to dietary thiamine deficiency complex (TDC). Dietary TDC is caused by overconsumption of lipid-rich prey items containing thiaminase, leading to insufficient maternal allocation of thiamine to eggs and high offspring mortality. Within Lake Champlain, USA, where TDC is widespread due to consumption of invasive Alewife, we conducted offspring survival trials of 114 wild-reared salmon pairs. We documented among-family patterns in offspring survival to yolk-sac absorption. Some females allocated sufficient free thiamine to eggs to avoid severe offspring mortality from TDC, while most did not and suffered complete or severe reproductive failure. Offspring from "resilient" families with high survival were used as founders of a putatively "TDC-Tolerant" broodstock but at the expense of low effective population size (
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