2023年2月1日 · The aim of the study was to quantify grayling female reproduction parameters such as fecundity, egg size and embryo survival to the eyed-egg stage in first time spawners (3 years old) and older grayling reared in the hatchery.

Reproduction of the Grayling These fish breed via spawning. While spawning, the female fish release their eggs, and the males release their sperm or milt, and fertilization occurs outside of the body.

To advance the knowledge of grayling reproduction in the hatchery, husbandry data were systematically collected in the period from 2006 to 2015 during grayling spawning seasons and analyzed to quantify grayling female reproductive parameters such as fecundity, egg size, and embryo survival to the eyed egg stage.

2024年9月1日 · Regarding the reproduction of European grayling under artificial conditions, future work should focus on selective breeding based on phenotype, fertility, and offspring survival. Genetic monitoring using microsatellites and mitochondrial DNA will track changes in the genetic structure of broodstocks over generations.

2024年2月18日 · A grayling fish reproduces by following a set of distinct behavior patterns as well as following well-adapted anatomical principles. Females have their own set of reproductive organs, whereas male greyling fish are heavily reliant on each other for reproduction.

2021年1月1日 · Gonadal steroids concentration did change in European grayling during the examined all reproductive stages. Relative working fecundity of two-year-old females was 15 % higher than three-year-old. In both of experimental age groups, very low levels of embryo survival to the eyed-egg stage were noted.

2019年12月20日 · The analysis of the available data shows the fundamental possibility of introducing a viable European grayling youth to replenish the reproductive nucleus of the natural population, which in turn...

Electrofishing Surveys: Natural reproduction of grayling was documented by electrofishing surveys in each of the past 10 years. We surveyed the Ruby River each autumn following cessation of stocking (2009-2018).

2023年1月17日 · To advance the knowledge of grayling reproduction in the hatchery, husbandry data were systematically collected in the period from 2006 to 2015 during grayling spawning seasons and analysed...

A method known as 'Czech-nymphing' has been known to be helpful to anglers where grayling shoal up in colder periods. The method involves moving a series of Czech nymphs under the tip of the fly rod with the flow of the river and the nymphs should entice the grayling to take one.