Prediction of Walleye Egg and Embryo Survival at Two Stages of Development

Heidinger, Roy C.; Brooks, Ronald C.; Leitner, Dennis W.; Soderstrom, Irina R.

doi:10.1577/1548-8640(1997)059<0064:poweae>2.3.co;2

Cited by 11 publications

(5 citation statements)

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“…The implications are that either the most limiting ova constituents were not examined in this study, or that the composition of the ova is not critical to embryonic survival to hatch, as long as minimum thresholds of nutrients are provided. Most walleye embryo mortality occurs early in incubation (Heidinger et al 1997;Latif et al 1999) suggesting that the problems arise before any particular nutritional component becomes limiting. Thyroid hormones have been linked to both embryonic (Johnston et al 2005) and posthatch (Hey et al 1996) survival in walleye.…”

Section: Discussionmentioning

confidence: 99%

“…Research on other fish species has indicated that mortality early in the embryonic period is not related to mortality later in development (Keckeis et al 2000). Most walleye embryo mortality occurs early in incubation (Heidinger et al 1997;Latif et al 1999) suggesting that the problems arise before any particular nutritional component becomes limiting.…”

Section: Discussionmentioning

confidence: 99%

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Hatching success of walleye embryos in relation to maternal and ova characteristics

Johnston

Wiegand

Leggett

et al. 2007

Ecology of Freshwater Fish

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– Understanding how maternal and ova traits influence offspring quality is a key issue in both ecological research and fish culture. We examined the survival and size at hatch of walleye embryos in relation to a suite of maternal and ova traits in laboratory incubation trials involving two native walleye populations. Ova were analysed for size, lipid content, fatty acid composition, soluble protein content and size composition, and mineral (Ca, Co, Cu, Fe, Mg, Mn and Zn) content. Embryonic survival (egg hatching success) varied most consistently with respect to spawning date and maternal age. Embryonic survival increased with maternal age, but other indices of maternal health, such as condition (residual mass at length) or somatic lipid content, did not account for significant amounts of variation. Indices of ova total lipid content, fatty acid composition and mineral composition explained significant variation in embryonic survival not accounted for by maternal age and spawning date, whereas indices of protein content and composition generally explained less variance. Both larval mass and length at hatch were primarily determined by ovum size, but length at hatch was also related to some aspects of ova fatty acid and mineral composition.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Hatching success of walleye embryos in relation to maternal and ova characteristics

Johnston

Wiegand

Leggett

et al. 2007

Ecology of Freshwater Fish

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“…Eggs collected in 2009 and 2010 were cleared by using Stockard's solution via the method of Galat (1972) to allow for observation of embryos. Embryos were examined under a phase-contrast microscope with variable magnification, and the egg developmental stage was determined (Heidinger et al 1997). Developmental stages were grouped into four categories: deceased, stage 1, stage 2, or stage 3.…”

Section: Methodsmentioning

confidence: 99%

“…Developmental stages were grouped into four categories: deceased, stage 1, stage 2, or stage 3. Stage-1 eggs were pre-organogenesis and had not acquired 28 temperature units; stage-3 eggs were just about to hatch, exhibiting well-developed eyes, caudal mesenchyme, and pectoral fin buds, and had acquired at least 97 temperature units; and stage-2 eggs were intermediate between stages 1 and 3 (Heidinger et al 1997).…”

Section: Methodsmentioning

confidence: 99%

Density and Survival of Walleye Eggs and Larvae in a Great Lakes Tributary

et al. 2016

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The Walleye Sander vitreus is an important sport fish that has experienced low reproductive success in some Great Lakes tributaries since severe population declines began in the late 1940s. In the Muskegon River, a Lake Michigan tributary, natural reproduction of Walleyes remains low and is largely supplemented by stocking. We evaluated the influence of abiotic factors on Walleye reproductive success in the Muskegon River during April and May 2009 and 2010 by (1) estimating Walleye egg density and survival; (2) estimating the size, density, abundance, and survival of Walleye larvae; and (3) relating our estimates to physical habitat conditions. Egg densities were 70‐fold higher in 2009 than in 2010, but eggs experienced colder water temperatures, higher river discharge rates, and lower survival in 2009 relative to 2010. Egg survival in incubators was positively related to temperature and negatively related to flow at most sites. In both years, Walleye larvae that hatched during periods of cooler temperature were smaller than larvae that hatched later during periods of warmer temperature. Walleye larval densities were highest near spawning grounds and decreased downstream. Bayesian estimates of variability in larval densities indicated that temporal variability was twice as high as spatial variability in the Muskegon River. Larval survival was much lower in 2009 than in 2010, resulting in an approximately sevenfold higher production of larvae in 2010 than in 2009. Survival was highest for smaller larvae that hatched early in April 2010, when temperatures were warm and discharges were low and stable; in contrast, survival was much lower for larger larvae hatching later in 2010 or for large and small larvae in 2009, when water temperatures were colder and discharges were higher and more variable. Our results suggest that abiotic factors, primarily temperature and river flow, likely control the early survival of Walleyes in the Muskegon River. Received February 9, 2015; accepted January 11, 2016 Published online April 19, 2016

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“…Values in parentheses are ± s. d. of the mean. Laboratory studies indicate that most egg mortality occurs early in walleye egg development (Latif et al, 1999;Heidinger et al, 1997). Latif et al (1999) found 80% of all egg mortality occurred between 50 and 100 h after fertilization when eggs were incubated at 10°C.…”

Section: Temperature Effectsmentioning

confidence: 99%