Maternal and stock effects on egg-size variation among walleye Sander vitreus stocks from the Great Lakes region

Wang, Hui‐Yu; Einhouse, Donald W.; Fielder, David G.; Rudstam, Lars G.; Vandergoot, Christopher S.; VanDeValk, Anthony J.; Zorn, Troy G.; Höök, Tomas O.

doi:10.1016/j.jglr.2012.06.002

Cited by 26 publications

(32 citation statements)

References 68 publications

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“…This was contrary to the results of past studies, which found a weak positive relationship between Walleye egg diameter and female length (Wang et al. ; Feiner et al. ).…”

Section: Discussioncontrasting

confidence: 99%

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The Effect of Sediment Cover and Female Characteristics on the Hatching Success of Walleye

Gatch

Koenigbauer

Roseman

et al. 2020

N American J Fish Manag

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Natural and anthropogenic sources of sedimentation have the potential to degrade spawning habitat and negatively affect incubating fish embryos. Walleye Sander vitreus are lithophilic broadcast spawners that use specific spawning habitats that are vulnerable to degradation caused by deposition of suspended sediments. We measured the effect of different types of sediment cover on hatching success of Walleye eggs and assessed whether differences in female Walleye (female length and mean egg size) account for tolerance to sediment cover. Experiments were carried out in 2018 to test the effect of sediment cover on hatching success and in 2019 to test how female identity and female length or mean egg size may interact with sediment cover to influence hatching success. Eggs in both experiments were exposed to instantaneous sediment cover (0–7 mm) of either sand or silt from fertilization until day 15 of incubation. Results indicated that Walleye eggs were sensitive to silt cover (71% mortality with 2 mm of silt cover) but not sand cover (47% mortality with 7 mm of sand cover). Hatching success differed significantly among individual females. Although there was an indication that hatching success was marginally negatively related to female length and positively related to mean egg size, sediment cover seemed to have similar effects on eggs, regardless of female length or egg size. Susceptibility of Walleye eggs to mortality caused by sediment cover further underscores the need to limit large‐scale sediment loading and resuspension in aquatic systems.

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“…This was contrary to the results of past studies, which found a weak positive relationship between Walleye egg diameter and female length (Wang et al. ; Feiner et al. ).…”

Section: Discussioncontrasting

confidence: 99%

“…Using ImageJ software, two perpendicular diameters of each egg were measured (Wang et al. ; Feiner et al. ).…”

Section: Methodsmentioning

confidence: 99%

The Effect of Sediment Cover and Female Characteristics on the Hatching Success of Walleye

Gatch

Koenigbauer

Roseman

et al. 2020

N American J Fish Manag

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“…Life-history trade-off s are complex and oft en manifested through indirect pathways. As an example, reduced reproductive investment is not always manifested in reduced fecundity, as there are inherent trade-off s in the size and number of off spring that ultimately shape investment (fi sh : Hutchings 1991;Johnston and Leggett 2002;Wang et al 2012;turtles: Rowe 1994;amphipods: Glazier 1999). Th ere are likely many indirect trade-off s that occur in walleye life-history expression, thus we believed it important to study multiple reproductive traits to improve our understanding of these trade-off s. It seems unlikely that females at Medicine Creek are masking alternative trade-off s in life-history expression, as length-corrected mass regularly predicts reproductive investment in other fi sh species (Carlander 1969(Carlander , 1977(Carlander , 1997.…”

Section: Resultsmentioning

confidence: 99%

“…Life-history theory predicts (Roff 1992;Stearns 1992) and empirical evidence has shown in fi sh (Hutchings 1991;Johnston and Leggett 2002;Wang et al 2012), turtles (Rowe 1994), and amphipods (Glazier 1999) that when individuals inhabit and reservoir. We indexed reproductive investment as fecundity, egg size, and gonad weight, all of which we modeled independently as a function of somatic weight (random) and reservoir.…”

Section: Discussionmentioning

confidence: 99%

Masked Expression of Life-History Traits in a Highly Variable Environment

DeBoer¹,

Fontaine²,

Chizinski³

et al. 2015

gpr

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Differing life-history strategies may act as a constraint on reproductive expression that ultimately limits the ability of individual species to respond to changes in the magnitude or frequency of environmental variation, and potentially underlies the variation often inherent in phenotypic and evolved responses to anthropogenic change. Alternatively, if there are environmental cues that predict reproductive potential, differential expression of life-history strategies may represent differences in the adaptive capacity to optimize current reproductive value given variation in environmental conditions. We compared several aspects of walleye Sander vitreus spawning ecology at two reservoirs that differ in environmental variability (i.e., annual water-level fluctuation) to identify the capacity of phenotypic expression and the corresponding association with age. Despite significant differences in female body and liver masses between reservoirs that differ in environmental variability, we found no difference in reproductive investment measured by egg size and fecundity. Walleye in a highly variable environment appear to exhibit reproductive traits more typical of a short-lived life-history strategy, which may be resultant from the interaction of environmental and anthropogenic pressures. This finding emphasizes the need to identify the degree to which life-history expression represents physiological constraints versus ecological optimization, particularly as anthropogenic change continues to alter environmental conditions.

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“…Both maternal phenotypes and environmental conditions are important determinants for intra‐specific variation in egg size or fecundity of fish. For example, increasing female size or age often leads to increased egg size and fecundity (Hixon, Johnson, & Sogard, ; Rollinson & Rowe, ; Wang et al, ). Such maternal effects on egg traits indicate phenotypic plasticity (Messina & Fox, ).…”

Section: Introductionmentioning

confidence: 99%

Changes in reproduction for subtropical cutlassfish Trichiurus japonicus reflect variation in temperature and population demography

2020

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Many subtropical fishes spawn multiple batches throughout a year. To understand plasticity in their reproductive output, we evaluated variation in oocyte size and batch fecundity for an exploited subtropical cutlassfish, Trichiurus japonicus, between two temperature periods (warm vs. cold) on the NE and SW coasts of Taiwan, northwestern Pacific. Given greater temperature variability on NE compared with SW coast, we hypothesized greater changes between warm and cold periods in oocyte size and fecundity for T. japonicus on the NE coast. We found opposite changes in sizes of ripe oocytes between periods (cold > warm on the NE but warm > cold on the SW coast) but consistent patterns in batch fecundity between coasts (warm > cold). Furthermore, the between‐period patterns in female length were consistent on both coasts (warm > cold). The differential between‐period patterns in oocyte size were related to potential adaptive responses to differential thermal environments between coasts, whereas the changes in fecundity mainly involved plastic processes (e.g., changes in population demography or movement). Together, our findings suggest that variability of temperature and maternal effects underlie recruitment variability of T. japonicus.

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Maternal and stock effects on egg-size variation among walleye Sander vitreus stocks from the Great Lakes region

Cited by 26 publications

References 68 publications

The Effect of Sediment Cover and Female Characteristics on the Hatching Success of Walleye

The Effect of Sediment Cover and Female Characteristics on the Hatching Success of Walleye

Masked Expression of Life-History Traits in a Highly Variable Environment

Changes in reproduction for subtropical cutlassfish Trichiurus japonicus reflect variation in temperature and population demography

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