Quantifying inter-population variability in yellow perch sexual size dimorphism

Uphoff, Christopher S.; Schoenebeck, Casey W.

doi:10.1080/02705060.2012.684893

Cited by 15 publications

(14 citation statements)

References 27 publications

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“…Letters indicates that means are significantly different at the P # 0.10 level. and attain greater lengths than males (Schoenebeck and Brown 2011;Uphoff and Schoenebeck 2012). The HSO regulation was designed to protect female walleye broodstock, and it has been successful in doing so, but because the population exhibits female-biased sexual size dimorphism males were not afforded the same protection.…”

Section: Discussionmentioning

confidence: 99%

Sex-specific Changes in Walleye Abundance, Size Structure and Harvest Following Implementation of Regulation to Protect Broodstock

Koupal

Katt

Schoenebeck

et al. 2015

Journal of Fish and Wildlife Management

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The popularity of walleye Sander vitreus fishing has resulted in the development of specialized regulations that are designed to protect these fisheries. In the case of Sherman Reservoir, Sherman County, Nebraska, the walleye population provides a sportfishing opportunity and serves as broodstock for the state. In 2009, for the primary purpose of protecting female broodstock, the regulation changed from a harvest limit of four walleye with 457-mm minimum length to allowing a reduced harvest limit of two walleye within a harvest slot (381–508 mm) and one walleye more than 711 mm. This study examined existing data sets to assess the percentage of spawning walleye protected with each regulation, sex-specific differences in relative abundance and size structure during broodstock collection and angler effort, total catch, and harvest of walleye. The new regulation has increased protection of female walleye by more than 90%, but decreased protection of male walleye by more than 60%. The relative abundance of female walleye caught per net during broodstock collection has more than doubled since the regulation was changed, but the size structure of female walleye collected during broodstock operations was similar. Correspondingly, the relative abundance of male walleye has declined since changing the regulation, but size structure remained similar. Effort and total catch of walleye by anglers were similar before and after the regulation was enacted, but harvest has increased by 130%. This regulation appears to protect female broodstock walleye, but it makes male walleye more vulnerable to angler harvest.

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Section: Discussionmentioning

confidence: 99%

Sex-specific Changes in Walleye Abundance, Size Structure and Harvest Following Implementation of Regulation to Protect Broodstock

Koupal

Katt

Schoenebeck

et al. 2015

Journal of Fish and Wildlife Management

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“…Male and female median and average lengths were the same or similar for mesh sizes 32, 38, and 46 where the numbers of both sexes appeared statistically large enough to discern sexual differences. Thus, it appears that, despite the known dimorphic differences in growth (Purchase et al 2005;Uphoff & Schoenebeck 2013), any potential morphometric differences were not apparent in similar-sized fishes, regardless of sex.…”

Section: Discussionmentioning

confidence: 92%

Gill net selectivity of yellow perch

Doll

Thomas

Lauer

2014

Journal of Freshwater Ecology

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Yellow perch Perca flavescens (Mitchill) are typically collected using multi-mesh gill nets; however, gear selectivity information for this species is sparse. Selectivity using experimental gill nets was determined for yellow perch using data collected from southern Lake Michigan from 2007 to 2012 using stretch mesh sizes of 12.5, 16, 20, 25, 32, 38, 46, 51, 64, and 76 mm. Female selectivity was best described by a model with a skewed (log-normal) distribution while males were best described by a normal distribution. When sex data were combined, the skewed (log-normal) distribution provided the best model. Differences in selectivity between sexes were minimal, but likely due to the variant size structure of the local population sampled, with females the larger sex. These findings suggest that bias in individual gill net selectivity can be used to target specific yellow perch size groups or to replace other gear types with unknown selectivity.

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“…In Dead Lake, female Yellow Perch experience faster growth in all age groups compared with males. Sexspecific growth rates occurs in many fish species (e.g., Suwannee Bass Micropterus notius [Bonvechio et al 2005], Largemouth Bass M. salmoides [Schramm andSmith 1988, Walleye Sander vitreus [Henderson et al 2003]), including Yellow Perch (Uphoff and Schoenebeck 2012) and is usually related to spawning activities. However, Schoenebeck and Brown (2012) suggest sexspecific growth rates may result from other anaerobic activities (e.g., foraging for prey and predator avoidance) coupled with spawning activities of male Yellow Perch.…”

Section: Discussionmentioning

confidence: 99%

Population Characteristics of Yellow Perch in Dead Lake, Florida

Bisping

Alfermann

Strickland

2019

Journal of Fish and Wildlife Management

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In Florida, the Yellow Perch Perca flavescens is known to exist only in the Apalachicola River watershed. We conducted a 2-y study (2015–2016) to assess population characteristics of Yellow Perch in Dead Lake, Florida. We also measured summertime (June–September 2016) water temperatures to identify temperature differences between two sections (West Arm Creek and the main pool) of Dead Lake. Using electrofishing, we collected 564 Yellow Perch ranging from 72 to 343 mm total length from West Arm Creek. An age sample showed Yellow Perch ranged in age from 0 to 6 y and strong year classes were produced in 2013 and 2015. High mean total length at age suggests Yellow Perch in Dead Lake are a fast-growing population, likely a result of limited abundance and a long growing season. This study showed low mean relative weight (Wr, 2015: 70; 2016: 67), which is similar to other southeastern populations. Stomach contents and diet analysis showed no differences between age groups, which suggests that Yellow Perch are opportunistic feeders. Dead Lake showed high water temperatures (≥28°C) during the summer months, but the spring-fed Stone Mill Creek may provide thermal refugia that allow fish to avoid stressful temperatures in the main pool of Dead Lake in summer. Limited awareness among anglers, coupled with low abundance and the fish's limited range in the state, likely contributes to the lack of exploitation of Yellow Perch in Florida.

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Quantifying inter-population variability in yellow perch sexual size dimorphism

Cited by 15 publications

References 27 publications

Sex-specific Changes in Walleye Abundance, Size Structure and Harvest Following Implementation of Regulation to Protect Broodstock

Sex-specific Changes in Walleye Abundance, Size Structure and Harvest Following Implementation of Regulation to Protect Broodstock

Gill net selectivity of yellow perch

Population Characteristics of Yellow Perch in Dead Lake, Florida

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