Influence of Sectioning Location on Age Estimates from Common Carp Dorsal Spines

Watkins, Carson J.; Klein, Zachary B.; Terrazas, Marc M.; Quist, Michael C.

doi:10.1080/02755947.2015.1042561

Cited by 8 publications

(6 citation statements)

References 27 publications

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“…These fish were placed on ice and later frozen for subsequent processing. Scales were removed from five Largemouth Bass per 10‐mm TL group, and dorsal spines (when present) were removed from Common Carp for aging (Weber and Brown 2011a; Watkins et al 2015). Scales were used instead of otoliths for Largemouth Bass so that the abundance of this piscivore could be maintained in the lakes.…”

Section: Methodsmentioning

confidence: 99%

Bolstering Piscivore Abundance to Restructure Small Impoundment Fish Communities

Michaletz

2020

N American J Fish Manag

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Small impoundments (hereafter, "lakes") provide close-to-home fishing opportunities for many anglers but do not always provide quality fishing, especially for panfish. Often, these lakes contain populations of slow-growing Bluegill Lepomis macrochirus and crappies Pomoxis spp. The presence of abundant Gizzard Shad Dorosoma cepedianum and Common Carp Cyprinus carpio is known to negatively influence these populations. Chemical and mechanical removal of these nuisance species requires intensive effort, is costly, and usually results in only short-term benefits. An alternative approach is to stock piscivores that prey on these species and reduce their abundances. Hybrid Striped Bass (Striped Bass Morone saxatilis × White Bass Morone chrysops) alone or in combination with Flathead Catfish Pylodictis olivaris were stocked into small lakes to consume Gizzard Shad and Common Carp. To evaluate the success of this approach, I determined whether stockings of hybrid Striped Bass and Flathead Catfish were (1) associated with a consequent reduction in abundances and changes in size structure of Common Carp and Gizzard Shad, (2) related to improved growth rates and size structure of Bluegill and crappie populations, and (3) associated with changes in Largemouth Bass Micropterus salmoides demographics and aquatic macrophyte coverage. Nine treatment lakes were each paired with a reference lake, and fish population variables and macrophyte coverage were analyzed with a before-after, control-impact design. With a few exceptions, additions of piscivores were largely unsuccessful in reducing Gizzard Shad and Common Carp abundances and in improving growth of panfishes and the additions had little effect on Largemouth Bass or macrophyte coverage. A multi-pronged approach combining several methods (e.g., stocking of piscivores, reducing nutrients, and mechanical or chemical removal) may be necessary to effectively reduce the abundances of Gizzard Shad and Common Carp in these small lakes.

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Section: Methodsmentioning

confidence: 99%

Bolstering Piscivore Abundance to Restructure Small Impoundment Fish Communities

Michaletz

2020

N American J Fish Manag

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“…We removed the dorsal spine from 10 Common Carp per centimeter-length group Yates et al 2016;Miranda and Colvin 2017). We cut dorsal spines at the junction with the body wall (Watkins et al 2015), placed them into individually marked envelopes, and returned them to the University of Idaho for processing. We mounted spines in epoxy and transversely sectioned them following Koch and Quist (2007).…”

Section: Field Samplingmentioning

confidence: 99%

“…We obtained the mean annual water surface elevation (m) from years 1999 to 2017 from a U.S. Geological Survey gaging station at Lake Spokane (USGS 12422500) and used that as an independent variable in regression models. We truncated growth increments at age 7 since even modest imprecision in annulus measurements resulted in considerable error in the evaluation of incremental growth (see Watkins et al 2015). In addition to evaluating growth of Common Carp, we also evaluated year-class strength.…”

Section: Data Summarization and Analysismentioning

confidence: 99%

“…In addition to evaluating growth of Common Carp, we also evaluated year-class strength. We used residuals from the catch curve as an index of recruitment to estimate how environmental factors were relative to year-class strength (Maceina 1997;Quist and Spiegel 2012;Watkins et al 2015). We used Akaike's information criterion corrected for small sample size (AIC c ) to rank candidate models (Burnham and Anderson 2002).…”

Section: Data Summarization and Analysismentioning

confidence: 99%

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Population Characteristics and the Potential Suppression of Common Carp in Lake Spokane, Washington

Feeken

Klein

Quist

et al. 2019

Journal of Fish and Wildlife Management

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Common Carp Cyprinus carpio is a nonnative species that often has deleterious effects on aquatic systems. As such, there is interest in suppressing nonnative Common Carp populations in areas where humans have introduced them. The objectives of this study were to 1) provide insight on efficient techniques for capturing Common Carp, 2) describe their population demographics and dynamics, 3) evaluate whether temperature and water elevation were related to growth and recruitment, and 4) develop an age-structured population model for evaluating different management scenarios of Common Carp removal in Lake Spokane, Washington. Catch rates of Common Carp varied among sampling gears with slightly higher catch rates in monofilament (mean 6 SD; 15.5 6 9.8 fish/net night) vs. multifilament (12.7 6 7.3 fish/net night) gill nets. Catch rates of Common Carp with nighttime electrofishing (0.3 6 0.4 fish/min) were higher than daytime electrofishing (0.1 6 0.2 fish/min). Common Carp in Lake Spokane exhibited variable recruitment, rapid growth, large-length structure, high longevity (i.e., age 18 y), and low total annual mortality (17.0%). Air temperature was positively associated with annual growth increments (R 2 0.25). Neither air temperature nor water elevation was highly correlated (R 2 0.20) to recruitment of Common Carp. A Beverton-Holt yield-perrecruit model suggested that yield declined with increasing exploitation. Recruitment overfishing would occur at exploitation rates of 20-40% for all targeted minimum length categories (i.e., 150, 300, 450 mm) except 600 mm. Results from this study provide important information on the ecology of Common Carp that can be used to guide management efforts (e.g., suppression) in western systems.

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“…However, due to its more regular shape, use of the dorsal spine may be preferred to that of fin rays (Yates et al 2016). Sections taken at B 25% of the total length of the dorsal spine have been shown to provide the most precise age estimates, with the section plane located at the 25% threshold being regarded as quite satisfactory (Watkins et al 2015). This finding indicates that dorsal spine disarticulation (or total amputation) can be avoided, resulting in less stress (and longterm handicap) to the fish.…”

Section: Directions For Future Researchmentioning

confidence: 99%

Age determination in common carp Cyprinus carpio: history, relative utility of ageing structures, precision and accuracy

Vilizzi

2018

Rev Fish Biol Fisheries

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The common carp Cyprinus carpio is one of the most widely-distributed freshwater fishes in the world. Due to its value for conservation and fisheries in several native/translocated areas of distribution and its detrimental effects on the aquatic ecosystem in most invasive areas, robust age-based population dynamics models are required for successful management of this species. The present study provides a global review of age determination in carp, including a historical account of ageing methods, an assessment of the relative utility of ageing structures, and an evaluation of precision and accuracy (i.e. validation) of age estimates. Historically, scales were by far the most widely-employed structure, followed by the operculum, otolith, dorsal spine, vertebra and fin ray. However, in countries where carp is categorised as 'high risk' of impact, use of alternative structures to the scale was predominant. Causal criteria analysis showed scales and opercula to provide inconsistent evidence for successful annulus identification/counting, whereas consistent evidence was found for otoliths, dorsal spines, vertebrae and (pectoral) fin rays. Precision was always above reference thresholds for scales, whereas for otoliths, dorsal spines and fin rays was in several cases below. Accuracy was addressed sporadically and mostly in high-risk countries. It is suggested that dorsal spines or pectoral fin rays should be used in lieu of scales as non-lethal ageing structures, and otoliths (or vertebrae, pending more research) otherwise, and that validation should always be attempted as part of the set-up of more appropriate ageing protocols and use of correct terminology.

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Influence of Sectioning Location on Age Estimates from Common Carp Dorsal Spines

Cited by 8 publications

References 27 publications

Bolstering Piscivore Abundance to Restructure Small Impoundment Fish Communities

Bolstering Piscivore Abundance to Restructure Small Impoundment Fish Communities

Population Characteristics and the Potential Suppression of Common Carp in Lake Spokane, Washington

Age determination in common carp Cyprinus carpio: history, relative utility of ageing structures, precision and accuracy

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