Annual changes in water quality and sportfish community structure following commercial harvest of common carp and bigmouth buffalo

Simonson, Martin A.; Weber, Michael J.; Wilkinson, Grace M.; Annear, Andrew R.

doi:10.1080/10402381.2023.2209780

Cited by 2 publications

(5 citation statements)

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“…High harvest of these populations may result in a truncated age structure. Bigmouth Buffalo commercial harvest occurs annually across these three lakes, with harvest typically lower on Center Lake compared to Five Island Lake or Silver Lake (Simonson et al 2022). Variation in harvest among populations may have resulted in variation in population characteristics among the three lakes and shorter longevity compared to other populations.…”

Section: Discussionmentioning

confidence: 99%

“…Because Bigmouth Buffalo age data and mortality estimates are sparse, it is difficult to estimate or speculate on the average Bigmouth Buffalo mortality rates among populations or within regions. Some populations appear to have very low mortality and are supported by a limited number of recruitment events (Lackmann et al 2019(Lackmann et al , 2023, whereas others have consistent recruitment and have been commercially harvested at high rates (e.g., 333,000 kg/year: Rose and Moen 1952; 373 kg/ha/year: Simonson et al 2022). High harvest of these populations may result in a truncated age structure.…”

Section: Discussionmentioning

confidence: 99%

“…2019, 2023), whereas others have consistent recruitment and have been commercially harvested at high rates (e.g., 333,000 kg/year: Rose and Moen 1952; 373 kg/ha/year: Simonson et al. 2022). High harvest of these populations may result in a truncated age structure.…”

Section: Discussionmentioning

confidence: 99%

“…2021; Simonson et al. 2022). Despite the species commercial importance, biologists have little data regarding Bigmouth Buffalo population dynamics and the potential effects of commercial harvest on populations.…”

mentioning

confidence: 99%

“…Similarly, catostomids (including Bigmouth Buffalo) in the upper Mississippi River basin comprised 35% of the total commercial harvest, resulting in an average of US$1.2 million per year between 2001and 2005(GLMRIS 2012. Commercial fishers also harvest Bigmouth Buffalo in shallow natural lakes throughout the Midwest, with harvests of nearly 400 kg Á ha À1 Á year À1 in some instances (Starostka and Applegate 1970;GLMRIS 2012;Lackmann et al 2021;Simonson et al 2022). Despite the species commercial importance, biologists have little data regarding Bigmouth Buffalo population dynamics and the potential effects of commercial harvest on populations.…”

mentioning

confidence: 99%

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Precision and Bias of Three Bigmouth Buffalo Aging Structures

Prull

Simonson

Weber

2023

N American J Fish Manag

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The Bigmouth Buffalo Ictiobus cyprinellus is a long‐lived catostomid with ecological and commercial harvest value. Management of Bigmouth Buffalo relies on accurate age data for population dynamic assessments (recruitment, growth, and mortality), but between‐reader precision of nonlethal aging structures compared to otoliths has not been assessed. We analyzed age bias and between‐reader precision of ages estimated from pectoral and dorsal fin rays relative to lapillus otoliths for Bigmouth Buffalo (n = 115) captured from shallow natural lakes in Iowa. Maximum agreed age was 21 years for otoliths, 15 years for pectoral fin rays, and 14 years for dorsal fin rays. Ages estimated from pectoral fin rays were the most precise (CV = 12.6%; average percent error [APE] = 8.9%), followed by dorsal fin rays (CV = 16.1%; APE = 11.4%) and otoliths (CV = 21.5%; APE = 16.5%). Pectoral fin rays also had higher exact agreement between readers (37%) and higher agreement within 1 year (77%) compared to dorsal fin rays (35% exact; 69% within 1 year) and lapillus otoliths (17% exact; 61% within 1 year). Both dorsal fin rays and pectoral fin rays underestimated age relative to otoliths, which resulted in younger population age structures and larger mean length‐at‐age estimates. Our results suggest that biologists can use dorsal and pectoral fin rays as viable nonlethal structures for younger fish (up to 10 years for dorsal fin rays; up to 13 years for pectoral fin rays), whereas otoliths can be difficult to age but are necessary to accurately determine age for older individuals.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Precision and Bias of Three Bigmouth Buffalo Aging Structures

Prull

Simonson

Weber

2023

N American J Fish Manag

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Introducing Copi as a Positive Path Toward Combatting Invasive Carps in North America

Garvey,

Irons,

Behnfeldt

et al. 2024

Fisheries

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A group of loosely related, large‐bodied fishes collectively called carps have had a complex relationship with North Americans. Despite lessons learned about invasive Common Carp Cyprinus carpio in the early 1900s, Bighead Carp Hypophthalmichthys nobilis, Black Carp Mylopharyngodon piceus, Grass Carp Ctenopharyngodon idella, and Silver Carp H. molitrix were introduced to the United States more than 50 years ago and are expanding throughout the Mississippi River basin. Increased economic value in the North American seafood market could aid management. Complete eradication through harvest is unlikely, but controlling densities and containing dispersal may be possible. Improving perceptions of nutrition, palatability, and safety of wild‐caught carps should increase consumer demand. A branding and marketing effort launched in June 2022 renamed the foodstuff produced from the four species as the trademarked brand Copi. The “Choose Copi: Eat Well. Do Good.” campaign allows consumers to know that these fishes are an environmentally sound and responsible alternative to other seafood choices. The Copi brand has gained interest nationwide, with food processors and distributors engaged, although the contribution of Copi to harvest removal from rivers and resulting population dynamics is yet to be quantified. Developing a regional fishing industry for Copi, while also aiding fisheries and aquaculture for native species, remains an economic and logistical challenge within the vast river network.

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Annual changes in water quality and sportfish community structure following commercial harvest of common carp and bigmouth buffalo

Cited by 2 publications

References 87 publications

Precision and Bias of Three Bigmouth Buffalo Aging Structures

Precision and Bias of Three Bigmouth Buffalo Aging Structures

Introducing Copi as a Positive Path Toward Combatting Invasive Carps in North America

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