Analysis of bigmouth buffalo Ictiobus cyprinellus spawning phenology in Minnesota reveals 50-year recruitment failure and conservation concern Article Swipe
Alec R. Lackmann
,
Sam Seybold
,
Ewelina S. Bielak‐Lackmann
,
Walt Ford
,
Malcolm G. Butler
,
Mark E. Clark
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1038/s41598-024-70237-5
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1038/s41598-024-70237-5
The bigmouth buffalo Ictiobus cyprinellus (Catostomidae) is a freshwater fish native to North America that is known for its longevity. During the 1970s, the bigmouth buffalo was recorded as declining in Canada, Minnesota, and North Dakota and became a protected species in Canada. In the USA, population declines are exacerbated by wasteful recreational bowfishing, lack of fisheries management, and overall lack of knowledge. However, recent studies have revealed the exceptional lifespan of bigmouth buffalo, their negligible senescence, slow growth, delayed maturity, and episodic recruitment. Yet little is known about the spawning phenology of bigmouth buffalo, nor their age demographics in east central Minnesota. In this 2021–2023 study of bigmouth buffalo from Rice Lake National Wildlife Refuge we found that 99.7% (389 of 390) of the extant population hatched prior to 1972 despite annual spawning in Rice Lake. Moreover, recruitment success declined significantly since water control measures were established (1953). We found males arrive to spawning grounds with females but depart later, that both the midpoint and duration of spawn significantly vary across years, and that more massive females of the same age range invest disproportionately more in ovaries. Extensive post-spawn seining revealed bigmouth buffalo young-of-the-year in low numbers, but by mid-to-late summer they were no longer evident having likely succumbed to predation. Overall, these findings thoroughly reveal one of the oldest populations of vertebrate currently known (median age of 79 years as of 2024) and expose the stark vulnerability of a bigmouth buffalo population for which substantial recruitment has not occurred for more than six decades. Multiple lines of evidence indicate that the long-lived bigmouth buffalo is vulnerable, that a precautionary approach is immediately needed, and that the unlimited and unregulated kill-fishery be closed.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1038/s41598-024-70237-5
- OA Status
- gold
- Cited By
- 3
- References
- 40
- Related Works
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- OpenAlex ID
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All OpenAlex metadata
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https://openalex.org/W4402172083Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1038/s41598-024-70237-5Digital Object Identifier
- Title
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Analysis of bigmouth buffalo Ictiobus cyprinellus spawning phenology in Minnesota reveals 50-year recruitment failure and conservation concernWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-09-03Full publication date if available
- Authors
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Alec R. Lackmann, Sam Seybold, Ewelina S. Bielak‐Lackmann, Walt Ford, Malcolm G. Butler, Mark E. ClarkList of authors in order
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https://doi.org/10.1038/s41598-024-70237-5Publisher landing page
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://doi.org/10.1038/s41598-024-70237-5Direct OA link when available
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Spawn (biology), Wildlife, Biology, Population, Phenology, Predation, Fishery, Geography, Longevity, Ecology, Demography, Genetics, SociologyTop concepts (fields/topics) attached by OpenAlex
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3Total citation count in OpenAlex
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2025: 2, 2024: 1Per-year citation counts (last 5 years)
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