Life History and Ecology of the Bluntnose Shiner (Notropis simus pecosensis) in the Pecos River of New Mexico

Hatch, Michael D.; Baltosser, William H.; Schmitt, C. Gregory

doi:10.2307/3671049

Cited by 23 publications

(25 citation statements)

References 2 publications

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“…The use of density to monitor spatial and temporal trends in fish abundance in shallow river habitats is widely accepted in fisheries science and has been shown by both experimental and statistical analysis to be a valid means of estimating abundance (Richards & Schnute 1986). Pecos bluntnose shiner spawns from May through August (Hatch et al. 1985) which is more protracted than Rio Grande silvery minnow.…”

Section: Methodsmentioning

confidence: 99%

“…Department of the Interior, Federal Register 1987). The adult population of Pecos bluntnose shiner is now restricted to a 150‐km segment (juveniles are found downstream of this stretch) prone to river intermittency that is nested within an undammed, 333 km stretch of the Pecos River extending from downstream of Sumner Reservoir to above Brantley Reservoir, New Mexico (Hatch et al. 1985; Propst 1999; Hoagstrom et al.…”

Section: Introductionmentioning

confidence: 99%

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Genetic effective size, Ne, tracks density in a small freshwater cyprinid, Pecos bluntnose shiner (Notropis simus pecosensis)

et al. 2010

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Genetic monitoring tracks changes in measures of diversity including allelic richness, heterozygosity and genetic effective size over time, and has emerged as an important tool for understanding evolutionary consequences of population management. One proposed application of genetic monitoring has been to estimate abundance and its trajectory through time. Here, genetic monitoring was conducted across five consecutive year for the Pecos bluntnose shiner, a federally threatened minnow. Temporal changes in allele frequencies at seven microsatellite DNA loci were used to estimate variance effective size (N(eV)) across adjacent years in the time series. Likewise, effective size was computed using the linkage disequilibrium method (N(eD)) for each sample. Estimates of N(e) were then compared to estimates of adult fish density obtained from traditional demographic monitoring. For Pecos bluntnose shiner, density (catch-per-unit-effort), N(eV) and N(eD) were positively associated across this time series. Results for Pecos bluntnose shiner were compared to a related and ecologically similar species, the Rio Grande silvery minnow. In this species, density and N(eV) were negatively associated, which suggested decoupling of abundance and effective size trajectories. Conversely, density and N(eD) were positively associated. For Rio Grande silvery minnow, discrepancies among estimates of N(e) and their relationships with adult fish density could be related to effects of high variance in reproductive success in the wild and/or effects of supplementation of the wild population with captive-bred and reared fish. The efficacy of N(e) as a predictor of density and abundance may depend on intrinsic population dynamics of the species and how these dynamics are influenced by the landscape features, management protocols and other factors.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic effective size, Ne, tracks density in a small freshwater cyprinid, Pecos bluntnose shiner (Notropis simus pecosensis)

et al. 2010

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“…The species was state-listed by New Mexico as endangered in 1975 (NMDGF 2012) and federally listed as threatened in 1987 (USFWS 1987). The fish is relatively short-lived, with a lifespan of 2 to 3 years in the wild (Hatch et al 1985;Bestgen and Platania 1990;Hoagstrom et al 2008b). From May through the end of September, spawning was historically cued by high-flow events from snowmelt runoff and summer monsoon rains that increased flow from a few hours to a few days.…”

Section: Introductionmentioning

confidence: 99%

“…From May through the end of September, spawning was historically cued by high-flow events from snowmelt runoff and summer monsoon rains that increased flow from a few hours to a few days. Spawning cues currently include summer precipitation, large volume of long duration water release from a large impoundment (Sumner Dam), and flooding from nonregulated tributary inputs (Hatch et al 1985;Hoagstrom et al 2008b).…”

Section: Introductionmentioning

confidence: 99%

Movement patterns and dispersal potential of Pecos bluntnose shiner (Notropis simus pecosensis) revealed using otolith microchemistry

Chase

Caldwell

Carleton

et al. 2015

Can. J. Fish. Aquat. Sci.

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Natal origin and dispersal potential of the federally threatened Pecos bluntnose shiner (Notropis simus pecosensis) were successfully characterized using otolith microchemistry and swimming performance trials. Strontium isotope ratios ( 87 Sr: 86 Sr) of otoliths within the resident plains killifish (Fundulus zebrinus) were successfully used as a surrogate for strontium isotope ratios in water and revealed three isotopically distinct reaches throughout 297 km of the Pecos River, New Mexico, USA. Two different life history movement patterns were revealed in Pecos bluntnose shiner. Eggs and fry were either retained in upper river reaches or passively dispersed downriver followed by upriver movement during the first year of life, with some fish achieving a minimum movement of 56 km. Swimming ability of Pecos bluntnose shiner confirmed upper critical swimming speeds (U crit ) as high as 43.8 cm·s −1 and 20.6 body lengths·s −1 in 30 days posthatch fish. Strong swimming ability early in life supports our observations of upriver movement using otolith microchemistry and confirms movement patterns that were previously unknown for the species. Understanding patterns of dispersal of this and other small-bodied fishes using otolith microchemistry may help redirect conservation and management efforts for Great Plains fishes.Résumé : L'origine natale et le potentiel de dispersion du méné (Notropis simus pecosensis), une espèce menacée au niveau fédéral, ont été caractérisés avec succès par la microchimie des otolithes et des essais de performance natatoire. Les rapports d'isotopes de strontium ( 87 Sr: 86 Sr) des otolithes chez le fondule résident (Fundulus zebrinus) ont été utilisés comme substituts des rapports d'isotopes de strontium dans l'eau et ont révélé trois tronçons distincts sur le plan isotopique le long de 297 km de la rivière Pecos (Nouveau-Mexique, États-Unis). Deux motifs distincts de déplacements associés au cycle biologique ont été décelés chez méné. Les oeufs et les alevins étaient soit retenus dans des tronçons supérieurs de la rivière ou dispersés passivement vers l'aval pour ensuite se déplacer vers l'amont durant la première année de vie, le déplacement minimum de certains poissons atteignant 56 km. La capacité natatoire de méné a confirmé des vitesses de nage critiques supérieures (U crit ) pouvant atteindre 43,8 cm·s -1 et 20,6 longueurs du corps·s -1 30 jours après l'éclosion des poissons. Une bonne capacité natatoire tôt durant la vie appuie nos observations de déplacements vers l'amont obtenues de la microchimie des otolithes et confirme des motifs de déplacement jusqu'ici inconnus pour cette espèce. La compréhension des motifs de dispersion de cette espèce et d'autres poissons à petit corps à l'aide de la microchimie des otolithes pourrait aider à réorienter les efforts de conservation et de gestion des poissons des grandes plaines de l'Ouest. [Traduit par la Rédaction]

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“…Selection of data to represent the spawning population involved considerable uncertainty because of a paucity of published data on size at maturity and a spawning season of at least three months (~o a~s t r o m et al 2008). Hatch et al (1985) reported that several females 2 41 mm SL contained at least a few mature oocytes and Bestgen and Platania (1 990) reported mature female Rio Grande bluntnose shiner (n = 16, Notropis simus simus) were > 40 mm SL. Lacking more precise data, we considered the potential spawning population to wnsist of fish Z 35 mm SL collected during June through August, to account for growth during the spawning season and males reaching maturity at smaller lengths than females.…”

Section: A Re-analysis Of Data and Critique Of Medley Et Al -"Simulamentioning

confidence: 99%

A Re-Analysis of Data and Critique of Medley et al.—“Simulated Transport and Retention of Pelagic Fish Eggs during an Irrigation Release in the Pecos River, New Mexico”

Zymonas¹,

Propst²

2009

Journal of Freshwater Ecology

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Life History and Ecology of the Bluntnose Shiner (Notropis simus pecosensis) in the Pecos River of New Mexico

Cited by 23 publications

References 2 publications

Genetic effective size, Ne, tracks density in a small freshwater cyprinid, Pecos bluntnose shiner (Notropis simus pecosensis)

Genetic effective size, Ne, tracks density in a small freshwater cyprinid, Pecos bluntnose shiner (Notropis simus pecosensis)

Movement patterns and dispersal potential of Pecos bluntnose shiner (Notropis simus pecosensis) revealed using otolith microchemistry

A Re-Analysis of Data and Critique of Medley et al.—“Simulated Transport and Retention of Pelagic Fish Eggs during an Irrigation Release in the Pecos River, New Mexico”

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