Movement, recruitment, and abundance relationships of Prairie Chub: an endemic Great Plains cyprinid

Brewer, Shannon K.; Wedgeworth, Maeghen; Perkin, Joshua S.; Mollenhauer, Robert; Steffensmeier, Zachary D.

doi:10.3996/css77088785

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low frequency of these opportunistic spawning efforts over our 2‐year study period suggests that the contribution of this activity would be minimal relative to the population size (Brewer et al. 2021). However, we cannot rule out the contribution of these low‐frequency events to population persistence during extended drought periods.…”

Section: Discussionmentioning

confidence: 90%

“…Our results show that Prairie Chub spawning began in April and peaked during June and early July; however, the duration of spawning can be much longer or shorter and somewhat opportunistic. For example, as part of another sampling effort, age-0 Prairie Chub measuring <20 mm TL were found in the Wichita River main stem in November 2020 after a higher discharge period, indicating that some spawning occurred as late as October (Brewer et al 2021). We finished sampling in August of 2020 because we had not captured additional small Prairie Chub for 4 weeks, but some spawning could have occurred later in the year.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Variation in Prairie Chub hatch relationships across wet and dry years in the upper Red River basin

Wedgeworth

Mollenhauer

Brewer

2023

N American J Fish Manag

Self Cite

View full text Add to dashboard Cite

ObjectiveThe Prairie Chub Macrhybopsis australis is a poorly studied minnow species endemic to the upper Red River basin and is of both state and federal conservation interest due to uncertainty about its life history and potential listing status. The upper Red River basin of Oklahoma and Texas is a harsh environment where drought and extreme flow events are exacerbated by human alterations. As an assumed pelagic‐broadcast‐spawning minnow, the Prairie Chub is capable of a protracted spawning season and larval fish survival is assumed to be linked to discharge and streamflow variability.MethodsWe systematically collected 2,017 age‐0 Prairie Chub from seven sites (North Fork Red River, Salt Fork Red River, Pease River, Red River, Prairie Dog Town Fork Red River, North Wichita River, and South Wichita River) with variable flow patterns during April–September 2019 and May–August 2020. We used otolith age estimates and back calculations to determine successful spawning dates. We used a hurdle model framework to examine relationships between hatch probability and hatch frequency.ResultHatch probability had a negative relationship with calendar day and declined as calendar day increased. Hatch counts peaked in late June and early July and declined thereafter in 2019 but showed no discernible peak during the spawning season in 2020. Hatch probability during the spawning season increased with relative flow and air temperature. Increased hatch counts were also positively related to discharge variability (CV) for the 10 d prior to hatch dates.ConclusionOur findings indicated that successful hatches had considerable spatial and temporal variability, with some sites contributing minimally to the population during some years. Spatial and temporal variability of hatch probability and hatch frequencies pose a variety of considerations for future conservation and management efforts, particularly given the pending federal listing status of the species.

show abstract

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%