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Full-Text Articles in Life Sciences
The Reproductive Season Of The Highland Stoneroller, Campostoma Spadiceum, Evidenced By Museum Specimens, C. Renn Tumlison, Henry Robison, Grace Wills
The Reproductive Season Of The Highland Stoneroller, Campostoma Spadiceum, Evidenced By Museum Specimens, C. Renn Tumlison, Henry Robison, Grace Wills
Journal of the Arkansas Academy of Science
The Highland Stoneroller (Campostoma spadiceum) was described as a distinct species in 2010. Since then, the only study specific to this species is a survey of distribution, and nothing is known about reproduction. We examined 134 lots including 315 specimens of C. spadiceum housed in the Henderson State University collection of fishes to evaluate the timing of reproductive events. We dissected individuals to reveal sex and reproductive status. Females as small as 49 mm total length were able to yolk eggs, and follicles were in development by October. Ripe eggs were present in specimens collected from January through …
Vertebrate Natural History Notes From Arkansas, 2019, C. Renn Tumlison, Chris Mcallister, Henry Robison, Matt Connior, Ron Redman, Stan Trauth, Paul Port
Vertebrate Natural History Notes From Arkansas, 2019, C. Renn Tumlison, Chris Mcallister, Henry Robison, Matt Connior, Ron Redman, Stan Trauth, Paul Port
Journal of the Arkansas Academy of Science
Important observations of natural history often go unreported because they are not part of larger studies, but small details can provide insights that lead to interesting questions about ecological relationships or environmental change. We have compiled recent important observations of distribution, deformities, foods, parasites, and reproduction of various vertebrates. Included are a new record of Lake Sturgeon (Acipenser fulvescens), a new size record of mudpuppy (Necturus louisianensis), and a second observation of bilateral gynandromorphism in a Northern Cardinal (Cardinalis cardinalis). These unique observations continue to grow knowledge of vertebrate biology in Arkansas.
A Tale Of Two Sylamores: Understanding Relationships Among Land Use, Nutrients, And Aquatic Communities Across A Subsidy-Stress Gradient, Danielle Braund, Andrew Feltmann, George Gavrielides, Katherine Lang, Jennifer Main, Anastasia Mogilevski, Justin Mosbey, Rebecca Relic, Calvin Rezac, Brianna Trejo, Ginny Adams, Steven R. Adams
A Tale Of Two Sylamores: Understanding Relationships Among Land Use, Nutrients, And Aquatic Communities Across A Subsidy-Stress Gradient, Danielle Braund, Andrew Feltmann, George Gavrielides, Katherine Lang, Jennifer Main, Anastasia Mogilevski, Justin Mosbey, Rebecca Relic, Calvin Rezac, Brianna Trejo, Ginny Adams, Steven R. Adams
Journal of the Arkansas Academy of Science
Agricultural land use is known to degrade aquatic systems with high inputs of nutrients, sediments, and pesticides. Increased nutrients can lead to increased algal growth and thus possible hypoxic conditions in slow moving water, while increased sediment loads have been shown to obstruct light and reduce substrate stability. These conditions negatively impact primary producers, macroinvertebrates, and fish. However, small-scale changes in land use can subsidize an aquatic ecosystem instead, where an increase in nutrients allows nutrient-limited biota to flourish, and minor increases in sedimentation may help support populations of collector-filterers. The stimulation in performance caused by small disturbances is part …