Browsing Auburn Theses and Dissertations by Author "Johnston, Carol"

Now showing items 1-20 of 23

Acoustic communication, reproduction and hormone modulation in the Catonotus darters

Noel, Patricia (2012-05-04)

Acoustic communication is an essential part of life for a variety of living beings. Acoustic communication is known to be essential to reproduction in mammals, birds, amphibians, insects and fish. Recently there have been ...

Assessing Persistence of Two Rare Darter Species Using Population Viability Analysis Models

Hartup, Wendi (2005-08-15)

The objective of this study was to assess whether results predicted from population viability analysis (PVA) models resemble historical and current presence/absence data for Etheostoma boschungi and Etheostoma brevirostrum. ...

Combining morphological, acoustic, and genetic techniques to better understand hybridization of the most abundant toad in Alabama: Anaxyrus fowleri

Chivers, Jacqueline Marie (2016-04-29)

The Anaxyrus americanus species complex has provided an interesting group of species to study hybridization. Two species in particular, Anaxyrus americanus and Anaxyrus fowleri, are known to hybridize in northern portions ...

Cryptic Tolerant Species and Their Potential Effect on Index of Biotic Integrity (IBI) Scores, with the Presentation of an Alternative Metric of Stream Health

Hilburn, Bryson (2023-04-17)

Metrics such as the Index of Biotic Integrity (IBI) are often used by management agencies to estimate the abstract property of stream health. These metrics are usually predicated on the belief that certain fish species are ...

Current Distribution and Habitat Use of the Threatened Snail Darter (Percina tanasi) in Alabama

Shollenberger, Kurtis (2019-04-16)

The distribution of many fishes in larger rivers is poorly known, in part due to the difficulties of sampling them. This is especially true for small -bodied or rare species, such as the Snail Darter (Percina tanasi). This ...

Current Status of the Bluestripe Shiner, Cyprinella callitaenia, in Alabama tributaries of the Chattahoochee River

Ellwanger, Robert (2019-11-25)

The imperilment of many freshwater fish species has become increasingly evident across the Southeastern United States in the last half-century. Increases in water usage, urbanization, and habitat alteration, as well as ...

Distribution, abundance, and population characteristics of shoal bass in tributaries of the Chattahoochee River, Alabama

Stormer, David (2007-12-15)

The shoal bass Micropterus cataractae is the most recently described black bass species and in east-central Alabama, this fish only occurs in streams that flow into the Chattahoochee River. Recently, shoal bass were listed ...

The Effects of Anthropogenic Traffic Noise on Auditory and Endocrine Function in the Blacktail Shiner, Cyprinella venusa

Crovo, Jenna (2022-01-03)

Acoustic signals are a vital component of important behaviors such as courtship, foraging, parental care, and aggression. Acoustic communication is a modality utilized by a plethora of animals, including fishes. Recent ...

Effects of Hydrologic Change on Stream Fish Assemblages in Alabama

Stiles, Warren (2016-04-26)

Alabama is home to the most diverse aquatic fauna in the United States. A major threat to this fauna is habitat degradation mediated by hydrologic alteration. Land cover changes contribute to disrupted flow patterns and ...

Effects of Spatial and Temporal Variability of Shoal Habitat on Stream Fish Assemblages in Chattahoochee Tributaries, Alabama

Kennon, Ronald (2007-12-15)

Abiotic factors associated with habitat quality may have profound effects on fish assemblage structure. Variability in physical habitat parameters as well as temporal fluctuation in characteristics such as water depth and ...

Evolution of Signal Divergence and Behavior in Cyprinella galactura, the whitetail shiner

Phillips, Catherine (2006-12-15)

Acoustic signaling in anurans, insects, birds, and mammals has played an important role as an interspecific isolating mechanism and is also believed to be a mechanism of sexual selection in intraspecific mate choice. A ...

A habitat risk assessment and breeding site projection for Slackwater Darter (Etheostoma boschungi) in Limestone Creek

Roy, Meagan (2017-04-16)

Catalysts for species decline are difficult to identify and are rarely single. The use of predictive models that incorporate multiple factors have proven useful in recognizing major drivers of species declines in multiple ...

Habitat Use of Larval and Juvenile Cape Fear shiners (Notropis mekistocholas)

Henderson, Andrew (2008-12-15)

The factors responsible for imperilment of freshwater fishes are diverse, but most can be categorized as some form of habitat loss or alteration. Understanding effects of various forms of habitat alteration on single ...

Hearing Capabilities of the Atlantic Mudskipper (Periopthalmus barbarus) Across Mutiple Media.

Todd, Davis (2021-04-27)

An animal’s sensory detection mechanisms are often shaped by the environment in which that animals lies. Amphibious fishes provide a rare opportunity to study how hearing has adapted to match the extremely unique lifestyle ...

Hearing evolution across the air-water interface: lessons from comparative audiometry in turtles and salamanders

Zeyl, Jeffrey (2016-12-12)

The physical differences between water and air present unique challenges to organisms living in both environments, including challenges to the sense organs. In the auditory system, acoustic impedance mismatch is a challenge ...

Influence of dams on stream fish biodiversity across a diverse Georgia landscape

Ozburn, Nicholas (2007-08-15)

The composition of a stream fish assemblage is strongly influenced by the drainage basin, physiographic region, and the stream order it occurs in. It is also well known that anthropogenic disturbances can dramatically ...

Life History Plasticity of the Blacktail Shiner (Cyprinella venusta) across Disturbance Gradients in Alabama Streams

Casten, Lemuel (2006-08-15)

Four populations of the blacktail shiner, Cyprinella venusta were studied to determine life history parameter variation across disturbance gradients in Alabama streams. Consistent with life history theory, fishes from the ...

Persistence of fish assemblages on sand and gravel bar habitat in the Alabama River, Alabama

Haley, Timothy (2012-04-19)

The Alabama River is a biologically diverse system containing over 180 native fishes and at least 33 endemics. Many studies have surveyed species of conservation concern, such as the federally endangered Alabama Sturgeon ...

Physiological and behavioral impacts of railway noise on stream fishes

Friebertshauser, Ryan (2019-04-17)

While the expansion of anthropogenic noise studies in aquatic habitats has produced conservation-based results for marine organisms, little attention has been paid to the potential impacts of anthropogenic noise on freshwater ...

Relations Between Shoal Bass and Sympatric Congeneric Basses in the Flint River, Georgia

Goclowski, Matthew (2010-04-09)

Shoal bass Micropterus cataractae is a fluvial specialist bass species endemic to the Apalachicola River drainage, which co-occurs with native largemouth bass M. salmoides throughout its range. Spotted bass M. punctulatus ...