SEAFWA Journal Volume 3, March 2016

ISSN
2330-5142
SEAFWA Journal Volume 3, March 2016 cover

Spotted Bass Population Structure and Diet in Wadeable and Non-wadeable Streams Draining the Lake Pontchartrain Basin

SEAFWA Journal Volume 3, March 2016

Spotted bass (Micropterus punctulatus) provide popular recreational fisheries in southeastern U.S. streams. We studied spotted bass population structure and diet from wadeable (< 1 m deep on average, n = 174, 21 sites) and non-wadeable (n = 498, 32 sites) reaches of the Lake Pontchartrain Basin in Mississippi and Louisiana to determine if populations should be managed separately by stream size. Sampling occurred April-November 2009-2012 by hook-and-line angling, boat-mounted electrofishing, and seines. Size structure was similar between stream type and with few quality-sized fish (PSD...

Seasonal Abundance, Age Structure, GSI, and Gonad Histology of Yellow Bass in the Upper Barataria Estuary, Louisiana

SEAFWA Journal Volume 3, March 2016

The yellow bass (Morone mississippiensis) is a common, yet lesser known species of the Mississippi River drainage basin; few life history studies on the species have been published throughout its range. To describe population level gonad development, seasonal abundance, and age and growth, yellow bass were collected every 7-14 days with monofilament gill nets from 14 November 2008 to 17 November 2009 from the upper Barataria Estuary (UBE) in south Louisiana. Mean catch-per-unit effort (CPUE) was highest from February-April, indicating that yellow bass used the UBE seasonally. Yellow bass...

Relationships between Hydrology and Largemouth Bass Growth in the Ouachita River, Arkansas

SEAFWA Journal Volume 3, March 2016

We explored whether increased river flows negatively affected growth of largemouth bass (Micropterus salmoides) in the lower Ouachita River, Arkansas. To test this hypothesis, largemouth bass (n = 460) were collected during 2008-2010 from the Felsenthal Reservoir region of the river. Largemouth bass were aged and annual growth increments were calculated using standard back-calculation techniques. Growth of largemouth bass was relatively rapid in the Ouachita River, with von Bertalanffy growth model parameters determined as L = 513 mm, K = 0.324, and tο = -0.314;...

Population Dynamics of Introduced Flathead Catfish in Two Atlantic Coastal Plain Rivers Under Differing Management Strategies

SEAFWA Journal Volume 3, March 2016

We described and compared population dynamics of introduced flathead catfish (Pylodictis olivaris) between the Satilla River, Georgia, and the Little Pee Dee River, South Carolina. Both of these Atlantic coastal plain rivers are blackwater, low productivity systems that historically supported popular redbreast sunfish (Lepomis auritus) fisheries. Flathead catfish have been established in the Little Pee Dee River since the late 1970s or early 1980s, whereas the species was introduced into the Satilla River in the mid 1990s. Both populations are managed differently by their respective state...

Occupancy of Large Canids in Eastern North Carolina - A Pilot Study

SEAFWA Journal Volume 3, March 2016

We used camera traps to estimate detection and occupancy of radio-collared and non-collared red wolves, coyotes, and red wolf-coyote hybrids (Canis rufus, C. latrans, and C. rufus x C. latrans) in Hyde County, North Carolina. This pilot study was to determine these variables among species and compare them between private and public lands. Large canids occurred throughout the public lands sampled, but occupancy of radio-collared individuals was low (0.41). Estimated occupancy of large canids throughout the study area was 0.74 with an estimated detection of 0.05. Occupancy of non-collared...

New River Crayfish Range Wide Status Assessment

SEAFWA Journal Volume 3, March 2016

The New River crayfish, (Cambarus chasmodactylus), was described in 1966 from the East Fork of the Greenbrier River, West Virginia, and historically occurred throughout the New River Basin from the Greenbrier River sub-basin in West Virginia, upstream through Virginia, and into the headwaters of the South Fork New River in North Carolina. The New River crayfish was part of a federal listing species petition in 2010 and it is currently being evaluated for listing as either threatened or endangered by the U.S. Fish and Wildlife Service under the Endangered Species Act. In order to understand...

Movement with the Moon: White-tailed Deer Activity and Solunar Events

SEAFWA Journal Volume 3, March 2016

White-tailed deer (Odocoileus virginianus) activity patterns are predominately crepuscular. However, the general populace believes that deer activity is also influenced by lunar factors. This belief is demonstrated by the countless "solunar charts" claiming to provide peak periods of deer activity. While research has identified solar and lunar influences on behavioral patterns in some species, descriptions of solunar factors on white-tailed deer are rare. Our goal was to evaluate whether solunar charts can predict periods of increased activity in white-tailed deer. We used 38 adult male,...

Meta-analysis of Natural Resource Conservation Plan Evaluations

SEAFWA Journal Volume 3, March 2016

The number of studies evaluating the quality and content of many types of plans have grown in recent decades. Natural resource conservation plans have been included in some of these plan evaluation studies; however, no meta-analysis of natural resource planning literature has been conducted. This focus is needed because natural resource conservation planning differs from other types (e.g., hazards mitigation, urban planning), in that planners often come from natural resource backgrounds, must plan in compliance with federal and state planning mandates, and typically operate under the...

Mapping Potential Spawning Substrate for Shortnose and Atlantic Sturgeon in Coastal Plain Rivers of Georgia Using Low-cost Side-scan Sonar

SEAFWA Journal Volume 3, March 2016

Characterizing the habitat of large, navigable rivers is difficult, yet this information is critically important to the conservation of a variety of resident aquatic species. We used low-cost sonar habitat mapping to map benthic substrates throughout nearly 1000 km of four Coastal Plain rivers in Georgia and to quantify the distribution of rocky substrates that may serve as potential spawning habitat for two imperiled sturgeon species, the shortnose sturgeon (Acipenser brevirostrum) and the Atlantic sturgeon (Acipenser oxyrinchus). Although we identified hard, rocky substrates in roughly...

Living on the Edge: Persistence of a Fringe Striped Bass Population

SEAFWA Journal Volume 3, March 2016

The lower Trinity River and Trinity Bay in Texas represent the southern limit of the native range of striped bass (Morone saxatilis). Life-history traits of fishes in the northern hemisphere often vary with latitude, with southern populations exhibiting faster growth, earlier age at maturity, reduced longevity, and higher mortality than northern populations. At this southern limit, water temperatures in the Trinity River often exceed reported tolerances for striped bass. We evaluated the likelihood that this fringe striped bass population can persist by examining their life history...