Journal of the Southeastern Association of Fish and Wildlife Agencies

Previous studies of tournament-related impacts on black bass (Micropterus spp.) have concluded that live-release tournaments have minor effects on fisheries. Prompted by a decline in numbers of largemouth bass (M. salmoides) ≥ 458 mm total length (TL) and a high ratio of tournament weighed-in fish to harvested fish by non-tournament anglers, we assessed the impacts of tournament angling at Amon G. Carter Reservoir, Texas (623 ha). In 2007, we tagged 786 largemouth bass and estimated fishing mortality separately for tournament and non-tournament anglers. Instantaneous total fishing mortality was estimated to be 0.14, with tournament mortality responsible for 65% of all angling-caused fish deaths. Our simulation model predicted abundance of largemouth bass ≥ 356 mm and ≥ 457 mm would increase by 6% and 9%, respectively, under a 50% reduction in tournament catch and by 13% and 20%, respectively, if there was no retention of tournament fish.

The objectives of this study were to evaluate the population dynamics of bowfin (Amia calva) in Lake Lindsay Grace, Georgia, and to compare those dynamics to other bowfin populations. Relative abundance of bowfin sampled in 2010 in Lake Lindsay Grace was low and variable (mean±SD; 2.7±4.7 fish per hour of electrofishing). Total length (TL) of bowfin collected in Lake Lindsay Grace varied from 233-683 mm. Age of bowfin in Lake Lindsay Grace varied from 0-5 yr. Total annual mortality (A) was estimated at 68%. Both sexes appeared to be fully mature by age 2 with gonadosomatic index values above 8 for females and close to 1 for males. The majority of females were older, longer, and heavier than males. Bowfin in Lake Lindsay Grace had fast growth up to age 4 and higher total annual mortality than the other populations examined in this study.

Harvest is an important mortality factor for male eastern wild turkeys (Meleagris gallopavo silvestris). To effectively manage harvest and ensure quality hunting it is necessary to understand the relationship between annual survival and factors such as hunter access, season length, and bag limits. We banded 261 male wild turkeys from 2002 - 2009 and estimated survival and recovery parameters based on band recoveries from 2002 - 2012 on private lands in the pine-dominated landscape of north-central Louisiana. Hunting season length was 23 days from 2002 - 2006 and 30 days from 2007- 2012 with a 2-bird limit in all years of study. We found that survival and recovery rates varied by age class. Adult and juvenile annual survival was 0.30 (SE = 0.04) and 0.51 (SE = 0.10), whereas recovery rates were 0.28 (SE = 0.04) and 0.07 (SE = 0.02), respectively. Direct recovery rates of adults increased when season length increased to 30 days from an annual mean of 20% to 44.5%.

Changing pasture and hayfield management practices have impacted grassland songbird and northern bobwhite (Colinus virginianus) populations in the Mid-South in the past 50 years. Non-native species, such as tall fescue (Schedonorus phoenix) and orchardgrass (Dactylis glomerata), are commonly used for hay production, where they are managed in dense stands that are harvested during peak nesting periods for grassland birds. Native warm-season grasses, including switchgrass (Panicum virgatum) have been promoted for hay and biofuels production and are often touted as beneficial for wildlife. The benefits of native warm-season grasses for grassland birds and northern bobwhite are influenced by stand management.

Scientific knowledge provides an important basis for effective wildlife management decisions. Given frequent budget constraints that impact the ability of wildlife agencies to generate their own knowledge, using trained research scientists at a university is a cost-effective alternative. We describe the cooperative agreement between Mississippi Department of Wildlife, Fisheries, and Parks (MDWFP) and Mississippi State University (MSU) as a model of cost-effective partnership that blends science with management. Since 1976, our cooperation has produced 107 master of science theses, 19 doctor of philosophy dissertations, and 301 peer-reviewed publications which have contributed to the scientific literature while effectively addressing adaptive management needs of the agency. We describe the Deer Management Assistance Program as an example of the products produced through this cooperative venture.

Use of trail cameras to make population estimates of white-tailed deer (Odocoileus virginianus) has increased since an estimator was developed by Jacobson et al. (1997). We evaluated the accuracy of the camera estimator in six 81-ha enclosures with varying densities of deer replicated on two study areas. Baited camera surveys were conducted for 14 days in autumn and winter. We also tested the finding from previous studies that the probability of sighting bucks and does in photographs was equal. Finally, we conducted an open range test by comparing a camera survey to a helicopter survey. The camera estimator underestimated known populations of marked deer in the enclosures by a mean of 32.2%. The underestimates were the result of photos/marked buck being 1.9 times greater than photos/marked doe. However, cameras captured >90% of marked bucks and >84% of marked does.

Native grasses and forbs have been promoted in conservation programs to enhance habitat for northern bobwhite (Colinus virginianus). However, high seeding rates and a lack of management result in vegetative structure that is less than optimal. We implemented six management practices (November disk, March disk, March burn, March mowing, strip-herbicide application, and September burn) with a control on an unmanaged field of planted native warm-season grass in East Tennessee, 2003 - 2004, to evaluate effects on habitat for northern bobwhite. We recorded vegetation composition, vegetation structure, and biomass of invertebrate orders preferred by bobwhite broods, 2004 - 2005. Disking treatments increased coverage of bobwhite food plants and reduced planted native grass cover. Disking and burning treatments enhanced vertical cover and openness at ground level and decreased litter in the season after treatment.

We radio monitored 13 raccoons (Procyon lotor) from August 2010 through February 2012 in an agricultural region in northwest Tennessee to ascertain seasonal and gender differences in use of resting areas. Males were located 69 times and females were located 119 times. All den locations were in the ground, tree cavities, or brush piles. Male raccoons exhibited no significant difference in diurnal refugia use among seasons. Trees were used more than other resting areas during spring, summer, and fall, and were used to the same degree as ground dens during winter. Female raccoons exhibited significantly different diurnal refugia use among seasons (X2 = 16.70, P = 0.01). Ground dens represented 69% of female locations during spring, but were not used during summer when tree cavities and brush piles represented 57% and 43% of locations, respectively.

Any deviation (poaching) from hunting or fishing regulations damages natural resources and negatively impacts both consumptive and non-consumptive wildlife users. This study explored deterrents to rule-breaking rooted in normative and traditional regulatory models, and evaluated factors influencing legitimacy of regulations by poachers. Hunters and anglers in North Carolina who had broken regulations (n = 60) were asked to rate the importance of poaching deterrents including sanctions (penalties issued for breaking rules), enforcement of regulations by wildlife officers, and normative social pressure. Respondents rated the known presence of game wardens as the most effective deterrent to poaching and rated factors associated with normative pressure as the least important.

We attempted to quantify hunter use in five publicly managed mourning dove (Zenaida macroura) fields during the 2007 and 2008 dove hunting seasons on Conoho Farms (CF) in Martin County, North Carolina. Self-administered diary surveys (n=845) were mailed to every individual receiving a special hunt (SH) and point-of-sale (PS) permit during both dove hunting seasons on CF. We used the modified Tailored Design method to collect hunter effort and harvest data for each hunting season. Data were analyzed using the Kruskal-Wallis test to determine differences in hunter effort and harvest between seasons and permit types. The adjusted overall response rate for the survey was 74.7%. Only 141 (22.7%) respondents reported hunting doves at CF. Respondents reported expending 801.75 hours (¯x =4.01, SE 0.13), firing 6782 shots (¯x =33.91, SE 2.25), and harvesting 1331 doves (¯x =6.66, SE 0.36) during the 2007-2008 dove hunting seasons.

Restoring historic fire/grazing interactions and increasing the population of the black-tailed prairie dog (Cynomys ludovicianus), a keystone species, are two management priorities for North America's grasslands. To evaluate the response of prairie dogs to the fire/grazing interaction, 2-ha plots of uncolonized mixed-grass prairie directly adjacent to active prairie dog colonies on Wichita Mountains Wildlife Refuge were burned in 2009 and 2010. Longhorn cattle (Bos taurus) and American bison (Bison bison) had access to the sites during both years thus replicating historic conditions where herbivores freely chose foraging patches. Prairie dogs responded positively to the fire/grazing interaction treatments by immediately colonizing all burned areas in both years, with the strongest response occurring in 2009 when precipitation during the growing season was lowest. There was no observed attempt to colonize any unburned (control) grasslands.

Bowhunting is often considered as an option for the harvest management of white-tailed deer (Odocoileus virginianus) in suburbs, parks, and similar restrictive environments. Higher deer recovery rates by bowhunters would promote better utilization of the resource and could lessen some of the objections to bowhunting. Bowhunters have a variety of equipment choices, yet little is known of the impact of these choices on bowhunter efficacy. The objective of this study was to evaluate the deer recovery metrics of bowhunters who used compound bows or crossbows with either fixed blade broadheads (having no moving parts) or mechanical broadheads (having moving parts). Our retrospective study relied on the daily reports of bowhunters who participated in a managed hunting program at the Naval Support Facility Indian Head, at Indian Head, Maryland. All bowhunters were required to pass the International Bowhunter Education Program and an annual pre-season shooting proficiency test.

Feral swine (Sus scrofa) cause extensive damage to commercial agriculture, wildlife, natural habitats, and personal property throughout a growing number of states. There is a need to quantify the location and type of this damage in Tennessee. We surveyed four groups of agriculture and natural resource management professionals to identify how feral swine populations have dispersed across Tennessee in the last 25 years and identify what type of damage they caused. Farm Bureau County Presidents, University of Tennessee Extension Agents, Natural Resources Conservation Service District Conservationists, and Tennessee Wildlife Resources Agency Wildlife Officers were surveyed in each of the 95 Tennessee counties to identify counties inhabited by feral swine and categorize the damage they cause. According to survey respondents, feral swine have become widespread throughout Tennessee with reported populations in 89 of 95 counties.

Bowfishing may represent a substantial portion of the recreational harvest of alligator gar, but little is known about the relative efficiency of the angling method. To better understand angler effort and harvest rates, we collected data from three Trinity River bowfishing tournaments each year during 2009, 2010, and 2011 (n = 9). Harvest ranged from 2 to 30 alligator gar per tournament with 641 anglers harvesting a total of 134 fish for all years. Mean (± SE) harvest rate (fish h-1) of alligator gar for tournament participants was similar among years at 0.023 ± 0.095 in 2009, 0.018 ± 0.008 in 2010, and 0.016 ± 0.004 in 2011 (F = 0.24, df = 8, P = 0.79). Harvested alligator gar ranged from 229 to 2210 mm in total length, indicating a wide range of vulnerability to bowfishing.

White bass (Morone chrysops) are a popular sport fish throughout most of their zoogeographic distribution. We conducted a population assessment of white bass in Pool 4 of the Arkansas River. Using population metrics calculated from the assessment, responses of the white bass fishery to a 254-mm or 305-mm minimum length limit (MLL) were simulated using the Fishery Analysis and Modeling Simulator (FAMS) model. White bass ages ranged from 1-7, but 88% of white bass were less than age 5. Conditional natural mortality averaged 0.43, and total annual mortality was 54%, so exploitation was estimated to be 0.15. Implementation of a 254-mm MLL would reduce the number of fish harvested by 18%-32%, but increase the average weight of harvested fish by 21%-43%. Yield was predicted to increase or decrease by 10% depending upon natural mortality and exploitation. The portion of the cohort reaching preferred size (300 mm TL) ranged from 5% to 26%.

Most hybrid catfish are produced by fertilizing eggs from hormone-induced, strippable channel catfish (Ictalurus punctatus) females with sperm from blue catfish (I. furcatus). Water to most hatcheries is supplied from 300 to 400-m deep aquifer, yielding geothermal water of 25-30 C with low level of calcium hardness and hence supplemented with an external source of calcium. Many catfish hatchery water sources have low calcium concentrations and are supplemented with an external source of calcium. Nevertheless, failure of calcium pump or delivery system in commercial catfish hatcheries is not uncommon. This study examined 12 sequential 8-hour periods of exposure of hybrid catfish eggs to calcium-deficient waters from fertilization to hatch. Periodic exposure to calcium-deficient waters did not affect fertilization of hybrid catfish eggs.

We investigated the effects of exposing pellet-reared, advanced-fingerling largemouth bass (Micropterus salmoides) to live forage on the ability of bass to capture live forage (competitive ability). Wild and pellet-reared largemouth bass were paired in competitive trials in 75-L aquaria and offered live fathead minnows (Pimephales promelas). Prior to competitive trials, pellet-reared largemouth bass were placed into trial groups and fed fathead minnows daily for 0, 2, 4, 8, and 16 days among groups. Pellet-reared largemouth bass without exposure to live forage captured the fathead minnow in 9% of competitive events against wild fish and captured significantly fewer fathead minnows than pellet-reared largemouth bass with exposure to live forage (logistic regression; P < 0.05). Pellet-reared largemouth bass with exposure to live forage before competitions were similar to wild largemouth bass in competitive ability.

Long-term tagging studies require a tag that has high retention and does not cause significant mortality. Retention and induced mortality were determined for advanced fingerling channel catfish (Ictalurus punctatus) tagged with Carlin dangler tags. We stocked three replicate 0.10-ha ponds with 100 tagged and 150 untagged channel catfish. Mean length ± SD of fish stocked was 232 ± 20 mm (range: 179-282 mm). Mean annual tag loss was 10% and ranged from 4% to 19% among ponds. Annual survival was 9% lower for tagged (mean = 52%) than unmarked control fish (mean = 61%). Annual growth of tagged fish was 58 mm and 376 g less than that of unmarked fish. Overall, results of this study indicated that long-term tag loss of Carlin dangler tags was acceptable for most applications (i.e., 10% per year), but investigators should be aware that tagged advanced fingerling fish, with an associated adipose fin clip, may have reduced survival and growth.

Studies conducted during the last 30 years have identified benefits and adverse impacts and have documented increased frequency of fishing tournaments. This study used information provided by state fisheries management agency administrators to measure the frequency of black bass (Micropterus spp.) tournaments in southeastern states and assessed how reported changes in tournament frequency have impacted fisheries management. The average annual number of black bass tournaments reported by 14 southeastern states for 2009-2011 was 41,939, which was a 124% increase from the average annual number of tournaments for all freshwater species reported by southeastern states for 2002-2004. Despite this considerable increase, agencies reported that tournaments were generally beneficial.

Management of blue catfish (Ictalurus furcatus) fisheries has recently increased in priority for many fisheries management agencies, but little is known about managing these fisheries. Also, while large-scale surveys (i.e., national and statewide) have provided managers with baseline sociological information, localized motivations and opinions of blue catfish anglers remain unknown in most areas. A mail-out survey was conducted to quantify motivations and opinions of blue catfish anglers in an eight-county area in north-central Texas to better manage local blue catfish fisheries. Surveyed anglers were generally harvest-oriented and preferred to harvest fish <610 mm total length. They supported the current harvest regulation (305-mm minimum length limit, 25 fish/day bag) or increasing the minimum length limit but did not support a reduced bag limit or a protected slot length limit.

Reports of extensive hybridization among black bass species throughout North America as well as anecdotal information from anglers led to an investigation of the possibility of hybridization between Alabama bass (M. henshalli) and both subspecies of largemouth bass (M. salmoides salmoides and M. s. floridanus) in Alan Henry Reservoir, Texas. Fish were collected and identified by field staff and then by using genetic markers. Results suggested no hybridization had occurred between Alabama bass and largemouth bass in Alan Henry Reservoir; however, genetic markers did reveal misclassifications when identification was based on morphology.

An exploratory study was conducted on paddlefish (Polyodon spathula) anglers at Lake of the Ozarks near Warsaw, Missouri, to learn about their social and cultural aspects, such as activity involvement and place dependence in relation to travel distance. Although Lake of the Ozarks is a premier fishery in the state of Missouri, little is known about these participants. An on-site survey was completed and returned by 423 out of 595 anglers (71% response rate). Respondents were middle-aged men who lived in rural areas in Missouri, and traveled a median distance of 179.3 km (one way) to this location. The average angler started this activity at age 25.9 and had been a participant for 11.2 years. Socialization and harvest were important reasons for angling participation. Significant differences were found between proximate and distant paddlefish anglers on activity involvement and place dependence.

Despite its importance to anglers, the Arkansas River spotted bass (Micropterus punctulatus) fishery has not been intensively studied or managed. Thus, spotted bass populations in the lower nine navigation pools of the Arkansas River were assessed during 2004-2005 using nighttime boatmounted electrofishing. Across years and pools, size structure measures were within acceptable ranges for black basses (mean PSDQ = 38, range 21-56; mean PSDP = 10, range 0-19). Theoretical maximum sizes generated from growth models were not large for spotted bass (mean L∞ = 395 mm TL, range 351-429 mm total length), though populations exhibited good condition and growth. Total annual mortality estimated from catch curves averaged 49% and ranged from 43%-57% across pools. Although population metrics exhibited few longitudinal relationships within the Arkansas River, spotted bass populations compared favorably to other populations from similar impounded river systems.

Adult alewife (Alosa pseudoharengus) and blueback herring (A. aestivalis) (collectively referred to as river herring) have rarely been trapped and transported during the spawning period to restore spawning runs in southern coastal U.S. watersheds, though this is a common practice in New England. We tested the feasibility of this practice in North Carolina to develop a protocol to assist in restocking and conservation efforts. River herring were collected using pound nets in the Scuppernong River at Columbia, North Carolina, from February-April 2007. Fish were removed from pound nets, placed into an oxygenated 833-L holding tank, and transported approximately 30 min to Lake Phelps, a natural Carolina Bay lake on the Albemarle-Pamlico peninsula with an outlet to Albemarle Sound. The density of river herring in the tank was maintained < 1 fish / 3.78 L-1.

A primary responsibility of wildlife resources agencies is to determine a species' conservation status. Two widely utilized protocols for status determination are those of the International Union for the Conservation of Nature (IUCN) and NatureServe. This study compares the risk categorization for 58 species of aquatic wildlife extant in North Carolina. The IUCN and NatureServe protocols produced threat rankings that were correlated with each other but very different in terms of how they classified risk. The NatureServe protocol most often placed a species as being in a higher threat category than did the IUCN protocol. Differences mainly appeared to be due to how the protocols treat species with restricted geographic range. Resource managers should be aware of the relative performances and reasons for discrepancies of these two protocols when determining conservation status for a species.