Content tagged with "Game Species"

Assessing Long-term Coded Wire Tag Retention in Hatchery-reared Paddlefish

Science Note Vol. 8 No. 14 The Mississippi Interstate Cooperative Resource Association (MICRA) mandated that all hatchery-reared Paddlefish must be tagged with binary-coded wire tags (CWT) before stocking throughout the Mississippi River basin. Twenty-two (22) states participated in the tagging, but numerous states have expressed concern about CWT retention. This study was initiated to inform these concerns by estimating the proportion of tagged Paddlefish stocked in MDC managed ponds that retain binary coded-wire tags (CWT) after 10 years. More

Black Bass and Crappie Use of Installed Habitat Structures in Table Rock Lake, Missouri

Science Note Vol. 8 No. 12 Reservoirs are important resources utilized by thousands of freshwater anglers annually, but as these reservoirs age, their physical habitat deteriorates and fish habitat quality is reduced. In 2007, a large scale habitat improvement project began on Table Rock Lake, Missouri with the goal of supplementing existing fish habitat in this large reservoir. Over 2,000 habitat structures composed of cedar, pine, hardwoods, stumps, and rocks were installed between 2007 and 2013. SCUBA surveys were used to evaluate black bass and crappie use of the installed habitat structures to determine if use of structures varied among fish species, fish size, season, and structure type. More

Data Obtained from the Mandatory CITES Registration Provides Valuable Information on Bobcat Population

Science Note Vol. 8 No. 9 Bobcats are Missouri’s most valuable furbearer. Monitoring harvest is important for setting appropriate regulations. Bobcats were listed as an Appendix II, “look-alike CITES species” in 1977, requiring that harvested animals be registered and tagged. MDC has been registering and collecting data on all harvested bobcats since 1980. Information collected during the registration/tagging process includes: harvest date, sex, location and method of take. These data are important for monitoring population trends and reconstructing populations for more robust analysis. Tagging bobcats provides MDC staff one-on-one contact with trappers and hunters. CITES data are often used by Conservation Agents to make cases for illegal harvest. More

Effect of Eastern Red Cedar Brush on nest Abundance and Survival of Age-0 Black Bass in Bull Shoals Lake, Missouri

Technical Series Vol. 4 Recruitment of black bass Micropterus spp. in large reservoirs is often related to fluctuations in water levels, although the specific mechanism driving recruitment is not known. Eastern red cedar Juniperus virginiana brush was added to coves within Bull Shoals Lake to replicate habitat conditions present during high water events in an effort to increase numbers of nesting adult black bass and abundance of age-0 black bass. More

Monitoring Furbearer Abundance

Science Note Vol. 8 No. 6 The intent of sign stations and archer observations are to monitor trends. While not capable of determining population size, these monitoring efforts provide valuable information on population trends. Sign station indices can detect large changes in furbearer populations at low cost relative to other methods. The surveys use 36-inch diameter circles of sifted soil, set up every 0.3 miles along shoulders of gravel roads. Within each station is a scent attractant disc. Stations are set up in a day and checked the next day for presence of animal tracks. We use sign station surveys to collect trend data for 8 terrestrial furbearer species. Since 1983 we have conducted annual surveys of wildlife populations via the archer’s diary survey. Each fall, several thousand archery deer and turkey hunters keep daily sighting records for furbearers, other small game animals, deer, and turkeys. This group provides an important monitoring service and enables us to track population indices and range expansion of select terrestrial species. We use the number of sightings of each species divided by the total number of hours hunted to calculate a sighting rate. Rates are expressed as the number of sightings per 1,000 hours hunted. More

Movement, Habitat Selection, and Home Range of Largemouth Bass in Table Rock Lake, Missouri

Science Note Vol. 8 No. 11 As reservoirs age, fish habitat may decrease because of increased siltation and deterioration of structures which may affect fish populations. Over the past five years the Missouri Department of Conservation (MDC) has worked to improve reservoir fish habitat in Table Rock Lake, Missouri. Over 2,000 fish habitat structures (e.g., tree, stump, and rock piles) were distributed and geo-referenced in an attempt to improve fish habitat and angler success. Researchers then surgically implanted 70 Largemouth Bass with radio telemetry transmitters and relocated them once a month during the day and night for one year. More

Quick Draw Program Evaluation: Focus Group Results

Science Note Vol. 8 No. 13 In January 2013, four focus groups were held at the request of Wildlife Division as a part of the evaluation of several potential changes to the Quick Draw program. The evaluation also included administrative considerations and input received through hunter comments via social media and the internet, e-mail, an opinion poll, and personal contacts. In order to make the discussion as useful as possible, the majority of the time was spent discussing the three items that were under consideration for changes: the percentage of positions allocated to Quick Draw, number of times a hunter can be selected for Quick Draw, and possible changes to the registration/enrollment schedule. In addition, we wanted to provide an opportunity for hunters to voice other concerns or make additional suggestions. A total of 32 individuals participated in the focus group discussions, which were held in Kirkwood, Columbia, Sedalia, and Cape Girardeau. More