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Articles 901 - 930 of 1529
Full-Text Articles in Physical Sciences and Mathematics
Modeling Blackbird Abundance In The Prairie Pothole Region Using A Hierarchical Spatial Model, Greg M. Forcey, George M. Linz, Wayne E. Thogmartin, William J. Bleier
Modeling Blackbird Abundance In The Prairie Pothole Region Using A Hierarchical Spatial Model, Greg M. Forcey, George M. Linz, Wayne E. Thogmartin, William J. Bleier
United States Department of Agriculture Wildlife Services: Staff Publications
Blackbirds are ubiquitous members of the avian fauna in the Prairie Pothole Region. However, their abundance combined with their food habits make blackbirds significant agricultural pests on sunflower. Cost estimates for blackbird damage to sunflower in the northern Great Plains range from 4-11 million U.S. dollars per year. Because of their economic impact on agriculture, it is imperative to understand the environmental factors that influence blackbird abundance patterns. This study attempts to quantify the effects of landscape-level land use and climate patterns on blackbird abundance in the Prairie Pothole Region of the United States.
Efficacy Of Sunflower Decoy Plots For Blackbird Control And Supplemental Stopover Habitat, Heath M. Hagy, Jon Raetzman, George M. Linz, William J. Bleier
Efficacy Of Sunflower Decoy Plots For Blackbird Control And Supplemental Stopover Habitat, Heath M. Hagy, Jon Raetzman, George M. Linz, William J. Bleier
United States Department of Agriculture Wildlife Services: Staff Publications
Wildlife Conservation Sunflower Plots (WCSP) were planted and monitored during a two-year trial/research program to monitor the effect of decoy plots on blackbird use of nearby commercial sunflower and abundance of nonblackbird migratory species within the plots. In the two year evaluation period, in excess of 975 hours were spent by three researchers in the plots monitoring damage, vegetation, and avian use. We used bird numbers, vegetation characteristics, and landuse landscape variables to assess the optimal habitat conditions in and around each decoy plot for luring blackbirds and providing adequate stopover habitat for nonblackbird migrants. In 2004, wetland and shelterbelt …
Potential Predators Of An Invasive Frog (Eleutherodactylus Coqui) In Hawaiian Forests, Karen H. Beard, William C. Pitt
Potential Predators Of An Invasive Frog (Eleutherodactylus Coqui) In Hawaiian Forests, Karen H. Beard, William C. Pitt
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.
Experimental Infection Of Fox Squirrels (Sciurus Niger) With West Nile Virus, J. Jeffrey Root, Paul T. Oesterle, Nicole M. Nemeth, Kaci Klenk, Daniel H. Gould, Robert G. Mclean, Larry Clark, Jeffrey S. Hall
Experimental Infection Of Fox Squirrels (Sciurus Niger) With West Nile Virus, J. Jeffrey Root, Paul T. Oesterle, Nicole M. Nemeth, Kaci Klenk, Daniel H. Gould, Robert G. Mclean, Larry Clark, Jeffrey S. Hall
United States Department of Agriculture Wildlife Services: Staff Publications
Tree squirrels (Sciurus spp.) have exhibited high seroprevalence rates, suggesting that they are commonly exposed to West Nile virus (WNV). Many characteristics of WNV infections in tree squirrels, such as the durations and levels of viremia, remain unknown. To better understand WNV infections in fox squirrels (S. niger), we subcutaneously inoculated fourteen fox squirrels with WNV. Peak viremias ranged from 104.00 plaque-forming units (PFU)/mL of serum on day 2 post-infection (DPI) to 104.98 PFU/mL on 3 DPI, although viremias varied between individuals. Oral secretions of some fox squirrels were positive for WNV viral RNA, occasionally …
Effect Of Method Of Delivering Nicarbazin To Mallards On Plasma 4,4′-Dinitrocarbanilide Levels And Reproduction, C. A. Yoder, J. K. Graham, L. A. Miller, K. S. Bynum, J. J. Johnston, M. J. Goodall
Effect Of Method Of Delivering Nicarbazin To Mallards On Plasma 4,4′-Dinitrocarbanilide Levels And Reproduction, C. A. Yoder, J. K. Graham, L. A. Miller, K. S. Bynum, J. J. Johnston, M. J. Goodall
United States Department of Agriculture Wildlife Services: Staff Publications
Nicarbazin (NCZ), a coccidiostat used in the poultry industry, has been developed as a contraceptive for resident Canada geese. We tested the efficacy of NCZ as a contraceptive using mallards (Anas platyrhynchos) as a model for Canada geese. Nicarbazin-treated corn was fed ad libitum for 14 d at 0, 750, 1,000, or 1,500 ppm. Plasma and egg levels of 4,4′-dinitrocarbanilide (DNC), the active anticoccidial component of NCZ, differed among treatment groups in a dose-response relationship, but plasma levels did not differ between sexes. Nicarbazin caused a decrease in egg weight, but there was no effect of NCZ on …
Evaluation Of Nicarbazin As A Potential Waterfowl Contraceptive Using Mallards As A Model, C. A. Yoder, J. K. Graham, L. A. Miller, K. S. Bynum, J. J. Johnston, M. J. Goodall
Evaluation Of Nicarbazin As A Potential Waterfowl Contraceptive Using Mallards As A Model, C. A. Yoder, J. K. Graham, L. A. Miller, K. S. Bynum, J. J. Johnston, M. J. Goodall
United States Department of Agriculture Wildlife Services: Staff Publications
Contraception may provide a useful nonlethal management tool to reduce wild bird populations. We tested the efficacy of nicarbazin (NCZ) as a contraceptive for waterfowl and assessed health effects of NCZ, using domestic mallards (Anas platyrhynchos) as a model for Canada geese (Branta canadensis). Mallards were given gelatin capsules containing 0, 8.5, 17.0, or 33.75 mg of NCZ/kg of BW perorally once daily for 14 d. Fecal 4,4′- dinitrocarbanilide (DNC) and fluorescein were evaluated as potential markers of plasma and egg DNC levels. Plasma, egg, and fecal DNC levels differed among treatment groups in a dose …
Monitoring Invasive Mammalian Predator Populations Sharing Habitat With The Critically Endangered Puerto Rican Parrot Amazona Vittata, Richard M. Engeman, Desley Whisson, Jessica Quinn, Felipe Cano, Pedro Quiñones, Thomas H. White
Monitoring Invasive Mammalian Predator Populations Sharing Habitat With The Critically Endangered Puerto Rican Parrot Amazona Vittata, Richard M. Engeman, Desley Whisson, Jessica Quinn, Felipe Cano, Pedro Quiñones, Thomas H. White
United States Department of Agriculture Wildlife Services: Staff Publications
Critically Endangered Puerto Rican parrots Amazona vittata are one of the rarest birds in the world. Several exotic mammal species capable of preying on Puerto Rican parrots cohabit the Caribbean National Forest with the only wild population of these parrots. We used tracking plates, monitoring blocks and trapping to index black rats, small Indian mongooses and feral cats in parrot habitat and in public-use areas in the same habitat type. We had high trap success for black rats at all sites (42% of all sites combined), among the highest reported in the world. Rat response to monitoring (nontoxic bait) blocks …
Red-Winged Blackbird (Agelaius Phoeniceus) Reproduction In North Dakota, Rachel M. Bush, Mark E. Clark, Wendy L. Read, George M. Linz
Red-Winged Blackbird (Agelaius Phoeniceus) Reproduction In North Dakota, Rachel M. Bush, Mark E. Clark, Wendy L. Read, George M. Linz
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.
Determination Of Diphacinone Residues In Hawaiian Invertebrates, Thomas M. Primus, Dennis J. Kohler, John J. Johnston
Determination Of Diphacinone Residues In Hawaiian Invertebrates, Thomas M. Primus, Dennis J. Kohler, John J. Johnston
United States Department of Agriculture Wildlife Services: Staff Publications
A reversed-phase ion-pair liquid chromatographic analysis combined with a solid-phase extraction clean-up method is used to assess the quantity of diphacinone residue found in invertebrates. Three invertebrate species are exposed to commercially available diphacinone-fortified bait used for rat control. The invertebrate samples are collected, frozen, and shipped to the laboratory. The samples are homogenized after cryogenic freezing. A portion of the homogenized samples are extracted with acidified chloroform–acetone, followed by cleanup with a silica solid-phase extraction column. Diphacinone is detected by UV absorption at 325 nm after separation by the chromatographic system. The method limit of detection (MLOD) for snail …
How To Keep Beavers From Plugging Culverts, Dale L. Nolte, Dale H. Arner, John Paulson, Jeanne C. Jones, Andy Trent
How To Keep Beavers From Plugging Culverts, Dale L. Nolte, Dale H. Arner, John Paulson, Jeanne C. Jones, Andy Trent
United States Department of Agriculture Wildlife Services: Staff Publications
Beaver populations increased dramatically during the last half century. Beavers and beaver dams now are found on rivers, streams, and creeks across the country. Although beavers dam streams for their own benefit, the ponds create habitats for birds, fish, and other wildlife. Unfortunately, as road engineers and maintenance crews know, beavers also plug culverts. When culverts are plugged (figure 1), roads can be washed away by flooding. Removing the beavers’ dams usually requires heavy equipment, which is costly. The U.S. Department of Agriculture (USDA) Forest Service Missoula Technology and Development Center (MTDC) was asked to investigate methods to solve the …
Faa Names "Excellence In Aviation Research Award" Winners
Faa Names "Excellence In Aviation Research Award" Winners
United States Department of Agriculture Wildlife Services: Staff Publications
The Federal Aviation Administration is presenting its 2005 Excellence in Aviation Research Awards to Richard Dolbeer, Ph.D., Coordinator of the Aviation Safety and Assistance Program for the U.S. Department of Agriculture, and Colin Drury, Ph.D., University of Buffalo Distinguished Professor and Chair of the Department of Industrial Engineering at the university, for their work in airport wildlife hazard mitigation and aviation maintenance human factors, respectively.
A Visual Method For Indexing Muskrat Populations, Richard M. Engeman, Desley A. Whisson
A Visual Method For Indexing Muskrat Populations, Richard M. Engeman, Desley A. Whisson
United States Department of Agriculture Wildlife Services: Staff Publications
The native range for muskrats (Ondatru zibethicus) includes much of North America, but they also have been introduced beyond their native range, including into the Fall River, California, where they have come into conflict with human interests. An easily applied method to assess their abundance is an important need for their management. We developed a muskrat visual index (MVI) to provide the information necessary to address this need. Observations were made at randomly located sites along the river. The number of muskrats observed during a 45 min period was recorded during the late afternoon peak activity time at each …
Genetic And Spatial Structure Within A Swift Fox Population, Ann M. Kitchen, Eric M. Gese, Lisette P. Waits, Seija M. Karki, Edward R. Schauster
Genetic And Spatial Structure Within A Swift Fox Population, Ann M. Kitchen, Eric M. Gese, Lisette P. Waits, Seija M. Karki, Edward R. Schauster
United States Department of Agriculture Wildlife Services: Staff Publications
1. We incorporated spatial data on swift foxes (Vulpes velox) with genetic analysis to assess the influence of relatedness between individuals on their social and spatial ecology. We recorded the space use patterns of 188 radio-collared swift foxes in southeastern Colorado from January 1997 to December 2000. One hundred and sixty-seven foxes were also genotyped at 11 microsatellite DNA loci and the degree of relatedness between individuals was estimated. 2. We described the genetic structure of the population by examining the relatedness of neighbors and the relationship between the spatial and genetic distance of all individuals. We found …
Normal Hematologic And Biochemical Values For Prelaying Greater Sage Grouse (Centrocercus Urophasianus) And Their Influence On Chick Survival, Mike R. Dunbar, Michael A. Gregg, John A. Crawford, Mark R. Giordano, Susan J. Tornquist
Normal Hematologic And Biochemical Values For Prelaying Greater Sage Grouse (Centrocercus Urophasianus) And Their Influence On Chick Survival, Mike R. Dunbar, Michael A. Gregg, John A. Crawford, Mark R. Giordano, Susan J. Tornquist
United States Department of Agriculture Wildlife Services: Staff Publications
Declines in greater sage grouse (Centrocercus urophasianus) productivity and population numbers throughout their range demand a better understanding of how nutrition influences sage grouse populations. During March and April 1999–2001, blood samples were collected from 158 female (73 adult, 85 yearling), free-ranging, prelaying, greater sage grouse from an area in northwestern Nevada, USA, and southeastern Oregon, USA. These blood samples were evaluated to establish normal blood values for sage grouse and ascertain if certain blood parameters, as indices of nutrition, are useful for predicting if sage grouse hens would raise at least one chick to 1 August. Results of logistic …
Lines Of Defense: Coping With Predators In The Rocky Mountain Region, Eric M. Gese, Sean P. Keenan, Ann M. Kitchen
Lines Of Defense: Coping With Predators In The Rocky Mountain Region, Eric M. Gese, Sean P. Keenan, Ann M. Kitchen
United States Department of Agriculture Wildlife Services: Staff Publications
This sourcebook provides information useful to producers of all types of livestock in the Rocky Mountain States. The applicability of this information to specific livestock operations will depend upon the characteristics of the operation and the willingness and ability of producers to experiment with various techniques and procedures. Most producers will have experience with some methods of preventing losses to predators. Information in this booklet may provide new insights or sources of information for learning more about methods of depredation management. The booklet also includes information about techniques others are using, and provides opportunities for producers to contact people willing …
Aerial Mass Color - Marking Of Blackbird Roosts, H. Jeffrey Homan, George M. Linz
Aerial Mass Color - Marking Of Blackbird Roosts, H. Jeffrey Homan, George M. Linz
United States Department of Agriculture Wildlife Services: Staff Publications
We use mass color-marhng to track the local and regional movements of large roosts of blackbirds (Icteridae). Several marhngs have been done by National Wildlife Research Center scientists, including marhng of spring roosts in northeastern Missouri and eastern South Dakota (Knittle et al. 1987, Knittle et al. 1996, Homan et al. 2004), fall roosts in central North Dakota (Linz et al. 1991, Homan et al. 2005), and winter roosts in the southern U.S. (Harsch 1995). Here, we provide a description of the process and methodology of aerial mass color-marhng with fluorescent particles.
Capsicum Oleoresin: Development Of An In-Soil Repellent For Pocket Gophers, Ray T. Sterner, Stephen A. Shumacke, Stanley E. Gaddis, Jean B. Bourassa
Capsicum Oleoresin: Development Of An In-Soil Repellent For Pocket Gophers, Ray T. Sterner, Stephen A. Shumacke, Stanley E. Gaddis, Jean B. Bourassa
United States Department of Agriculture Wildlife Services: Staff Publications
A pre- and post-monitoring study was conducted of the potential use of capsicum oleoresin as an in-soil repellent for northern pocket gophers (Thomomys talpoides). Pocket gophers were captured in irrigated alfalfa (Medicago sativa L), affixed with radio transmitters, and monitored daily for location. Six plots (4.87 × 4.87m) each were randomly assigned to capsicum oleoresin and soybean oil treatments; these were set up based upon the centers of initial core areas of gophers. Mean (±SD) volumes of capsicum oleoresin and water and soybean oil and water mixtures (10 + 90 by volume) dispensed onto plots equaled 178.5 (±4.7) and 175.7 …
Characterizing 3-Chloro-P-Toluidine Hydrochloride On Rough-Hulled Rice And Ethyl-Cellulose-Coated Rice Baits Using High-Performance Liquid Chromatography, Randal S. Stahl, Carol Furcowlow, Jerome C. Hurley, John J. Johnston
Characterizing 3-Chloro-P-Toluidine Hydrochloride On Rough-Hulled Rice And Ethyl-Cellulose-Coated Rice Baits Using High-Performance Liquid Chromatography, Randal S. Stahl, Carol Furcowlow, Jerome C. Hurley, John J. Johnston
United States Department of Agriculture Wildlife Services: Staff Publications
Methods are developed to extract and quantitate the avicide 3-chloro-p-toluidine hydrochloride (CPT HCI) from rough-hulled rice and ethyl-cellulose-coated rice baits using high-performance liquid chromatography. The mobile phase used in the ethyl-cellulose-coated rice matrix method is an acetonitrile(ACN)-phosphate buffer (60:40) at pH 8, and the rough-hulled rice matrix method uses an ACN-phosphate (70:30) buffer at pH 2. Increased retention time is observed for CPT HCI at the higher pH. The two methods have been useful in characterizing different bait formulations in an ongoing pesticide formulation improvement program.
Effectiveness Of A Motion-Activated Laser Hazing Systemfor Repelling Captive Canada Geese, Scott J. Werner, Larry Clark
Effectiveness Of A Motion-Activated Laser Hazing Systemfor Repelling Captive Canada Geese, Scott J. Werner, Larry Clark
United States Department of Agriculture Wildlife Services: Staff Publications
Effective management techniques are needed to disperse Canada geese (Branta canadensis) and reduce the human–wildlife conflicts associated with high population densities. We evaluated the effectiveness of a motion-activated laser hazing system for repelling captive Canada geese. The system decreased occupancy of 8 pairs of geese on the treated subplot by 83% during habituation trials. When an additional pair of geese were added to the experiment, occupancy of the treated subplot decreased .92% during each of the 20 nights of the extended habituation test. Avoidance (conditioned during the test) remained ,80% of pretreatment levels during the 2 days immediately following the …
A Test Of Targeted And Passive Capture Of Australian Elapids With A Brown Tree Snake Trap, Ian D. Temby, Richard M. Engeman
A Test Of Targeted And Passive Capture Of Australian Elapids With A Brown Tree Snake Trap, Ian D. Temby, Richard M. Engeman
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.
Evaluation And Significance Of Tetracycline Stability In Rabies Vaccine Baits , J. J. Johnston, T. M. Primus, T. Buettgenbach, C. A. Furcolow, M. J. Goodall, D. Slate, R. B. Chipman, J. L. Snow, T. J. Deliberto
Evaluation And Significance Of Tetracycline Stability In Rabies Vaccine Baits , J. J. Johnston, T. M. Primus, T. Buettgenbach, C. A. Furcolow, M. J. Goodall, D. Slate, R. B. Chipman, J. L. Snow, T. J. Deliberto
United States Department of Agriculture Wildlife Services: Staff Publications
Tetracycline is widely used as a biomarker for bait consumption by wildlife; tetracycline is incorporated into bones and teeth and can be detected by fluorescence microscopy several weeks postconsumption. During 2003, the United States Department of Agriculture distributed more than 10 million tetracycline-containing rabies-vaccine baits to control the spread of wildlife vectored rabies to humans, pets, and livestock. To estimate the percentage of target species consuming the baits, raccoons and skunks were collected in baited areas and teeth were analyzed for the presence of the biomarker. Several incidents of low biomarker detection rates prompted an investigation of the stability of …
Iguana Iguana (Green Iguana). Predation., Richard M. Engeman, Elaine M. Sweet, Henry T. Smith
Iguana Iguana (Green Iguana). Predation., Richard M. Engeman, Elaine M. Sweet, Henry T. Smith
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.
Wildlife Hazard Management At Airports: A Manual For Airport Personnel, Edward C. Cleary, Richard A. Dolbeer
Wildlife Hazard Management At Airports: A Manual For Airport Personnel, Edward C. Cleary, Richard A. Dolbeer
United States Department of Agriculture Wildlife Services: Staff Publications
The Federal Aviation Administration, in cooperation with the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, produced the second edition of this manual. The first edition was published December 1999. The U.S. Departments of Transportation and Agriculture prohibit discrimination in all their programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, or marital or family status (not all prohibited bases apply to all programs). Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact one of the …
Dramatic Reduction In Predation On Marine Turtle Nests Through Improved Predator Monitoring And Management, Richard M. Engeman, R. Erik Martin, Henry T. Smith, John Woolard, Carrie K. Crady, Stephanie A. Shwiff, Bernice Constantin, Margo Stahl, John Griner
Dramatic Reduction In Predation On Marine Turtle Nests Through Improved Predator Monitoring And Management, Richard M. Engeman, R. Erik Martin, Henry T. Smith, John Woolard, Carrie K. Crady, Stephanie A. Shwiff, Bernice Constantin, Margo Stahl, John Griner
United States Department of Agriculture Wildlife Services: Staff Publications
We describe improvements to monitoring/ indexing methodology for predators of marine turtle nests on the east coast of Florida, and the resulting marine turtle conservation implications from integrating the methodology into predator management. A strip transect from dune line to the shore improved an already successful design for monitoring raccoons, and was also sensitive for armadillos. The data were integrated into predator management operations to effectively and efficiently remove the species responsible for turtle nest predation. Tracking plot data also served to validate predator patterns of behavior relative to turtle nesting and improve prospects for preventive predator management strategies. Perhaps …
Preliminary Serologic Survey Of Selected Diseases And Movements Of Feral Swine In Texas, A. Christy Wyckoff, Scott E. Henke, Tyler Campbell, David G. Hewitt, Kurt C. Vercauteren
Preliminary Serologic Survey Of Selected Diseases And Movements Of Feral Swine In Texas, A. Christy Wyckoff, Scott E. Henke, Tyler Campbell, David G. Hewitt, Kurt C. Vercauteren
United States Department of Agriculture Wildlife Services: Staff Publications
Feral swine (Sus scrofa) populations occur throughout eastern, central, and southern Texas, and their populations appear to be increasing. Despite their abundance and wide distribution, little is known about their range and interaction with domestic animals. In the last decade the national pork production industry has enforced an eradication program for economically detrimental swine diseases such as pseudorabies and brucellosis. It is hypothesized that feral hogs can be reservoirs that could reintroduce diseases to disease-free domestic swine herds. The objectives of this on-going project are to determine the prevalence of selected swine diseases that exist within feral hog …
Oral Rabies Vaccination—A Progress Report, Dennis Slate, Charles Rupprecht, Mike Dunbar, Robert Mclean
Oral Rabies Vaccination—A Progress Report, Dennis Slate, Charles Rupprecht, Mike Dunbar, Robert Mclean
United States Department of Agriculture Wildlife Services: Staff Publications
Oral rabies vaccination (ORV) targeting specific wild Carnivora species has emerged as an integral adjunct to conventional rabies control strategies to protect humans and domestic animals. ORV has been applied with progress toward eliminating rabies in red foxes (Vulpes vulpes) in western Europe and southern Ontario, Canada. Beginning in the 1990’s, coordinated ORV was implemented in Texas to contain and eliminate variants of rabies virus in the gray fox (Urocyon cinereoargenteus ) and coyote (Canis latrans ) and in several eastern U.S. States with the goal of preventing spread of raccoon (Procyon lotor ) rabies. …
Evaluation Of Optimized Variable Area Transect Sampling Using Totally Enumerated Field Data Sets, Richard M. Engeman, Ryan M. Nielson, Robert T. Sugihara
Evaluation Of Optimized Variable Area Transect Sampling Using Totally Enumerated Field Data Sets, Richard M. Engeman, Ryan M. Nielson, Robert T. Sugihara
United States Department of Agriculture Wildlife Services: Staff Publications
Plotless density estimators (PDEs) can be efficient alternatives to quadrat sampling for estimating the density of stationary objects. Variable area transect (VAT) sampling had been identified, and optimized relative to effort, in previous Monte Carlo simulated population studies as a low-labor field method that demonstrated superior estimation properties among many PDEs considered. However, natural populations tend to be much more complex and less predictable in spatial distribution than computer generated populations. Therefore, we carried out a Monte Carlo simulation study that used 17 fully enumerated field populations rather than simulated populations. These natural populations represented a variety of population densities …
Comparison Of Nicarbazin Absorption In Chickens, Mallards, And Canada Geese, C. A. Yoder, L. A. Miller, K. S. Bynum
Comparison Of Nicarbazin Absorption In Chickens, Mallards, And Canada Geese, C. A. Yoder, L. A. Miller, K. S. Bynum
United States Department of Agriculture Wildlife Services: Staff Publications
Nicarbazin (NCZ), a coccidiostat commonly used in the poultry industry, causes reduced hatchability and egg quality in layer hens at a concentration of 125 ppm (8.4 mg/kg) in the feed. Although this effect is undesirable in the poultry industry, NCZ could provide a useful wildlife contraception tool for waterfowl, particularly urban geese. We tested the absorption of NCZ in chickens (Gallus gallus), mallards (Anas platyrhynchos), and Canada geese (Branta canadensis) gavaged with 8.4 mg of NCZ/kg per bird each day for 8 d. Plasma levels of 4,4'-dinitrocarbanilide (DNC) differed significantly among species. Peak plasma DNC levels were 2.87 f 0.15 …
Chamaeleo Gracilis (Graceful Chameleon). Reproduction In Florida., Richard M. Engeman, Desta Hansen, Henry T. Smith
Chamaeleo Gracilis (Graceful Chameleon). Reproduction In Florida., Richard M. Engeman, Desta Hansen, Henry T. Smith
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.
Leiocephalus Carinatus Armol'ri (Northern Curlytailed Lizard). Cannibalism., Christopher L. Dean, Richard M. Engeman, Henry T. Smith, Walter E. Meshaka Jr.
Leiocephalus Carinatus Armol'ri (Northern Curlytailed Lizard). Cannibalism., Christopher L. Dean, Richard M. Engeman, Henry T. Smith, Walter E. Meshaka Jr.
United States Department of Agriculture Wildlife Services: Staff Publications
No abstract provided.