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Full-Text Articles in Animal Sciences
Anatomical And Behavioral Aspects Of Killing And Feeding By The Least Weasel, Mustela Nivalis L., Gary A. Heidt
Anatomical And Behavioral Aspects Of Killing And Feeding By The Least Weasel, Mustela Nivalis L., Gary A. Heidt
Journal of the Arkansas Academy of Science
The least weasel (Mustela nivalis) is a remarkably well adapted predator of mice and other small animals. Each kill is rather stereotyped, in that the weasel grabs the prey by the nape of the neck and bites through the base of the skull and/or throat, using its lithe body to "wrap up" and hold the prey. The least weasel will kill mice successively until it is too exhausted physically to kill more. Mice are always eaten from the head posteriorly until completely consumed.
Herpetofauna Of Sylamore Ranger District, Ozark National Forest, Arkansas: Preliminary Report, John P. Schuier, James W. Dickson, Michael J. Harvey
Herpetofauna Of Sylamore Ranger District, Ozark National Forest, Arkansas: Preliminary Report, John P. Schuier, James W. Dickson, Michael J. Harvey
Journal of the Arkansas Academy of Science
A survey of the amphibians and reptiles of the Sylamore Ranger District, Ozark National Forest, Arkansas, was conducted from May 1969 through May 1972. The district is composed of 170,000 acres and includes parts of Stone, Baxter, Marion, and Searcy Counties. A total of 533 specimens was collected during the study. An additional 72 specimens in the collections of Memphis State University and Arkansas State University were examined. Forty-nine species were recorded from the study area. These consisted of 8 salamanders, 12 frogs and toads, 4 turtles, 6 lizards, and 19 snakes. Two species collected during the study, Scaphiopus holbrooki …
Trypanosoma Lewisi Kent (Protozoa: Mastigophora): Ultrastructure And Theory Of Locomotion, Christine Wen Chan, David A. Becker
Trypanosoma Lewisi Kent (Protozoa: Mastigophora): Ultrastructure And Theory Of Locomotion, Christine Wen Chan, David A. Becker
Journal of the Arkansas Academy of Science
Trypanosoma lewisi Kent is a nonpathogenic hemoflagellate of rats (Rattus spp.). After briefly reviewing its infrastructure, the writers postulate that inside the flagellum the change in shape of kinetosomal plate 1 may cause one of the central microtubules and the helical-like structure to contribute to flagellar movement. The energy to run this system may be transferred from the kinetoplast with its associated mitochondrion.
Some Physiochemical Parameters And Phytoplankton Standing Crop In Four Northeast Arkansas Commercial Fish Ponds, Haldor Marvin Wilkes, John K. Beadles
Some Physiochemical Parameters And Phytoplankton Standing Crop In Four Northeast Arkansas Commercial Fish Ponds, Haldor Marvin Wilkes, John K. Beadles
Journal of the Arkansas Academy of Science
Physicochemical conditions and chlorophyll a standing crop were studied from July 1970 through June 1971 in four commercial catfish ponds at the Arkansas State University Experiment Farm near Walcott, Greene County, Arkansas. Determinations of dissolved oxygen, free carbon dioxide, total alkalinity, temperature, pH, transparency, and chlorophyll a standing crop were made at two-week intervals except during fish harvesting operations. One diurnal measurement of dissolved oxygen, free carbon dioxide, and temperature was conducted 25-26 June 1971. Increased oxygen concentrations coincided with increased chlorophyll α concentrations. Free carbon dioxide and chlorophyll α values varied inversely throughout the study. Diurnal concentrations of free …
Failure To Establish Feral Coturnix Quail Populations In Arkansas In The Late 1950'S, Douglas A. James
Failure To Establish Feral Coturnix Quail Populations In Arkansas In The Late 1950'S, Douglas A. James
Journal of the Arkansas Academy of Science
Although Coturnix introductions failed in the late 1950's, it was learned in Arkansas that birds survived longest after autumn releases especially where fallow fields were numerous, that Coturnix favored grasslands whereas the bobwhite preferred shrublands, and that Coturnix occurred singly, pairing only in the breeding season.
Histological Study Of Liver On Channel Catfish, Ictalurus Punctatus, Leland F. Morgans
Histological Study Of Liver On Channel Catfish, Ictalurus Punctatus, Leland F. Morgans
Journal of the Arkansas Academy of Science
Histologically the liver of the channel catfish, Ictalurus punctatus, was found to consist of many lobules. Though not surrounded by a connective tissue sheath as they are in some animals, the lobules were discernable because all the hepatic cells in a particular area radiated from a central vein. Portal triads were scattered throughout the liver. The lobule tissue consisted of radiating cords of cells alternating with sinusoids. Glycogen was condensed into large vacuoles within these cells. Pancreatic tissue was found in the liver, always surrounding a capillary or venule. Morphologically the pancreatic cells were exocrine. Functionally, however, they may be …
Bioclimatic Chambers For Poultry Research: Design And Preliminary Results Of Testing, T.R.C Rokeby, G. S. Nelson, G. C. Harris Jr.
Bioclimatic Chambers For Poultry Research: Design And Preliminary Results Of Testing, T.R.C Rokeby, G. S. Nelson, G. C. Harris Jr.
Journal of the Arkansas Academy of Science
The 12 new environmental chambers for poultry research recently completed at the University of Arkansas feature solid state electronic systems to control dry bulb temperature and dew point of the chamber air. Dry bulb temperature is controlled by reheating previously cooled and dehumidified air by an electric heater installed in each supply air duct. Solid state controls proportion the flow of electricity to the heater to match the demand. The system is arranged to maintain constant temperature on a diurnal temperature cycle. A solid state time-proportioning control maintains a preselected dew point in each chamber. The control operates a solenoid …
Checklist Of Spiders Collected In Mississippi Compared With Preliminary Study Of Arkansas Spiders, Peggy Rae Dorris
Checklist Of Spiders Collected In Mississippi Compared With Preliminary Study Of Arkansas Spiders, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
This paper presents a comparative list of spiders collected in the 82 counties of Mississippi and in a random sampling of the spiders of Arkansas. The Mississippi list includes 26 families with 263 species, whereas the Arkansas collection includes 24 families with 206 species. Various methods of collecting were used in an effort to sample all populations and to contribute to knowledge of the taxonomy both Mississippi and Arkansas.