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... By using a large cage in the field and a system of marking, the flight activities of 36 females and 49 males of the European chafer were followed during June and July, 1954. It was found that the beetles made one to 11 flights during their life span with males averaging five flights and females 4.5. More males made eight to 11 flights than did females, and males made more flights on consecutive ev ...
Alhagi maurorum; Eurygaster integriceps; body weight; cages; diet; insects; laboratory experimentation; lipid content; mortality; wheat; young adults; Iran
Abstract:
... Experiments are described in which young adult Eurygaster integriceps were kept in cages on various diets including dry wheat ears, ears in the stage of “milky ripeness”, green camel-thorn (Alhagi camelorum) and water in various combinations. The sufficiency of the various diets was compared by estimating the mortality, change in live weight and final fat content of the insects, and by the extent ...
... The effect of isolation at 25°C for 2 weeks on subsequent resistance to low temperature has been studied in DBA/2Sp, MAf/Sp, and MA/MySp mice. Results show that in all cases the survival of these animals at 4° and —3°C increases markedly, as compared with corresponding controls which were kept 10 to 16 to a cage before being exposed to low temperature. Young males, averaging 8.6 weeks old, showed ...
... Three herbaceous species prevalent in the oak forest of southern Wisconsin, Aralia nudicaulis, Parthenocissus vitacea, and Desmodium glutinosum, were studied to determine the effect of light on canopy height. In all three species canopy height responded to changes in light intensity either as reduced by the use of aluminum cages or as increased by clipping the surroundings vegetation. Light is app ...
... The attraction of houseflies (Musca domestica L.) to surfaces was investigated by repeated counting of flies on samples of materials. The materials tested were mainly such as ordinarily occur in stables. The observations were made partly in a big cage in the laboratory and partly in a stable. The mechanism of attraction to some surfaces was analyzed by counting the number of flies arriving per tim ...
... Pairs of male, hybrid mice sharing a .03 ml daily water ration lost significantly less weight and survived significantly longer if permitted physical contact in the cage than if separated by a wire screen. Physical contact prolonged survival even when the analysis was restricted to the possible victims of cannibalization. Although allowed to consume the full water ration on each day, additional mi ...
... During 1965 many wild birds were examined for the lesions of “scaly leg” disease, caused by mites of the genus Cnemidocoptes. Mite infestation was found in redwinged blackbirds (Agelaius phocnicus), common grackles (Quiscalus versicolor), cowbirds (Molothrus ater) and in two new hosts for the mite, a black-capped chickadee (Parus atricapillus) and a crested flycatcher (Myiarchus crinitus). The mit ...
Peromyscus maniculatus; adults; aggression; animals; cages; energy; field experimentation; home range; immigration; juveniles; laboratory experimentation; males; population size; seasonal variation
Abstract:
... Sadleir (1965) proposes that seasonal changes in the survival of juvenile deermice are determined by seasonal changes in the aggressiveness of the adult population. The purpose of the study is to examine some of the consequences of Sadleir's hypothesis experimentally. Laboratory studies confirmed Sadleir's observations on seasonal changes in the aggressiveness of male deermice. Similarly, in the l ...
... The caging, feeding and handling of four unusual laboratory hystricomorph rodents is described. These rodents are: the chinchilla (Chinchilla laniger), the agouti (Dasyprocta aguti), the acouchi (Myoprocta pratti), and the African porcupine (Hystrix cristatd). The animals were kept for study of their reproduction and some details of this are given. ...
Mus musculus; adrenal glands; adults; aggression; cages; chlorpromazine; diet; females; infants; males; mice; population growth; population size; reproduction; sex ratio; survival rate; thymus gland
Abstract:
... Three confined, freely growing populations of wild house mice (Mus musculus) were studies to determine possible functions of aggressive behavior in regulating population size. Effects of a tranquilizer, chlorpromazine, on aggression and population parameters were measured. In singly caged pairs of mice chlorpromazine, mixed with the food at a rate of 0.75 mg/g food, significantly increased the num ...
... The persistence of cutaneous lesions of avian pox virus infection in a yellow-shafted flicker (Colaptes auratus) over a period of 13 months is described. Extensive transmission experiments revealed strict host specificity for the. flicker virus. Flicker-to-flicker transmission was achieved, both by inoculation and by cage contact. All attempts to isolate the virus were unsuccessful. The diagnosis ...
Ctenicera aeripennis destructor; cages; cow manure; eggs; field capacity; fields; oviposition; pastures; soil cracks; soil water; texture; water content; wilting
Abstract:
... Soil moisture, texture, cracks and compaction all influenced the ovipositional behavior of Ctenicera destructor. In oviposition choice-chambers, most eggs were laid in soil with a range of moisture content about halfway between the field capacity and the permanent wilting percentage. In cylinders of soil, beetles usually burrowed to reach moist soil before ovipositing, but laid close to the surfac ...
... A system of caging monkeys is described in which cages, constructed of aluminium alloy, are suspended over long trays. Methods of mechanical handling and washing are described as well as a means for making the cages intercommunicating. ...
... The species composition and standing crop of the algal epiphytes on the walls of experimental cages in a small lake were greatly altered following the emergence of frog tadpoles from eggs laid in the cages. The results support the hypothesis that tadpoles may be a major cause of the massive spring reduction in standing crop of filamentous green algae in the lake. ...
... To determine how a filter cap affects the heat and moisture build-up in a mouse cage, and how that build-up is affected by ambient conditions of temperature and relative humidity, 50 adult female mice were housed 10 per cage in polycarbonate cages, which were covered with a fibrous filter and sealed with a neoprene gasket and hold-down rod. The cages were placed in a chamber which controlled ambie ...
Anolis limifrons; cages; canopy; grasslands; habitat preferences; lizards; water content
Abstract:
... The distribution of a forest—dwelling, iguanid lizard, Anolis limifrons, relative to overhead structure was studied in a screened cage with simulated canopy. The lizards did not distribute themselves within the cage relative to overhead configuration per se but to some secondary factor. Simultaneous measurements of water loss and activity were made on aA. limifrons and compared with those made on ...
... A method is given for the calculation of the area of animal accommodation needed to produce a given output of small laboratory animals. This method depends on determining the number of cages needed according to productivity, the age of animals at time of use, the proportion of animals not suitable for use, and the stocking density of the growing stock for the output needed. The area needed to hold ...
restraint of animals; wild animals; cages; rodents
Abstract:
... Breeding, handling and cleaning methods for wild house mice (Mus musculus) are described. In the absence of measures of efficiency in the literature for wild rodents in general, measures of breeding performance and of time needed for handling and cleaning are proposed; figures for these measures are given for the cage, chute and methods here described in reference to wild mice. ...
... A simple method for the selection of Chinese hamsters (Cricetulus griseus) that will breed in monogamous pairs is discussed. The establishment of a small colony of non-aggressive Chinese hamsters that reproduce satisfactorily in conventional cages under normal animal-house conditions is described. The method of management and the frequent handling of the animals have contributed to the successful ...