Cage Temperature Research Articles

Maintenance of a snake colony for the purpose of venom extraction

Observations on the maintenance of a snake colony designed for venom collection are presented. The importance of cage temperature and construction, as well as methods of snake handling are described in detail. The authors' method for obtaining coral snake venom, venom extraction procedures, apparatus and concepts on proper feeding are included. In addition, techniques for shipping and isolation of newly acquired snakes, with a discussion on detection and prevention of disease are presented.

Bearing Cage Follower-Platform for Bearing Studies

A separately driven shaft was located facing an operating test bearing, with the centerlines of the shaft and the bearing collinear. The shaft speed was synchronized with that of the bearing cage. Thus lead wires from cage-mounted transducers could be brought to signal telemetering systems for remote readout. The shaft speed synchronization with the cage was obtained by reflecting light signals off the cage side wall onto three photocells, which signals were amplified to provide 3-phase power to drive the shaft motor. The system is described in detail. An example of the system used to measure inner race and cage temperatures of a ball bearing at speeds to 15 000 rpm is given.

Voraussetzungen für eine Laborzucht der echten Möhrenfliege,Psila rosae Fabr.

In this paper a method for rearingPsila rosae is described. For oviposition the imagines are cultured at room temperature in cages containing moist filter paper at the bottom, furthermore the well described oviposition places, and a food place and a water place at the ceiling. A mixture of sugar, casein-hydrolysate, yeast, saltmixture and water serves as food. The eggs may be collected three times during the week by washing out with water and are stored at room temperature in little embryo dishes. The newly hatched larvae must be cultured in little Petri dishes at 15°C, fed with pieces of carrot. It is necessary to make a little hole for each larva on the underside of the carrot piece and to shove the larvae in the holes. Furthermore a layer of moist sand under the carrot pieces is necessary. Mould and bacterial decay are the most dangerous facts which have to be observed. From heavy moulded carrot pieces the larvae must be taken out and put on new pieces. Fullgrown larvae pupate in the sand, from where they may be collected. Only if the sand is to moist or to little, the larvae go back into the piece for pupating. In this case you must remove the pupa, which is more riskfull than taking out a larva. The collected pupae are stored in a Petri dish on moist sand at 15°C. The paper finishes with some remarks about the diapause and the possibility for its prevention.

An Experimental Study of Feeding, Basking, Marching and Pottering in Locust Nymphs

An Experimental Study of Feeding, Basking, Marching and Pottering in Locust Nymphs

Techniques for Rearing the Corn Earworm, Heliothis zea1

A method for rearing the corn earworm ( Heliothis zea (Boddie)) is described and the importance of a cloth surface for images to cling to after emergence and during wing expansion is emphasized. It is apparent that the main difficulties in rearing the corn earworm involve its unpredictable mating habits in the laboratory. In order to meet the requirement for an average incidence of mating in this species the following factors should be considered: (1) A fresh supply of 10% honey solution should be kept in the cage. (2) Light intensity should be 1 foot-candle or below and a villous oviposition surface furnished. (3) The cage temperature should be kept below 80., preferably somewhere between 73° to 80°F. (4) Humidity should be high, 90% or above. (5) The larval food should be kept as fresh as possible.