Author Keywords: behaviour; Colubridae; ecology; Masticophis flagellum; radiotelemetry; Reptilia; Serpentes; temperature; thermoregulation 相似文献
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61.
T. R. Shanthaveerappa Morton B. Waitzman Geoffrey H. Bourne 《Histochemistry and cell biology》1966,7(1):80-95
Summary Detailed studies on phosphorylase localization in various components of the eyeball of rabbit and squirrel monkey have been made. Corneal epithelium, endothelium, and stromal cells, extrinsic and intrinsic muscles of the eyeball, ciliary process, endothelial cells of the anterior chamber angle, vitreal cells, lens epithelium, inner segment of cones; plexiform layer, ganglion cell layer, internal and external limiting membrane and Muller cells show high phosphorylase activity. Surprisingly, we observed phosphorylase activity inside the nucleus in the posterior 2 to 3 layers of corneal epithelium. The significance of phosphorylase localization in relation to glycogen distribution in various components of the eyeball and their energy requirements is stressed. 相似文献
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Geoffrey Dean 《BMJ (Clinical research ed.)》1959,2(5156):852-857
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Geoffrey Myddelton 《BMJ (Clinical research ed.)》1965,2(5456):304-305
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Geoffrey A. Hammerson 《Journal of thermal biology》1989,14(4):219-224
1. 1.|Body temperature (Tb) and activity of the snake Masticophis flagellum were studied by radiotelemetry in an outdoor enclosure.
2. 2.|Mean diurnal Tb varied little over a wide range of weather conditions, but weather variation was accompanied by major changes in sun exposure and in the timing and duration of activity.
3. 3.|Recently fed snakes reduced activity and exhibited neither a thermophilic response nor increased precision of thermoregulation compared to fasting snakes.
70.
Susan S. Bell Geoffrey R. F. Hicks Keith Walters 《Journal of experimental marine biology and ecology》1989,130(3):291-303
The resettlement behavior of meiobenthic copepods, which actively migrated from sediments in a seagrass bed, was investigated in a shallow subtidal area in Tampa Bay, Florida, U.S.A. Experimental studies were conducted to determine whether meiobenthic copepods after emerging from sediments at sunset reenter the sedimentary substratum or select other subhabitats, water and seagrass blades. Migrating copepods were collected with emergence traps and transferred to experimental aquaria in the field which contained sediment, seagrass-blade and water treatments. Settlement into each type of treatment was measured in separate 2-h and 9-h experiments. Differences in densities of copepod taxa retrieved from emergence traps and introduced into experimental aquaria were recorded as were differing relative proportions of each copepod species returning to the substratum treatments. Settlement patterns of total copepods and three dominant copepod species, Zausodes arenicolus, Halicyclops sp. and Robertsonia hamata, departed from those expected by chance. The populations of R. hamata and Halicyclops sp. which settled were generally skewed towards males and a close matching of males and copepodites within treatment dishes was evident. Similar to nighttime-emergence patterns, timing and magnitude of postmigration reentry differs among copepod taxa and such reentry may be linked to reproductive events. Complex behavioral processes previously noted for fish and macrofaunal organisms in seagrass beds may also be important in recruitment and reassortment of meiobenthic copepods. 相似文献