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OBSERV ATION ON THE BEH AVIOR AND HABITS OF TOK AYS (GEKKO GECKO LINNAEUS)

Tang Da-Yiu, Liang Chi-Shen, Liu Su-Li.  
During the period from 1976, Summer to 1983, Winter, we worked in the Tokay Culture Station, Huai-ji District, Guangdong Provinced and observated as follows: 1. Naturally tokays live in crannies of limestones, but when they are removed in artificial crannies of granites, they may coloize well, grow up and propagate. 2. The dormant period of this ectotherm is from "Hoar Frost Descends" (about late November) to "Exciting the Insects" (about mid-March), when as the daily average temperature is below 15℃. And the period ends as the daily average temperature rises above 15℃. 3. They are noctural lizard, and their feeding behavior occurs normally from 7:00 to 11:00 p.m. But when caught in rainy weather, they are found resting in their crannies, and if this bad weather lasts for a few days, they may come out and feed even in daylight. It seems for hunger. 4. They are geodephagous lizard, and don't swallow dead preys nor catch unmoving preys. Their diet includes: insects such as Scerabasidae, Carabidae, Locustidae, Tettigoniidae, Blattidae, Cryllidae, Grylloralpidae, moths such as Pyralidae, Noctuidae, ect. together with their larvae and pulae, spides, snails and termes spp. Tokays also feed on other lizards such as Hemidactylus, and Takydromus, and new born mice (sucking mice) when they are cultured in cage system. 5. Their eating capacity increases or decreases according to the rise and fall of the temperature. In early April, when tokays have just aroused from hibernation and the temperature is about 16-18℃, they will feed little. Their appetite will increase as the temperature becomes higher. From July to September, when the daily average temperature is constantly at 25—32℃, their eating capacity reaches the highest in the year. And from mid-October to late November, due to the full of temperature, they feed less and less. If the average temperature drops below 15℃, they will begin their hibernation. 6. Usually, tokays are most active at about 8:00-10:00 p.m. daily, especially in the eve before a typhoon, they are very active in catching preys. 7. Their mating call may begin at the time before or after "Exciting the Insects" and stops at the end of their mating period (about August). The mating call is as "Geck-ko" in one sound, and is linked up together as "Geck-ko, Geck-ko, …" about 8-9, or 12-13 times in one call. They call mostly from evening till midnight, sometimes befoer dawning and silence in day time. 8. Both the newly hatched young ones after resting for a while and the large tokays fullfleshed may have the habit of throwing off their slough and eating up their own slough as well.
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