Kaliszewicz Anita
Faculty of Biology and Environmental Sciences, Cardinal Stefan Wyszyński University in Warsaw, 01-815 Warsaw, Poland.
Zoolog Sci. 2015 Jan;32(1):72-6. doi: 10.2108/zs140052.
The intensity of environmental factors differs in natural habitats and could shape the response of an animal that is able to assess a factor's gradient. However, intensity-dependent response to environmental factors has been only occasionally reported in animals. In laboratory experiments, I studied changes in sexual induction in response to a series of temperature decreases in different clones of Hydra oligactis. The percentage of sexually-induced clone-mates was related to the temperature gradient intensity. This intensity-dependent response was observed independently of the H. oligactis clone and gender. The magnitude of the response differed significantly between the clones originated from the distinct sites. The possible significance of the intensity-dependent response in the Hydra clones is discussed in evolutionary terms.
自然栖息地中环境因素的强度各不相同，这可能会塑造能够评估某一因素梯度的动物的反应。然而，动物对环境因素的强度依赖性反应仅偶尔被报道。在实验室实验中，我研究了不同寡柄水螅克隆体对一系列温度降低的性诱导变化。性诱导的克隆体同伴的百分比与温度梯度强度有关。这种强度依赖性反应的观察结果与寡柄水螅的克隆体和性别无关。来自不同地点的克隆体之间反应的程度差异显著。本文从进化角度讨论了寡柄水螅克隆体中强度依赖性反应的可能意义。
