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首页> 外文期刊>Journal of Zoology >Shedding light on the role of photoperiod, rainfall and ambient temperature on the breeding physiology of male Lesser Egyptian jerboa (Jaculus jaculus) from central Saudi Arabia
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Shedding light on the role of photoperiod, rainfall and ambient temperature on the breeding physiology of male Lesser Egyptian jerboa (Jaculus jaculus) from central Saudi Arabia

机译：对沙特阿拉伯中部男性较小埃及杰布亚（Jaculus Jaculus）育种生理的作用阐明了沙特阿拉伯

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摘要

This study aimed to assess the seasonal reproductive strategy occurring in the male Lesser Egyptian jerboa (Jaculus jaculus) and determine which environmental cues are responsible for initiating reproductive recrudescence. Body mass, morphometry of the reproductive tract, the histology of the testes and the circulating testosterone concentrations in wild maleJ. jaculus, from central Saudi Arabia, were studied over 12 consecutive months. Furthermore, sixteen additional males were collected and subsequently placed on either a short-day (SD) or a long-day (LD) light schedule under controlled laboratory conditions. Using these male reproductive parameters, we investigated the potential proximate environmental cues that may trigger the onset of reproduction. Unexpectedly, males were reproductively active during three out of the four seasons, namely autumn, winter and spring possibly due to the rainfall that fell at an unprecedented frequency and quantity during this time. However, we revealed the importance of other environmental triggers, namely photoperiod and ambient temperature, on the control of male reproduction inJ. jaculus. Decreasing photoperiod (SD) and ambient temperature were observed to activate the reproductive system by increasing plasma testosterone concentration. The male Lesser Egyptian jerboa was found to exhibit a marked seasonal reproduction controlled by the environmental cues of ambient temperature and photoperiod.
机译：本研究旨在评估男性较小的埃及Jerboa（Jaculus Jaculus）中发生的季节性生殖策略，并确定哪些环境提示负责启动生殖过渡。体重，生殖道的形态学，麦略术中睾丸组织学和循环睾酮浓度。来自沙特阿拉伯中部的Jaculus连续12个月进行了学习。此外，收集16个额外的雄性并随后在受控实验室条件下置于短日（SD）或长期（LD）光刻。使用这些男性生殖参数，我们调查了可能引发繁殖开始的潜在近似环境提示。出乎意料地，在四季中的三个赛中，男性在四季中的三个中生殖活跃，即秋季，冬季，春季可能是由于在此期间以前所未有的频率和数量下降而落下。然而，我们揭示了其他环境触发器的重要性，即光周期和环境温度，对男性再生产的控制。 Jacules。观察到递减光周期（SD）和环境温度通过增加血浆睾酮浓度来激活生殖系统。男性较小的埃及Jerboa被发现表现出由环境温度和光周期的环境提示控制的明显的季节性繁殖。

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