Gaspar-López E, Casabiell J, Estevez J A, Landete-Castillejos T, De La Cruz L F, Gallego L, García A J
Sección de Recursos Cinegéticos, IDR, Universidad de Castilla-La Mancha, 02071 Albacete, Spain.
J Comp Physiol B. 2009 Jul;179(5):617-22. doi: 10.1007/s00360-009-0343-7. Epub 2009 Feb 11.
The aim of this study is to describe the leptin cycle in male Iberian red deer (Cervus elaphus hispanicus) and relate it to antler and testosterone cycles. An additional aim is to assess the relationship between the plasma leptin concentration during antlers' growth and their final size. Therefore, blood from 21 Iberian red deer males was sampled monthly to analyse leptin and testosterone. At the same time the deer were weighed and their body condition was assessed. The length of antlers was measured every 2 weeks and, after casting, their final length and perimeters were taken. Leptin showed a seasonal cycle, with a peak in June that decreased as testosterone increased. Low values were observed in autumn, winter and early spring. The relationship observed between leptin and body mass or body condition score was different in spring, when plasma testosterone concentration is low, than in autumn, when testosterone increases. Leptin peak amplitude was positively related to final antler size. In conclusion, the relationship between leptin and body mass and body condition score changes through the year, possibly due to the influence of androgens and photoperiod. There was a positive relationship between plasma concentration of leptin during antler growth and final antler length.
本研究的目的是描述雄性伊比利亚马鹿（Cervus elaphus hispanicus）的瘦素循环，并将其与鹿茸和睾酮循环联系起来。另一个目的是评估鹿茸生长期间血浆瘦素浓度与其最终大小之间的关系。因此，每月采集21只伊比利亚马鹿雄性的血液，以分析瘦素和睾酮。同时，对鹿进行称重并评估其身体状况。每2周测量一次鹿茸长度，脱角后测量其最终长度和周长。瘦素呈现季节性循环，6月达到峰值，随着睾酮水平升高而下降。秋季、冬季和早春时瘦素水平较低。瘦素与体重或身体状况评分之间的关系在春季（血浆睾酮浓度较低时）与秋季（睾酮水平升高时）有所不同。瘦素峰值幅度与鹿茸最终大小呈正相关。总之，瘦素与体重和身体状况评分之间的关系在一年中有所变化，这可能是由于雄激素和光周期的影响。鹿茸生长期间血浆瘦素浓度与鹿茸最终长度之间存在正相关关系。
