PDF(Pubmed)
Abstract：
Riverine caves are special habitats that are home to many aquatic and terrestrial species. Some Odonata species and their emerging are recorded at the entrance and in the twilight zones of subterranean habitats around the world. However, the emergence of any Odonata species has not been recorded in the dark zones of caves or other subterranean habitats. We report the first evidence of the emerging of the Hyrcanian Goldenring, Cordulegaster vanbrinkae Lohmann, 1993, as an endemic species of the Hyrcanian biogeographical region, in the dark zone of Danial Cave, in the World Heritage-listed Hyrcanian Forests, northern Iran. During 2020-2023, three newly emerged and three exuviae of the species were recorded in the entrance zone (25 m) and the dark zone of the cave (200-280 m). The main hypothesis of the study is the entry and exit of adults from the cave entrance. However, we still do not know if the newly emerged will leave the cave or not. We still need more study on the biology and ecology of the species inside and around the cave. Danial Cave, with its high biodiversity, is one of the most important caves in the Middle East, and is urgently in need of conservation as a national natural monument.
摘要：
河流洞穴是许多水生和陆生物种的特殊栖息地。一些Odonata物种及其新兴物种被记录在世界各地地下栖息地的入口和暮光地带。然而,在洞穴或其他地下栖息地的黑暗区域尚未记录任何Odonata物种的出现。我们报告了Hyrcanian黄金时代出现的第一个证据，药膏vanbrinkaeLohmann,1993年，作为海尔坎尼亚生物地理区的特有物种，在Danial洞穴的黑暗地带,在被列为世界遗产的海尔卡尼亚森林中，伊朗北部。在2020-2023年期间，在洞穴的入口区（25m）和黑暗区（200-280m）记录了该物种的三个新出现和三个种群。研究的主要假设是成年人从洞穴入口的进出。然而,我们仍然不知道新出现的人是否会离开洞穴。我们仍然需要对洞穴内部和周围物种的生物学和生态学进行更多研究。Danial洞穴,具有高度的生物多样性，是中东最重要的洞穴之一，迫切需要保护作为国家自然纪念碑。
