尼日利亚一种脆弱豆娘幼虫的首次报告,并附有一些生态注释:保护伞物种保护方法的案例

IF 1.7 4区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION
E. O. Akindele, Abiodun M. Adedapo, B. Adu, S. S. Ogbogu
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引用次数: 2

摘要

背景和研究缺乏关于受威胁水生物种分布的信息阻碍了它们的保护,从而使它们在被报告之前容易面临灭绝风险。因此,本研究首次在尼日利亚报道了一种脆弱的豆娘——stahli五脉虫幼虫的发生和栖息地特异性。方法于2020年7月和12月从尼日利亚克罗斯河州Ekor瀑布的一条乡村溪流中采集了stahli P.的样本,该溪流非常靠近尼日利亚-喀麦隆边境。在每个采样周期也测量了一些水质参数。结果在两个采样周期内,共记录到27只斯塔丽对虾幼虫和1只从其蜕皮中脱出的teneral成虫。栖息地是一条森林溪流,以急流、瀑布和深色岩石为特征。水流在3或4秒内以1米的速度快速流动,因此具有步枪和源头水流的特征。溶解氧浓度在8.05和8.09 mg/L之间,而溶解氧饱和度为~98%。生物需氧量在1.04至1.08 mg/L之间,而pH在7.28至7.56之间。结论该河流可以被描述为具有高度的生态完整性,这可以从其所调查的水参数的最佳值范围和受威胁物种的存在中得到证明。对保护的影响基于栖息地的特殊性,斯塔丽假单胞菌被认为是保护热带溪流及其河岸林中其他共存物种所需的保护伞物种。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
First Report of the Larva of a Vulnerable Damselfly in Nigeria, With Some Ecological Notes: A Case for Umbrella Species Conservation Approach
Background and Research Lack of information on the distribution of threatened aquatic species impedes their conservation, thus predisposing them to extinction risk before being reported. Hence, this study reports in Nigeria, for the first time, the occurrence and habitat specificity of the larva of Pentaphlebia stahli (Zygoptera: Pentaphlebiidae) a vulnerable damselfly. Methods Samples of P. stahli were collected in July and December 2020 from a rural stream situated at the Ekor Waterfalls in the Cross River State of Nigeria and very close to the Nigeria–Cameroon border. Some water quality parameters were also measured in each sampling period. Results A total of 27 larvae of P. stahli and 1 teneral adult emerging from its exuvia were recorded in the two sampling periods. The habitat was a forested stream characterized by rapids, falls, and dark rock substrata. Water flows at a fast rate of 1 m in 3 or 4 seconds, thus characterizing a rifle and headwater stream. Dissolved oxygen concentration was between 8.05 and 8.09 mg/L, while dissolved oxygen saturation was ∼98%. Biological oxygen demand was between 1.04 and 1.08 mg/L, while pH ranged from 7.28 and 7.56. Conclusion The stream could be described as having high ecological integrity as evidenced in its optimum range of values for the investigated water parameters and the presence of a threatened species. Implications for Conservation Based on habitat specificity, P. stahli is considered an umbrella species required for conserving other co-occurring species in the tropical stream and its riparian forest.
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来源期刊
Tropical Conservation Science
Tropical Conservation Science BIODIVERSITY CONSERVATION-
CiteScore
3.60
自引率
5.90%
发文量
16
审稿时长
>12 weeks
期刊介绍: Tropical Conservation Science is a peer-reviewed, open access journal that publishes original research papers and state-of-the-art reviews of broad interest to the field of conservation of tropical forests and of other tropical ecosystems.
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