| 摘要: |
| 细肢新米虾（Neocaridina gracilipoda）是中国常见淡水虾类之一，在水域生态系统中起重要的作用（如在物质循环和能量流动中起链接作用），但有关其基础生物学方面的研究目前却鲜见报道。有鉴于此，于2022年秋季在赤水河流域青菜河水库坝下（106°07′52″E，27°36′12″N）采集细肢新米虾490尾，通过对样本体长与体重的测定，掌握了此虾的体长和体重分布并报道了该物种的体长-体重关系。研究结果如下，青菜河水库坝下细肢新米虾：（1）体长介于10.60~32.13 mm（19.67 ± 2.54 mm）之间，优势体长集中在16.50~22.50 mm（n = 390，占总丰度的79.59%）；（2）体重介于0.01~0.44 g（0.11 ± 0.04 g）之间，优势体重集中在0.05~0.15 g（n = 415，占总丰度的84.69%）；（3）体长-体重的关系为W = 4 × 10-5L2.66 （R2 = 0.78，n = 490），b值（b = 2.66）与3存在显著性差异（P < 0.05），即表明青菜河水库坝下细肢新米虾种群呈负异速生长。 |
| 关键词: 细肢新米虾 青菜河水库 体长-体重关系 生长式型 |
| DOI：10.14188/j.ajsh.2024.02.007 |
| 分类号:S932.5+1 |
| 基金项目:仁怀市林业局项目（H2022343）；贵州大学博士基金（贵大人基合字［2021］65号） |
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| Studies on the body length-weight relationship of Neocaridina gracilipoda under the Qingcaihe Reservoir Dam in Guizhou Province |
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ZHANG Shuhai1, HE Haoyu1, WANG Fang2, XIANG Tao3, JU Tao4, SHI Lei5, GAN Lei1, WANG Zhenlu1, AN Miao1, DONG Xianghong1
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1.Key Laboratory of Animal Genetics， Breeding and Reproduction in the Plateau Mountainous Region， Ministry of Education， College of Animal Science， Guizhou University， Guiyang 550025， Guizhou， China;2.Chengdong School in North Harmony Road， Tuanfeng County， Huanggang 438000， Hubei， China;3.Laboratoire Evolution et Diversité Biologique （EDB）， UMR5174， Université Toulouse 3 Paul Sabatier， CNRS， IRD， Toulouse 31062， France;4.Guangxi Academy of Marine Sciences， Guangxi Academy of Sciences， Nanning 530007， Guangxi， China;5.Institute for Ecological Research and Pollution Control of Plateau Lakes， School of Ecology and Environmental Science， Yunnan University， Kunming 650504， Yunnan， China
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| Abstract: |
| Neocaridina gracilipoda is one of the common freshwater shrimps in China and plays an important role in aquatic ecosystems ，e.g. in linking matter cycling and energy flow，but there are few reports on its basic biological aspects. In light of that， by collecting 490 individuals under the Qingcaihe Reservoir Dam （106°07′52″E， 27°36′12″N） in the autumn of 2022 and measuring the body length （L） and weight （W）， we obtained L and W distribution of this shrimp and reported for the first time the L-W relationship of this species. The results were as follows： （1） L range was 10.60–32.13 mm （19.67 ± 2.54 mm）， while the dominant L range was 16.50–22.50 mm （n = 390， accounting for 79.56% of the total abundance）； （2） W range was 0.01-0.44 g （0.11 ± 0.04 g）， while the dominant W range was 0.05-0.15 mm （n = 415， 84.69% of the total abundance）； （3） L-W relationship was expressed in the equation W=4 × 10-5L2.66 （R2 = 0.78， n =490）， and there was a significant difference （P<0.05） between the value of b （b = 2.66） and 3， indicating that this species under the Qingcaihe Reservoir Dam exhibited negative allometric growth. |
| Key words: Neocaridina gracilipoda Qingcaihe Reservoir body length-weight relationship growth pattern |
