您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Environmental-related variation of stoichiometric traits in body and organs of non-native sailfin catfishes Pterygoplichthys spp

文献类型： 外文期刊

作者： Wei, Hui 1 ; Liang, Yanting 2 ; Luo, Qiang 3 ; Gu, Dangen 1 ; Mu, Xidong 1 ; Hu, Yinchang 1 ;

作者机构： 1.Chinese Acad Fisheries Sci, Pearl River Fisheries Res Inst, Key Lab Alien Species & Ecol Secur CAFS, Minist Agr & Rural Affairs,Key Lab Prevent & Cont, Guangzhou 510380, Guangdong, Peoples R China

2.Guangxi Univ, Sch Marine Sci, Nanning, Guangxi, Peoples R China

3.Yibin Univ, Coll Life Sci & Food Engn, Yibin, Sichuan, Peoples R China

关键词： allocation; calcium (Ca); Invasive fish; Loricariidae; nutrient limitation

期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：3.167； 五年影响因子：3.445 ）

ISSN： 2045-7758

年卷期： 2022 年 12 卷 11 期

页码：

收录情况： SCI

摘要： Intraspecific variation in stoichiometric traits was thought to be an adaptive response to reduce the elemental imbalance between organism and diet in the habitat. Studying the spatial variation of stoichiometric traits of non-native species and the factors contributing to the variation could help to better understand the invasion mechanism of non-native fish. In this study, stoichiometric traits (i.e. carbon [C], phosphorus [P], calcium [Ca] and their ratios) variation in the body and organs of non-native sailfin catfishes Pterygoplichthys spp. were investigated across 13 river sections in the main river basins of Guangdong province. The relationships between environmental factors and stoichiometric traits were analyzed using a general linear model and an information-theoretic approach. A manipulated feeding experiment was conducted to investigate the impact of food quality on the stoichiometry of sailfin catfishes in a greenhouse. Sailfin catfishes exhibited considerable variability in body and organ elemental composition. Site identity was the main factor contributing to the variation, which could be explained by a combination of environmental factors including climate, diet quality, fish species richness and trophic status in the invaded rivers. Water chemistry (i.e. total nitrogen and phosphorus, ammonia nitrogen and soluble reactive phosphorus) contributed to the most variation of stoichiometric traits. Imbalances of P and Ca between sailfin catfishes and food resources varied among sampling sites, reflecting the spatial heterogeneity of nutrients limitation. Juvenile sailfin catfishes exhibited stoichiometric homeostasis (0 < 1/H < 0.25) for all elemental contents and ratios in the feeding experiment. These findings suggested variation in stoichiometric traits of sailfin catfishes might be attributed to the changes in elemental metabolism to cope with context-specific environments. This study provided heuristic knowledge about environmental-related variation in stoichiometric traits, which could enhance the understanding of the non-native species' adaptation to resource fluctuation in the invaded ecosystems.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台