Abundance and growth of the invasive Asian clam, Corbicula fluminea, in the lower Columbia River, USA

IF 2.2 3区环境科学与生态学 Q2 ECOLOGY

Aquatic Invasions Pub Date : 2022-01-01 DOI:10.3391/ai.2022.17.1.03

S. Henricksen, S. Bollens

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引用次数: 4

Abstract

The Asian clam, Corbicula fluminea , is a broadly distributed and abundant invasive species, yet many aspects of its biology are not well understood. Based on previous research by other investigators, we hypothesized that abundance, population growth rate, and individual growth rate of C. fluminea would increase with temperature, chlorophyll- a , and dissolved oxygen. We sampled C. fluminea at two sites in the lower Columbia River (CR), USA. Modal progression analyses indicated a life span of 2–3 years. A generalized linear mixed model (GLMM) predicting the abundance of C. fluminea indicated a significant negative association with chlorophyll- a concentration, whereas a GLMM predicting the population growth rate of C. fluminea indicated a significant positive association with dissolved oxygen. The GLMM predicting the individual growth rate of C. fluminea indicated the individual growth rate was not significantly related to any individual environmental variable. Overall, these results emphasize that the biology of C. fluminea in the CR is similar in many regards to other populations studied in temperate regions globally, but that important spatial differences can occur between sites separated by 60 km within the same river system.

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美国哥伦比亚河下游入侵亚洲蛤的丰度和生长

亚洲蛤(Corbicula fluinea)是一种分布广泛且数量丰富的入侵物种，但其生物学的许多方面尚不清楚。在前人研究的基础上，我们假设丰度、种群生长率和个体生长率会随着温度、叶绿素- a和溶解氧的增加而增加。我们在美国哥伦比亚河(CR)下游的两个地点取样。模态进展分析表明寿命为2-3年。用广义线性混合模型(GLMM)预测河蟹种群丰度与叶绿素- A浓度呈显著负相关，而用广义线性混合模型预测河蟹种群生长率与溶解氧呈显著正相关。GLMM预测氟蝇个体生长速率表明，个体生长速率与任何个体环境变量均无显著相关。总的来说，这些结果强调了CR中氟化c的生物学在许多方面与全球温带地区研究的其他种群相似，但在同一河流水系内相隔60公里的地点之间可能存在重要的空间差异。

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来源期刊

Aquatic Invasions ECOLOGY-MARINE & FRESHWATER BIOLOGY

CiteScore

4.30

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Aquatic Invasions is an open access, peer-reviewed international journal focusing on academic research of biological invasions in both inland and coastal water ecosystems from around the world. It was established in 2006 as initiative of the International Society of Limnology (SIL) Working Group on Aquatic Invasive Species (WGAIS) with start-up funding from the European Commission Sixth Framework Programme for Research and Technological Development Integrated Project ALARM. Aquatic Invasions is an official journal of International Association for Open Knowledge on Invasive Alien Species (INVASIVESNET). Aquatic Invasions provides a forum for professionals involved in research of aquatic non-native species, including a focus on the following: • Patterns of non-native species dispersal, including range extensions with global change • Trends in new introductions and establishment of non-native species • Population dynamics of non-native species • Ecological and evolutionary impacts of non-native species • Behaviour of invasive and associated native species in invaded areas • Prediction of new invasions • Advances in non-native species identification and taxonomy