4.7 Article

Dose-dependent in vivo effects of formulated moxidectin on seedling emergence of temperate grassland species

期刊

SCIENCE OF THE TOTAL ENVIRONMENT
卷 905, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.scitotenv.2023.167152

关键词

Anthelmintics; Endozoochory; Hormesis; Macrocyclic lactones; Sheep; Seed

向作者/读者索取更多资源

This study investigates the impact of anthelmintic drugs on seedling emergence in grasslands using sheep as seed vectors. The results show that the emergence rate and timing of seedlings were significantly affected by the administration of the drug, which could have implications for plant population dynamics in grasslands.
Sheep function as effective endozoochorous seed vectors in grasslands. Recent laboratory-based studies showed that this important function can be impaired by macrocyclic lactone anthelmintics, which are used to control parasites and enter into the environment mainly via faeces; however, there is a lack of in vivo studies. We conducted a seed-feeding experiment with sheep that included four temperate grassland species from four different families (Achillea ptarmica, Asteraceae; Agrostis capillaris, Poaceae; Dianthus deltoides, Caryophyllaceae; Plantago lanceolata, Plantaginaceae). A series of three feeding trials was carried out after one of two groups of sheep received a single administration of a common oral formulation of the macrocyclic lactone moxidectin. Faeces were collected to determine seedling emergence rate and emergence timing as well as moxidectin concentration via HPLC. Seedling emergence differed significantly between the anthelmintic-treated sheep and the control group. This impact depended on time of seed uptake after anthelmintic administration. Number of emerging seedlings was significantly reduced (27.1 %) when faeces moxidectin concentrations were high (on average 3153 ng g(-1); 1 d post treatment) and significantly increased (up to 68.8 %) when moxidectin concentrations were low (<= 86 ng g(-1); 7, 14 d pt). Mean emergence time was significantly lowered at low moxidectin concentrations. These results demonstrate dose-related effects of deworming on seedling emergence which might affect endozoochory and eventually plant population dynamics in grasslands.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据