灰田地蛞蝓 Deroceras reticulatum 的空间聚集在异常高的土壤湿度条件下不稳定。

IF 2.7 2区 农林科学 Q1 ENTOMOLOGY
Insects Pub Date : 2024-10-19 DOI:10.3390/insects15100819
Claire S V Price, W Edwin Harris, Emily Forbes, Keith F A Walters
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引用次数: 0

摘要

在典型的土壤湿度条件下,耕地中的 Deroceras reticulatum 表现出时空稳定的蛞蝓斑块。然而,异常高的土壤湿度对蛞蝓斑块稳定性的影响尚不清楚。在这项研究中,对土壤容重 50-125% 的土壤水分水平进行了阶梯梯度选择试验,结果表明蛞蝓偏好接近 125% 的土壤水分水平。然而,当选择高湿度(125%-370%)时,蛞蝓的活动变得不稳定,这可能是因为蛞蝓在寻找偏好的条件。在 2023/24 年这个极端降雨季节,对 21 块商业田地的蛞蝓空间聚集情况进行了调查,然后与典型降雨年份(2015-2018 年)进行了比较。在 2023/24 年期间,27.2% 的田地评估访问中出现了蛞蝓斑块,而在典型年份中,这一比例为 96.4%,这表明导致土壤湿度异常高的天气条件与蛞蝓空间聚集行为的崩溃有很大关系。随机森林模型确定了对蛞蝓分布和相对丰度影响最大的天气预测因子(降水、相对湿度、温度),评估日期和地区也与相对丰度有关。然而,影响土壤含水量的环境参数很复杂,单个天气预测因子的影响在统计学上并不显著。本文结合蛞蝓行为对目标蛞蝓处理的影响对结果进行了讨论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatial Aggregations of the Grey Field Slug Deroceras reticulatum Are Unstable Under Abnormally High Soil Moisture Conditions.

Deroceras reticulatum in arable fields display spatio-temporally stable slug patches that have been well documented under typical soil moisture conditions. The effect of abnormally high soil moisture on slug patch stability, however, is unknown. In this study, stepped gradient choice tests comparing soil moisture levels of 50-125% soil capacity showed slug preferences for levels in a range near to 125%. Activity became erratic, however, when given a choice of high moisture levels (125-370%), potentially because slugs searched for preferred conditions. Slug spatial aggregation was investigated in 21 commercial fields in 2023/24, a season of extreme rainfall, and then compared to years exhibiting typical rainfall (2015-2018). Slug patches occurred in 27.2% of assessment visits to fields during 2023/24 compared to 96.4% in typical years, suggesting weather conditions leading to abnormally high soil moisture are significantly associated with the breakdown of slug spatial aggregation behaviour. Random forest models identified the weather predictors (precipitation, relative humidity, temperature) with the highest impact on slug distribution and relative abundance, with the assessment date and region also related to relative abundance. However, a complex of environmental parameters affects soil moisture content, and no statistically significant effects of individual weather predictors emerged. The results are discussed in relation to slug behaviour in the context of their impact on targeted slug treatments.

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来源期刊
Insects
Insects Agricultural and Biological Sciences-Insect Science
CiteScore
5.10
自引率
10.00%
发文量
1013
审稿时长
21.77 days
期刊介绍: Insects (ISSN 2075-4450) is an international, peer-reviewed open access journal of entomology published by MDPI online quarterly. It publishes reviews, research papers and communications related to the biology, physiology and the behavior of insects and arthropods. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.
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