Attack rates on artificial caterpillars in urban areas are higher than in suburban areas in Colombia

IF 1 4区环境科学与生态学 Q4 ECOLOGY

Journal of Tropical Ecology Pub Date : 2023-04-18 DOI:10.1017/S026646742300007X

Jefferson Cupitra-Rodríguez, Lorena Cruz-Bernate, J. Montoya-Lerma

{"title":"Attack rates on artificial caterpillars in urban areas are higher than in suburban areas in Colombia","authors":"Jefferson Cupitra-Rodríguez, Lorena Cruz-Bernate, J. Montoya-Lerma","doi":"10.1017/S026646742300007X","DOIUrl":null,"url":null,"abstract":"Abstract Growing urban expansion can alter ecological processes within trophic networks. Predation on herbivores is known to vary with the size of the area covered by vegetation, successional stage, altitude and predator community structure; however there are gaps in understanding how this occurs in urban and suburban environments. The purpose of this study was to determine whether predation pressure on artificial models of caterpillars varied with the degree of urbanisation and type of substrate. Artificial caterpillars were placed on two types of substrates (leaf vs. stem) in two areas of the city (urban vs. suburban). Total predation was measured as the number of models with evidence of attack by predators, with the predation rate estimated on a weekly basis. Predation was affected by the degree of urbanisation, being higher in urban (x̄ = 9.88%; SD = 4.09%, n = 8) than suburban areas (x̄ = 5.75%, SD = 4.21%, n = 8). Attack marks were observed in 23.8% (n = 125) of artificial caterpillars. The weekly predation rate on leaves (x̄ = 9.63%, SD = 5.95%, n = 8) was higher than that on stems (x̄ = 6%, SD = 4.2%, n = 8). These results suggest that the incidence of predation might vary with the degree of urbanisation and by the type of substrate on which prey organisms are found.","PeriodicalId":49968,"journal":{"name":"Journal of Tropical Ecology","volume":" ","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Tropical Ecology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1017/S026646742300007X","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ECOLOGY","Score":null,"Total":0}

引用次数: 1

Abstract

Abstract Growing urban expansion can alter ecological processes within trophic networks. Predation on herbivores is known to vary with the size of the area covered by vegetation, successional stage, altitude and predator community structure; however there are gaps in understanding how this occurs in urban and suburban environments. The purpose of this study was to determine whether predation pressure on artificial models of caterpillars varied with the degree of urbanisation and type of substrate. Artificial caterpillars were placed on two types of substrates (leaf vs. stem) in two areas of the city (urban vs. suburban). Total predation was measured as the number of models with evidence of attack by predators, with the predation rate estimated on a weekly basis. Predation was affected by the degree of urbanisation, being higher in urban (x̄ = 9.88%; SD = 4.09%, n = 8) than suburban areas (x̄ = 5.75%, SD = 4.21%, n = 8). Attack marks were observed in 23.8% (n = 125) of artificial caterpillars. The weekly predation rate on leaves (x̄ = 9.63%, SD = 5.95%, n = 8) was higher than that on stems (x̄ = 6%, SD = 4.2%, n = 8). These results suggest that the incidence of predation might vary with the degree of urbanisation and by the type of substrate on which prey organisms are found.

查看原文本刊更多论文

哥伦比亚市区对人造毛虫的攻击率高于郊区

摘要不断增长的城市扩张可以改变营养网络中的生态过程。已知对食草动物的捕食随植被覆盖区域的大小、演替阶段、海拔高度和捕食者群落结构而变化；然而，在理解这种情况如何在城市和郊区环境中发生方面存在差距。本研究的目的是确定毛虫人工模型的捕食压力是否随着城市化程度和基质类型的不同而变化。在城市的两个地区（城市和郊区），人工毛虫被放置在两种类型的基质上（叶子和茎）。总捕食量是指有捕食者攻击证据的模型数量，捕食率每周估计一次。捕食受城市化程度的影响，城市（x̄=9.88%；SD=4.09%，n=8）高于郊区（x̃=5.75%，SD=4.21%，n=8）。在23.8%（n=125）的人工毛毛虫中观察到攻击痕迹。叶片的周捕食率（x̄=9.63%，SD=5.95%，n=8）高于茎（x̃=6%，SD=4.2%，n=8。这些结果表明，捕食的发生率可能随着城市化程度和发现猎物的基质类型而变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Tropical Ecology 环境科学-生态学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： Journal of Tropical Ecology aims to address topics of general relevance and significance to tropical ecology. This includes sub-disciplines of ecology, such as conservation biology, evolutionary ecology, marine ecology, microbial ecology, molecular ecology, quantitative ecology, etc. Studies in the field of tropical medicine, specifically where it involves ecological surroundings (e.g., zoonotic or vector-borne disease ecology), are also suitable. We also welcome methods papers, provided that the techniques are well-described and are of broad general utility. Please keep in mind that studies focused on specific geographic regions or on particular taxa will be better suited to more specialist journals. In order to help the editors make their decision, in your cover letter please address the specific hypothesis your study addresses, and how the results will interest the broad field of tropical ecology. While we will consider purely descriptive studies of outstanding general interest, the case for them should be made in the cover letter.