Influence of intraspecific competition for food on the bodyweight of the adult aphidophagous ladybird, Coccinella transversalis

IF 0.6 Q4 ENVIRONMENTAL SCIENCES European journal of environmental sciences Pub Date : 2021-06-20 DOI:10.14712/23361964.2021.1
A. Pervez, Rupali Sharma
{"title":"Influence of intraspecific competition for food on the bodyweight of the adult aphidophagous ladybird, Coccinella transversalis","authors":"A. Pervez, Rupali Sharma","doi":"10.14712/23361964.2021.1","DOIUrl":null,"url":null,"abstract":"Aggregation of conspecific predators sharing a common prey, influences their bodyweights. We investigated the influence of intraspecific competition of adult ladybirds of Coccinella transversalis Fabricius on their bodyweight feeding on rusty plum aphid, Hysteroneura setariae (Thomas). Adult males and females consumed a significantly greater number of aphids with increase in predator-density, however, the aphid-consumption per predator declined with this increase. The weight gain per predator also decreased linearly with increase in the density of both male and female predators. This indicates that the weight-gain of the predator is a function of the prey consumed. The searching efficiency decreased with increase in predator density due to mutual inference. The mutual interference constants for adult male and female ladybirds were −0.419 and −0.546, respectively. The females consumed a greater number of aphids than males. The killing power of the ladybird denoted by the k-value increased curvilinearly with increase in predator density. We conclude that prey consumption is a function of body size and that the offspring of those that aggregate at low densities in prey-rich habitats develop into large adults.","PeriodicalId":11931,"journal":{"name":"European journal of environmental sciences","volume":" ","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2021-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European journal of environmental sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14712/23361964.2021.1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 2

Abstract

Aggregation of conspecific predators sharing a common prey, influences their bodyweights. We investigated the influence of intraspecific competition of adult ladybirds of Coccinella transversalis Fabricius on their bodyweight feeding on rusty plum aphid, Hysteroneura setariae (Thomas). Adult males and females consumed a significantly greater number of aphids with increase in predator-density, however, the aphid-consumption per predator declined with this increase. The weight gain per predator also decreased linearly with increase in the density of both male and female predators. This indicates that the weight-gain of the predator is a function of the prey consumed. The searching efficiency decreased with increase in predator density due to mutual inference. The mutual interference constants for adult male and female ladybirds were −0.419 and −0.546, respectively. The females consumed a greater number of aphids than males. The killing power of the ladybird denoted by the k-value increased curvilinearly with increase in predator density. We conclude that prey consumption is a function of body size and that the offspring of those that aggregate at low densities in prey-rich habitats develop into large adults.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
种内食物竞争对成体异食瓢虫体重的影响
同种掠食者聚集在一起共享一个共同的猎物,会影响它们的体重。研究了法氏瓢虫成虫种内竞争对其采食锈李蚜(Hysteroneura seariae)体重的影响。随着捕食者密度的增加,成年雄性和雌性对蚜虫的消耗显著增加,但对每个捕食者的蚜虫消耗随捕食者密度的增加而下降。每个捕食者的体重增加也随着雄性和雌性捕食者密度的增加而线性下降。这表明捕食者的体重增加是猎物被吃掉的一个函数。由于相互推理,搜索效率随着捕食者密度的增加而降低。雌雄瓢虫的相互干扰常数分别为- 0.419和- 0.546。雌性比雄性消耗更多的蚜虫。以k值表示的瓢虫杀伤力随捕食者密度的增加呈曲线上升。我们的结论是,猎物的消耗是身体大小的函数,那些在猎物丰富的栖息地以低密度聚集的后代发育成大型成年。
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 去求助
来源期刊
CiteScore
1.50
自引率
12.50%
发文量
6
审稿时长
25 weeks
期刊介绍: The European Journal of Environmental Sciences offers a mixture of original refereed research papers, which bring you some of the most exciting developments in environmental sciences in the broadest sense, often with an inter- or trans-disciplinary perspective, focused on the European problems. The journal also includes critical reviews on topical issues, and overviews of the status of environmental protection in particular regions / countries. The journal covers a broad range of topics, including direct or indirect interactions between abiotic or biotic components of the environment, interactions of environment with human society, etc. The journal is published twice a year (June, December).
期刊最新文献
Difficulties in determining distribution of population sizes within different orchid metapopulations Distribution and invasiveness of four non-native species of plants in ecosystems in the Chorokhi delta (SW Georgia) Pollination strategies of deceptive orchids – a review The effect of underground drainage on peat meadows and inactivation of the drainage in an attempt to restore these meadows, which failed as it reduced the ability of soils to retain water Albedo on a glacial foreland at ground level and landscape scale driven by vegetation-substrate patterns
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1