Anastasios Limnios, Chloe Adamopoulou, Miguel A. Carretero, Panayiotis Pafilis
{"title":"入侵的意大利壁虎在y形迷宫中寻找食物时胜过本土同类物种","authors":"Anastasios Limnios, Chloe Adamopoulou, Miguel A. Carretero, Panayiotis Pafilis","doi":"10.1007/s10211-021-00385-8","DOIUrl":null,"url":null,"abstract":"<div><p>Though biological invasions constitute one of the biggest threats for global biodiversity, our understanding of the mechanisms that enable invasive species to outperform native species is still limited, especially, in terms of behavior. Most available studies have examined behavioral traits which favor invasive species on the later stages of invasion, however, our knowledge on earlier stages, namely, when alien species face novel environments and must exploit new resources, remains obscure. Here, we focus on one crucial behavioral trait, finding food. The Italian wall lizard (<i>Podarcis siculus</i>) has been widely introduced and established viable populations in S. Europe and N. America. We examined whether <i>P. siculus</i> has enhanced exploratory behavior and abilities to find food compared to two native congeneric species with which it may come in contact in the near future, an insular endemic (<i>P. milensis</i>) and a widely distributed lizard (<i>P. erhardii</i>). We performed a Y-maze experiment, in which we varied arm markings in a standard way to prevent learning. <i>Podarcis siculus</i> was more efficient than its congenerics in finding and consuming food. This exploitative superiority was persistent, more frequent and repetitive. Interesting behavioral differences were also detected within the native species. Some <i>P. milensis</i> individuals showed no interest in exploring the maze, while few <i>P. erhardii</i> individuals remained rather indifferent to food even after detecting it. Our results suggest that the invasive <i>P. siculus</i> displays behavioral traits that could provide better opportunities for survival in the new environment and thus facilitate establishment even in the presence of congenerics. This provides further support to the idea that behavior plays a crucial role in animal invasions.</p></div>","PeriodicalId":6879,"journal":{"name":"acta ethologica","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10211-021-00385-8.pdf","citationCount":"2","resultStr":"{\"title\":\"Invasive Italian wall lizards outcompete native congeneric species in finding food in a Y-maze\",\"authors\":\"Anastasios Limnios, Chloe Adamopoulou, Miguel A. Carretero, Panayiotis Pafilis\",\"doi\":\"10.1007/s10211-021-00385-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Though biological invasions constitute one of the biggest threats for global biodiversity, our understanding of the mechanisms that enable invasive species to outperform native species is still limited, especially, in terms of behavior. Most available studies have examined behavioral traits which favor invasive species on the later stages of invasion, however, our knowledge on earlier stages, namely, when alien species face novel environments and must exploit new resources, remains obscure. Here, we focus on one crucial behavioral trait, finding food. The Italian wall lizard (<i>Podarcis siculus</i>) has been widely introduced and established viable populations in S. Europe and N. America. We examined whether <i>P. siculus</i> has enhanced exploratory behavior and abilities to find food compared to two native congeneric species with which it may come in contact in the near future, an insular endemic (<i>P. milensis</i>) and a widely distributed lizard (<i>P. erhardii</i>). We performed a Y-maze experiment, in which we varied arm markings in a standard way to prevent learning. <i>Podarcis siculus</i> was more efficient than its congenerics in finding and consuming food. This exploitative superiority was persistent, more frequent and repetitive. Interesting behavioral differences were also detected within the native species. Some <i>P. milensis</i> individuals showed no interest in exploring the maze, while few <i>P. erhardii</i> individuals remained rather indifferent to food even after detecting it. Our results suggest that the invasive <i>P. siculus</i> displays behavioral traits that could provide better opportunities for survival in the new environment and thus facilitate establishment even in the presence of congenerics. This provides further support to the idea that behavior plays a crucial role in animal invasions.</p></div>\",\"PeriodicalId\":6879,\"journal\":{\"name\":\"acta ethologica\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2021-10-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s10211-021-00385-8.pdf\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"acta ethologica\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10211-021-00385-8\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"BEHAVIORAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"acta ethologica","FirstCategoryId":"99","ListUrlMain":"https://link.springer.com/article/10.1007/s10211-021-00385-8","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BEHAVIORAL SCIENCES","Score":null,"Total":0}
Invasive Italian wall lizards outcompete native congeneric species in finding food in a Y-maze
Though biological invasions constitute one of the biggest threats for global biodiversity, our understanding of the mechanisms that enable invasive species to outperform native species is still limited, especially, in terms of behavior. Most available studies have examined behavioral traits which favor invasive species on the later stages of invasion, however, our knowledge on earlier stages, namely, when alien species face novel environments and must exploit new resources, remains obscure. Here, we focus on one crucial behavioral trait, finding food. The Italian wall lizard (Podarcis siculus) has been widely introduced and established viable populations in S. Europe and N. America. We examined whether P. siculus has enhanced exploratory behavior and abilities to find food compared to two native congeneric species with which it may come in contact in the near future, an insular endemic (P. milensis) and a widely distributed lizard (P. erhardii). We performed a Y-maze experiment, in which we varied arm markings in a standard way to prevent learning. Podarcis siculus was more efficient than its congenerics in finding and consuming food. This exploitative superiority was persistent, more frequent and repetitive. Interesting behavioral differences were also detected within the native species. Some P. milensis individuals showed no interest in exploring the maze, while few P. erhardii individuals remained rather indifferent to food even after detecting it. Our results suggest that the invasive P. siculus displays behavioral traits that could provide better opportunities for survival in the new environment and thus facilitate establishment even in the presence of congenerics. This provides further support to the idea that behavior plays a crucial role in animal invasions.
期刊介绍:
acta ethologica publishes empirical and theoretical research papers, short communications, commentaries, reviews and book reviews as well as methods papers in the field of ethology and related disciplines, with a strong concentration on the behavior biology of humans and other animals.
The journal places special emphasis on studies integrating proximate (mechanisms, development) and ultimate (function, evolution) levels in the analysis of behavior. Aspects of particular interest include: adaptive plasticity of behavior, inter-individual and geographic variations in behavior, mechanisms underlying behavior, evolutionary processes and functions of behavior, and many other topics.
acta ethologica is an official journal of ISPA, CRL and the Portuguese Ethological Society (SPE)