Differences in predator-avoidance behavior between two invasive gobies and their native competitors  

作　　者：Mateusz Augustyniak Kalina Kotacka Jarostaw Kobak Piotr Hliwa Piotr Ktosinski Matgorzata Poznanska-Kakareko tukasz Jermacz Tomasz Kakareko 

机构地区：[1]Department of Ecology and Biogeography,Nicolaus Copernicus University in Torun,Lwowska 1,87-100,Torun,Poland [2]Department of Invertebrate Zoology and Parasitology,Nicolaus Copernicus University in Torun,Lwowska 1,87-100,Torun,Poland [3]Department of Ichthyology and Aquaculture,University of Warmia and Mazury,Oczapowskiego 5,10-719,Olsztyn,Poland

出　　处：《Current Zoology》2023年第6期727-737,共11页动物学报（英文版）

基　　金：supported by Narodowe Centrum Nauki(NCN Grant No.2016/23/B/NZ8/00741,PI:TK).

摘　　要：Globally,fish are frequently introduced beyond their native range.Some,like Ponto-Caspian gobies,are becoming invasive,achieving high colo-nization rates and constituting frequent prey for native predators.However,little is known about the effectiveness of antipredator behaviors of the invaders,which may shape their role in the invaded community and contribute to the invasion success.We compared antipredator behaviors of invasive gobies and native fish species after their detection by the predator,when the danger becomes direct.We studied 2 fish pairs,each consisting of an invasive and native species co-occurring in the environment and belonging to the same prey guild:(1)the racer goby Babka gymnotrachelus versus European bulhead Cottus gobio,(2)the monkey goby Neogobius fluviatilis versus gudgeon Gobio gobio,facing a naive predator(the Eurasian perch Perca fluviatilis).We analyzed behaviors of single prey individuals(escaping,staying in shelter,and activity)and sin-gle predators(activity,searching,following,capturing,and latency to prey consumption).In the predator presence,the bullhead was less active and more often managed to escape after capture than the racer goby.The gudgeon escaped before the capture more often than the monkey goby.The predator succeeded later with the bullhead compared to racer goby,whereas no differences in ingestion time occurred between the gudgeon and monkey goby.The results suggest that,in terms of hunting effort of native predators,the invasive gobies are equivalent to or more profitable prey than their native analogs,which can facilitate the integration of the gobies into local food webs.

关 键 词：antipredator behavior fish behavior invasive prey native predator predator-prey interactions 

分 类 号：Q95[生物学—动物学]