Association between porpoise presence and fish choruses:implications for feeding strategies and ecosystem-based conservation of the East Asian finless porpoise  

作　　者：Zhaolong CHENG Yongtao LI Matthew Keith PINE Tao ZUO Mingxiang NIU Jun WANG 

机构地区：[1]Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao,China [2]Laboratory for Marine Ecology and Environmental Science,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao,China [3]Department of Biology,University of Victoria,Victoria,British Columbia,Canada

出　　处：《Integrative Zoology》2023年第1期169-182,共14页整合动物学（英文版）

基　　金：supported by grants from the China National Offshore Oil Corporation foundation(grant number CF-MEEC/TR/2021-12);the Central Public-interest Scientific Institution Basal Research Fund,CAFS(grant number 2019ZD0201);the Bureau of Fisheries,the Ministry of Agriculture and Rural Affairs of the People’s Republic of China(grant number 125C0505),The research project was permitted by the Ministry of Agriculture and Rural Affairs of the People’s Republic of China.All procedures strictly adhered to Chinese law and ethical guidelines.

摘　　要：The associations between feeding activities and environmental variables inform animal feeding tactics that max-imize energetic gains by minimizing energy costs while maximizing feeding success.Relevant studies in aquatic animals,particularly marine mammals,are scarce due to difficulties in the observation of feeding behaviors in aquatic environments.This data scarcity concurrently hinders ecosystem-basedfishery management in the context of small toothed-cetacean conservation.In the present study,a passive acoustic monitoring station was deployed in an East Asianfinless porpoise habitat in Laizhou Bay to investigate potential relationships between East Asianfinless porpoises and their prey.The data revealed that porpoises were acoustically present nearly every day during the survey period.Porpoise detection rates differed between spring and autumn in concert with activities offish choruses.During spring,fish choruses were present throughout the afternoon,and this was the time when porpoise vocalizations were the most frequently detected.During autumn,whenfish choruses were absent,porpoise detec-tion rates decreased,and diurnal patterns were not detected.The close association betweenfish choruses andfin-less porpoise activities implies an“eavesdropping”feeding strategy to maximize energetic gains,similar to other toothed cetaceans that are known to engage similar feeding strategies.Underwater noise pollution,particularly those maskingfish choruses,could interruptfinless porpoises’feeding success.Fisheries competing soniferousfishes withfinless porpoise could impactfinless porpoise viability through ecosystem disruption,in addition tofishing gear entanglement.

关 键 词：diel pattern noise andfishery management optimal foraging theory passive acoustic monitoring 

分 类 号：P73[天文地球—海洋科学]