Insights into cetacean sightings, abundance, and feeding associations: observations from the boat lift net fishery in the Kaimana important marine mammal area, Indonesia

IF 2.8 2区 生物学 Q1 MARINE & FRESHWATER BIOLOGY
Mochamad Iqbal Herwata Putra, Yance Malaiholo, Achmad Sahri, Edy Setyawan, Sekar M. C. Herandarudewi, Abdy W. Hasan, Hanggar Prasetio, Nur Ismu Hidayat, Mark V. Erdmann
{"title":"Insights into cetacean sightings, abundance, and feeding associations: observations from the boat lift net fishery in the Kaimana important marine mammal area, Indonesia","authors":"Mochamad Iqbal Herwata Putra, Yance Malaiholo, Achmad Sahri, Edy Setyawan, Sekar M. C. Herandarudewi, Abdy W. Hasan, Hanggar Prasetio, Nur Ismu Hidayat, Mark V. Erdmann","doi":"10.3389/fmars.2024.1431209","DOIUrl":null,"url":null,"abstract":"A comprehensive understanding of cetacean ecology is crucial for conservation and management. In 2018, Kaimana was identified as an Important Marine Mammal Area (IMMA) due to the regular presence of feeding aggregations of Australian humpback dolphins (<jats:italic>Sousa sahulensis</jats:italic>), Pacific bottlenose dolphins (<jats:italic>Tursiops aduncus</jats:italic>) and Bryde's whales (<jats:italic>Balaenoptera edeni</jats:italic>). Despite this, information on cetacean ecology in the Kaimana region is currently lacking. Notably, no cetacean surveys have been undertaken in Kaimana since it was officially recognized as an IMMA. We monitored food-provisioning interactions between lift-net fisheries and cetaceans from May 2021 to March 2023 to examine cetacean sightings, abundance and feeding associations. Five species were positively identified, including a new record of Killer whales (<jats:italic>Orcinus orca</jats:italic>). Our findings suggest a strong association between <jats:italic>T. aduncus</jats:italic> and lift-net fisheries, where they have been observed feeding on anchovies from outside the net in the morning. While other species were also observed, their presence was less frequent. Furthermore, year-round sightings of <jats:italic>S. sahulensis</jats:italic>, <jats:italic>B. edeni</jats:italic>, and <jats:italic>T. aduncus</jats:italic> during the study period indicate that these species are resident in this region. Our results suggest that Kaimana fulfills a second IMMA sub-criterion (small and resident populations of these three species) that was not previously noted in the original IMMA assessment.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"29 1","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers in Marine Science","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3389/fmars.2024.1431209","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

A comprehensive understanding of cetacean ecology is crucial for conservation and management. In 2018, Kaimana was identified as an Important Marine Mammal Area (IMMA) due to the regular presence of feeding aggregations of Australian humpback dolphins (Sousa sahulensis), Pacific bottlenose dolphins (Tursiops aduncus) and Bryde's whales (Balaenoptera edeni). Despite this, information on cetacean ecology in the Kaimana region is currently lacking. Notably, no cetacean surveys have been undertaken in Kaimana since it was officially recognized as an IMMA. We monitored food-provisioning interactions between lift-net fisheries and cetaceans from May 2021 to March 2023 to examine cetacean sightings, abundance and feeding associations. Five species were positively identified, including a new record of Killer whales (Orcinus orca). Our findings suggest a strong association between T. aduncus and lift-net fisheries, where they have been observed feeding on anchovies from outside the net in the morning. While other species were also observed, their presence was less frequent. Furthermore, year-round sightings of S. sahulensis, B. edeni, and T. aduncus during the study period indicate that these species are resident in this region. Our results suggest that Kaimana fulfills a second IMMA sub-criterion (small and resident populations of these three species) that was not previously noted in the original IMMA assessment.
对鲸类的观察、数量和喂养关联的见解:来自印度尼西亚凯马纳重要海洋哺乳动物区船吊渔网的观察
全面了解鲸类生态学对保护和管理至关重要。2018年,凯马纳被确定为重要的海洋哺乳动物区(IMMA),因为澳大利亚座头海豚(Sousa sahulensis)、太平洋宽吻海豚(Tursiops aduncus)和布氏鲸(Balaenoptera edeni)经常出现觅食聚集。尽管如此,关于凯马纳地区鲸类动物生态的信息目前仍然缺乏。值得注意的是,自从凯马纳岛被正式认定为国际海洋保护区以来,就没有对鲸类动物进行过调查。从2021年5月到2023年3月,我们监测了吊网渔业和鲸类之间的食物供应相互作用,以研究鲸类的目击、丰度和喂养关联。五个物种被确定,包括虎鲸(Orcinus orca)的新记录。我们的研究结果表明,T. aduncus与吊网渔业之间存在很强的联系,在吊网渔业中,人们观察到它们在早上从网外捕食凤尾鱼。虽然也观察到其他物种,但它们的出现频率较低。此外,在研究期间,sahulensis、B. edeni和T. aduncus的全年观测表明这些物种在该地区是常住物种。我们的结果表明,Kaimana满足IMMA的第二个子标准(这三个物种的小种群和常住种群),这在最初的IMMA评估中没有被注意到。
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
Frontiers in Marine Science
Frontiers in Marine Science Agricultural and Biological Sciences-Aquatic Science
CiteScore
5.10
自引率
16.20%
发文量
2443
审稿时长
14 weeks
期刊介绍: Frontiers in Marine Science publishes rigorously peer-reviewed research that advances our understanding of all aspects of the environment, biology, ecosystem functioning and human interactions with the oceans. Field Chief Editor Carlos M. Duarte at King Abdullah University of Science and Technology Thuwal is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, policy makers and the public worldwide. With the human population predicted to reach 9 billion people by 2050, it is clear that traditional land resources will not suffice to meet the demand for food or energy, required to support high-quality livelihoods. As a result, the oceans are emerging as a source of untapped assets, with new innovative industries, such as aquaculture, marine biotechnology, marine energy and deep-sea mining growing rapidly under a new era characterized by rapid growth of a blue, ocean-based economy. The sustainability of the blue economy is closely dependent on our knowledge about how to mitigate the impacts of the multiple pressures on the ocean ecosystem associated with the increased scale and diversification of industry operations in the ocean and global human pressures on the environment. Therefore, Frontiers in Marine Science particularly welcomes the communication of research outcomes addressing ocean-based solutions for the emerging challenges, including improved forecasting and observational capacities, understanding biodiversity and ecosystem problems, locally and globally, effective management strategies to maintain ocean health, and an improved capacity to sustainably derive resources from the oceans.
×
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
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信