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English HM, Börger L, Kane A, Ciuti S. Advances in biologging can identify nuanced energetic costs and gains in predators. MOVEMENT ECOLOGY 2024; 12:7. [PMID: 38254232 PMCID: PMC10802026 DOI: 10.1186/s40462-024-00448-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024]
Abstract
Foraging is a key driver of animal movement patterns, with specific challenges for predators which must search for mobile prey. These patterns are increasingly impacted by global changes, principally in land use and climate. Understanding the degree of flexibility in predator foraging and social strategies is pertinent to wildlife conservation under global change, including potential top-down effects on wider ecosystems. Here we propose key future research directions to better understand foraging strategies and social flexibility in predators. In particular, rapid continued advances in biologging technology are helping to record and understand dynamic behavioural and movement responses of animals to environmental changes, and their energetic consequences. Data collection can be optimised by calibrating behavioural interpretation methods in captive settings and strategic tagging decisions within and between social groups. Importantly, many species' social systems are increasingly being found to be more flexible than originally described in the literature, which may be more readily detectable through biologging approaches than behavioural observation. Integrating the effects of the physical landscape and biotic interactions will be key to explaining and predicting animal movements and energetic balance in a changing world.
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Affiliation(s)
- Holly M English
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin, Ireland.
| | - Luca Börger
- Department of Biosciences, Swansea University, Swansea, UK
| | - Adam Kane
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin, Ireland
| | - Simone Ciuti
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin, Ireland
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Macaulay JDJ, Rojano-Doñate L, Ladegaard M, Tougaard J, Teilmann J, Marques TA, Siebert U, Madsen PT. Implications of porpoise echolocation and dive behaviour on passive acoustic monitoring. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2023; 154:1982-1995. [PMID: 37782119 DOI: 10.1121/10.0021163] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 09/06/2023] [Indexed: 10/03/2023]
Abstract
Harbour porpoises are visually inconspicuous but highly soniferous echolocating marine predators that are regularly studied using passive acoustic monitoring (PAM). PAM can provide quality data on animal abundance, human impact, habitat use, and behaviour. The probability of detecting porpoise clicks within a given area (P̂) is a key metric when interpreting PAM data. Estimates of P̂ can be used to determine the number of clicks per porpoise encounter that may have been missed on a PAM device, which, in turn, allows for the calculation of abundance and ideally non-biased comparison of acoustic data between habitats and time periods. However, P̂ is influenced by several factors, including the behaviour of the vocalising animal. Here, the common implicit assumption that changes in animal behaviour have a negligible effect on P̂ between different monitoring stations or across time is tested. Using a simulation-based approach informed by acoustic biologging data from 22 tagged harbour porpoises, it is demonstrated that porpoise behavioural states can have significant (up to 3× difference) effects on P̂. Consequently, the behavioural state of the animals must be considered in analysis of animal abundance to avoid substantial over- or underestimation of the true abundance, habitat use, or effects of human disturbance.
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Affiliation(s)
- Jamie Donald John Macaulay
- Department of Biology-Zoophysiology, Aarhus University, C. F. Møllers Allé 3, building 1131, 8000 Aarhus C, Denmark
| | - Laia Rojano-Doñate
- Department of Biology-Zoophysiology, Aarhus University, C. F. Møllers Allé 3, building 1131, 8000 Aarhus C, Denmark
| | - Michael Ladegaard
- Department of Biology-Zoophysiology, Aarhus University, C. F. Møllers Allé 3, building 1131, 8000 Aarhus C, Denmark
| | - Jakob Tougaard
- Department of Ecoscience-Marine Mammal Research, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Jonas Teilmann
- Department of Ecoscience-Marine Mammal Research, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Tiago A Marques
- Centre for Research into Ecological and Environmental Modelling, University of St. Andrews, St. Andrews, Scotland, United Kingdom
| | - Ursula Siebert
- Department of Ecoscience-Marine Mammal Research, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Peter Teglberg Madsen
- Department of Biology-Zoophysiology, Aarhus University, C. F. Møllers Allé 3, building 1131, 8000 Aarhus C, Denmark
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Hansen MJ, Domenici P, Bartashevich P, Burns A, Krause J. Mechanisms of group-hunting in vertebrates. Biol Rev Camb Philos Soc 2023; 98:1687-1711. [PMID: 37199232 DOI: 10.1111/brv.12973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/19/2023]
Abstract
Group-hunting is ubiquitous across animal taxa and has received considerable attention in the context of its functions. By contrast much less is known about the mechanisms by which grouping predators hunt their prey. This is primarily due to a lack of experimental manipulation alongside logistical difficulties quantifying the behaviour of multiple predators at high spatiotemporal resolution as they search, select, and capture wild prey. However, the use of new remote-sensing technologies and a broadening of the focal taxa beyond apex predators provides researchers with a great opportunity to discern accurately how multiple predators hunt together and not just whether doing so provides hunters with a per capita benefit. We incorporate many ideas from collective behaviour and locomotion throughout this review to make testable predictions for future researchers and pay particular attention to the role that computer simulation can play in a feedback loop with empirical data collection. Our review of the literature showed that the breadth of predator:prey size ratios among the taxa that can be considered to hunt as a group is very large (<100 to >102 ). We therefore synthesised the literature with respect to these predator:prey ratios and found that they promoted different hunting mechanisms. Additionally, these different hunting mechanisms are also related to particular stages of the hunt (search, selection, capture) and thus we structure our review in accordance with these two factors (stage of the hunt and predator:prey size ratio). We identify several novel group-hunting mechanisms which are largely untested, particularly under field conditions, and we also highlight a range of potential study organisms that are amenable to experimental testing of these mechanisms in connection with tracking technology. We believe that a combination of new hypotheses, study systems and methodological approaches should help push the field of group-hunting in new directions.
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Affiliation(s)
- Matthew J Hansen
- Fish Biology, Fisheries and Aquaculture, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, Berlin, 12587, Germany
| | - Paolo Domenici
- IBF-CNR, Consiglio Nazionale delle Ricerche, Area di Ricerca San Cataldo, Via G. Moruzzi No. 1, Pisa, 56124, Italy
- IAS-CNR, Località Sa Mardini, Torregrande, Oristano, 09170, Italy
| | - Palina Bartashevich
- Faculty of Life Science, Humboldt-Universität zu Berlin, Invalidenstrasse 42, Berlin, 10115, Germany
- Cluster of Excellence "Science of Intelligence," Technical University of Berlin, Marchstr. 23, Berlin, 10587, Germany
| | - Alicia Burns
- Faculty of Life Science, Humboldt-Universität zu Berlin, Invalidenstrasse 42, Berlin, 10115, Germany
- Cluster of Excellence "Science of Intelligence," Technical University of Berlin, Marchstr. 23, Berlin, 10587, Germany
| | - Jens Krause
- Fish Biology, Fisheries and Aquaculture, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, Berlin, 12587, Germany
- Faculty of Life Science, Humboldt-Universität zu Berlin, Invalidenstrasse 42, Berlin, 10115, Germany
- Cluster of Excellence "Science of Intelligence," Technical University of Berlin, Marchstr. 23, Berlin, 10587, Germany
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Comparing distribution of harbour porpoise using generalized additive models and hierarchical Bayesian models with integrated nested laplace approximation. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.110011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Torres-Pereira A, Araújo H, Matos FL, Bastos-Santos J, Sá S, Ferreira M, Martínez-Cedeira J, López A, Sequeira M, Vingada J, Eira C. Harbour Porpoise Abundance in Portugal over a 5-Year Period and Estimates of Potential Distribution. Animals (Basel) 2022; 12:1935. [PMID: 35953924 PMCID: PMC9367303 DOI: 10.3390/ani12151935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 11/17/2022] Open
Abstract
The Iberian porpoise population is small and under potentially unsustainable removal by fisheries bycatch. Recently, a marine Site of Community Importance (SCI) was legally approved in Portugal, but no measures ensued to promote porpoise conservation. Information about porpoise abundance and distribution is fundamental to guide any future conservation measures. Annual aerial surveys conducted between 2011 and 2015 show a low overall porpoise abundance and density (2254 individuals; 0.090 ind/km2, CV = 21.99%) in the Portuguese coast. The highest annual porpoise estimates were registered in 2013 (3207 individuals, 0.128 ind/km2), followed by a sharp decrease in 2014 (1653 individuals, 0.066 ind/km2). The porpoise density and abundance estimated in 2015 remained lower than the 2013 estimates. A potential distribution analysis of the Iberian porpoise population was performed using ensembles of small models (ESMs) with MaxEnt and showed that the overall habitat suitability is particularly high in the Portuguese northern area. The analysis also suggested a different pattern in porpoise potential distribution across the study period. These results emphasize the importance of further porpoise population assessments to fully understand the spatial and temporal porpoise habitat use in the Iberian Peninsula as well as the urgent need for on-site threat mitigation measures.
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Affiliation(s)
- Andreia Torres-Pereira
- Department of Biology & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (F.L.M.); (S.S.); (A.L.); (C.E.)
- ECOMARE, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (H.A.); (M.F.); (J.V.)
- Portuguese Wildlife Society (SPVS), Estação de Campo de Quiaios, 3081-101 Figueira da Foz, Portugal;
| | - Hélder Araújo
- ECOMARE, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (H.A.); (M.F.); (J.V.)
- Portuguese Wildlife Society (SPVS), Estação de Campo de Quiaios, 3081-101 Figueira da Foz, Portugal;
| | - Fábio L. Matos
- Department of Biology & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (F.L.M.); (S.S.); (A.L.); (C.E.)
| | - Jorge Bastos-Santos
- Portuguese Wildlife Society (SPVS), Estação de Campo de Quiaios, 3081-101 Figueira da Foz, Portugal;
| | - Sara Sá
- Department of Biology & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (F.L.M.); (S.S.); (A.L.); (C.E.)
- ECOMARE, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (H.A.); (M.F.); (J.V.)
- Portuguese Wildlife Society (SPVS), Estação de Campo de Quiaios, 3081-101 Figueira da Foz, Portugal;
| | - Marisa Ferreira
- ECOMARE, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (H.A.); (M.F.); (J.V.)
- Portuguese Wildlife Society (SPVS), Estação de Campo de Quiaios, 3081-101 Figueira da Foz, Portugal;
| | - José Martínez-Cedeira
- Coordinadora para o Estudio dos Mamíferos Mariños (CEMMA), Apdo, 156-36380 Gondomar, Spain;
| | - Alfredo López
- Department of Biology & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (F.L.M.); (S.S.); (A.L.); (C.E.)
- ECOMARE, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (H.A.); (M.F.); (J.V.)
- Coordinadora para o Estudio dos Mamíferos Mariños (CEMMA), Apdo, 156-36380 Gondomar, Spain;
| | - Marina Sequeira
- Instituto da Conservação da Natureza e Florestas (ICNF), Av. da República 16, 1050-191 Lisboa, Portugal;
| | - José Vingada
- ECOMARE, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (H.A.); (M.F.); (J.V.)
- Portuguese Wildlife Society (SPVS), Estação de Campo de Quiaios, 3081-101 Figueira da Foz, Portugal;
| | - Catarina Eira
- Department of Biology & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (F.L.M.); (S.S.); (A.L.); (C.E.)
- ECOMARE, Universidade de Aveiro, 3810-193 Aveiro, Portugal; (H.A.); (M.F.); (J.V.)
- Portuguese Wildlife Society (SPVS), Estação de Campo de Quiaios, 3081-101 Figueira da Foz, Portugal;
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De Dreu CKW, Triki Z. Intergroup conflict: origins, dynamics and consequences across taxa. Philos Trans R Soc Lond B Biol Sci 2022; 377:20210134. [PMID: 35369751 PMCID: PMC8977662 DOI: 10.1098/rstb.2021.0134] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Although uniquely destructive and wasteful, intergroup conflict and warfare are not confined to humans. They are seen across a range of group-living species, from social insects, fishes and birds to mammals, including nonhuman primates. With its unique collection of theory, research and review contributions from biology, anthropology and economics, this theme issue provides novel insights into intergroup conflict across taxa. Here, we introduce and organize this theme issue on the origins and consequences of intergroup conflict. We provide a coherent framework by modelling intergroup conflicts as multi-level games of strategy in which individuals within groups cooperate to compete with (individuals in) other groups for scarce resources, such as territory, food, mating opportunities, power and influence. Within this framework, we identify cross-species mechanisms and consequences of (participating in) intergroup conflict. We conclude by highlighting crosscutting innovations in the study of intergroup conflict set forth by individual contributions. These include, among others, insights on how within-group heterogeneities and leadership relate to group conflict, how intergroup conflict shapes social organization and how climate change and environmental degradation transition intergroup relations from peaceful coexistence to violent conflict. This article is part of the theme issue ‘Intergroup conflict across taxa’.
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Affiliation(s)
- Carsten K W De Dreu
- Institute of Psychology, Leiden University, Leiden, The Netherlands.,Center for Research in Experimental Economics and Political Decision Making, University of Amsterdam, Amsterdam, The Netherlands
| | - Zegni Triki
- Department of Zoology, Stockholm University, Stockholm, Sweden
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