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Piza-Roca C, Schoeman D, Frere C. Fitness benefits of male dominance behaviours depend on the degree of individual inbreeding in a polyandrous lizard. Proc Biol Sci 2020; 287:20200097. [PMID: 32429806 PMCID: PMC7287366 DOI: 10.1098/rspb.2020.0097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/21/2020] [Indexed: 01/21/2023] Open
Abstract
In polyandrous species, sexual selection extends beyond mating competition to selection for egg fertilization. As a result, the degree to which factors influencing mating success impact overall reproductive success becomes variable. Here, we used a longitudinal behavioural and genetic dataset for a population of eastern water dragons (Intellagama lesueurii) to investigate the degree to which male dominance, a pre-mating selection trait, influences overall reproductive success, measured as the number of surviving offspring. Moreover, we examine the interactive effects with a genetic trait, individual inbreeding, known to influence the reproductive success of males in this species. We found fitness benefits of male dominance, measured as body size and frequency of dominance behaviours displayed. However, individuals' propensity to display dominance behaviours had mixed effects, depending on the degree of inbreeding. While inbred males benefited from frequent displays, highly outbred males exhibited better reproductive outputs when displaying to a lesser extent. Given that outbred males have enhanced reproductive success in this species, the costs of displaying dominance behaviours may outweigh the benefits. Overall, our results demonstrate the fitness benefits of dominance in a polyandrous lizard, and suggest that these are modulated by an independent genetic trait. Our results may contribute to explaining the presence of alternative mating tactics in this species, owing to the variability in net fitness benefits of dominance. Our findings also reveal the challenges associated with investigating fitness traits in isolation, which may undermine the validity of results when important interactions are ignored.
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Affiliation(s)
- Carmen Piza-Roca
- Global-Change Ecology Research Group, University of the Sunshine Coast, Queensland, Australia
| | - David Schoeman
- Global-Change Ecology Research Group, University of the Sunshine Coast, Queensland, Australia
- Centre for African Conservation Ecology, Department of Zoology, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa
| | - Celine Frere
- Global-Change Ecology Research Group, University of the Sunshine Coast, Queensland, Australia
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Bouchet PJ, Peterson AT, Zurell D, Dormann CF, Schoeman D, Ross RE, Snelgrove P, Sequeira AMM, Whittingham MJ, Wang L, Rapacciuolo G, Oppel S, Mellin C, Lauria V, Krishnakumar PK, Jones AR, Heinänen S, Heikkinen RK, Gregr EJ, Fielding AH, Caley MJ, Barbosa AM, Bamford AJ, Lozano-Montes H, Parnell S, Wenger S, Yates KL. Better Model Transfers Require Knowledge of Mechanisms. Trends Ecol Evol 2019; 34:489-490. [PMID: 31054858 DOI: 10.1016/j.tree.2019.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Phil J Bouchet
- Centre for Research into Ecological & Environmental Modelling, School of Mathematics and Statistics, University of St Andrews, St Andrews, UK.
| | | | - Damaris Zurell
- Swiss Federal Research Institute WSL, Dept. Landscape Dynamics, Zuercherstrasse 111, CH-8903 Birmensdorf, Switzerland; Humboldt-Universität zu Berlin, Geography Dept., Unter den Linden 6, D-10099 Berlin, Germany
| | - Carsten F Dormann
- Biometry & Environmental System Analysis, University of Freiburg, Tennenbacher Str. 4, 79106 Freiburg, Germany
| | - David Schoeman
- School of Science & Engineering, The University of the Sunshine Coast, Maroochydore, QLD 4558, Australia; Centre for African Conservation Ecology, Department of Zoology, Nelson Mandela University, Port Elizabeth, South Africa
| | - Rebecca E Ross
- School of Biological and Marine Sciences, Plymouth University, Drake Circus, Plymouth, PL4 8AA, UK; Institute for Marine Research, Nordnesgaten 50, 5005 Bergen, Norway
| | - Paul Snelgrove
- Department of Ocean Sciences and Department of Biology, Memorial University of Newfoundland, St. John's, NL A1C 5S7, Canada
| | - Ana M M Sequeira
- School of Biological Sciences, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; IOMRC and The University of Western Australia Oceans Institute, University of Western Australia, Crawley, WA 6009, Australia
| | - Mark J Whittingham
- Biology, School of Natural and Environmental Sciences, Newcastle University, Newcastle-Upon-Tyne, NE1 7RU, UK
| | - Lifei Wang
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON M5S 3B2, Canada; Gulf of Maine Research Institute, Portland, ME 04101, USA
| | | | - Steffen Oppel
- RSPB Centre for Conservation Science, Royal Society for the Protection of Birds, The David Attenborough Building, Pembroke Street, Cambridge CB2 3QZ, UK
| | - Camille Mellin
- The Environment Institute and School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia; Australian Institute of Marine Science, PMB No 3, Townsville 4810, QLD, Australia
| | - Valentina Lauria
- Istituto per l'Ambiente Marino Costiero, IAMC-CNR, Mazara del Vallo, Trapani, Italy
| | - Periyadan K Krishnakumar
- Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Alice R Jones
- The Environment Institute and School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia
| | - Stefan Heinänen
- DHI, Ecology and Environment Department, Agern Allé 5, DK-2970 Hørsholm, Denmark; Novia University of Applied Sciences, Raseborgsvägen 9, 10600 Ekenäs, Finland
| | - Risto K Heikkinen
- Finnish Environment Institute, Biodiversity Centre, PO Box 140, FIN- 00251 Helsinki, Finland
| | - Edward J Gregr
- Institute for Resources, Environment, and Sustainability, University of British Columbia, AERL Building, 2202 Main Mall, Vancouver, BC, Canada; SciTec h Environmental Consulting, 2136 Napier Street, Vancouver, BC V5L 2N9, Canada
| | | | - M Julian Caley
- ARC Centre for Excellence in Mathematical and Statistical Frontiers, Queensland University of Technology, Brisbane, QLD, Australia; School of Mathematical Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - A Márcia Barbosa
- Centro de Investigação em Ciências Geo-Espaciais, Faculdade de Ciências, Universidade do Porto, Observatório Astronómico Prof. Manuel de Barros, Alameda do Monte da Virgem, 4430-146 Vila Nova de Gaia, Portugal
| | - Andrew J Bamford
- Wildfowl &Wetlands Trust, Slimbridge, Gloucestershire, GL2 7BT, UK
| | - Hector Lozano-Montes
- CSIRO Oceans and Atmosphere, Indian Ocean Marine Research Centre, The University of Western Australia, Crawley, WA 6009, Australia
| | - Stephen Parnell
- School of Environment and Life Sciences, University of Salford, Manchester, UK
| | - Seth Wenger
- Odum School of Ecology, University of Georgia, Athens, GA 30601, USA
| | - Katherine L Yates
- School of Environment and Life Sciences, University of Salford, Manchester, UK
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Yates KL, Bouchet PJ, Caley MJ, Mengersen K, Randin CF, Parnell S, Fielding AH, Bamford AJ, Ban S, Barbosa AM, Dormann CF, Elith J, Embling CB, Ervin GN, Fisher R, Gould S, Graf RF, Gregr EJ, Halpin PN, Heikkinen RK, Heinänen S, Jones AR, Krishnakumar PK, Lauria V, Lozano-Montes H, Mannocci L, Mellin C, Mesgaran MB, Moreno-Amat E, Mormede S, Novaczek E, Oppel S, Ortuño Crespo G, Peterson AT, Rapacciuolo G, Roberts JJ, Ross RE, Scales KL, Schoeman D, Snelgrove P, Sundblad G, Thuiller W, Torres LG, Verbruggen H, Wang L, Wenger S, Whittingham MJ, Zharikov Y, Zurell D, Sequeira AM. Outstanding Challenges in the Transferability of Ecological Models. Trends Ecol Evol 2018; 33:790-802. [DOI: 10.1016/j.tree.2018.08.001] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 08/03/2018] [Accepted: 08/03/2018] [Indexed: 11/30/2022]
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Abstract
Food webs near the interface of adjacent ecosystems are potentially subsidised by the flux of organic matter across system boundaries. Such subsidies, including carrion of marine provenance, are predicted to be instrumental on open-coast sandy shores where in situ productivity is low and boundaries are long and highly permeable to imports from the sea. We tested the effect of carrion supply on the structure of consumer dynamics in a beach-dune system using broad-scale, repeated additions of carcasses at the strandline of an exposed beach in eastern Australia. Carrion inputs increased the abundance of large invertebrate scavengers (ghost crabs, Ocypode spp.), a numerical response most strongly expressed by the largest size-class in the population, and likely due to aggregative behaviour in the short term. Consumption of carrion at the beach-dune interface was rapid and efficient, driven overwhelmingly by facultative avian scavengers. This guild of vertebrate scavengers comprises several species of birds of prey (sea eagles, kites), crows and gulls, which reacted strongly to concentrations of fish carrion, creating hotspots of intense scavenging activity along the shoreline. Detection of carrion effects at several trophic levels suggests that feeding links arising from carcasses shape the architecture and dynamics of food webs at the land-ocean interface.
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Affiliation(s)
- Thomas A. Schlacher
- Faculty of Science, University of the Sunshine Coast, Maroochydore, Queensland, Australia
| | - Simone Strydom
- Faculty of Science, University of the Sunshine Coast, Maroochydore, Queensland, Australia
| | - Rod M. Connolly
- Australian Rivers Institute – Coast & Estuaries, Griffith University, Gold Coast, Southport, Queensland, Australia
| | - David Schoeman
- Faculty of Science, University of the Sunshine Coast, Maroochydore, Queensland, Australia
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Ceccarelli DM, McKinnon AD, Andréfouët S, Allain V, Young J, Gledhill DC, Flynn A, Bax NJ, Beaman R, Borsa P, Brinkman R, Bustamante RH, Campbell R, Cappo M, Cravatte S, D'Agata S, Dichmont CM, Dunstan PK, Dupouy C, Edgar G, Farman R, Furnas M, Garrigue C, Hutton T, Kulbicki M, Letourneur Y, Lindsay D, Menkes C, Mouillot D, Parravicini V, Payri C, Pelletier B, Richer de Forges B, Ridgway K, Rodier M, Samadi S, Schoeman D, Skewes T, Swearer S, Vigliola L, Wantiez L, Williams A, Williams A, Richardson AJ. The coral sea: physical environment, ecosystem status and biodiversity assets. Adv Mar Biol 2013; 66:213-290. [PMID: 24182902 DOI: 10.1016/b978-0-12-408096-6.00004-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The Coral Sea, located at the southwestern rim of the Pacific Ocean, is the only tropical marginal sea where human impacts remain relatively minor. Patterns and processes identified within the region have global relevance as a baseline for understanding impacts in more disturbed tropical locations. Despite 70 years of documented research, the Coral Sea has been relatively neglected, with a slower rate of increase in publications over the past 20 years than total marine research globally. We review current knowledge of the Coral Sea to provide an overview of regional geology, oceanography, ecology and fisheries. Interactions between physical features and biological assemblages influence ecological processes and the direction and strength of connectivity among Coral Sea ecosystems. To inform management effectively, we will need to fill some major knowledge gaps, including geographic gaps in sampling and a lack of integration of research themes, which hinder the understanding of most ecosystem processes.
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