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Hui TY, Williams GA. Foraging in heterogeneous landscapes: variation in movement patterns of a tropical sand-bubbler crab. Behav Ecol 2022. [DOI: 10.1093/beheco/arac101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Abstract
Acquiring food in heterogeneous landscapes presents a challenge to many foragers, as searching for food in an optimal manner is difficult in spatially and temporally variable environments. Investigating individual foraging patterns can elucidate how environmental variations at different scales constrain or select for energy-optimizing movements, which can inform conservation and management strategies by identifying spatio-temporal variations in species’ habitat use. To test how such movements vary with environmental conditions, we investigated foraging patterns of the deposit-feeding sand-bubbler crab, Scopimera intermedia Balss, 1934 at multiple spatial and temporal scales on soft sediment shores in Hong Kong. On a broad, annual, scale the crabs produced foraging tracks of different length and foraged over different areas around their burrows between hot and cool seasons. Although foraging movements of the crabs were slower and more restricted during the cool season, probably due to low environmental temperatures, foraging areas during the hot season were larger but limited by increasing conspecific interactions. Over a smaller scale at which the crabs make movement decisions, parameters such as turning angle and speed were variable, even within individual foraging excursions. Such variations appeared to be responses to small-scale variations in sediment food patches, which resulted in the crabs employing multiple movement modes. This context-dependent foraging strategy enables the crabs to feed for a longer time in food-rich patches compared with a fixed strategy and is, therefore, critical for species living in environments such as intertidal sediments, where food distribution is heterogeneous and foraging time is constrained by the tide.
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Affiliation(s)
- Tin Yan Hui
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong , Pokfulam Road, Hong Kong , PR China
| | - Gray A Williams
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong , Pokfulam Road, Hong Kong , PR China
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Durden JM, Schoening T, Althaus F, Friedman A, Garcia R, Glover AG, Greinert J, Stout NJ, Jones D, Jordt A, Kaeli J, Köser K, Kuhnz L, Lindsay D, Morris K, Nattkemper T, Osterloff J, Ruhl H, Singh H, Tran M, Bett B. Perspectives In Visual Imaging for Marine Biology and Ecology: From Acquisition to Understanding. OCEANOGRAPHY AND MARINE BIOLOGY - AN ANNUAL REVIEW 2016. [DOI: 10.1201/9781315368597-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Uchman A, Wetzel A. Deep-Sea Ichnology: The Relationships Between Depositional Environment and Endobenthic Organisms. DEEP-SEA SEDIMENTS 2011. [DOI: 10.1016/b978-0-444-53000-4.00008-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Hughes D, Ansell A, Atkinson R, Nickell L. Underwater television observations of surface activity of the echiuran worm Maxmuelleria lankesteri (Echiura: Bonelliidae). J NAT HIST 2007. [DOI: 10.1080/00222939300770081] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- D.J. Hughes
- a Dunstaffnage Marine Laboratory , PO Box 3, Oban, Argyll, PA34 4AD, UK
| | - A.D. Ansell
- a Dunstaffnage Marine Laboratory , PO Box 3, Oban, Argyll, PA34 4AD, UK
| | - R.J.A. Atkinson
- b University Marine Biological Station , Millport, Isle of Cumbrae, KA28 0EG, UK
| | - L.A. Nickell
- a Dunstaffnage Marine Laboratory , PO Box 3, Oban, Argyll, PA34 4AD, UK
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Duineveld GCA, Lavaleye MSS, Berghuis EM, de Wilde PAWJ, van der Weele J, Kok A, Batten SD, de Leeuw JW. Patterns of benthic fauna and benthic respiration on the celtic continental margin in relation to the distribution of phytodetritus. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/iroh.19970820312] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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