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Erralde SM, AcuÑa FH. Trophic ecology of the intertidal sea anemone Bunodosoma zamponii (Cnidaria, Actiniaria): diet composition, seasonal variation and trophic parameters. AN ACAD BRAS CIENC 2020; 92:e20190520. [PMID: 33084760 DOI: 10.1590/0001-3765202020190520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/16/2019] [Indexed: 11/22/2022] Open
Abstract
Sea anemones are considered as polyphagous opportunistic predators and it has been suggested that their diet reflects the structure of the community they inhabit. The feeding ecology of intertidal species is an interesting topic to study due to their wide variety of strategies to obtain food. In this sense, we studied the diet of Bunodosoma zamponii, the most abundant actiniarian in the rocky intertidal of Punta Cantera (Mar del Plata, Argentina). The objectives were to describe it and compare its composition seasonally and between diurnal and nocturnal high tides. We examined the gastric cavity content of 154 specimens collected seasonally at both diurnal and nocturnal high tides, and 39 different prey items were identified, some of which are recorded here for the first time for this species. No variations on diet composition were found between seasons or between diurnal and nocturnal high tides, suggesting that the food available does not vary either. Bunodosoma zamponii ingests mostly items with low biomass, which contribute to the total biomass ingested in direct proportion to their frequency in the diet. The bivalve Brachidontes rodriguezii was the main prey for the anemone, followed to a lesser extent by certain amphipods, other mollusks and algae.
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Affiliation(s)
- StefanÍa M Erralde
- Laboratorio de Biología de Cnidarios, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata-CONICET, Funes, 3250, 7600 Mar del Plata, Argentina
| | - FabiÁn H AcuÑa
- Laboratorio de Biología de Cnidarios, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata-CONICET, Funes, 3250, 7600 Mar del Plata, Argentina.,Estación Científica Coiba (Coiba-AIP), Clayton, Panamá, República de Panamá
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Tapia-Lewin S, Vergara K, De La Barra C, Godoy N, Castilla JC, Gelcich S. Distal impacts of aquarium trade: Exploring the emerging sandhopper (Orchestoidea tuberculata) artisanal shore gathering fishery in Chile. AMBIO 2017; 46:706-716. [PMID: 28247340 PMCID: PMC5595739 DOI: 10.1007/s13280-017-0906-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 11/07/2016] [Accepted: 02/02/2017] [Indexed: 06/06/2023]
Abstract
Artisanal fishery activities support the livelihoods of millions of people worldwide, particularly in developing countries. Within these fisheries, distal global drivers can promote switching between alternative target resources. These drivers can promote the rapid development of new, unregulated and previously unexploited fisheries that pose a threat to the sustainability of ecosystems. In this paper, we describe a new artisanal shore gathering activity that targets a previously unexploited resource: the sandhopper (Orchestoidea tuberculata). The activity is driven by aquarium trade demand for food. We used mixed methods to describe the activity, assessed basic socio-economic incentives, and estimated Catches per Unit Effort. Results show that the sandhopper plays an important role for the livelihoods of shore gatherers engaged in the activity. Gatherers have adapted and developed two main extraction methods with different degrees of investment and extraction rates. Furthermore, gatherers have developed local knowledge regarding the ecology and management of the resource. Results show that economic incentives can motivate a rapid expansion of this unregulated activity. Future research gaps and management options to address the development of this fishery are discussed in light of these findings.
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Affiliation(s)
- Sebastián Tapia-Lewin
- Center of Applied Ecology and Sustainability (CAPES) and Centro de Conservación Marina, Departamento de Ecologia, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile
- Bren School of Environmental Science and Management, 2400 Bren Hall, University of California, Santa Barbara, CA, 93106-5131 USA
| | - Karina Vergara
- Center of Applied Ecology and Sustainability (CAPES) and Centro de Conservación Marina, Departamento de Ecologia, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile
| | - Christian De La Barra
- Dirección Regional de Pesca de la Región del Libertador Bernardo O’Higgins, Servicio Nacional de Pesca, Evaristo Merino 526, Pichilemu, Chile
| | - Natalio Godoy
- Center of Applied Ecology and Sustainability (CAPES) and Centro de Conservación Marina, Departamento de Ecologia, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile
- The Nature Conservancy, Marchant Pereira 367, of. 801, Providencia, 7500557 Santiago, Chile
| | - Juan Carlos Castilla
- Center of Applied Ecology and Sustainability (CAPES) and Centro de Conservación Marina, Departamento de Ecologia, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile
| | - Stefan Gelcich
- Center of Applied Ecology and Sustainability (CAPES) and Centro de Conservación Marina, Departamento de Ecologia, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile
- Bren School of Environmental Science and Management, 2400 Bren Hall, University of California, Santa Barbara, CA, 93106-5131 USA
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Luarte T, Bonta CC, Silva-Rodriguez EA, Quijón PA, Miranda C, Farias AA, Duarte C. Light pollution reduces activity, food consumption and growth rates in a sandy beach invertebrate. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 218:1147-1153. [PMID: 27589894 DOI: 10.1016/j.envpol.2016.08.068] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 08/24/2016] [Accepted: 08/25/2016] [Indexed: 05/17/2023]
Abstract
The continued growth of human activity and infrastructure has translated into a widespread increase in light pollution. Natural daylight and moonlight cycles play a fundamental role for many organisms and ecological processes, so an increase in light pollution may have profound effects on communities and ecosystem services. Studies assessing ecological light pollution (ELP) effects on sandy beach organisms have lagged behind the study of other sources of disturbance. Hence, we assessed the influence of this stressor on locomotor activity, foraging behavior, absorption efficiency and growth rate of adults of the talitrid amphipod Orchestoidea tuberculata. In the field, an artificial light system was assembled to assess the local influence of artificial light conditions on the amphipod's locomotor activity and use of food patches in comparison to natural (ambient) conditions. Meanwhile in the laboratory, two experimental chambers were set to assess amphipod locomotor activity, consumption rates, absorption efficiency and growth under artificial light in comparison to natural light-dark cycles. Our results indicate that artificial light have significantly adverse effects on the activity patterns and foraging behavior of the amphipods, resulting on reduced consumption and growth rates. Given the steady increase in artificial light pollution here and elsewhere, sandy beach communities could be negatively affected, with unexpected consequences for the whole ecosystem.
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Affiliation(s)
- T Luarte
- Departamento de Ecología y Biodiversidad, Facultad de Ecología y Recursos Naturales, Universidad Andres Bello, República no. 440, Santiago, Chile
| | - C C Bonta
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - E A Silva-Rodriguez
- Departamento de Ecología y Biodiversidad, Facultad de Ecología y Recursos Naturales, Universidad Andres Bello, República no. 440, Santiago, Chile
| | - P A Quijón
- Department of Biology, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada
| | - C Miranda
- Departamento de Ecología y Biodiversidad, Facultad de Ecología y Recursos Naturales, Universidad Andres Bello, República no. 440, Santiago, Chile
| | - A A Farias
- Departamento de Ecología, Pontificia Universidad Católica de Chile, Chile; Center for Applied Ecology and Sustainability (CAPES), Chile; Centro de Investigación e Innovación para el Cambio Climático (CIICC), Universidad Santo Tomás, Chile
| | - C Duarte
- Departamento de Ecología y Biodiversidad, Facultad de Ecología y Recursos Naturales, Universidad Andres Bello, República no. 440, Santiago, Chile; Center for the Study of Multiple-drivers on Marine Socio-ecological Systems (MUSELS), Universidad de Concepción, Concepción, Chile.
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Ammar KN, Morgan E. Seasonality of the endogenous activity rhythm inTalitrus saltator(Montagu) from a sandy beach in northeastern Tunisia. BIOL RHYTHM RES 2006. [DOI: 10.1080/09291010600739765] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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