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Anuszczyk SR, Dabiri JO. Electromechanical enhancement of live jellyfish for ocean exploration. BIOINSPIRATION & BIOMIMETICS 2024; 19:026018. [PMID: 38330441 DOI: 10.1088/1748-3190/ad277f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/08/2024] [Indexed: 02/10/2024]
Abstract
The vast majority of the ocean's volume remains unexplored, in part because of limitations on the vertical range and measurement duration of existing robotic platforms. In light of the accelerating rate of climate change impacts on the physics and biogeochemistry of the ocean, the need for new tools that can measure more of the ocean on faster timescales is becoming pressing. Robotic platforms inspired or enabled by aquatic organisms have the potential to augment conventional technologies for ocean exploration. Recent work demonstrated the feasibility of directly stimulating the muscle tissue of live jellyfish via implanted microelectronics. We present a biohybrid robotic jellyfish that leverages this external electrical swimming control, while also using a 3D printed passive mechanical attachment to streamline the jellyfish shape, increase swimming performance, and significantly enhance payload capacity. A six-meter-tall, 13 600 l saltwater facility was constructed to enable testing of the vertical swimming capabilities of the biohybrid robotic jellyfish over distances exceeding 35 body diameters. We found that the combination of external swimming control and the addition of the mechanical forebody resulted in an increase in swimming speeds to 4.5 times natural jellyfish locomotion. Moreover, the biohybrid jellyfish were capable of carrying a payload volume up to 105% of the jellyfish body volume. The added payload decreased the intracycle acceleration of the biohybrid robots relative to natural jellyfish, which could also facilitate more precise measurements by onboard sensors that depend on consistent platform motion. While many robotic exploration tools are limited by cost, energy expenditure, and varying oceanic environmental conditions, this platform is inexpensive, highly efficient, and benefits from the widespread natural habitats of jellyfish. The demonstrated performance of these biohybrid robots suggests an opportunity to expand the set of robotic tools for comprehensive monitoring of the changing ocean.
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Affiliation(s)
- Simon R Anuszczyk
- Graduate Aerospace Laboratories, California Institute of Technology, Pasadena, CA, United States of America
| | - John O Dabiri
- Graduate Aerospace Laboratories, California Institute of Technology, Pasadena, CA, United States of America
- Mechanical and Civil Engineering, California Institute of Technology, Pasadena, CA, United States of America
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2
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Salvarani PI, Vieira LR, Rendón-von Osten J, Morgado F. Hawksbill Sea Turtle ( Eretmochelys imbricata) Blood and Eggs Organochlorine Pesticides Concentrations and Embryonic Development in a Nesting Area (Yucatan Peninsula, Mexico). TOXICS 2023; 11:50. [PMID: 36668776 PMCID: PMC9865186 DOI: 10.3390/toxics11010050] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
Environmental contaminants with chemical origins, such as organochlorine pesticides (OCPs) have major impacts on the health of marine animals, including sea turtles, due to the bioaccumulation of those substances by transference throughout the food chain. The effects of environmental pollution on the health of marine turtles are very important for management strategies and conservation. During recent decades, the south Gulf of Mexico and the Yucatan Peninsula have suffered from increasingly frequent disturbances from continental landmasses, river systems, urban wastewater runoff, port areas, tourism, industrial activities, pesticides from agricultural use, and other pollutants, such as metals, persistent organic pollutants (POPs) and hydrocarbons (from the oil industry activities), which contaminate water and sediments and worsen the environmental quality of the marine ecosystem in this region. In this study, we assessed the concentrations of OCPs in the blood and eggs of 60 hawksbill turtles (Eretmochelys imbricata) nesting at the Punta Xen turtle camp, and their effects on the nesting population's reproductive performance: specifically, maternal transfer and embryonic development were analyzed. Hematologic characteristics, including packed cell volume, white blood cell count, red blood cell count, and haemoglobin levels, and plasma chemistry values, including creatinine, blood urea nitrogen, uric acid, triglyceride, total cholesterol and glucose, were also measured. The general health of the turtles in this study, as well as their levels of urea, serum creatinine, glucose, uric, acid, cholesterol, and triglyceride, fell within normal ranges and was similar to other normal values, which could indicate the turtles' good energy levels and body conditions for nest-building activity, with all of the turtles able to successfully come ashore to nest. All the same, the obtained results also indicate that OCPs affect the nesting and reproductive performance of the hawksbill turtles, as well as their fertility and the development of the population of eggs and reproductive performance, specifically in terms of maternal transference and embryonic development. There were significant differences in the concentrations of OCPs (ΣHCHs and ΣDienes) between maternal blood and eggs, indicating that these chemicals are transferred from nesting females to eggs and, ultimately, to hatchlings. OCPs may, therefore, have an effect on the health and reproductive performance of hawksbill turtles, both in terms of their fertility and egg development. Conservation strategies need to be species-specific, due to differences in feeding, and address the reasons for any decline, focusing on regional assessments. Thus, accurate and comparable monitoring data are necessary, which requires the standardization of monitoring protocols.
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Affiliation(s)
- Patricia I. Salvarani
- Department of Biology and the Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
| | - Luis R. Vieira
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 2250-208 Matosinhos, Portugal
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Jaime Rendón-von Osten
- Instituto Epomex, Universidad Autónoma de Campeche, Av Augustin de Melgar y Juan de la Barrera s/n, Campeche 24039, Mexico
| | - Fernando Morgado
- Department of Biology and the Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal
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3
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Nasiri Z, Gholamalifard M, Ghasempouri SM. Determining Nest Site Selection by Hawksbill Sea Turtles in the Persian Gulf Using Unmanned Aerial Vehicles. CHELONIAN CONSERVATION AND BIOLOGY 2022. [DOI: 10.2744/ccb-1552.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | | | - Seyed Mahmoud Ghasempouri
- Department of Environmental Science, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, 46417-76489, Iran [; ; ]
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López-Castro MC, Cuevas E, Guzmán Hernández V, Raymundo Sánchez Á, Martínez-Portugal RC, Reyes DJL, Chio JÁB. Trends in Reproductive Indicators of Green and Hawksbill Sea Turtles over a 30-Year Monitoring Period in the Southern Gulf of Mexico and Their Conservation Implications. Animals (Basel) 2022; 12:ani12233280. [PMID: 36496800 PMCID: PMC9739169 DOI: 10.3390/ani12233280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
Long-term monitoring programs of species at risk are efficacious tools to assess population changes, evaluate conservation strategies, and improve management practices to ensure populations reach levels at which they can fulfill their ecological roles. For sea turtles, annual nesting beach surveys are the most accessible method to estimating the population abundance and reproductive output, especially when these are done in primary nesting sites. However, little data exist on the long-term assessment of these parameters. Here, we present the trends of the nest abundance, female size, hatching, and emergence success of hawksbill (Eretmochelys imbricata) and green (Chelonia mydas) turtles at key nesting beaches in the southern Gulf of Mexico over 31 years (from 1990 to 2021). The nest abundance showed an increasing trend in both species as a result of the sustained protection and conservation effort, but there was no significant temporal trend in the annual female size, clutch size, hatching, and emergence success. However, these indicators showed decreasing mean values over the last decade and should be closely monitored. We suggest these decreases link to the combined effects of ocean warming and anthropogenic pressures affecting the sea turtle foraging grounds. Aside from protecting key nesting sites, protecting and restoring crucial foraging habitats should be an immediate priority requiring international cooperation.
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Affiliation(s)
- Melania C. López-Castro
- Pronatura Península de Yucatán, A.C., Programa para la Conservación de la Tortuga Marina, Merida 97205, Yucatán, Mexico
- Correspondence:
| | - Eduardo Cuevas
- Departamento de Recursos del Mar, Consejo Nacional de Ciencia y Tecnología—Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Unidad Mérida, Merida 97310, Yucatán, Mexico
| | - Vicente Guzmán Hernández
- Comisión Nacional de Áreas Naturales Protegidas, Área de Protección de Flora y Fauna Laguna de Términos, Ciudad del Carmen 24129, Campeche, Mexico
| | - Ángeles Raymundo Sánchez
- Département des Sciences du Bois et de la Forêt, Faculté de Foresterie et de Géomatique, Université Laval, Quebec, QC G1V 0A6, Canada
| | - Rosa C. Martínez-Portugal
- Comisión Nacional de Áreas Naturales Protegidas, Parque Nacional Sistema Arrecifal Veracruzano, Veracruz 91919, Veracruz, Mexico
| | - Diana J. Lira Reyes
- Pronatura Península de Yucatán, A.C., Programa para la Conservación de la Tortuga Marina, Merida 97205, Yucatán, Mexico
| | - Jorge Ángel Berzunza Chio
- Secretaría de Medio Ambiente, Biodiversidad, Cambio Climático y Energía de Campeche, Subdirección de Vida Silvestre, San Francisco de Campeche 24095, Campeche, Mexico
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Fossette S, Ferreira LC, Whiting SD, King J, Pendoley K, Shimada T, Speirs M, Tucker AD, Wilson P, Thums M. Movements and distribution of hawksbill turtles in the Eastern Indian Ocean. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Critical In-Water Habitats for Post-Nesting Sea Turtles from the Southern Gulf of Mexico. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2021. [DOI: 10.3390/jmse9080793] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Marine turtles are globally endangered species that spend more than 95% of their life cycle in in-water habitats. Nevertheless, most of the conservation, recovery and research efforts have targeted the on-land habitats, due to their easier access, where adult females lay their eggs. Targeting the large knowledge gaps on the in-water critical habitats of turtles, particularly in the Large Marine Ecosystem Gulf of Mexico, is crucial for their conservation and recovery in the long term. We used satellite telemetry to track 85 nesting females from their beaches after they nested to identify their feeding and residency habitats, their migratory corridors and to describe the context for those areas. We delimited major migratory corridors in the southern Gulf of Mexico and West Caribbean and described physical features of internesting and feeding home ranges located mainly around the Yucatan Peninsula and Veracruz, Mexico. We also contributed by describing general aggregation and movement patterns for the four marine turtle species in the Atlantic, expanding the knowledge of the studied species. Several tracked individuals emigrated from the Gulf of Mexico to as far as Nicaragua, Honduras, and the Bahamas. This information is critical for identifying gaps in marine protection and for deciphering the spatial connectivity in large ocean basins, and it provides an opportunity to assess potential impacts on marine turtle populations and their habitats.
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Martinez-Estevez L, Amador JPC, Amador FC, Zilliacus KM, Pacheco AM, Seminoff JA, Lucero J, Oceguera K, Tershy BR, Croll DA. Spatial ecology of hawksbill sea turtles (Eretmochelys imbricata) in foraging habitats of the Gulf of California, Mexico. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Barr CE, Hamann M, Shimada T, Bell I, Limpus CJ, Ferguson J. Post-nesting movements and feeding ground distribution by the hawksbill turtle (Eretmochelys imbricata) from rookeries in the Torres Strait. WILDLIFE RESEARCH 2021. [DOI: 10.1071/wr20183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
ContextHawksbill sea turtles (Eretmochelys imbricata) are conservation-dependent species in many areas of the world. A key component to ensuring successful conservation initiatives for the species is understanding their distribution and habitat use, in particular, knowing the nesting sites, migration routes and foraging areas for each genetic stock, and how these might overlap with threats.
AimsInvestigate the post-nesting movements of hawksbill sea turtles nesting in the Torres Strait, including migration movements and foraging ground size and distribution.
MethodsNine nesting hawksbill turtles of the north-eastern Australian genetic stock were satellite-tagged between the 2010 and 2019 nesting seasons for 182 ± 143 days (mean ± s.d.).
Key resultsThree turtles continued to nest on adjacent islands before commencing their post-nesting migrations. From the nine tracked turtles, the following three migration movement strategies were identified: (1) direct migration between the nesting beach and foraging ground, (2) non-direct movements with a period of meandering, and (3) establishment of two foraging areas separated by direct movement pathways. Foraging grounds were distributed across the Torres Strait and north-eastern Australia and varied in size between 0.54 km2 and 3.31 km2 (95% UD). None of the turtles migrated outside of Australian waters.
ConclusionsThe localisation of these movements and habitats within Australian waters provides a unique conservation opportunity, whereby protection efforts involve multiple life stages and potentially preserve turtles from multiple genetic stocks. The variety of inter-nesting, migration and home range strategies used by the tracked turtles in the present study highlight the broad scope of hawksbill movements.
ImplicationsOur findings are useful for the implementation of future marine conservation areas and shed light into the nesting, migratory and foraging behaviours of hawkbills from this genetic stock. An understanding of the movement tracks and habitats used by a genetic pool is essential for well grounded implementation of conservation areas and management regulations.
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Arantes LS, Vargas SM, Santos FR. Global phylogeography of the critically endangered hawksbill turtle (Eretmochelys imbricata). Genet Mol Biol 2020; 43:e20190264. [PMID: 32555943 PMCID: PMC7288670 DOI: 10.1590/1678-4685-gmb-2019-0264] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 03/11/2020] [Indexed: 11/22/2022] Open
Abstract
The hawksbill turtle is a broadly distributed, highly migratory and critically endangered sea turtle species. The paucity of studies restricts the comprehension of its behavior and life history. In this work, we performed a global phylogeographic analysis using a compilation of previously published mitochondrial haplotype data to understand the dynamics and diversity of hawksbill populations worldwide. Our results revealed a complex demographic pattern associated to hawksbill phylogeography since the Pliocene. Isolation by distance is not enough to explain distinct demographic units of hawksbill turtles, which are also influenced by other factors as oceanic currents, coral reef distribution and nesting timing. The foraging aggregations are typically mixed stocks of individuals originating from multiple nesting areas, but there is also a trend of foragers coming from nearby natal beaches. Phylogenetic analysis indicates two highly divergent major lineages split between Atlantic and Indo-Pacific rookeries, but there is also a more recent Atlantic Ocean colonization from the Indo-Pacific Ocean. Long-distance dispersal events are likely responsible for homogenization between distant populations within oceans. Our findings provided new insights about population connectivity, identified gaps that should be prioritized in future research and highlighted the need for international efforts aiming at hawksbill's conservation.
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Affiliation(s)
- Larissa S Arantes
- Universidade Federal de Minas Gerais (UFMG), Instituto de Ciências Biológicas, Departamento de Genética, Ecologia e Evolução, Belo Horizonte, MG, Brazil
| | - Sarah M Vargas
- Universidade Federal do Espírito Santo (UFES), Instituto de Ciências Humanas e Naturais, Departamento de Ciências Biológicas, Vitória, ES, Brazil
| | - Fabrício R Santos
- Universidade Federal de Minas Gerais (UFMG), Instituto de Ciências Biológicas, Departamento de Genética, Ecologia e Evolução, Belo Horizonte, MG, Brazil
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Baumbach DS, Anger EC, Collado NA, Dunbar SG. Identifying Sea Turtle Home Ranges Utilizing Citizen-Science Data from Novel Web-Based and Smartphone GIS Applications. CHELONIAN CONSERVATION AND BIOLOGY 2019. [DOI: 10.2744/ccb-1355.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dustin S. Baumbach
- Protective Turtle Ecology Center for Training, Outreach, and Research, Inc. (ProTECTOR, Inc.), Loma Linda, California 92350 USA [; ]
| | | | - Nancy A. Collado
- School of Public Health, Loma Linda University, Loma Linda, California 92354 USA []
| | - Stephen G. Dunbar
- Protective Turtle Ecology Center for Training, Outreach, and Research, Inc. (ProTECTOR, Inc.), Loma Linda, California 92350 USA [; ]
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11
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Hays GC, Bailey H, Bograd SJ, Bowen WD, Campagna C, Carmichael RH, Casale P, Chiaradia A, Costa DP, Cuevas E, Nico de Bruyn PJ, Dias MP, Duarte CM, Dunn DC, Dutton PH, Esteban N, Friedlaender A, Goetz KT, Godley BJ, Halpin PN, Hamann M, Hammerschlag N, Harcourt R, Harrison AL, Hazen EL, Heupel MR, Hoyt E, Humphries NE, Kot CY, Lea JSE, Marsh H, Maxwell SM, McMahon CR, Notarbartolo di Sciara G, Palacios DM, Phillips RA, Righton D, Schofield G, Seminoff JA, Simpfendorfer CA, Sims DW, Takahashi A, Tetley MJ, Thums M, Trathan PN, Villegas-Amtmann S, Wells RS, Whiting SD, Wildermann NE, Sequeira AMM. Translating Marine Animal Tracking Data into Conservation Policy and Management. Trends Ecol Evol 2019; 34:459-473. [PMID: 30879872 DOI: 10.1016/j.tree.2019.01.009] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 11/18/2022]
Abstract
There have been efforts around the globe to track individuals of many marine species and assess their movements and distribution, with the putative goal of supporting their conservation and management. Determining whether, and how, tracking data have been successfully applied to address real-world conservation issues is, however, difficult. Here, we compile a broad range of case studies from diverse marine taxa to show how tracking data have helped inform conservation policy and management, including reductions in fisheries bycatch and vessel strikes, and the design and administration of marine protected areas and important habitats. Using these examples, we highlight pathways through which the past and future investment in collecting animal tracking data might be better used to achieve tangible conservation benefits.
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Affiliation(s)
| | - Helen Bailey
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD 20688, USA
| | - Steven J Bograd
- NOAA Southwest Fisheries Science Center, Environmental Research Division, Monterey, CA 93940, USA
| | - W Don Bowen
- Population Ecology Division, Bedford Institute of Oceanography, Dartmouth, NS B2Y 4A2, Canada
| | - Claudio Campagna
- Wildlife Conservation Society, Marine Program, Buenos Aires, 1414 Argentina
| | - Ruth H Carmichael
- University Programs, Dauphin Island Sea Lab, Dauphin Island, AL 36528, USA; Department of Marine Sciences, University of South Alabama, Mobile, AL 36688, USA
| | - Paolo Casale
- Department of Biology, University of Pisa, Pisa, Italy
| | - Andre Chiaradia
- Conservation Department, Phillip Island, Nature Parks, Victoria, Australia
| | - Daniel P Costa
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95060, USA
| | - Eduardo Cuevas
- CONACYT - Research Center of Environmental Sciences, Faculty of Natural Sciences, Universidad Autonoma del Carmen, Campeche 24180, Mexico; Pronatura Peninsula de Yucatan, Yucatan 97205, Mexico
| | - P J Nico de Bruyn
- Mammal Research Institute, Department of Zoology & Entomology, University of Pretoria, Hatfield 0028, South Africa
| | - Maria P Dias
- BirdLife International, Cambridge CB2 3QZ, UK; MARE - Marine and Environmental Sciences Center, ISPA - Instituto Universitário, 1149-041 Lisboa, Portugal
| | - Carlos M Duarte
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Thuwal, 23955-6900, Saudi Arabia
| | - Daniel C Dunn
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Peter H Dutton
- Marine Mammal and Turtle Division, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla, CA 92037, USA
| | - Nicole Esteban
- Department of Biosciences, Swansea University, Swansea SA2 8PP, Wales, UK
| | - Ari Friedlaender
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95060, USA; Institute for Marine Sciences, University of California Santa Cruz, Santa Cruz, CA 965060, USA
| | - Kimberly T Goetz
- National Institute of Water & Atmospheric Research Ltd (NIWA),Greta Point, Wellington, New Zealand
| | - Brendan J Godley
- Marine Turtle Research Group, Centre for Ecology and Conservation, School of Biosciences, University of Exeter, Cornwall Campus, Penryn TR10 9EZ, UK
| | - Patrick N Halpin
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Mark Hamann
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - Neil Hammerschlag
- Rosenstiel School of Marine & Atmospheric Science, Abess Center for Ecosystem Science & Policy, University of Miami, Miami, FL 33149, USA
| | - Robert Harcourt
- Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Autumn-Lynn Harrison
- Migratory Bird Center, Smithsonian Conservation Biology Institute, Washington, DC 20008, USA
| | - Elliott L Hazen
- NOAA Southwest Fisheries Science Center, Environmental Research Division, Monterey, CA 93940, USA
| | - Michelle R Heupel
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia
| | - Erich Hoyt
- Whale and Dolphin Conservation, Bridport, Dorset, UK; IUCN Joint SSC/WCPA Marine Mammal Protected Areas Task Force, Gland, Switzerland
| | - Nicolas E Humphries
- Marine Biological Association of the United Kingdom, The Laboratory, Plymouth PL1 2PB, UK
| | - Connie Y Kot
- Marine Geospatial Ecology Lab, Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - James S E Lea
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Helene Marsh
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - Sara M Maxwell
- School of Interdisciplinary Arts and Sciences, University of Washington, Bothell Campus, Bothell, WA 98011, USA
| | - Clive R McMahon
- Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia; Ecology and Biodiversity Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS 7004, Australia; Sydney Institute of Marine Science, Mosman, NSW 2088, Australia
| | - Giuseppe Notarbartolo di Sciara
- Tethys Research Institute, 20121 Milano, Italy; IUCN Joint SSC/WCPA Marine Mammal Protected Areas Task Force, Gland, Switzerland
| | - Daniel M Palacios
- Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, Newport, OR 97365, USA
| | - Richard A Phillips
- British Antarctic Survey, Natural Environment Research Council, Cambridge, CB3 0ET, UK
| | - David Righton
- Cefas Laboratory, Suffolk, NR33 0HT, UK; School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Gail Schofield
- School of Biological and Chemical Sciences, Queen Mary University of London, E14NS, London, UK
| | - Jeffrey A Seminoff
- Marine Turtle Ecology and Assessment Program, NOAA-Southwest Fisheries Science Center, La Jolla, CA 92037, USA
| | - Colin A Simpfendorfer
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - David W Sims
- Marine Biological Association of the United Kingdom, The Laboratory, Plymouth PL1 2PB, UK; Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Waterfront Campus, Southampton, SO14 3ZH, UK; Centre for Biological Sciences, Building 85, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
| | - Akinori Takahashi
- National Institute of Polar Research, Tachikawa, Tokyo 190-8518, Japan
| | - Michael J Tetley
- IUCN Joint SSC/WCPA Marine Mammal Protected Areas Task Force, Gland, Switzerland
| | - Michele Thums
- Australian Institute of Marine Science, Indian Ocean Marine Research Centre (M096), University of Western Australia, Crawley, WA 6009, Australia
| | - Philip N Trathan
- IUCN Joint SSC/WCPA Marine Mammal Protected Areas Task Force, Gland, Switzerland
| | - Stella Villegas-Amtmann
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95060, USA
| | - Randall S Wells
- Chicago Zoological Society's Sarasota Dolphin Research Program, c/o Mote Marine Laboratory, Sarasota, FL 34236, USA
| | - Scott D Whiting
- Marine Science Program, Department of Biodiversity, Conservation, and Attractions, Kensington, WA 6151, Australia
| | - Natalie E Wildermann
- Marine Turtle Research, Ecology and Conservation Group, Department of Earth, Ocean and Atmospheric, Science, Florida State University, Tallahassee, FL 32306-4320, USA
| | - Ana M M Sequeira
- IOMRC and The University of Western Australia Oceans Institute, School of Biological Sciences, University of Western Australia, Crawley, WA 6009, Australia
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Castelblanco-Martínez DN, Blanco-Parra MP, Charruau P, Prezas B, Zamora-Vilchis I, Niño-Torres CA. Detecting, counting and following the giants of the sea: a review of monitoring methods for aquatic megavertebrates in the Caribbean. WILDLIFE RESEARCH 2019. [DOI: 10.1071/wr19008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
The Caribbean is a mega-diverse and bio-geographically important region that consists of the Caribbean Sea, its islands, and surrounding coastlines. Among the billions of aquatic species inhabiting this region, the mega-vertebrates stand out for their social, economic and ecologic relevance. However, the Caribbean has been threatened by climate change, poverty, pollution, environmental degradation and intense growth of the tourism industry, affecting megafauna species directly and indirectly. Population monitoring plays a critical role in an informed conservation process and helps guide management decisions at several scales. The aim of the present review was to critically examine the methods employed for monitoring marine megafauna in the Caribbean, so as to create a framework for future monitoring efforts. In total, 235 documents describing protocols for the monitoring of sirenians, cetaceans, elasmobranchs, sea turtles and crocodilians in the Caribbean region, were reviewed. The methods included community-based monitoring (interviews, citizen science and fisheries monitoring), aerial surveys (by manned and unmanned aerial vehicles), boat-based surveys (including manta tow, and side-scan sonars), land-based surveys, acoustic monitoring, underwater surveys, baited remote underwater video, mark–recapture, photo-identification and telemetry. Monitoring efforts invested on aquatic megafauna in the Caribbean have been highly different, with some species and/or groups being prioritised over others. The present critical review provides a country-based overview of the current and emerging methods for monitoring marine megafauna and a critical evaluation of their known advantages, disadvantages and biases.
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13
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Behera S, Tripathy B, Choudhury BC, Sivakumar K. Movements of Olive Ridley Turtles (Lepidochelys olivacea) in the Bay of Bengal, India, Determined via Satellite Telemetry. CHELONIAN CONSERVATION AND BIOLOGY 2018. [DOI: 10.2744/ccb-1245.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Satyaranjan Behera
- Odisha Biodiversity Board, Regional Plant Resource Centre Campus, Nayapalli, Bhubaneswar-15, Odisha, India []
| | - Basudev Tripathy
- Zoological Survey of India, M-Block, New Alipore, Kolkata – 700 053, West Bengal, India []
| | | | - Kupuswamy Sivakumar
- Wildlife Institute of India, Chandrabani, Dehradun – 248 001, Uttarakhand, India []
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Cuevas E, Guzmán-Hernández V, Uribe-Martínez A, Raymundo-Sánchez A, Herrera-Pavon R. Identification of Potential Sea Turtle Bycatch Hotspots Using a Spatially Explicit Approach in the Yucatan Peninsula, Mexico. CHELONIAN CONSERVATION AND BIOLOGY 2018. [DOI: 10.2744/ccb-1263.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Eduardo Cuevas
- Pronatura Península de Yucatán, calle 32 #269 x 47 y 47ª, Col. Pinzon II C.P. 97205, Mérida, México []
| | - Vicente Guzmán-Hernández
- Área de Protección de Flora y Fauna Laguna de Términos, Comisión Nacional de Áreas Naturales Protegidas, Av. Adolfo López Mateos, Prolongación Playa Norte, C.P. 24140, Ciudad del Carmen, Campeche, México []
| | - Abigail Uribe-Martínez
- Posgrado en Geografía, Facultad de Filosofía y Letras, Universidad Nacional Autónoma de México, Ciudad Universitaria, Investigación Científica, Cd. Universitaria, 04510 Ciudad de México, CDMX []
| | - Ana Raymundo-Sánchez
- Pronatura Península de Yucatán, calle 32 #269 x 47 y 47ª, Col. Pinzon II C.P. 97205, Mérida, México []
| | - Roberto Herrera-Pavon
- El Colegio de la Frontera Sur, Unidad Chetumal, Av. del Centenario Km. 5.5, C.P. 7790 Chetumal, Mexico []
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Muñoz CC, Vermeiren P. Profiles of environmental contaminants in hawksbill turtle egg yolks reflect local to distant pollution sources among nesting beaches in the Yucatán Peninsula, Mexico. MARINE ENVIRONMENTAL RESEARCH 2018; 135:43-54. [PMID: 29395262 DOI: 10.1016/j.marenvres.2018.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 01/10/2018] [Accepted: 01/18/2018] [Indexed: 06/07/2023]
Abstract
Knowledge of spatial variation in pollutant profiles among sea turtle nesting locations is limited. This poses challenges in identifying processes shaping this variability and sets constraints to the conservation management of sea turtles and their use as biomonitoring tools for environmental pollutants. We aimed to increase understanding of the spatial variation in polycyclic aromatic hydrocarbon (PAH), organochlorine pesticide (OCP) and polychlorinated biphenyl (PCB) compounds among nesting beaches. We link the spatial variation to turtle migration patterns and the persistence of these pollutants. Specifically, using gas chromatography, we confirmed maternal transfer of a large number of compounds (n = 68 out of 69) among 104 eggs collected from 21 nests across three nesting beaches within the Yucatán Peninsula, one of the world's most important rookeries for hawksbill turtles (Eretmochelys imbricata). High variation in PAH profiles was observed among beaches, using multivariate correspondence analysis and univariate Peto-Prentice tests, reflecting local acquisition during recent migration movements. Diagnostic PAH ratios reflected petrogenic origins in Celestún, the beach closest to petroleum industries in the Gulf of Mexico. By contrast, pollution profiles of OCPs and PCBs showed high similarity among beaches, reflecting the long-term accumulation of these pollutants at regional scales. Therefore, spatial planning of protected areas and the use of turtle eggs in biomonitoring needs to account for the spatial variation in pollution profiles among nesting beaches.
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Tremblay N, Ortíz Arana A, González Jáuregui M, Rendón-von Osten J. Relationship between organochlorine pesticides and stress indicators in hawksbill sea turtle (Eretmochelys imbricata) nesting at Punta Xen (Campeche), Southern Gulf of Mexico. ECOTOXICOLOGY (LONDON, ENGLAND) 2017; 26:173-183. [PMID: 28025743 DOI: 10.1007/s10646-016-1752-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/30/2016] [Indexed: 06/06/2023]
Abstract
Data on the impact of environmental pollution on the homeostasis of sea turtles remains scarce, particularly in the Southern Gulf of Mexico. As many municipalities along the coastline of the Yucatan Peninsula do not rely on a waste treatment plant, these organisms could be particularly vulnerable. We searched for relationships between the presence of organochlorine pesticides (OCP) and the level of several oxidative and pollutant stress indicators of the hawksbill sea turtle (Eretmochelys imbricata) during the 2010 nesting season at Punta Xen (Campeche, Mexico). Of the 30 sampled sea turtles, endosulfans, aldrin related (aldrin, endrin, dieldrin, endrin ketone, endrin aldehyde) and dichlorodiphenyldichloroethylene (DDT) families were detected in 17, 21 and 26, respectively. Significant correlation existed between the size of sea turtles with the concentration of methoxychlor, cholinesterase activity in plasma and heptachlors family, and catalase activity and hexachlorohexane family. Cholinesterase activity in washed erythrocytes and lipid peroxidation were positively correlated with glutathione reductase activity. Antioxidant enzyme actions seem adequate as no lipids damages were correlated with any OCPs. Future studies are necessary to evaluate the effect of OCPs on males of the area due to the significant detection of methoxychlor, which target endocrine functioning and increases its concentration with sea turtles size.
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Affiliation(s)
- Nelly Tremblay
- Instituto EPOMEX, Universidad Autónoma de Campeche, Campeche, Campeche, Mexico
| | | | - Mauricio González Jáuregui
- Instituto EPOMEX, Universidad Autónoma de Campeche, Campeche, Campeche, Mexico
- Biología y Conservación de Vertebrados, Instituto de Ecología, A.C. Carretera antigua a Coatepec 351, El Haya, Xalapa, 91070, Veracruz, Mexico
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Hernández-Fernández J, Beltrán-Torres G, Mariño-Ramírez L. Complete mitochondrial genome of the nesting Colombian Caribbean Hawksbill Turtle. MITOCHONDRIAL DNA PART B-RESOURCES 2017; 2:128-129. [PMID: 30370335 PMCID: PMC6200328 DOI: 10.1080/23802359.2017.1292477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/29/2022]
Abstract
The hawksbill turtle, Eretmochelis imbricata (Linnaeus, 1766), is an endangered sea turtle in Colombian Caribbean beach. In this study, we report the complete mitochondrial DNA sequences of hawksbill turtle. The entire genome comprised 16,386 base pairs, and a nucleotide frequency of T: 25.6%, C: 26.9%, A: G 35.4% and 12.1%. The mitogenome sequence of hawksbill turtle would contribute to better understand population genetics, and evolution of sea turtles. Molecule was deposited at the GenBank database under the accession number KP221806.
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Affiliation(s)
- Javier Hernández-Fernández
- Deparment of Natural and Environmental Science, Marine Biology Program, Faculty of Science and Engineering, Genetics, Molecular Biology and Bioinformatic Research Group-GENBIMOL, Jorge Tadeo Lozano University, Bogotá, Colombia
| | - Gerson Beltrán-Torres
- Deparment of Natural and Environmental Science, Marine Biology Program, Faculty of Science and Engineering, Genetics, Molecular Biology and Bioinformatic Research Group-GENBIMOL, Jorge Tadeo Lozano University, Bogotá, Colombia
| | - Leonardo Mariño-Ramírez
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, USA
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Revuelta O, Hawkes L, León YM, Godley BJ, Raga JA, Tomás J. Evaluating the importance of Marine Protected Areas for the conservation of hawksbill turtles Eretmochelys imbricata nesting in the Dominican Republic. ENDANGER SPECIES RES 2015. [DOI: 10.3354/esr00660] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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McCauley DJ, Pinsky ML, Palumbi SR, Estes JA, Joyce FH, Warner RR. Marine defaunation: Animal loss in the global ocean. Science 2015; 347:1255641. [PMID: 25593191 DOI: 10.1126/science.1255641] [Citation(s) in RCA: 411] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Douglas J McCauley
- Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA.
| | - Malin L Pinsky
- Department of Ecology, Evolution, and Natural Resources, Institute of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901, USA
| | - Stephen R Palumbi
- Department of Biology, Stanford University, Hopkins Marine Station, Pacific Grove, CA 93950, USA
| | - James A Estes
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95060, USA
| | - Francis H Joyce
- Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA
| | - Robert R Warner
- Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA
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Blanco GS, Morreale SJ, Bailey H, Seminoff JA, Paladino FV, Spotila JR. Post-nesting movements and feeding grounds of a resident East Pacific green turtle Chelonia mydas population from Costa Rica. ENDANGER SPECIES RES 2012. [DOI: 10.3354/esr00451] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Hoenner X, Whiting SD, Hindell MA, McMahon CR. Enhancing the use of Argos satellite data for home range and long distance migration studies of marine animals. PLoS One 2012; 7:e40713. [PMID: 22808241 PMCID: PMC3395646 DOI: 10.1371/journal.pone.0040713] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Accepted: 06/12/2012] [Indexed: 11/24/2022] Open
Abstract
Accurately quantifying animals’ spatial utilisation is critical for conservation, but has long remained an elusive goal due to technological impediments. The Argos telemetry system has been extensively used to remotely track marine animals, however location estimates are characterised by substantial spatial error. State-space models (SSM) constitute a robust statistical approach to refine Argos tracking data by accounting for observation errors and stochasticity in animal movement. Despite their wide use in ecology, few studies have thoroughly quantified the error associated with SSM predicted locations and no research has assessed their validity for describing animal movement behaviour. We compared home ranges and migratory pathways of seven hawksbill sea turtles (Eretmochelys imbricata) estimated from (a) highly accurate Fastloc GPS data and (b) locations computed using common Argos data analytical approaches. Argos 68th percentile error was <1 km for LC 1, 2, and 3 while markedly less accurate (>4 km) for LC ≤0. Argos error structure was highly longitudinally skewed and was, for all LC, adequately modelled by a Student’s t distribution. Both habitat use and migration routes were best recreated using SSM locations post-processed by re-adding good Argos positions (LC 1, 2 and 3) and filtering terrestrial points (mean distance to migratory tracks ± SD = 2.2±2.4 km; mean home range overlap and error ratio = 92.2% and 285.6 respectively). This parsimonious and objective statistical procedure however still markedly overestimated true home range sizes, especially for animals exhibiting restricted movements. Post-processing SSM locations nonetheless constitutes the best analytical technique for remotely sensed Argos tracking data and we therefore recommend using this approach to rework historical Argos datasets for better estimation of animal spatial utilisation for research and evidence-based conservation purposes.
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Affiliation(s)
- Xavier Hoenner
- Research Institute for Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory, Australia.
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Berube MD, Dunbar SG, Rützler K, Hayes WK. Home Range and Foraging Ecology of Juvenile Hawksbill Sea Turtles (Eretmochelys imbricata) on Inshore Reefs of Honduras. CHELONIAN CONSERVATION AND BIOLOGY 2012. [DOI: 10.2744/ccb-0898.1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Marcovaldi MÂ, Lopez GG, Soares LS, López-Mendilaharsu M. Satellite tracking of hawksbill turtles Eretmochelys imbricata nesting in northern Bahia, Brazil: turtle movements and foraging destinations. ENDANGER SPECIES RES 2012. [DOI: 10.3354/esr00421] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Horrocks JA, Krueger BH, Fastigi M, Pemberton EL, Eckert KL. International Movements of Adult Female Hawksbill Turtles (Eretmochelys imbricata): First Results from the Caribbean's Marine Turtle Tagging Centre. CHELONIAN CONSERVATION AND BIOLOGY 2011. [DOI: 10.2744/ccb-0875.1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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