Title
Natal foraging philopatry in eastern pacific hawksbill turtles
Date Issued
23 August 2017
Access level
open access
Resource Type
journal article
Author(s)
Gaos A.R.
Lewison R.L.
Jensen M.P.
Liles M.J.
Henriquez A.
Chavarria S.
Pacheco C.M.
Valle M.
Melero D.
Gadea V.
Altamirano E.
Torres P.
Vallejo F.
Miranda C.
LeMarie C.
Lucero J.
Oceguera K.
Chácon D.
Fonseca L.
Abrego M.
Seminoff J.A.
Flores E.E.
Llamas I.
Donadi R.
Peña B.
Muñoz J.P.
Ruales D.A.
Chaves J.A.
Otterstrom S.
Zavala A.
Hart C.E.
Brittain R.
Mangel J.
Yañez I.L.
Dutton P.H.
Publisher(s)
Royal Society Publishing
Abstract
The complex processes involved with animalmigration have long been a subject of biological interest, and broad-scale movement patterns of many marine turtle populations still remain unresolved. While it is widely accepted that once marine turtles reach sexual maturity they home to natal areas for nesting or reproduction, the role of philopatry to natal areas during other life stages has received less scrutiny, despite widespread evidence across the taxa. Here we report on genetic research that indicates that juvenile hawksbill turtles (Eretmochelys imbricata) in the eastern Pacific Ocean use foraging grounds in the region of their natal beaches, a pattern we term natal foraging philopatry. Our findings confirm that traditional views of natal homing solely for reproduction are incomplete and that many marine turtle species exhibit philopatry to natal areas to forage. Our results have important implications for life-history research and conservation of marine turtles and may extend to other wide-ranging marine vertebrates that demonstrate natal philopatry.
Volume
4
Issue
8
Language
English
OCDE Knowledge area
Ecología
Subjects
Scopus EID
2-s2.0-85028319322
Source
Royal Society Open Science
ISSN of the container
20545703
Sponsor(s)
Ethics. All hawksbill handling procedures were approved (APF no.: 09-05-015 L—San Diego State University) by the Institutional Animal Care and Use Committee (IACUC) in accordance with the requirements pertaining to animal subjects protections within the Public Health Service Policy and USDA Animal Welfare Regulations. Scientific permits to collect hawksbill tissue samples were obtained in all countries and include the following permit numbers: Mexico (SGPA/DGVS: 03540/08, 03650/09, 04568/11, 05137/12, 02259/14, 04478/15, 07584/16), Guatemala (004/2014), El Salvador (MARN: AIMA-38-2008, DGOA-GE-089-2012, DGBPN-GVS-016-2013, DEV-GVS-17-2015), Nicaragua (003-012010, 008-042011, 003-012012, 006-062013, 001-012014, 006042015, 009-2016), Costa Rica (481-2012, ACG-PI-012-2014), Panama (SE/A-77-14, SE/A-17-15), Ecuador (011-DRM-MA, MAE-CGZ4-DPAM-2014-3286, MAE-DPASE-2016-0152, PC-35-12) and Peru (068-2004-INRENA-IFFS-DCB). Tissue import (United States (US844694/9)) and export (sample collection country) permits to meet requirements established by CITES were acquired from the appropriate environmental authorities in each country, including CONANP in Mexico (MX 75768), MARN in Guatemala (000653), MARN in El Salvador (09977), MARENA in Nicaragua (11357), MINAET in Costa Rica (2015-CR1764/SJ (#S 1824)), ANAM in Panama (SEXA-06-11), MAE in Ecuador (106/BG) and MINAM in Peru (6275). All research participants received consent from the aforementioned environmental authorities in their respective countries. Data accessibility. The input files used in the MSA are available via the Dryad repository at: (http://dx.doi.org/10. 5061/dryad.38t23) [56]. The sequence files used in this analysis (GenBank accession numbers: KT934080, KT934070, KT964296, KR012503, KR012504, KT003685, KT072795, KR012505, KT072797, KU695258, KU695259, KX646708, KT934051) are available through the GenBank database (http://www.ncbi.nlm.nih.gov). Authors’ contributions. A.R.G. carried out laboratory work and drafted the manuscript; R.L.L., P.H.D., M.J.L., M.P.J., J.A.S., J.A.-S. and J.M. helped develop the manuscript; A.R.G. and M.P.J. conducted the analyses; A.R.G., M.J.L., A.H., S.C., C.M.P., M.V., D.M., V.G., E.A., P.T., F.V., C.M., C.L., J.L., K.O., D.C., L.F., M.A., J.A.S., E.E.F., I.L., R.D., B.P., J.P.M., D.A.R., J.A.C., S.O., A.Z., C.E.H., R.B., J.A.-S., J.M. and I.L.Y. collected field data. Competing interests. We declare we have no competing interests. Funding. We acknowledge and thank the Southwest Fisheries Science Center (NMFS-NOAA) for processing and analytical support, as well as the Galapagos Science Center/Universidad San Francisco de Quito for supplementary laboratory processing of samples from Ecuador. We recognize the financial contributions from several organizations that enabled the operation of the hawksbill conservation projects during which the samples presented in this paper were collected, including the National Fish and Wildlife Foundation (NFWF), US Fish & Wildlife Service (USFWS), International Seafood Sustainability Foundation (ISSF), William H. Donnor Foundation and SeeTurtles.org. This research was also funded in part by a grant from the Pacific Rim Research Program of the University of California. Acknowledgements. We thank the following individuals: Brad Nahill, Hoyt Peckham, Neftali Sanchez, Obed Rivera, Luis Manzanares, Liza Gonzalez, Jacinto Rodriguez, Luis Mera, Ricardo Gonzáles, Gabriela Serra-Valente, Amy Lanci, Erin LaCasella and Amy Frey. We recognize the following groups and organizations for logistical support: Hoteles de Guayabitos, ?!Careyes Foundation, Comité Carey de la Bahía de Jiquilisco, Comité Carey de la Reserva Natural Estero Padre Ramos, Fundarrecife, Manta Raya Hospedaje, Machalilla National Park and The Ocean Foundation for additional logistical support.
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