scholarly journals Hawksbill turtles Eretmochelys imbricata in El Salvador: nesting distribution and mortality at the largest remaining nesting aggregation in the eastern Pacific Ocean

2011 ◽  
Vol 14 (1) ◽  
pp. 23-30 ◽  
Author(s):  
MJ Liles ◽  
MV Jandres ◽  
WA López ◽  
GI Mariona ◽  
CR Hasbún ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
El Salvador ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Eretmochelys Imbricata ◽  
Hawksbill Turtles ◽  
Nesting Aggregation

scholarly journals Hematology, biochemistry, and toxicology of wild hawksbill turtles (Eretmochelys imbricata) nesting in mangrove estuaries in the eastern Pacific Ocean

2017 ◽  
Author(s):  
Aubrey M. Tauer ◽  
Michael J. Liles ◽  
Sofía Chavarría ◽  
Melissa Valle ◽  
Sada Amaya ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Pacific Ocean ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Sea Turtle ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Eretmochelys Imbricata ◽  
Mangrove Estuary ◽  
Hawksbill Turtles

AbstractSea turtles are a keystone species and are highly sensitive to changes in their environment, making them excellent environmental indicators. In light of environmental and climate changes, species are increasingly threatened by pollution, changes in ocean health, habitat alteration, and plastic ingestion. There may be additional health related threats and understanding these threats is key in directing future management and conservation efforts, particularly for severely reduced sea turtle populations. Hawksbill turtles (Eretmochelys imbricata) are critically endangered, with those in the eastern Pacific Ocean (Mexico–Peru) considered one of the most threatened sea turtle populations in the world. This study establishes baseline health parameters in hematology and blood biochemistry as well as tested for heavy metals and persitent organic pollutants in eastern Pacific hawksbills at a primary nesting colony located in a mangrove estuary. Whereas hematology and biochemistry results are consistent with healthy populations of other species of sea turtles, we identified differences in packed cell volume, heterophils and lympohcyte counts, and glucose when comparing our data to other adult hawksbill analysis (1), (2), (3). Our analysis of heavy metal contamination revealed a mean blood level of 0.245 ppm of arsenic, 0.045 ppm of lead, and 0.008 ppm of mercury. Blood levels of persistent organic pollutants were below the laboratory detection limit for all turtles. Our results suggest that differences in the feeding ecology of eastern Pacific hawksbills in mangrove estuaries may make them less likely to accumulate persistent organic pollutants and heavy metals in their blood. These baseline data on blood values in hawksbills nesting within a mangrove estuary in the eastern Pacific offer important guidance for health assessments of the species in the wild and in clinical rehabilitation facilities, and underscore the importance of preventing contamination from point and non-point sources in mangrove estuaries, which represent primary habitat to hawksbills and myriad other marine species in the eastern Pacific Ocean.

Rookery contributions, movements and conservation needs of hawksbill turtles at foraging grounds in the eastern Pacific Ocean

2018 ◽  
Vol 586 ◽  
pp. 203-216 ◽  
Author(s):  
AR Gaos ◽  
RL Lewison ◽  
MP Jensen ◽  
MJ Liles ◽  
A Henriquez ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Hawksbill Turtles

Dive behaviour of adult hawksbills (Eretmochelys imbricata, Linnaeus 1766) in the eastern Pacific Ocean highlights shallow depth use by the species

2012 ◽  
Vol 432-433 ◽  
pp. 171-178 ◽  
Author(s):  
Alexander R. Gaos ◽  
Rebecca R. Lewison ◽  
Bryan P. Wallace ◽  
Ingrid L. Yañez ◽  
Michael J. Liles ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Shallow Depth ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Eretmochelys Imbricata ◽  
Dive Behaviour ◽  
Depth Use

scholarly journals Signs of hope in the eastern Pacific: international collaboration reveals encouraging status for a severely depleted population of hawksbill turtles Eretmochelys imbricata

Oryx ◽  
2010 ◽  
Vol 44 (4) ◽  
pp. 595-601 ◽  
Author(s):  
Alexander R. Gaos ◽  
F.A. Abreu-Grobois ◽  
J. Alfaro-Shigueto ◽  
D. Amorocho ◽  
R. Arauz ◽  
...  
Keyword(s):  
El Salvador ◽  
Working Group ◽  
Eastern Pacific ◽  
Marine Turtle ◽  
Current Status ◽  
Eretmochelys Imbricata ◽  
Conservation Projects ◽  
Available Information ◽  
Nesting Activity ◽  
Hawksbill Turtles

AbstractWhile little is known about hawksbill turtles Eretmochelys imbricata in the eastern Pacific Ocean, available information suggests that the population has declined substantially in recent decades and could be near extirpation in the region. To evaluate the current status of the population more effectively and to determine the feasibility of recovery efforts, a workshop of regional marine turtle specialists was held in June 2008 in Los Cóbanos, El Salvador. An international working group, Iniciativa Carey del Pacífico Oriental (ICAPO; Eastern Pacific Hawksbill Initiative in English), was established to consolidate information, promote conservation projects and raise awareness about the species. We present information derived from the workshop and compiled by the ICAPO working group since that time. Considering only records from 1 January 2007 to 31 May 2009 it appears that El Salvador hosts the majority of known hawksbill turtle nesting activity in the eastern Pacific, with 79.6% (n = 430) of all nesting observation records, and Mexico hosts the majority of records of hawksbill turtles at sea, with 60.3% (n = 44) of all in-water observation records. Although current abundance is very low, the pervasiveness of the species in the region suggests potential for conservation and recovery. Despite a historical paucity of research focusing on this population, the relatively large and steadily increasing number of records as a result of concerted efforts demonstrates the viability of the ICAPO network as an instrument to promote conservation of this species in the eastern Pacific.

scholarly journals Distribution, size range and growth rates of hawksbill turtles at a major foraging ground in the eastern Pacific Ocean

2017 ◽  
Vol 45 (3) ◽  
pp. 597-605 ◽  
Author(s):  
Israel Llamas ◽  
Eric Flores ◽  
Marino Abrego ◽  
Jeffrey Seminoff ◽  
Catherine Hart ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Growth Rates ◽  
Size Range ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Hawksbill Turtles

One size does not fit all: Importance of adjusting conservation practices for endangered hawksbill turtles to address local nesting habitat needs in the eastern Pacific Ocean

2015 ◽  
Vol 184 ◽  
pp. 405-413 ◽  
Author(s):  
Michael J. Liles ◽  
Markus J. Peterson ◽  
Jeffrey A. Seminoff ◽  
Eduardo Altamirano ◽  
Ana V. Henríquez ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Eastern Pacific ◽  
Conservation Practices ◽  
Eastern Pacific Ocean ◽  
Nesting Habitat ◽  
Hawksbill Turtles

scholarly journals New distribution record of Megalops atlanticus Valenciennes, 1847 (Elopiformes, Megalopidae) in El Salvador, Eastern Pacific Ocean

Check List ◽  
2018 ◽  
Vol 14 (5) ◽  
pp. 933-935 ◽  
Author(s):  
José Enrique Barraza
Keyword(s):  
Pacific Ocean ◽  
El Salvador ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Tropical Eastern Pacific ◽  
Species Occurrence ◽  
Regional Monitoring ◽  
Megalops Atlanticus ◽  
Distribution Record ◽  
New Distribution

A new geographical distribution record of an Atlantic Ocean species, Megalops atlanticus Valenciennes, 1847, is reported on the Tropical Eastern Pacific Ocean based on 2 incidental captures by local fishermen at the Acajutla city, El Salvador. Two photographs, which give clear evidence of this species, demonstrate the increasing range of M. atlanticus in the Tropical Eastern Pacific. Regional monitoring of this species occurrence is recommended.

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