scholarly journals Diatoms and Other Epibionts Associated with Olive Ridley (Lepidochelys olivacea) Sea Turtles from the Pacific Coast of Costa Rica

PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0130351 ◽  
Author(s):  
Roksana Majewska ◽  
Mario Santoro ◽  
Federico Bolaños ◽  
Gerardo Chaves ◽  
Mario De Stefano
Keyword(s):  
Costa Rica ◽  
Pacific Coast ◽  
Sea Turtles ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
The Pacific

scholarly journals Some digenetic trematodes of the olive ridley sea turtle, Lepidochelys olivacea (Testudines, Cheloniidae) in Costa Rica

2007 ◽  
Vol 44 (1) ◽  
pp. 25-28 ◽  
Author(s):  
M. Santoro ◽  
J. Morales
Keyword(s):  
Costa Rica ◽  
Urinary Bladder ◽  
Pacific Coast ◽  
Sea Turtle ◽  
Histopathological Changes ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
Digenetic Trematodes ◽  
The Pacific

AbstractThree species of digeneans including 1 Gorgoderidae (Plesiochorus cymbiformis) from the urinary bladder, 1 Plagiorchiidae (Enodiotrema megachondrus) from the duodenum, and 1 Pachypsolidae (Pachypsolus irroratus) from the stomach were recovered from 2 of 3 olive ridley turtles (Lepidochelys olivacea) found stranded along the Pacific coast of Costa Rica. All trematodes represent new locality records. Histopathological changes associated with eggs of cardiovascular flukes (Digenea, Spirorchiidae) were described from the lungs, spleen, and intestine of a single turtle.

scholarly journals Chelonicola and Poulinea, two new gomphonemoid diatom genera (Bacillariophyta) living on marine turtles from Costa Rica

Phytotaxa ◽  
2015 ◽  
Vol 233 (3) ◽  
pp. 236 ◽  
Author(s):  
Roksana Majewska ◽  
J. P. Kociolek ◽  
Evan W. Thomas ◽  
Mario De Stefano ◽  
Mario Santoro ◽  
...  
Keyword(s):  
Costa Rica ◽  
Marine Mammals ◽  
Sea Turtles ◽  
Sea Turtle ◽  
New Genera ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
Marine Turtles ◽  
The Family ◽  
Long Time

Marine mammals such as whales and dolphins have been known for a long time to host a very specific epizoic community on their skin. Less known however is the presence of a similar community on the carapaces of sea turtles. The present study is the first describing new taxa inhabiting sea turtle carapaces. Samples, collected from nesting olive ridley sea turtles (Lepidochelys olivacea) on Ostional Beach (Costa Rica), were studied using light and scanning electron microscopy. Two unknown small-celled gomphonemoid taxa were analysed in more detail and are described as two new genera, closely related to other gomphonemoid genera with septate girdle bands, such as Tripterion, Cuneolus and Gomphoseptatum. Chelonicola Majewska, De Stefano & Van de Vijver gen. nov. has a flat valve face, uniseriate striae composed of more than three areolae, simple external raphe endings, internally a siliceous flap over the proximal raphe endings and lives on mucilaginous stalks. Poulinea Majewska, De Stefano & Van de Vijver gen. nov. has at least one concave valve, uniseriate striae composed of only two elongated areolae, external distal raphe endings covered by thickened siliceous flaps and lives attached to the substrate by a mucilaginous pad. Chelonicola costaricensis Majewska, De Stefano & Van de Vijver sp. nov. and Poulinea lepidochelicola Majewska, De Stefano & Van de Vijver sp. nov. can be separated based on stria structure, girdle structure composed of more than 10 copulae, raphe structure and general valve outline. A cladistics analysis of putative members of the Rhoicospheniaceae indicates that the family is polyphyletic. Chelonicola and Poulinea are sister taxa, and form a monophyletic group with Cuneolus and Tripterion, but are not closely related to Rhoicosphenia, or other genera previously assigned to this family. Features used to help diagnose the family such as symmetry and presence of septa and pseudosepta are homoplastic across the raphid diatom tree of life.

scholarly journals First field observation of the predation by Jaguar (Panthera onca) on Olive Ridley sea turtle (Lepidochelys olivacea) at Nancite Beach, Santa Rosa National Park, Costa Rica

2016 ◽  
Vol 3 (1) ◽  
pp. 20-23
Author(s):  
Sergio Escobar-Lasso ◽  
Luis Fonseca ◽  
Wilbert N. Villachica ◽  
Hansel Herrera ◽  
Roldán A. Valverde ◽  
...  
Keyword(s):  
Costa Rica ◽  
Sea Turtles ◽  
Chelonia Mydas ◽  
Sea Turtle ◽  
Dermochelys Coriacea ◽  
Olive Ridley ◽  
Eretmochelys Imbricata ◽  
Lepidochelys Olivacea ◽  
Santa Rosa National Park ◽  
Key Resources

Jaguars have been recorded preying on adult female sea turtles on their nesting beaches in Costa Rica, Guyana, Mexico and Suriname (Fretey 1977, Autar 1994, Cuevas et al. 2014, Guildera et al. 2015). Jaguars prey on Green (Chelonia mydas), Olive Ridley (Lepidochelys olivacea), Hawksbill (Eretmochelys imbricata), and Leatherback (Dermochelys coriacea) sea turtles (see Fretey 1977, Autar 1994, Carrillo et al. 1994, Chinchilla 1997, Tröeng 2000, Heithaus et al. 2008, Veríssimo et al. 2012, Arroyo-Arce et al. 2014, Cuevas et al. 2014, Arroyo-Arce & Salom-Pérez 2015, Guildera et al. 2015). The capture effort and risk of injury associated with the predation of nesting sea turtles is expected to be lower relative to other prey species in the jaguar’s diet (Cavalcanti & Gese 2010). Additionally, they can be key resources when other pr ey availability is low (Veríssimo et al. 2012).

Sources of Vibrio mimicus Contamination of Turtle Eggs

1999 ◽  
Vol 65 (1) ◽  
pp. 336-338 ◽  
Author(s):  
María T. Acuña ◽  
Gerardo Díaz ◽  
Hilda Bolaños ◽  
Candy Barquero ◽  
Olga Sánchez ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Costa Rica ◽  
Sea Turtles ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
Vibrio Mimicus ◽  
Olive Ridley Sea Turtles

ABSTRACT Vibrio mimicus contamination of sand increased significantly during the arrival of the olive ridley sea turtles (Lepidochelys olivacea) at Ostional anidation beach, Costa Rica. Statistical analysis supports that eggs are contaminated withV. mimicus by contact with the sand nest. V. mimicus was isolated from eggs of all nests tested, andctxA + strains were found in 31% of the nests, all of which were near the estuary.

Assortative epibiosis of leatherback, olive ridley and green sea turtles in the Eastern Tropical Pacific

2016 ◽  
Vol 97 (6) ◽  
pp. 1233-1240 ◽  
Author(s):  
Nathan J. Robinson ◽  
Eric A. Lazo-Wasem ◽  
Frank V. Paladino ◽  
John D. Zardus ◽  
Theodora Pinou
Keyword(s):  
Pacific Coast ◽  
Sea Turtles ◽  
Eastern Tropical Pacific ◽  
Olive Ridley ◽  
Leatherback Turtle ◽  
Green Sea Turtles ◽  
Green Turtles ◽  
East Pacific ◽  
Single Location ◽  
The Pacific

Sea turtles host a diverse array of epibionts, yet it is not well understood what factors influence epibiont community composition. To test whether epibiont communities of sea turtles are influenced by the hosts’ nesting or foraging habitats, we characterized the epibiota of leatherback, olive ridley and green turtles nesting at a single location on the Pacific coast of Costa Rica. We also compared the epibiota of these turtles to conspecific populations nesting elsewhere in the East Pacific. If epibiont communities are influenced by nesting habitats, we predicted that sympatrically nesting turtles would have comparable epibiont taxa. Alternatively, if epibiont communities are influenced by foraging habitats, we predicted the diversity of epibiont taxa should reflect the type and diversity of the hosts’ foraging habitats. We identified 18 epibiont taxa from 18 leatherback, 19 olive ridley and six green turtles. Epibiont diversity was low on leatherbacks (four taxa), but higher for olive ridley and green turtles (12 and nine epibiont taxa respectively). The epibiont communities of olive ridley and green turtles were not statistically different, but both were different from leatherbacks. In addition, conspecific sea turtles from other nesting locations hosted more similar epibiont communities than sympatrically nesting, non-conspecifics. We conclude that epibiont diversity of nesting sea turtles is partially linked to the diversity of their foraging habitats. We also conclude that the surface properties of the skin and carapace of these turtles may contribute to the uniqueness of leatherback turtle epibiont communities and the similarities between olive ridley and green turtle epibiont communities.

Downward but Stable Trend in the Abundance of Arribada Olive Ridley Sea Turtles (Lepidochelys olivacea) at Nancite Beach, Costa Rica (1971–2007)

2009 ◽  
Vol 8 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Luis G. Fonseca ◽  
Grettel A. Murillo ◽  
Lenín Guadamúz ◽  
Romeo M. Spínola ◽  
Roldán A. Valverde
Keyword(s):  
Costa Rica ◽  
Sea Turtles ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
Olive Ridley Sea Turtles

Biochemical Parameter Analysis of Rescued Olive Ridley Sea Turtles (Lepidochelys olivacea)

2020 ◽  
Author(s):  
A. Ramakrishnan ◽  
M. Palanivelrajan ◽  
D. Sumathi ◽  
K. Senthilkumar
Keyword(s):  
Biochemical Parameters ◽  
Sea Turtles ◽  
Sea Turtle ◽  
Parameter Analysis ◽  
Published Data ◽  
Olive Ridley ◽  
Turtle Species ◽  
Lepidochelys Olivacea ◽  
The Pacific ◽  
Olive Ridley Sea Turtles

Background: The olive ridley sea turtle also known as the Pacific ridley sea turtle is a medium-sized species of turtle found in warm and tropical waters, primarily in the Pacific and Indian Oceans. Sea Turtles are an integral part of coastal and marine ecosystems, they have also been fundamental to the culture of coastal societies for millennia. But human activities over the past 200 years have massively tipped the scales against the survival of these ancient mariners, despite its conservation status the olive ridley are considered vulnerable. The aim of the study was to collect biochemical data on olive ridley sea turtles while drawing comparisons with previous published data on sea turtles. Methods: This research work was carried out in rescued Olive Ridley Sea Turtles (Lepidochelys olivacea) which were stranded or rescued during various periods of breeding season from September, 2017 to April, 2018 by Trust for Environmental and Education (TREE) foundation, Vettuvankeni, Chennai, Tamil Nadu. The Clinical samples were collected from 7 sea turtles in rescue centers and examined for biochemical parameters analysis. The biochemical parameters measured were Glucose, cholesterol, Total protein, albumin and globulin, Blood Urea Nitrogen (BUN), Creatinine, Alanine Aminotransferase (ALT), Calcium and Phosphorus. The statistical analyses of data were carried out by using student’s t-test. Result: The results of this study were more or less unfailing with previous studies but variations with other studies may result from values depends upon the geospatial distribution such as species, age, sex, season, sample site, nutrition and management condition. The data in this research was more specific to olive ridley sea turtles, indicating need to standardize reference values because of little know data on these turtle species, which are intended for health evaluation for free-ranging and captive/rescued sea turtles.

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