Plesiochorus cymbiformis (Rudolphi, 1819) Looss, 1901 (Digenea: Gorgoderidae) in Olive Ridley Sea turtles Lepidochelys olivacea (Eschscholtz, 1829) (Testudines: Chelonidae) from the Brazilian coast: New geographic occurrence and associated injuries

Summary The present study reports the first occurrence of Plesiochorus cymbiformis (Digenea: Gorgoderidae), in two Olive Ridley Sea turtles Lepidochelys olivacea (Testudines: Chelonidae), from the states of São Paulo and Sergipe in Brazilian coast. Concerning the Neotropical region, P. cymbiformis has been previously reported in green sea turtles (Chelonia mydas) from Panama and Brazil, in loggerhead sea turtles (Caretta caretta) from Brazil, in hawksbill sea turtles (Eretmochelys imbricata) from Puerto Rico, and in Olive Ridley Sea turtles only in Costa Rica. Lesions resulting from the presence of parasites in the hosts’ urinary bladders are also presented. This is the second report on endoparasites in Olive Ridley sea turtles from Brazil.

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Checklist of sea turtles endohelminth in Neotropical region

Helminthologia ◽

10.1515/helmin-2016-0045 ◽

2016 ◽

Vol 53 (3) ◽

pp. 211-223 ◽

Cited By ~ 5

Author(s):

M. R. Werneck ◽

R. J. Da Silva

Keyword(s):

Sea Turtles ◽

Loggerhead Turtle ◽

Chelonia Mydas ◽

Neotropical Region ◽

Dermochelys Coriacea ◽

Olive Ridley ◽

Eretmochelys Imbricata ◽

Leatherback Turtle ◽

Lepidochelys Olivacea ◽

The Caribbean

SummaryThis paper presents a list of parasites described in sea turtles from the Neotropical region. Through the review of literature the occurrence of 79 taxa of helminthes parasites were observed, mostly consisting of the Phylum Platyhelminthes with 76 species distributed in 14 families and 2 families of the Phylum Nematoda within 3 species. Regarding the parasite records, the most studied host was the green turtle (Chelonia mydas) followed by the hawksbill turtle (Eretmochelys imbricata), olive ridley turtle (Lepidochelys olivacea), loggerhead turtle (Caretta caretta) and leatherback turtle (Dermochelys coriacea). Overall helminths were reported in 12 countries and in the Caribbean Sea region. This checklist is the largest compilation of data on helminths found in sea turtles in the Neotropical region.

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First report of Pyelosomum cochlear (Digenea: Pronocephalidae) in a Hawksbill Turtle – Eretmochelys imbricata L. found in Brazilian Coast

Helminthologia ◽

10.2478/helm-2019-0024 ◽

2019 ◽

Vol 56 (4) ◽

pp. 334-337

Author(s):

M. R. Werneck ◽

R. Velloso ◽

P. B. Costa Das Chagas ◽

H. Jerdy Leandro ◽

R. Martins De Amorim

Keyword(s):

Green Turtle ◽

Present Note ◽

Chelonia Mydas ◽

Brazilian Coast ◽

Olive Ridley ◽

Eretmochelys Imbricata ◽

Lepidochelys Olivacea ◽

First Occurrence ◽

The Usa ◽

Olive Ridley Turtle

SummaryPyelosomum cochlearLooss 1899 (Digenea: Pronocephalidae) is a parasite exclusive to sea turtles, having been described in the green turtle (Chelonia mydas) in Egypt, the USA, Panama, Costa Rica and Brazil as well as the olive ridley turtle (Lepidochelys olivacea) in Brazil. The present note describes the first occurrence of P. cochlear in a hawksbill turtle (Eretmochelys imbricata) found on the coast of Brazil.

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The characterization of cytosolic glutathione transferase from four species of sea turtles: Loggerhead (Caretta caretta), green (Chelonia mydas), olive ridley (Lepidochelys olivacea), and hawksbill (Eretmochelys imbricata)

Comparative Biochemistry and Physiology Part C Toxicology & Pharmacology ◽

10.1016/j.cbpc.2009.05.005 ◽

2009 ◽

Vol 150 (2) ◽

pp. 279-284 ◽

Cited By ~ 10

Author(s):

Kristine L. Richardson ◽

Gerardo Gold-Bouchot ◽

Daniel Schlenk

Keyword(s):

Glutathione Transferase ◽

Sea Turtles ◽

Chelonia Mydas ◽

Caretta Caretta ◽

Olive Ridley ◽

Eretmochelys Imbricata ◽

Lepidochelys Olivacea ◽

Cytosolic Glutathione

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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

Mammalogy Notes ◽

10.47603/manovol3n1.20-23 ◽

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).

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Plastic ingestion by sea turtles in Paraíba State, Northeast Brazil

Iheringia Série Zoologia ◽

10.1590/1678-476620151053265270 ◽

2015 ◽

Vol 105 (3) ◽

pp. 265-270 ◽

Cited By ~ 12

Author(s):

Camila Poli ◽

Daniel Oliveira Mesquita ◽

Cinthia Saska ◽

Rita Mascarenhas

Keyword(s):

Gastrointestinal Tract ◽

Carapace Length ◽

Sea Turtles ◽

Chelonia Mydas ◽

Northeast Brazil ◽

Plastic Pollution ◽

Olive Ridley ◽

Eretmochelys Imbricata ◽

Lepidochelys Olivacea ◽

Green Turtles

ABSTRACT Currently, plastics are recognized as a major pollutant of the marine environment, representing a serious threat to ocean wildlife. Here, we examined the occurrence and effects of plastic ingestion by sea turtles found stranded along the coast of Paraíba State, Brazil from August 2009 to July 2010. Ninety-eight digestive tracts were examined, with plastic found in 20 (20.4%). Sixty five percent (n = 13) of turtles with plastic in the digestive tract were green turtles (Chelonia mydas), 25% (n = 5) were hawksbills (Eretmochelys imbricata), and 10% (n = 2) were olive ridley (Lepidochelys olivacea). More plastic was found in the intestine (85%) than in other parts of the gastrointestinal tract. We observed complete blockage of the gastrointestinal tract due to the presence of plastic in 13 of the 20 turtles that had ingested plastic. No correlation was found between the curved carapace length (CCL) and the number or mass of the plastic ingested items. Significant differences were found between the intake of hard and soft plastic and the ingestion of white/transparent and colored plastic, with soft and white/transparent plastics being more commonly ingested. This study reveals the serious problem of plastic pollution to sea turtles at the area.

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Shark scavenging and predation on sea turtles in northeastern Brazil

Amphibia-Reptilia ◽

10.1163/15685381-00002852 ◽

2012 ◽

Vol 33 (3-4) ◽

pp. 495-502 ◽

Cited By ~ 3

Author(s):

Hugo Bornatowski ◽

Michael R. Heithaus ◽

Clenia M.P. Batista ◽

Rita Mascarenhas

Keyword(s):

Sea Turtles ◽

Chelonia Mydas ◽

Ecosystem Dynamics ◽

Northeastern Brazil ◽

Brazilian Coast ◽

Important Food ◽

Eretmochelys Imbricata ◽

Lepidochelys Olivacea ◽

Green Turtles ◽

Galeocerdo Cuvier

Large sharks have the potential to help structure ecosystem dynamics through top-down impacts on their prey, including sea turtles. Studies of interactions between large sharks and sea turtles, however, are practically nonexistent along the Brazilian coast. Between September 2002 and May 2011 we examined 655 sea turtles – including green turtles Chelonia mydas (n = 607), olive ridleys Lepidochelys olivacea (n = 10), hawksbills Eretmochelys imbricata (n = 33), and loggerheads Caretta caretta (n = 5) – that stranded on Paraíba coast, northeastern Brazil. A total of 63 green turtles (10.4%), two olive ridleys (20.0%) and one hawksbill (3.0%) had shark-inflicted bites. Most bites could not be definitively attributed to scavenging or attacks on living turtles, but the presence of healed shark bites and freshly bleeding bites suggests that some attacks occurred pre-mortem. Bite characteristics suggest that tiger sharks Galeocerdo cuvier were responsible for most bites that could be identified to a particular species. Within green turtles, the only species with sufficient sample size, the probability of carcasses having been bitten increased with carapace length but did not vary across seasons and years. However, there was spatial variation in the probability of a carcass having been bitten by sharks. Our estimates of the minimum proportion of turtles attacked while alive (∼4%) and bitten overall are similar to other areas where shark-turtle interactions have been studied. Turtles likely are an important food for tiger sharks in northeastern Brazil, but further studies are needed to determine the relative frequencies of scavenging and predation.

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Sea turtles of Madagascar – their status, exploitation and conservation

Oryx ◽

10.1017/s0030605300028295 ◽

1994 ◽

Vol 28 (1) ◽

pp. 51-61 ◽

Cited By ~ 13

Author(s):

Berthin Rakotonirina ◽

Andrew Cooke

Keyword(s):

Coastal Waters ◽

Sea Turtles ◽

Loggerhead Turtle ◽

Chelonia Mydas ◽

Dermochelys Coriacea ◽

Olive Ridley ◽

Eretmochelys Imbricata ◽

Lepidochelys Olivacea ◽

Average Size ◽

Hawksbill Turtles

Five species of sea turtles are known from Madagascar's coastal waters. Fishermen on the western and south-western coasts take green turtle Chelonia mydas, loggerhead turtle Caretta caretta and olive ridley Lepidochelys olivacea for their meat. The hawksbill turtle Eretmochelys imbricata is taken mainly for its shell and for making stuffed specimens while the leatherback Dermochelys coriacea is seldom caught. Anecdotal evidence of fishermen and dealers in turtle products, measurement of captured animals and personal observations of the authors all point to declines in numbers and average size for green and hawksbill turtles, coupled with marked declines in nesting rates for these and the olive ridley.

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