- Parasites of Marine Turtles

2013 ◽  
pp. 446-465
Keyword(s):  
Marine Turtles

Stranded Marine Turtles in Northeastern Brazil: Incidence and Spatial–Temporal Distribution of Fibropapillomatosis

2019 ◽  
Vol 18 (2) ◽  
pp. 249 ◽  
Author(s):  
Edson Soares da Silva-Júnior ◽  
Daniel Solon Dias de Farias ◽  
Aline da Costa Bomfim ◽  
Augusto Carlos da Boaviagem Freire ◽  
Rafael Ângelo Revorêdo ◽  
...  
Keyword(s):  
Temporal Distribution ◽  
Northeastern Brazil ◽  
Marine Turtles

scholarly journals Plastic ingestion by freshwater turtles: a review and call to action

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Adam G. Clause ◽  
Aaron J. Celestian ◽  
Gregory B. Pauly
Keyword(s):  
Marine Species ◽  
Marine Turtle ◽  
Freshwater Turtle ◽  
Freshwater Turtles ◽  
Plastic Pollution ◽  
Potential Threat ◽  
Implementation Quality ◽  
Turtle Species ◽  
Marine Turtles ◽  
Conservation Concern

AbstractPlastic pollution, and especially plastic ingestion by animals, is a serious global issue. This problem is well documented in marine systems, but it is relatively understudied in freshwater systems. For turtles, it is unknown how plastic ingestion compares between marine and non-marine species. We review the relevant turtle dietary literature, and find that plastic ingestion is reported for all 7 marine turtle species, but only 5 of 352 non-marine turtle species. In the last 10 years, despite marine turtles representing just 2% of all turtle species, almost 50% of relevant turtle dietary studies involved only marine turtles. These results suggest that the potential threat of plastic ingestion is poorly studied in non-marine turtles. We also examine plastic ingestion frequency in a freshwater turtle population, finding that 7.7% of 65 turtles had ingested plastic. However, plastic-resembling organic material would have inflated our frequency results up to 40% higher were it not for verification using Raman spectroscopy. Additionally, we showcase how non-native turtles can be used as a proxy for understanding the potential for plastic ingestion by co-occurring native turtles of conservation concern. We conclude with recommendations for how scientists studying non-marine turtles can improve the implementation, quality, and discoverability of plastic ingestion research.

Understanding the sources and effects of abandoned, lost, and discarded fishing gear on marine turtles in northern Australia

2014 ◽  
Vol 29 (1) ◽  
pp. 198-206 ◽  
Author(s):  
Chris Wilcox ◽  
Grace Heathcote ◽  
Jennifer Goldberg ◽  
Riki Gunn ◽  
David Peel ◽  
...  
Keyword(s):  
Fishing Gear ◽  
Northern Australia ◽  
Marine Turtles

A Revision of the Subfamily Microscaphidiinae (Platyhelminthes, Digenea, Microscaphidiidae) Parasitic in Marine Turtles (Reptilia, Chelonia)

1986 ◽  
Vol 34 (2) ◽  
pp. 241 ◽  
Author(s):  
D Blair
Keyword(s):  
Green Turtle ◽  
Chelonia Mydas ◽  
Nomen Nudum ◽  
Taxonomic Significance ◽  
Marine Turtles ◽  
As Species ◽  
First Time ◽  
Species Inquirendae

A revision of the subfamily Microscaphidiinae Looss, 1900 is presented and characters of taxonomic significance discussed. The genus Microscaphidium Looss, 1900, contains M. reticulare (van Beneden, 1859) Looss, 1901 (synonyms M. japonicum Oguro, 1941; M. caballeroi Groschaft, 1977); M. aberrans Looss, 1902 (synonym M. reticulare in part); and M, warui, sp. nov. Confusion in the literature over the identities of M. reticulare and M. aberrans is discussed. A neotype is selected for the former species and a lectotype for the latter. Polyangium linguatula (Looss, 1899) Looss, 1902 (synonyms P. miyajimai Kobayashi, 1921; P. colymbi Poche, 1925; P. longiseminale Chattopadhyaya, 1972) is the sole species in Polyangium Looss, 1902. The genus Angiodictyum Looss, 1902 contains A. parallelum (Looss, 1901) Looss, 1902; A. posterovitellatum Chattopadhyaya, 1972; A. longum, sp, nov.; A. glossoides, sp. nov. Polygorgyra, gen. nov., is proposed for P. cholados, sp. nov. Microscaphidium chelonei Chattopadhyaya, 1972 nec Mehrotra, 1973 and Angiodictyum anteroporum Chattopadhyaya, 1972 are regarded as species inquirendae. Microscaphidium chelonei Mehrotra, 1973 nec Chattopadhyaya, 1972 is a nomen nudum. The following species are recorded for the first time from the green turtle, Chelonia mydas (L.) in Australian waters: Microscaphidium reticulare; M. aberrans; M. warui; Angiodictyum posterovitellatum; A. longum; Polygorgyra cholados.

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.

Marine Wildlife Bycatch Under the CMS: Progress and Prospects

2003 ◽  
Vol 18 (2) ◽  
pp. 215-240
Keyword(s):  
Marine Species ◽  
Wild Animals ◽  
Migratory Species ◽  
Considerable Potential ◽  
Marine Turtles ◽  
Incidental Capture ◽  
Wide Range ◽  
Marine Wildlife

AbstractThis article explains the provisions of the Convention for the Conservation of Migratory Species of Wild Animals (CMS) and its subsidiary marine wildlife instruments as they relate to bycatch management. The CMS was primarily developed with the purpose of protecting and conserving migratory species and their habitats. The Convention was initially regarded as little more than a paper accord. Since its inception the CMS has undergone gradual significant changes not only in its scope but also in its geographical coverage. There are ten subsidiary instruments currently in force under the CMS which include regional accords on a wide range of marine species such as cetaceans, marine turtles and pinnipeds. These agreements have considerable potential for regulating the incidental capture of marine wildlife in fisheries. Issues of interest in regard to these agreements include the use of non-binding instruments, and mechanisms for coordination between accords. This article examines the CMS and its subsidiary instruments; it identifies challenges facing the Convention, and provides options for the development of more comprehensive approaches to the management of bycatch.

scholarly journals Status of Marine Turtles in British Columbia Waters: A Reassessment

2004 ◽  
Vol 118 (1) ◽  
pp. 72 ◽  
Author(s):  
Donald F. McAlpine ◽  
Stan A. Orchard ◽  
Kelly A. Sendall ◽  
Rod Palm
Keyword(s):  
British Columbia ◽  
Marine Environment ◽  
Chelonia Mydas ◽  
Marine Turtle ◽  
Dermochelys Coriacea ◽  
Concerted Effort ◽  
Leatherback Turtles ◽  
Marine Turtles ◽  
Green Turtles

Marine turtles in British Columbia have previously been considered off course stragglers. Here we document 20 new reports for Green Turtles, Chelonia mydas, and Leatherback Turtles, Dermochelys coriacea, for the province. Until recently there had been no concerted effort to acquire data on marine turtle abundance or frequency off British Columbia. Observations presented here allow a reassessment of marine turtle status in British Columbia waters. We suggest Green Turtles and Leatherbacks should be considered rare vagrants and uncommon seasonal residents, respectively, off British Columbia and that they are a natural part of the British Columbia marine environment.

scholarly journals Rate of egg maturation in marine turtles exhibits ‘universal temperature dependence’

2011 ◽  
Vol 80 (5) ◽  
pp. 1034-1041 ◽  
Author(s):  
Sam B. Weber ◽  
Jonathan D. Blount ◽  
Brendan J. Godley ◽  
Matthew J. Witt ◽  
Annette C. Broderick
Keyword(s):  
Temperature Dependence ◽  
Marine Turtles ◽  
Egg Maturation

scholarly journals Natal foraging philopatry in eastern Pacific hawksbill turtles

2017 ◽  
Vol 4 (8) ◽  
pp. 170153 ◽  
Author(s):  
Alexander R. Gaos ◽  
Rebecca L. Lewison ◽  
Michael P. Jensen ◽  
Michael J. Liles ◽  
Ana Henriquez ◽  
...  
Keyword(s):  
Genetic Research ◽  
Eastern Pacific ◽  
Marine Turtle ◽  
Natal Philopatry ◽  
Eretmochelys Imbricata ◽  
Turtle Species ◽  
Marine Turtles ◽  
Complex Processes ◽  
Natal Homing ◽  
Hawksbill Turtles

The complex processes involved with animal migration 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.

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