Relevant bibliographies by topics / Leatherback turtle

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Leatherback turtle'

Author: Grafiati
Published: 4 June 2021
Last updated: 24 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Leatherback turtle.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Leatherback turtle"

1

Belmahi, Alae Eddine, Youcef Belmahi, Mouloud Benabdi, Amaria Latefa Bouziani, Samira Ait Darna, Yahia Bouslah, Mohamed Bendoula, and Mohamed Bouderbala. "First study of sea turtle strandings in Algeria (western Mediterranean) and associated threats: 2016–2017." Herpetozoa 33 (May 28, 2020): 113–20. http://dx.doi.org/10.3897/herpetozoa.33.e48541.

Full text
Abstract:
Between December 2015 and December 2017 a total of 63 sea turtles were recorded as being stranded along the Algerian coast. The loggerhead sea turtle Caretta caretta was the most commonly stranded species (n = 44) (69.8%), followed by the leatherback Dermochelys coriacea (n = 18) (28.6%) and the green turtle Chelonia mydas (n = 1). There was a slight dominance of the adult size class for stranded loggerhead turtles, while, for the leatherback, late juveniles and adults prevailed. Most loggerhead turtles stranded during the summer months (July and August), whereas most leatherbacks stranded during winter. The breakdown of the strandings by region shows a slight dominance along the western and central shores for C. caretta and a clear dominance in the west for D. coriacea. The primary cause of death was determined in 50.8% of the stranded turtles. Regarding the evidence of interactions with humans the major cause of stranding in loggerhead turtles was incidental catch by artisanal fisheries, followed by boats’ collisions. The main causes of leatherback strandings were boats’ collisions. Algerian data show that human activities affect loggerhead turtles and also prove a significant presence of the leatherback turtle on this coast.
APA, Harvard, Vancouver, ISO, and other styles
2

Báez, José C., David Macías, Salvador García-Barcelona, and Raimundo Real. "Interannual Differences for Sea Turtles Bycatch in Spanish Longliners from Western Mediterranean Sea." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/861396.

Full text
Abstract:
Recent studies showed that regional abundance of loggerhead and leatherback turtles could oscillate interannually according to oceanographic and climatic conditions. The Western Mediterranean is an important fishing area for the Spanish drifting longline fleet, which mainly targets swordfish, bluefin tuna, and albacore. Due to the spatial overlapping in fishing activity and turtle distribution, there is an increasing sea turtle conservation concern. The main goal of this study is to analyse the interannual bycatch of loggerhead and leatherback turtles by the Spanish Mediterranean longline fishery and to test the relationship between the total turtle by-catch of this fishery and the North Atlantic Oscillation (NAO). During the 14 years covered in this study, the number of sea turtle bycatches was 3,940 loggerhead turtles and 8 leatherback turtles, 0.499 loggerhead turtles/1000 hooks and 0.001014 leatherback turtles/1000 hooks. In the case of the loggerhead turtle the positive phase of the NAO favours an increase of loggerhead turtles in the Western Mediterranean Sea. However, in the case of leatherback turtle the negative phase of the NAO favours the presence of leatherback turtle. This contraposition could be related to the different ecophysiological response of both species during their migration cycle.
APA, Harvard, Vancouver, ISO, and other styles
3

Mosnier, A., J. F. Gosselin, J. Lawson, S. Plourde, and V. Lesage. "Predicting seasonal occurrence of leatherback turtles (Dermochelys coriacea) in eastern Canadian waters from turtle and ocean sunfish (Mola mola) sighting data and habitat characteristics." Canadian Journal of Zoology 97, no. 5 (May 2019): 464–78. http://dx.doi.org/10.1139/cjz-2018-0167.

Full text
Abstract:
Part of the western Atlantic population of leatherback turtles (Dermochelys coriacea (Vandelli, 1761)) forage in Canadian waters, where high-use areas have been identified using satellite telemetry and opportunistic sightings. Here, we use sightings of leatherback turtles and ocean sunfish (Mola mola (Linnaeus, 1758)) obtained during a systematic large-scale aerial survey, along with opportunistic turtle sightings, to examine the seasonal occurrence and distribution of leatherback turtles in eastern Canada. Using environmental correlates, we predict the spatial and seasonal development of potentially suitable habitats. All data sets confirmed the presence of leatherback turtles off Nova Scotia during summer. They also highlighted turtle occurrence off southern Newfoundland. Opportunistic sightings suggest a seasonal shift in main turtle concentrations from southwest to northeast, with use of southern Newfoundland waters extending into September. A generalized additive model linking environmental characteristics and turtle observations suggests adding the Grand Banks off Newfoundland and waters east of Anticosti Island in the Gulf of St. Lawrence to the potentially important habitat for leatherback turtles. Direct observations helped delineate habitat currently used by leatherback turtles. In the context of climate change, this modelling approach may improve our ability to forecast changes in turtle habitat suitability and the risks of entrapment or collision associated with potentially changing usage patterns.
APA, Harvard, Vancouver, ISO, and other styles
4

Robinson, Nathan J., Eric A. Lazo-Wasem, Frank V. Paladino, John D. Zardus, and Theodora Pinou. "Assortative epibiosis of leatherback, olive ridley and green sea turtles in the Eastern Tropical Pacific." Journal of the Marine Biological Association of the United Kingdom 97, no. 6 (May 19, 2016): 1233–40. http://dx.doi.org/10.1017/s0025315416000734.

Full text
Abstract:
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.
APA, Harvard, Vancouver, ISO, and other styles
5

McAlpine, Donald F., Stan A. Orchard, Kelly A. Sendall, and Rod Palm. "Status of Marine Turtles in British Columbia Waters: A Reassessment." Canadian Field-Naturalist 118, no. 1 (January 1, 2004): 72. http://dx.doi.org/10.22621/cfn.v118i1.885.

Full text
Abstract:
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.
APA, Harvard, Vancouver, ISO, and other styles
6

Godfrey, Matthew H., N. Mrosovsky, and R. Barreto. "Estimating past and present sex ratios of sea turtles in Suriname." Canadian Journal of Zoology 74, no. 2 (February 1, 1996): 267–77. http://dx.doi.org/10.1139/z96-033.

Full text
Abstract:
Leatherback (Dermochelys coriacea) and green (Chelonia mydas) sea turtles in Suriname lay eggs over several months of the year. During this nesting season, changes in rainfall produce changes in sand temperature, which in turn influence the sexual differentiation of incubating sea turtle embryos. The overall sex ratio of leatherback and green sea turtle hatchlings produced at Matapica beach in Suriname was investigated. Estimates of the sex ratios of these turtles in 1993 (green turtles 63.8% female, leatherbacks 69.4% female) were roughly 10% more female-biased than those from an earlier study in 1982. For both species, a significant negative relationship was found between monthly rainfall and monthly sex ratios. Using this relationship and data on rainfall in the past, it was possible to estimate overall sex ratios for an additional 12 years. These estimates varied considerably among different years, ranging from 20 to 90% female in the case of green turtles. Nevertheless, males tended to be produced primarily in April and May, while some females were produced in all months. Such seasonal patterns of production of turtles of different sexes have implications for sea turtle conservation programs that involve manipulating or harvesting eggs.
APA, Harvard, Vancouver, ISO, and other styles
7

Murphy, Colm. "Effects of deep diving on the trachea of the leatherback turtle." Boolean: Snapshots of Doctoral Research at University College Cork, no. 2010 (January 1, 2010): 119–24. http://dx.doi.org/10.33178/boolean.2010.27.

Full text
Abstract:
This work is concerned with the effects of deep sea diving on the trachea (airway passage) of the leatherback turtle. Leatherback turtles are capable of diving to depths greater than 1,200 meters. Humans, in comparison, may only reach depths of around 30 meters unaided. It is believed that the response of the trachea along with its material properties plays a leading role in determining the depth that can be attained during a dive. The long term objective of this research is to investigate the response of the trachea of the leatherback turtle during deep dives (300-1250m). Questions remain as to the material properties from which the trachea is composed of and how exactly does the trachea respond as it undergoes a deep dive. Answering these questions will help not only to build a complete understanding of the leatherback’s ability to dive to depths greater than 1,000m, but will also inform ...
APA, Harvard, Vancouver, ISO, and other styles
8

James, Michael C., and N. Mrosovsky. "Body temperatures of leatherback turtles (Dermochelys coriacea) in temperate waters off Nova Scotia, Canada." Canadian Journal of Zoology 82, no. 8 (August 1, 2004): 1302–6. http://dx.doi.org/10.1139/z04-110.

Full text
Abstract:
The leatherback sea turtle, Dermochelys coriacea (Vandelli, 1761), has the most extensive range of any reptile, migrating from tropical and subtropical nesting areas to distant foraging habitats, including those in temperate and even boreal waters. This implies flexible thermal functioning. It has been inferred that leatherbacks support active foraging by keeping warm in cold water, rather than becoming lethargic as other marine turtles do. However, data consistent with this view have come from captive turtles in unnatural and stressful conditions. In the present case, foraging leatherbacks were captured at sea off Nova Scotia and their body temperature recorded within 10 min, before such large animals could change their body temperatures appreciably. Mean excess temperature over that of the sea surface (15.0–16.7 °C) averaged 8.2 °C. These results attest to, but underestimate, the capacity of free-swimming leatherbacks to keep warm in northern waters, as data from another turtle that was instrumented to record ocean temperature while diving revealed that leatherbacks foraging in this area at the same time of year may spend 40% of their time diving to waters cooler than the surface.
APA, Harvard, Vancouver, ISO, and other styles
9

Wongfu, Chutima, Wareerat Prasitwiset, Anocha Poommouang, Kittisak Buddhachat, Janine L. Brown, Siriwadee Chomdej, Jatupol Kampuansai, Patcharaporn Kaewmong, Kongkiat Kittiwattanawong, and Korakot Nganvongpanit. "Genetic Diversity in Leatherback Turtles (Dermochelys coriacea) along the Andaman Sea of Thailand." Diversity 14, no. 9 (September 15, 2022): 764. http://dx.doi.org/10.3390/d14090764.

Full text
Abstract:
The leatherback sea turtle (Dermochelys coriacea) is the largest and one of the most migratory turtle species, inhabiting oceans throughout the world. There has been a steady decline in leatherback populations over the past several decades due to human activities. They are considered endangered in Thailand and global, so conservation strategies are needed to study and protect the species, including determining their genetic diversity. A total of 8 microsatellite loci and 658 bp amplicon of mitochondrial DNA (mtDNA) were used to assess genetic data from 149 dead leatherback turtle hatchlings among 14 nests in five locations along the Andaman Sea, Thailand, between 2018–2020. The microsatellite findings show that the observed heterozygosity (Ho) ranged from 0.44 ± 0.09 to 0.65 ± 0.10. Population structures were further divided into two genetically distinct groups by Bayesian inference. For the mtDNA control region, our samples consisted of three haplotypes. Globally, there are 27 haplotypes of leatherback turtles, with a relatively low genetic diversity (h = 0.43). These results reveal the genetic status of leatherback turtles in Thailand and globally, and raise concerns about their relative genetic health, which highlight the need for proactive, long-term management and conservation strategies for this endangered species.
APA, Harvard, Vancouver, ISO, and other styles
10

Weir, Caroline R., Tamar Ron, Miguel Morais, and Agostinho Domingos C. Duarte. "Nesting and at-sea distribution of marine turtles in Angola, West Africa, 2000–2006: occurrence, threats and conservation implications." Oryx 41, no. 2 (April 2007): 224–31. http://dx.doi.org/10.1017/s003060530700186x.

Full text
Abstract:
AbstractThe status of marine turtles in Angola, West Africa, is poorly known, and therefore during 2000–2006 a combination of both dedicated and opportunistic beach and at-sea turtle surveys were carried out, and interviews conducted with fishing communities and at markets. Green Chelonia mydas, olive ridley Lepidochelys olivacea, leatherback Dermochelys coriacea and loggerhead turtles Caretta caretta were recorded, and nesting of the first three species confirmed during September–March (peaking November–December). Green turtles nested mainly in the south, leatherback turtles in north and central Angola, and olive ridley turtle nesting was widespread. Olive ridley turtle nest density at Palmeirinhas averaged 32 nests km−1. At-sea surveys produced 298 turtle records, with peak occurrence during August. Significant anthropogenic-related mortality (including exploitation of meat and eggs and fishing bycatch) was recorded, in addition to natural predation and other threats. Maintenance of the long-term sustainability of these turtle populations should focus on the involvement of fishing communities and increasing awareness throughout Angola.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Leatherback turtle"

1

Tomillo, Maria del Pilar Santidrián Spotila James R. "Factors affecting population dynamics of eastern pacific leatherback turtles (Dermochelys coriacea) /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/2523.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Jones, Timothy Todd. "Energetics of the leatherback turtle, Dermochelys coriacea." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/7454.

Full text
Abstract:
I have quantified the energy requirements of leatherback turtles (Dermochelys coriacea) throughout development, and examined growth rates, resource requirement and availability, and anthropogenic threats from the commercial fishery. I demonstrated that the use of the doubly labeled water (DLW) method to determine field metabolic rate in marine turtles is constrained by low metabolic (MR) and high water turnover rates (Chapter 2). For fed and fasted turtles, water turnover rates were 9.57±1.33% and 6.14±0.65% TBW day−¹1 and MR (from respirometry) was 28.66±5.31 kJ kg−¹ day−¹ and 13.77±1.49 kJ kg−¹ day−¹, respectively. This led to isotope turnover (kd:ko) ratios of 0.91±0.02 for fed turtles and 1.08±0.16 for fasted turtles, producing negative MRs for fasted turtles. While I showed that for fed turtles the DLW method was consistent with respirometry the use of DLW in fasting turtles differed from respirometry by 440%. The fact that DLW does not work in certain situations is a rare finding that will be of broad interest in the field of energetics. Having determined that the DLW method is constrained in marine turtles I then turned to rearing leatherbacks in the laboratory to measure growth (Chapter 3) and determine energy intake (Chapter 4). For the first time I was able to rear several leatherbacks from hatching to juveniles. Leatherbacks maintained an average growth rate of 31.9 ± 2.8 cm year−¹ in straight carapace length (SCL) throughout the study period. The captive leatherbacks matched the length-mass relationship of wild juveniles and adults. A von Bertalanffy growth function (VBGF) predicted age-at-maturity for leatherbacks of 15.3 years. Bycatch data, supplemented with growth curve data, indicate that leatherbacks will reach the minimum length at which they are found interacting with fisheries (drift gill net and longline) in less than 3 years, suggesting they are exposed to threats from marine fisheries for > 80 % of their life before maturity is attained. I estimated that the majority of the Pacific Ocean population of leatherbacks is made up of 2-6 year old juveniles (137,368 turtles) consuming 1.6 x 10⁶ tonnes of jellyfish year−¹. These turtles are restricted to warmer equatorial waters where primary productivity and, possibly, jellyfish abundance are low.
APA, Harvard, Vancouver, ISO, and other styles
3

Therrien, Corie L. "Conservational implications of temperature-dependent sex determination." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008r/therrien.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bostrom, Brian Lee. "Thermoregulation in the leatherback sea turtle (Dermochelys coriacea)." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12666.

Full text
Abstract:
Adult leatherback turtles (Dermochelys coriacea) exhibit thermal gradients between their bodies and the environment of ≥ 8 °C in sub-polar waters and ≤ 4 °C in the tropics. There has been no direct evidence for thermoregulation in leatherbacks although modelling and morphological studies have given an indication of how thermoregulation may be achieved. Using a cylindrical model of a leatherback I investigated the extent to which heat production by muscle activity during variation of swim speed could be used in a leatherback’s thermal strategy. Drag force of a full scale cast of a leatherback was measured in a low velocity wind tunnel to obtain an estimate of the metabolic cost needed to offset drag. It is apparent, from this modelling, that heat flux from the body and flippers, activity and body and water temperatures are important variables to measure in order to fully classify the thermoregulatory response of live leatherbacks. Using captive juvenile leatherbacks of 16 and 37 kg I show for the first time that leatherbacks are indeed capable of thermoregulation. In cold water (< 25 °C), flipper stroke frequency increased, heat loss through the plastron, carapace and flippers was minimized, and a positive thermal gradient of up to 2.3 °C was maintained between body and environment. In warm water (25 – 31 °C), turtles were inactive and heat loss through their plastron, carapace and flippers increased, minimizing the thermal gradient (0.5 °C). In juvenile leatherbacks, heat gain is controlled behaviourally through activity while heat flux is regulated physiologically, presumably by regulation of blood flow distribution. Using a scaling model, I show that a 300 kg adult leatherback is able to maintain a maximum thermal gradient of 18.2 °C in cold sub-polar waters. Thus, by employing both physiological and behavioural mechanisms, adult leatherbacks are able to keep warm while foraging in cold sub-polar waters and to prevent overheating in a tropical environment, greatly expanding their range relative to other marine turtles.
APA, Harvard, Vancouver, ISO, and other styles
5

Myers, A. E. "The internesting diving behaviour of the leatherback turtle." Thesis, Swansea University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638287.

Full text
Abstract:
During spring and summer 2003 data were collected from the leatherback population nesting on a beach in Grenada, West Indies. By attaching data logging devices to leatherbacks I was able to record certain aspects of their behaviour whilst at sea between nesting events. Three different device types were used in these studies: Satellite Relayed Data Loggers (SRDLs), Time depth recorders (TDRs) and mouth opening sensors. The SRDLs as well as providing location fixes, transmit limited dive data to overpassing satellites. After introducing various aspects of leatherback biology and ecology (chapter 1) and describing the methodologies used to collect and process the data (chapter 2) I then go on to validate this data collected by the SRDLs (chapter 3). This was achieved by attaching, to the same animal, an SRDL and a TDR (which record depth and temperature at a predetermined sampling interval). The fourth chapter focuses specifically on the data acquired by the TDRs particularly in relation to diel periodicity and the function of deep dives. Chapter five pertains to the crepuscular diving behaviour of leatherbacks. In this chapter I predict how the turtles will behave according to optimal foraging theory and then investigate these predictions using the data collected by the TDRs. Chapters six and seven involves a thorough investigation into the mouth opening data collected. In chapter six I examine the breathing patterns and mouth opening behaviour of the turtle during dives whilst in chapter seven I focus on some unexpected oscillations being recorded by the mouth opening sensor.
APA, Harvard, Vancouver, ISO, and other styles
6

de, Wet Anje. "Factors affecting survivorship of loggerhead (Caretta caretta) and leatherback (Dermochelys coriacea) sea turtles of South Africa." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1007900.

Full text
Abstract:
Loggerhead (Caretta caretta) and leatherback (Dermochelys coriacea) sea turtles as well as their eggs and hatchlings have been protected on their nesting beach in South Africa (SA) since 1963. Both nesting populations were expected to show similar trends in recovery following the application of identical protection and conservation measures. The loggerhead nesting population has responded favourably to these protection efforts. In contrast, the leatherback nesting population showed an initial increase but is currently stable. The reason for this difference in response is thought to be due to differential offshore mortality of these two species. This prompted an investigation into the different sources of sea turtle mortality in the South Western Indian Ocean (SWIO). Specific aims were to identify and quantify sources of loggerhead and leatherback mortality on nesting beaches as well as in the oceans. Reasonable survivorship at all age classes is important to ensure recruitment of new nesting individuals into sea turtle populations. Mortality of nests, eggs per nest and hatchlings were quantified over two seasons for the loggerheads and leatherbacks nesting in SA. The beach was patrolled on foot to encounter and record females emerging from the ocean and later, hatchlings from their nests. The nests were then monitored during the incubation period and excavated once hatched. The fates of 925 nests were determined during these two nesting seasons (2009/2010 and 2010/2011). The main source of loggerhead and leatherback nest destruction was predation (8.6 percent and 15.7 percent respectively) followed by nest erosion (2.2 percent and 6.3 percent respectively). Overall nest success was high but higher for loggerheads (89 percent) than for leatherbacks (78 percent). The main cause of egg mortality for both species was early developmental arrest, followed by predation by ants and ghost crabs. Hatchlings en route to the sea were almost exclusively predated by ghost crabs (4.2 percent of emerged loggerhead hatchlings and 3.2 percent of emerged leatherback hatchlings). It appears that both species benefit from the coastal conservation efforts. When sea turtles leave the nesting beach, either as hatchlings or adults, conservation and monitoring becomes more difficult and sea turtles are exposed to a multitude of threats, including anthropogenic threats. Age classes tend to be spatially separated due to different habitat and dietary requirements. The type of threat sea turtles are exposed to thus depends on the current age class. Offshore sources of mortality in the SWIO were identified and where possible loggerhead and leatherback mortality was quantified and mapped spatially. Loggerheads were mostly exposed to and had the highest mortality in the artisanal fisheries in the SWIO (> 1000 per annum), inshore trawling (ca. 41 per annum), shark nets (protective gill nets) (21.6 ± 6.7 per annum) and the pelagic longline fishery (5.0 ± 4.4 per annum). In contrast, leatherbacks with a pelagic lifestyle, were mostly exposed to pelagic longline fisheries (7.8 ± 7.8 per annum). A spatial analysis of fishing activities indicated that leatherback home ranges overlapped 41percent with pelagic longline fishing activity in the SA EEZ, whereas the overlap between pelagic longliners and loggerhead home ranges was 29 percent. The quantified sources of mortality provide some explanation for the trend in the loggerhead nesting population but not the trend in the leatherback nesting population. Hatchling survivorship to adulthood was estimated to determine the viability of the two nesting populations as well as to determine whether offshore mortality was responsible for the difference in recovery of the two populations. Loggerhead hatchling survivorship to adulthood was estimated at between 2 and 10 per 1000 hatchlings, the minimum requirement for an increasing population. The adopted sophisticated model shows that leatherbacks have a survival rate of 5 to 10 per 1 000 hatchlings. However, this suggests that the population is increasing, but the leatherback population is stable. Perhaps the age to maturity of SA leatherbacks is greater than 12 years, or fisheries-related mortality affects younger age classes than initially thought. It is therefore recommended that the turtle monitoring area is extended to include other potential nesting grounds. In addition, observer or monitoring programs for commercial as well as artisanal fisheries needs to be extended throughout the SWIO to quantify sea turtle mortality. Ultimately a comprehensive multi-regional approach is required for the conservation of these highly migratory species.
APA, Harvard, Vancouver, ISO, and other styles
7

Saba, Vincent Sellitto. "Bottom-up and climatic forcing on the nesting and foraging ecology of leatherback turtles (Dermochelys coriacea)." W&M ScholarWorks, 2007. http://www.vims.edu/library/Theses/Saba07.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Botha, Marié. "Nest site fidelity and nest site selection of loggerhead, Caretta Caretta, and leatherback, dermochelys coriacea, turtles in KwaZulu-Natal, South Africa." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1233.

Full text
Abstract:
Loggerhead and leatherback sea turtles nest on the beaches of the north-eastern portion of Kwazulu-Natal within the iSimangaliso Wetland Park. Loggerheads place ~60 percent of all nests within an 8 km stretch of beach, whereas leatherbacks tend to space their nests more evenly along the entire length of the monitoring area. The study aimed to determine nest site fidelity of loggerheads and leatherbacks (using four decades of nesting data housed by Ezemvelo KZN Wildlife) and the factors that influence nest site selection of both species within the 56 km of turtle monitoring area (32N to 100S) and the 5 km area of high-density loggerhead nesting (0N to 12N). The effectiveness of nest site selection was then determined through the hatching success of loggerheads over the 5km area (0N to 12N). Results showed that loggerheads show a high degree of nest site fidelity (~3 km) with nest site fidelity of individuals increasing over subsequent seasons of nesting, as well as these individuals using the same stretches of beach for nesting (the most popular area being 1N to 4N for repeat nesters). Leatherbacks displayed nest site fidelity of ~9 km and this did not increase over successive seasons of nesting. In terms of nest site selection, loggerheads and leatherbacks both avoided areas where low shore rock was present, whereas both species preferred nesting on beaches of intermediate morphodynamic state. Leatherback nesting was significantly higher in areas with wider surf zones. Both species were able to surpass the high water mark when nesting as nests below this point would be almost certainly doomed. Hatching success of loggerheads was comparative to high (83 %) relative to other studies, however, nest success varied across the beach from beacon 1N to 12N. Areas where highest nest success was observed were not areas of highest nest density presumably due to artificial lighting. Results from this study increase our understanding of the evolutionary biology of loggerhead and leatherback turtles in South Africa and the effectiveness of loggerhead nest site selection through hatching success.
APA, Harvard, Vancouver, ISO, and other styles
9

Weston, Emily G. "Predicting leatherback sea turtle sex ratios using spatial interpolation of nesting beach temperatures." Thesis, Florida Atlantic University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527434.

Full text
Abstract:

Sex determination in leatherback sea turtles is directed primarily by the temperatures a clutch experiences during the middle third of development. Warmer temperatures tend to produce females will cooler temperatures yield males. Nest temperatures can vary spatially and temporally. During the 2010 and 2011 nesting seasons, this study estimated the hatchling sex ratio of leatherback sea turtles on Sandy Point National Wildlife Refuge (SPNWR), St. Croix, U.S. Virgin Islands. I measured sand temperatures from May- August and across the spatial range of leatherback nesting habitat. I spatially interpolated those temperatures to create maps that predicted temperatures for all nests incubating on SPWNR. Nest temperatures were also directly measured and compared with predicted nest temperatures to validate the prediction model. Sexes of dead-in-nest hatchlings and full term embryos were used to confirm the sex-temperature response. The model showed that microclimatic variation likely impacts the production of both sexes on SPNWR.

APA, Harvard, Vancouver, ISO, and other styles
10

James, Michael Charles. "Distribution of the leatherback turtle, Dermochelys coriacea, in Atlantic Canada, evidence from an observer program, aerial surveys, and a volunteer network of fish harvesters." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0028/MQ51997.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Leatherback turtle"

1

Leatherback turtles. Mankato, Minn: Capstone Press, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Muir, Paddy. Leatherback seaturtle. Ottawa, Ont: Canadian Wildlife Service, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Watt, Melanie. Leatherback turtles. New York: AV2 by Weigl, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Santidrián Tomillo, Pilar, 1974- editor, ed. The leatherback turtle: Biology and conservation. Baltimore: Johns Hopkins University Press, 2015.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Rake, Jody Sullivan. Leatherback sea turtles. North Mankato, Minn: Snap Books, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Voyage of the turtle: In pursuit of the Earth's last dinosaur. New York: Holt, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Safina, Carl. Voyage of the turtle: In pursuit of the Earth's last dinosaur. New York: Holt, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

McAlpine, Donald F. Leatherback turtle in New Brunswick. Saint John: New Brunswick Museum, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Threat to the leatherback turtle. Hockessin, Del: Mitchell Lane Publishers, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hirth, Harold F. Some aspects of the ecology of the leatherback turtle Dermochelys coriacea at Laguna Jalova, Costa Rica. [Seattle, Wash.]: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Leatherback turtle"

1

Tarvey, Lance. "First nesting records for the Leatherback Turtle Dermochelys coriacea in northern New South Wales Australia, and field management of nest sites." In Herpetology in Australia, 233–38. P.O. Box 20, Mosman NSW 2088, Australia: Royal Zoological Society of New South Wales, 1993. http://dx.doi.org/10.7882/rzsnsw.1993.036.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Angel Reyes-López, Miguel, Fátima Yedith Camacho-Sánchez, Catherine E. Hart, Valeria Leal-Sepúlveda, Kevin Alan Zavala-Félix, César Paúl Ley-Quiñónez, A. Alonso Aguirre, and Alan Alfredo Zavala-Norzagaray. "Rediscovering Kemp’s Ridley Sea Turtle (Lepidochelys kempii): Molecular Analysis and Threats." In Natural History and Ecology of Mexico and Central America. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96655.

Full text
Abstract:
Sea turtles are reptiles that have inhabited the earth for 100 million years. These are divided into 2 families (Cheloniidae and Dermochelyidae) and 7 species of sea turtles in the world: the leatherback turtle (Dermochelys coriacea); hawksbill turtle (Eretmochelys imbricata); Kemp’s ridley (Lepidochelys kempii); olive ridley (L. olivacea); Loggerhead turtle (Caretta caretta); flatback sea turtle (Natator depressus) and green turtle (Chelonia mydas). In particular, Kemp’s ridley is included in the red list of IUCN categorized as “critically endangered”. The most important site around the Word is in Rancho Nuevo, Tamaulipas, Mexico. Where 80–95% of the world’s nesting is concentrated. Other nesting areas are Tepeguajes and Barra del Tordo, in Tamaulipas, and with less intensity in Veracruz (Lechuguillas and El Raudal beaches) and South Padre Island, Texas, USA. They deposit an average of about 90 eggs and hatching takes 40 to 60 days. Therefore, they are vulnerable to different anthropogenic activities and sources of pollution, such as heavy metals, which can cause toxic effects that are harmful to the turtles, damage their physiology and health. To understand the real situation about health and genetic parameters it is necessary to analyze biochemical and molecular factors in this species.
APA, Harvard, Vancouver, ISO, and other styles
3

Coomansingh, Johnny. "Saving the leatherback turtle in Grande Riviere, Trinidad." In The Routledge Handbook of Community-Based Tourism Management, 341–50. Routledge, 2020. http://dx.doi.org/10.4324/9780429274664-32.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

"Chapter 11. Direct Incentive Approaches for Leatherback Turtle Conservation." In Conservation of Pacific Sea Turtles, 164–82. University of Hawaii Press, 2017. http://dx.doi.org/10.1515/9780824860196-013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

"Chapter 8. Importance of Networks for Conservation of the Pacific Leatherback Turtle." In Conservation of Pacific Sea Turtles, 120–31. University of Hawaii Press, 2017. http://dx.doi.org/10.1515/9780824860196-010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

WALLACE, BRYAN P., and ROTNEY PIEDRA CHACÓN. "Leatherbacks in the Balance:." In Sea Turtles of the Eastern Pacific, 193–223. University of Arizona Press, 2021. http://dx.doi.org/10.2307/j.ctv21hrddc.12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"5. Energetics of Leatherback Sea Turtles." In Experimental Approaches to Conservation Biology, 66–82. University of California Press, 2019. http://dx.doi.org/10.1525/9780520930636-007.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ehrenfeld, David. "Saving by Selling." In Swimming Lessons. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195148527.003.0023.

Full text
Abstract:
Since the fall of Soviet communism, capitalism—perhaps we should say big business—has been prescribed more than ever as the cure for any ill, including the decline of nature. A large part of the natural world has been damaged or destroyed by unregulated commerce. Now, various groups of conservationists are trying to save some of the most spectacular remnants of nature, both species and ecosystems—with more commerce. The idea of turning the tables and using the methods of exploiters to prevent more serious exploitation is an interesting one, but the risks are high and not everyone in the business of saving by selling seems to have given much thought to them. I first came across commercial conservation in one of its earliest and most dubious forms, the farming of sea turtles, a phoenix like enterprise that, despite its chronic inability to turn a profit, always springs up renewed from the ashes of its last bankruptcy. Because of its biological and economic complexity, the farming of sea turtles nicely illustrates many of the problems inherent in the commercialization of consevation and is worth examining in some detail. There are seven species of sea turtles in the world’s oceans, ranging in size from the approximately 100-pound Atlantic and Pacific ridleys and the hawksbills, to the huge leatherbacks, which can weigh as much as1200 pounds and possibly more. All except the loggerhead nest primarily on tropical or subtropical beaches, although some venture far into cold waters in between nestings. The eggs of every species are prized as food and in Latin America are considered an aphrodisiac. The leather is used for expensive shoes; the hawksbill provides shell for jewelry; and the hawksbill, loggerhead, and especially the green are taken for their meat, cartilage (for soup) and oil (for cosmetics). Indeed, the green turtle has been described as the world’s most valuable reptile. Not surprisingly, nearly all sea turtle populations have been seriously depleted, and the great majority of the nesting populations that existed 150 years ago are now extinct.
APA, Harvard, Vancouver, ISO, and other styles
9

"Chapter 6. Tragedy of the Malaysian Leatherback Population." In Conservation of Pacific Sea Turtles, 97–107. University of Hawaii Press, 2017. http://dx.doi.org/10.1515/9780824860196-008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

"Chapter 9. Reconciling Dual Goals of Leatherback Conservation and Indigenous People’s Welfare." In Conservation of Pacific Sea Turtles, 132–47. University of Hawaii Press, 2017. http://dx.doi.org/10.1515/9780824860196-011.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Leatherback turtle"

1

Mohan, Midhun, Willie Doaemo, Ricardo F. Tapilatu, Wan Shafrina Wan Mohd Jaafar, Esmaeel Adrah, Gopika Gopan, Eben North Broadbent, et al. "Leatherback turtle conservation and monitoring efforts at the crossroads: A remote sensing perspective." In 2021 7th International Conference on Space Science and Communication (IconSpace). IEEE, 2021. http://dx.doi.org/10.1109/iconspace53224.2021.9768727.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Leatherback turtle' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography