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Fig. 8 in SYNOPSIS OF THE BIOLOGICAL DATA ON THE LOGGERHEAD SEA TURTLE CARETTA CARETTA (LINNAEUS 1758)
Fig. 8. Growth rates for loggerheads during the first year of activity. Figure from Frazer (1982). (%¼) Meanfrom Kaufmann (1967); (V) Mean from Caldwell et al. (1955); (•) Grand mean from Stickney et al. (1973);) (O) Mean from Rebel (1974); (%) Mean from Witham and Futch (1977).
Fig. 5 in SYNOPSIS OF THE BIOLOGICAL DATA ON THE LOGGERHEAD SEA TURTLE CARETTA CARETTA (LINNAEUS 1758)
Fig. 5. Worldwide nesting locations of the loggerhead. Stars represent major nesting locations arid circles indicate minor nesting areas.
Fig. 7 in SYNOPSIS OF THE BIOLOGICAL DATA ON THE LOGGERHEAD SEA TURTLE CARETTA CARETTA (LINNAEUS 1758)
Fig. 7. Histogram showing size frequency distribution of loggerheads stranded along European coasts of the Atlantic Ocean (Brongersma 1972).
Fig. 6 in SYNOPSIS OF THE BIOLOGICAL DATA ON THE LOGGERHEAD SEA TURTLE CARETTA CARETTA (LINNAEUS 1758)
Fig. 6. Nesting locations of the loggerhead in the west-central Atlantic Ocean and Caribbean Sea. Heavy stippling represents major areas of nesting; light stippling represents areas of lesser but still important nesting concentrations; arrows represent areas with sporadic but consistent nesting, or areas where loggerheads have nested only rarely.
Fig. 9 in SYNOPSIS OF THE BIOLOGICAL DATA ON THE LOGGERHEAD SEA TURTLE CARETTA CARETTA (LINNAEUS 1758)
Fig. 9. Growth rates for loggerheads beyond the first year in captivity. Figure from Frazer (1982). (%) Calculated from Uchida(1967); (O) Data for Parker's (1929) fastestgrowing turtle; (•) Mean for three other turtles of Parker's (1929); (V) Mean from Hildebrand and Hatsel (1927); (%¡) Mean from Hughes et al. (1967); (%¼) Grand mean from Schwartz (1981).
Fig. 3. A-C in SYNOPSIS OF THE BIOLOGICAL DATA ON THE LOGGERHEAD SEA TURTLE CARETTA CARETTA (LINNAEUS 1758)
Fig. 3. A-C Dorsal, ventral, and lateral views of skull of adult male loggerhead (100 cm CL) from Sanibel Island, FL (Pritchard and Trebbau 1984).
Fig. 1 in Seasonal residency of loggerhead turtles Caretta caretta tracked from the Gulf of Manfredonia, South Adriatic Abstract
Fig. 1: Positions and paths of four loggerhead turtles (A, B, D, E) which remained in the Gulf of Manfredonia during the monitored period. The grey areas represent KDE 50%. Isobaths are shown (10, 20, 50 m).
Fig. 2 in Seasonal residency of loggerhead turtles Caretta caretta tracked from the Gulf of Manfredonia, South Adriatic Abstract
Fig. 2: Turtle C. (a) entire path.(b) coastal subarea of the periods 4 Jul-11 Nov 2012 and 3 May-27 Jun 2013, where the grey area represents KDE 50% for aggregated data. (c)the same subarea with separate KDE 50% for the period 2012 (grey area) and 2013 (ellipse). AL: Albania; BA: Bosnia and Herzegovina; HR: Croatia; ME: Montenegro. Isobaths 200m (a) and 20 m (b and c) are shown.
Figure 1 in Invertebrate infestation in green turtle (Chelonia mydas (Linnaeus, 1758)) and loggerhead turtle (Caretta caretta (Linnaeus, 1758)) nests on Alata Beach, Mersin, Turkey
Figure 1. The important sea turtle nesting beaches in Turkey and a general view of Alata beach showing the back structure.
Figure 9 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 9. Comparison of frequency distributions between sea surface temperatures (SSTs) and time percent temperatures (TPTs) experienced by satellite-tagged loggerhead turtles <50 cm straight carapace length (SCL) after winter 2011. (A) SSTs collected for locations of eight turtles leaving the Sea of Japan. (B) TPTs collected for locations of eight turtles leaving the Sea of Japan.
Figure 8 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 8. Comparison of frequency distributions between sea surface temperatures (SSTs) and time percent temperatures (TPTs) experienced by satellite-tagged loggerhead turtles <50 cm straight carapace length (SCL) during summer 2011. (A) SSTs collected for locations of eight turtles leaving the Sea of Japan. (B) SSTs collected for locations of seven turtles staying in the Sea of Japan. (C) TPTs collected for locations of eight turtles leaving the Sea of Japan. (D) TPTs collected for locations of three turtles staying in the Sea of Japan.
Figure 7 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 7. Ten-day mean (± SD) sea surface temperatures (SSTs) experienced by satellite-tagged loggerhead turtles <50 cm straight carapace length (SCL). Filled circles: six turtles staying in the Sea of Japan, open circles: three turtles leaving the Sea of Japan.
Figure 5 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 5. Sea surface temperature (SST) in the Sea of Japan and western North Pacific and positions of satellite-tagged loggerhead turtles <50 cm straight carapace length (SCL). Open star: start position, circles: positions. (A) Positions of turtle IDs 22270, 25695, 42712, 50135, 57144 and 65426 leaving the Sea of Japan at summer 2011–2013. (B) Positions of turtle IDs 22270, 25695, 42712, 50135, 57144 and 65426 leaving the Sea of Japan at winter 2011–2013. (C) Positions of turtle IDs 19593 and 53771 that stayed in the Sea of Japan at summer 2011–2013. (D) Positions of turtle ID 19593 that stayed in the Sea of Japan at winter 2011–2013.
Figure 6 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 6. Sea surface temperature (SST) in the Sea of Japan and western North Pacific and positions of satellite-tagged loggerhead turtles>50 cm straight carapace length (SCL). Circles: positions, open star: start position. (A) Positions of turtle IDs 52695 and 53759 that left the Sea of Japan at summer 2011–2013. (B) Positions of turtle IDs 52695 and 53759 that left the Sea of Japan at winter 2011–2013. (C) Positions of turtle IDs 23513, 23542, 53758 and 53770 that stayed in the Sea of Japan at summer 2011–2013. (D) Positions of turtle IDs 23513, 23542 and 53758 that stayed in the Sea of Japan at winter 2011–2013.
Figure 4 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 4. Movement route maps of satellite-tagged loggerhead turtles>50 cm SCL after their release off Kanazawa-shi, Sea of Japan, on July 15, 2011. Circles: final positions. Open star: start position. **: recaptured. (A) Tracks of turtle IDs 52695 and 53759. Inlet: track of turtle ID 53759 leaving the Sea of Japan on September 26, 2011 through the Tsugaru Strait. (B) Tracks of turtle IDs 23513, 23542, 53770 and 53758.
Figure 3 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 3. Movement route maps of satellite-tagged loggerhead turtles <50 cm straight carapace length (SCL) after their release off Kanazawa-shi, Sea of Japan, on July 15, 2011. Circles: final positions. *: likely stranded. **: recaptured. (A) Tracks of turtle IDs 19593, 40470, 50144, 50152 and 57152. (B) Tracks of turtle IDs 8552, 22275, 29060, 65424 and 57151. (C) Tracks of turtle IDs 40605, 53771, 57148, 65435, 71916 and 88060.
Figure 1 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 1. Map of study sites. Location of release and recapture sites of the loggerhead turtles. Dashed lines: northern and southern limits of turtle nesting. Gray lines and arrows: typical year-round tracks of the Kuroshio and Tsushima Warm Currents with directions of current flow. Open star: release site.
Figure 2 in Satellite tracking immature loggerhead turtles in temperate and subarctic ocean habitats around the Sea of Japan
Figure 2. Movement route maps of satellite-tagged loggerhead turtles <50 cm straight carapace length (SCL) after their release off Kanazawa-shi, Sea of Japan, on July 15, 2011. Circles: final positions. Open star: start position. (A) Tracks of turtle IDs 22270, 42712, 50135 and 65426. Inlet: track of turtle ID 22270 leaving the Sea of Japan on August 22, 2011 through the Soya Strait. (B) Tracks of turtle IDs 23537, 25329 and 57144. (C) Track of turtle ID 25695.
Assessment of the nesting population demography of loggerhead turtles (Caretta caretta) in La Roche Percée: first long-term monitoring in New Caledonia.
<p><span>Population monitoring is essential to assess, manage and protect threatened species. Although the South Pacific loggerhead turtle subpopulation is classified as critically endangered by the IUCN, monitoring data are scarce. </span></p> <p><span>This study reports the results of the first long-term monitoring of the nesting population of loggerhead turtles held by Bwärä Tortues Marines on La Roche Percée beach, New Caledonia. </span><span>From 2006 to 2020, Capture Mark Recapture was used to identify nesting individuals. Time and nesting success were recorded on site.</span></p> <p><span>A total of 452 different females were observed and tagged over 14 years. The number of different nesting individuals observed each year showed a significant increase along the timeframe of the study. A remigration interval of 3.34 years was observed and the overall nesting success was 59.02%. This study also reports the inter-nesting intervals, monthly and hourly variabilities in the visits at the nesting site.</span></p> <p><span>The conservation actions led by Bwärä Tortues Marines seem to be correlated with a higher nesting success. This study provides encouraging results and highlights the need to pursue the monitoring and conservation actions implemented by Bwärä Tortues Marines. Further management recommendations are also provided.</span></p>
Assessment of the nesting population demography of loggerhead turtles (Caretta caretta) in La Roche Percée: first long-term monitoring in New Caledonia.
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