Migration, distribution, and diving behavior of adult male loggerhead sea turtles (Caretta caretta) following dispersal from a major breeding aggregation in the Western North Atlantic

Arendt, Michael D.; Segars, Albert L.; Byrd, Julia I.; Boynton, Jessica; Schwenter, Jeffrey A.; Whitaker, J. David; Parker, Lindsey

doi:10.1007/s00227-011-1826-0

Cited by 70 publications

(51 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, obtaining these data can be challenging due to the generally slow somatic growth, delayed maturation, and highly migratory behavior characteristic of sea turtle species, which make it difficult to follow individuals throughout development and maturation (Avens and Snover 2013). In addition, adult sea turtle population data are necessarily biased toward females that can be more readily studied when they come ashore to nest, while data collection for males is more opportunistic and infrequent, as they remain relatively inaccessible in the marine environment throughout their lives (Arendt et al 2012). Furthermore, although point estimates of ASM offer some insight into this demographic parameter and its potential influence on population dynamics, accurate characterization requires information regarding not only mean values, but also variability, temporal trends, and potential sex-specific differences (NRC 2010).…”

Section: Discussionmentioning

confidence: 98%

Age and size at maturation- and adult-stage duration for loggerhead sea turtles in the western North Atlantic

et al. 2015

View full text Add to dashboard Cite

mark associated with maturation were 90.5 for females (range 75.0-101.3) and 95.8 for males (range 80.6-103.8). Ages at maturation estimated from (1) the rapprochement skeletal growth mark; (2) back-calculated SCL-at-age data; and (3) bootstrapping and fitting Fabens modified von Bertalanffy growth curve to back-calculated growth data were very similar between approaches, but demonstrated a wide possible range. Mean age predictions associated with minimum and mean maturation SCLs were 22.5-25 and 36-38 years for females and 26-28 and 37-42 years for males. Post-maturation longevity (i.e., adult-stage duration) was similar for males and females, ranging from 4 to 46 years (mean 19 years).

show abstract

Section: Discussionmentioning

confidence: 98%

Age and size at maturation- and adult-stage duration for loggerhead sea turtles in the western North Atlantic

et al. 2015

View full text Add to dashboard Cite

show abstract

“…More recent satellite telemetry studies have corroborated these connections, demonstrating that some adult female loggerheads from three subpopulations (Northern, Peninsular Florida, Northern GoM) traveled to the Bahamas after nesting on various Florida beaches [37 (2 turtles), 23 (6 turtles), 14 and 12 (same 2 turtles), 38 (1 turtle), 13 (5 turtles)], and one adult male traveled there from a breeding area near Florida [37,38]. Despite 15 tracks/turtles tracked to the Bahamas, estimates of residence area size and characterizations of occupancy patterns at specific sites are limited (but see Additional file 1 showing previous estimates of loggerhead foraging area size in the Bahamas).…”

Section: Introductionmentioning

confidence: 88%

Bahamas connection: residence areas selected by breeding female loggerheads tagged in Dry Tortugas National Park, USA

Hart

Sartain

Fujisaki

2015

Animal Biotelemetry

View full text Add to dashboard Cite

Background: Delineation of home ranges, residence and foraging areas, and migration corridors is important for understanding the habitat needs for a given species. Recently, many population segments of Northwest Atlantic loggerhead sea turtles (Caretta caretta) were designated as endangered or threatened; the smallest subpopulation is in the Dry Tortugas. Foraging and residence areas for this subpopulation have not been defined outside the Gulf of Mexico. Here, for Dry Tortugas loggerheads that traveled to the Bahamas, we use a combination of switching state-space modeling (SSM) and home-range estimators to determine migration period, spatially delineate and describe residence areas, and examine inter-annual home-range repeatability.

show abstract

“…EPI and RBC reXect the turtle's dietary history over a longer period of time (at least 4.2 months) than PLA (at least 2 months) based on studies conducted with growing juvenile loggerheads (Reich et al 2008). Isotope turnover (i.e., the time the isotopic composition in the consumer tissue reaches equilibrium after a shift in resource use) for adult loggerheads may be longer because rates of isotopic incorporation slow with reduced growth rates (Reich et al 2008), Arendt et al (2012b) and because these rates are allometrically dependent on body mass (Carleton and Martínez del Rio 2005).…”

Section: Data and Sample Collectionmentioning

confidence: 98%

Distribution of foraging habitats of male loggerhead turtles (Caretta caretta) as revealed by stable isotopes and satellite telemetry

et al. 2012

Self Cite

View full text Add to dashboard Cite

Most studies on the foraging ecology of loggerhead turtles (Caretta caretta) have focused on adult females and juveniles. Little is known about the foraging patterns of adult male loggerheads. We analyzed tissues for carbon and nitrogen stable isotopes ( 13 C and 15 N) from 29 adult male loggerheads tracked with satellite transmitters from one breeding area in Florida, USA, to evaluate their foraging habitats in the Northwest Atlantic (NWA). Our study revealed large variations in 13 C and 15 N and a correlation between both 13 C and 15 N and the latitude to which the loggerheads traveled after the mating season, thus reXecting a geographic pattern in the isotopic signatures. Variation in 13 C and 15 N can be explained by diVerences in food web baseline isotopic signatures rather than diVerences in loggerhead trophic levels. Stable isotope analysis may help elucidate residency and migration patterns and identify foraging sea turtle subpopulations in the NWA due to the isotopically distinct habitats used by these highly migratory organisms.

show abstract

Migration, distribution, and diving behavior of adult male loggerhead sea turtles (Caretta caretta) following dispersal from a major breeding aggregation in the Western North Atlantic

Cited by 70 publications

References 43 publications

Age and size at maturation- and adult-stage duration for loggerhead sea turtles in the western North Atlantic

Age and size at maturation- and adult-stage duration for loggerhead sea turtles in the western North Atlantic

Bahamas connection: residence areas selected by breeding female loggerheads tagged in Dry Tortugas National Park, USA

Distribution of foraging habitats of male loggerhead turtles (Caretta caretta) as revealed by stable isotopes and satellite telemetry

Contact Info

Product

Resources

About