Genetic structure of Florida green turtle rookeries as indicated by mitochondrial DNA control region sequences

Shamblin, Brian M.; Bagley, Dean A.; Ehrhart, Llewellyn M.; Desjardin, Nicole A.; Martin, R. Erik; Hart, Kristen M.; Naro‐Maciel, Eugênia; Rusenko, Kirt; Stiner, John C.; Sobel, Debra; Johnson, Constance A.; Wilmers, Thomas J.; Wright, Laura J.; Nairn, Campbell J.

doi:10.1007/s10592-014-0692-y

Cited by 33 publications

(56 citation statements)

References 61 publications

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“…Galápagos rookeries (GPS) apparently constitute a single individual genetic stock (the Galápagos MU; Dutton et al 2014a) that has very limited connectivity to other rookeries across the EP. Some rookeries that are separated by a distance of approximately 500 km or more are commonly considered independent genetic stocks (Dethmers et al 2006, Browne et al 2010, Dutton et al 2014a, Shamblin et al 2015. Thus the distance between MNP and GPS rookeries (ca.…”

Section: Introductionmentioning

confidence: 99%

Connectivity, population structure, and conservation of Ecuadorian green sea turtles

Chaves¹,

Peña²,

Valdés-Uribe³

et al. 2017

Endang. Species. Res.

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Section: Introductionmentioning

confidence: 99%

Connectivity, population structure, and conservation of Ecuadorian green sea turtles

Chaves¹,

Peña²,

Valdés-Uribe³

et al. 2017

Endang. Species. Res.

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“…First, sequencing of the mtDNA control region (490 bp) from nine Atlantic and Mediterranean rookeries detected 6-fold greater genetic diversity compared to previous RFLP data (Encalada et al, 1996), significantly improving stock structure resolution and identifying at least six management units (MUs; see Box 2 for additional discussion of conservation units). Further progress was then made by increasing sampling sizes and coverage in the Florida nesting aggregation, clearly demonstrating that Florida is genetically distinct from the Quintana Roo, Mexico rookery and identifying at least two MUs within Florida, separated by the St. Lucie Inlet (Shamblin et al, 2015a). Additional studies added novel rookeries and increased sample sizes regionally in the Atlantic, resulting in the recognition of a total of 12-13 MUs using mtDNA control region haplotypes (490 or 817 bp, see Box 1; Bjorndal et al, 2006;Formia et al, 2006;Ruiz-Urquiola et al, 2010;Shamblin et al, 2015b).…”

Section: How Are Rookeries Connected To Each Other and Linked To Foramentioning

confidence: 99%

“…This introduced the possibility of dispersal from the Mediterranean into the western Atlantic (Bjorndal and Bolten, 2008;Anderson et al, 2013). However, this haplotype was later found to occur at low frequency in the Florida nesting aggregation (Shamblin et al, 2015a). Analysis of the mtSTR for CM-A13 turtles nesting and foraging in Florida yielded a shared repeat haplotype that was not among the 33 described thus far from the Mediterranean (Tikochinski et al, 2012), revealing that the foraging turtles most likely originated locally within the Greater Caribbean region (Shamblin et al, 2015b).…”

Section: Green Turtle Habitat Connectivity: Which Nesting Stocks Use mentioning

confidence: 99%

“…Analysis of the mtSTR for CM-A13 turtles nesting and foraging in Florida yielded a shared repeat haplotype that was not among the 33 described thus far from the Mediterranean (Tikochinski et al, 2012), revealing that the foraging turtles most likely originated locally within the Greater Caribbean region (Shamblin et al, 2015b). In a second example, in the northern Greater Caribbean region, CM-A1 and CM-A3 are the dominant haplotypes shared among the rookeries of Quintana Roo, Mexico; Guanahacabibes Peninsula, Cuba; and Florida rookeries (Encalada et al, 1996;Ruiz-Urquiola et al, 2010;Shamblin et al, 2015a). An MSA of juvenile green turtles in Texas foraging grounds suggested a large Florida rookery contribution based on the presence of these haplotypes at high frequencies (Anderson et al, 2013).…”

Section: Green Turtle Habitat Connectivity: Which Nesting Stocks Use mentioning

confidence: 99%

“…An MSA of juvenile green turtles in Texas foraging grounds suggested a large Florida rookery contribution based on the presence of these haplotypes at high frequencies (Anderson et al, 2013). Yet later analysis of the green turtle rookery at Rancho Nuevo, Tamaulipas, Mexico found CM-A1 and CM-A3 in the same frequencies as the central Florida MU, so the source of the majority of juveniles foraging in Texas remained unresolved using standard markers (Shamblin et al, 2015a(Shamblin et al, , 2017. However, mitogenomic sequencing of the CM-A1 females nesting in Rancho Nuevo and Florida identified a single diagnostic mtDNA SNP between the two rookeries.…”

Section: Green Turtle Habitat Connectivity: Which Nesting Stocks Use mentioning

confidence: 99%

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Advances in the Application of Genetics in Marine Turtle Biology and Conservation

et al. 2017

Self Cite

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Marine turtles migrate across long distances, exhibit complex life histories, and occupy habitats that are difficult to observe. These factors present substantial challenges to understanding fundamental aspects of their biology or assessing human impacts, many of which are important for the effective conservation of these threatened and endangered species. The early development and application of genetic tools made important contributions to understanding marine turtle population and evolutionary biology, such as providing evidence of regional natal homing by breeding adults, establishing connectivity between rookeries and foraging habitats, and determining phylogeography and broad scale stock structure for most marine turtle species. Recent innovations in molecular technologies, statistical methods, and creative application of genetic tools have significantly built upon this knowledge to address key questions in marine turtle biology and conservation management. Here, we evaluate the latest major advances and potential of marine turtle genetic applications, including improved resolution and large-scale syntheses of population structure, connectivity and phylogeography, estimation of key demographic rates such as age to maturity and operational or breeding sex ratios, insight into reproductive strategies and behavior, and assessment of differential human impacts among populations. We then discuss remaining challenges and emerging capabilities, such as rapid, multiplexed genotyping, and investigation of the genomic underpinnings of adaptive variation afforded by high-throughput sequencing technologies.

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Genetic structure, origin, and connectivity between nesting and foraging areas of hawksbill turtles of the Yucatan Peninsula: A study for conservation and management

Labastida‐Estrada

Machkour‐M’Rabet

Díaz‐Jaimes

et al. 2019

Aquatic Conservation

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1. Anthropogenic activities have resulted in declines in many marine turtle populations. Their complex life cycle (e.g. female philopatry, hatchling migration, adult movements between breeding and foraging areas) makes it difficult to fully understand some of the biological implications of human impacts on their populations, but genetic tools can play a major role in understanding population dynamics and thus improve conservation and management strategies. 2. Using the mitochondrial DNA control region, this study examines the composition, population structure, and connectivity between rookeries and foraging aggregations, in addition to their relationship with Atlantic rookeries and foraging areas of the hawksbill turtle in the Yucatan Peninsula. 3. Haplotype composition of rookeries showed EiA22, EiA39, and EiA41 as endemic haplotypes and revealed a segregation between the Gulf of Mexico and the Yucatan and Quintana Roo rookeries, defining two management units. Foraging aggregations present 15 haplotypes, some common for Atlantic and others for Mexican rookeries. Considering the Gulf of Mexico versus the Mexican Caribbean, significant population genetic structure was revealed, inferring a differential recruitment of hawksbill turtles. 4. Rookery-centric mixed-stock analysis reveals a high contribution of Mexican turtles to local foraging aggregations, principally in the Gulf of Mexico. Foraging-groundcentric mixed-stock analysis showed that the Gulf of Mexico foraging aggregation is predominantly composed of individuals from local rookeries, whereas Mexican Caribbean foraging groups have a mixed composition with individuals from Barbados, Brazil, and Puerto Rico rookeries. The connectivity between rookeries and foraging aggregations suggests that the ocean currents and swimming behaviour influence the distribution of hawksbill turtles. 5. Our results highlighted the importance in identifying management units in nesting and foraging areas to develop monitoring and management programmes at

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Genetic structure of Florida green turtle rookeries as indicated by mitochondrial DNA control region sequences

Cited by 33 publications

References 61 publications

Connectivity, population structure, and conservation of Ecuadorian green sea turtles

Connectivity, population structure, and conservation of Ecuadorian green sea turtles

Advances in the Application of Genetics in Marine Turtle Biology and Conservation

Genetic structure, origin, and connectivity between nesting and foraging areas of hawksbill turtles of the Yucatan Peninsula: A study for conservation and management

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