Intra-specific variation in skull morphology of juvenile Chelonia mydas in the southwestern Atlantic Ocean

@article{Coelho2018IntraspecificVI,
  title={Intra-specific variation in skull morphology of juvenile Chelonia mydas in the southwestern Atlantic Ocean},
  author={Val{\'e}ria F. Coelho and Camila Domit and Matt K. Broadhurst and Laura Prosdocimi and Hideaki Nishizawa and Fernanda Sim{\~o}es de Almeida},
  journal={Marine Biology},
  year={2018},
  volume={165},
  pages={1-12}
}
The genetic diversity and skull morphology of juvenile Chelonia mydas recruited to the southwestern Atlantic were evaluated to quantify intraspecific variation in the skull shape and size related to (1) broad geographic origin and (2) age (within the most abundant haplotype). 155 C. mydas stranded at 25o S in Brazil were sampled, with 108 assessed for haplotypes (mtDNA) and 102 aged. The hypothesis of no effects of intrinsic variables on the morphology of three skull views was evaluated via 2D… Expand
Multiple haplotypes of Chelonia mydas juveniles in a threatened hotspot area in Southern Brazil
Abstract Mixed stocks are described for Chelonia mydas and the frequency of haplotypes in feeding areas can aid understanding of the genetic and ecological diversity, since with this information itExpand
High incidence of sea turtle stranding in the southwestern Atlantic Ocean
Sea turtles are globally threatened due to short- and long-term exposure to anthropogenic activities. Many life-history traits make it difficult to study these species in the wild. Stranding eventsExpand
Chelonid Alphaherpesvirus 5 DNA in Fibropapillomatosis-Affected Chelonia mydas
TLDR
Significantly lower levels of seven blood parameters, but greater numbers of eosinophils, were observed in tumour-afflicted animals, and these observations were attributed to metabolism efficiencies and/or differences in diet associated with temporal-recruitment bias and disease development, and greater non-specific immune stimulation. Expand
Selectivity of marine-debris ingestion by juvenile green turtles (Chelonia mydas) at a South American World Heritage Listed area.
TLDR
There is a need for long-term reforms to regional waste disposal and short-term initiatives encouraging social awareness to avoid key plastics and reduce ingestion by C. mydas. Expand
Integrating morphological and genetic data at different spatial scales in a cosmopolitan marine turtle species: challenges for management and conservation
ROCÍO ÁLVAREZ-VARAS1,2,3*, MAIKE HEIDEMEYER4, CYNTHIA RIGINOS5, HUGO A. BENÍTEZ6, , EDUARDO RESÉNDIZ7, MÓNICA LARA-UC7, DANIEL A. GODOY8, JUAN PABLO MUÑOZ-PÉREZ9,10, DANIELA E. ALARCÓN-RUALES9,Expand
Genetics and Molecular Biology
Host shifts, when a cross-species transmission of a pathogen can lead to successful infections, are the main cause of emerging infectious diseases, such as COVID-19. A complex challenge faced by theExpand

References

SHOWING 1-10 OF 74 REFERENCES
Appropriate morphometrics for the first assessment of juvenile green turtle (Chelonia mydas) age and growth in the south-western Atlantic
TLDR
The observed CCL growth was comparable to recent estimates for other global populations, but with southern Brazilian C. mydas generally having larger sizes-at-age, which can be attributed not only to regional prerecruitment environmental parameters and associated ecological implications (e.g. foraging ecology), but also divergent analytical methods. Expand
Geographic Variation in Skull Morphology of the Green Turtle, Chelonia mydas, with a Taxonomic Discussion
TLDR
The Galapagos sample was completely separated from other samples by a canonical discriminant analysis, and this result indicates distinctness of the eastern Pacific population, C. mydas agassizii, but not as a distinct species. Expand
Mitochondrial DNA diversity and phylogeography of endangered green turtle (Chelonia mydas) populations in Africa
TLDR
It is argued that demographic histories can be explained by scenarios at several temporal scales, including geological events, sea level fluctuations and more recent patterns of exploitation, to be consistent with recent population expansion. Expand
Green turtles (Chelonia mydas) foraging at Arvoredo Island in Southern Brazil: Genetic characterization and mixed stock analysis through mtDNA control region haplotypes
TLDR
These results demonstrate the extensive relationships between Arvoredo Island and other Atlantic foraging and breeding areas and provides a framework for establishing adequate management and conservation strategies for this endangered species. Expand
Molecular evolution and population genetics of Greater Caribbean green turtles (Chelonia mydas) as inferred from mitochondrial DNA control region sequences
TLDR
Sequence analyses of within- and between-population diversity revealed a deep divergence between western and eastern Caribbean nesting colonies and an inverse relationship between reproductive female population size and mtDNA diversity. Expand
Green turtle (Chelonia mydas) genetic diversity at Paranaguá Estuarine Complex feeding grounds in Brazil
TLDR
Assessment of genetic composition, natal origins and demographic history of juvenile green turtles at the Paranaguá Estuarine Complex, Brazil, reinforces the hypothesis of recovery from Southern Atlantic refugia after the last Glacial Maximum and contributes to a better understanding of the dynamics of green turtle populations at a protected area. Expand
Testing dispersal hypotheses in foraging green sea turtles (Chelonia mydas) of Brazil.
TLDR
Results are consistent with a model of juvenile natal homing impacted by other factors, and effective protection of turtles foraging along the extensive Brazilian coast may enhance breeding populations thousands of kilometers away. Expand
The interplay of homing and dispersal in green turtles: a focus on the southwestern atlantic.
TLDR
Impacts of population size, geographic distance, ocean currents, and juvenile natal homing on connectivity, addressed calls for increased genetic sampling in the southwestern Atlantic, and provided data important for conservation of globally endangered green turtles. Expand
Phylogeography and population structure of the Atlantic and Mediterranean green turtle Chelonia mydas: a mitochondrial DNA control region sequence assessment
TLDR
The sequence data provide higher resolution both in terms of the number of mtDNA genotype variants and the phylogeographic relationships detected within the Atlantic region, and reveal a gene genealogy that distinguishes two groups of haplotypes corresponding to the western Caribbean and Mediterranean, and (ii) eastern Caribbean, South Atlantic and West Africa. Expand
Ecological correlates and evolutionary divergence in the skull of turtles: a geometric morphometric assessment.
TLDR
The adaptive radiation of the Testudinoidea is revealed to demonstrate a clear relationship between the skull shape and life style, and it is revealed that morphological specialization was related to both diet and habitat. Expand
...
1
2
3
4
5
...