Plasma hormone levels in the green turtle Chelonia mydas reared under captivity as a tool to predict mating and oviposition

Rubin, Olga; Soffer, Osher; Levy, Yaniv; Aizen, Joseph

doi:10.3389/fmars.2023.1132573

Cited by 2 publications

(2 citation statements)

References 72 publications

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“…Leatherback sea turtles are capital breeders that forage little to none during nesting season [63,68]. In addition to fasting, a nesting female also undergoes changes in hormone levels associated with reproduction [65][66][67], which has been shown to impact skin microbiota in humans [66,69]. Consequently, the microbiota data presented here for nesting leatherbacks may not reflect the normal microbiota of a foraging leatherback [6].…”

Section: Comparisons Between Carapace and Flipper On Nesting Femalesmentioning

confidence: 98%

“…Health assessments of nesting sea turtles are the most common due to the ease of accessing them during oviposition [61][62][63][64]. However, it is important to note that the physiologic state of the nesting female is highly unique and may influence the skin microbiota [65][66][67]. Leatherback sea turtles are capital breeders that forage little to none during nesting season [63,68].…”

Section: Comparisons Between Carapace and Flipper On Nesting Femalesmentioning

confidence: 99%

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Baseline Skin Microbiota of the Leatherback Sea Turtle

Kuschke,

Wyneken,

Miller

2024

Microorganisms

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The integumentary system of the leatherback sea turtle (Dermochelys coriacea) is the most visible and defining difference of the species, with its smooth and waxy carapace and finely scaled skin, distinguishing it from the other six sea turtle species. The skin is the body’s largest organ and serves as a primary defense against the outside world and is thus essential to health. To date, we have begun to understand that the microorganisms located on the skin aid in these functions. However, many host–microbial interactions are not yet fully defined or understood. Prior to uncovering these crucial host–microbial interactions, we must first understand the communities of microorganisms present and how they differ through life-stage classes and across the body. Here, we present a comprehensive bacterial microbial profile on the skin of leatherbacks. Using next-generation sequencing (NGS), we identified the major groups of bacteria on the skin of neonates at emergence, neonates at 3–4 weeks of age (i.e., post-hatchlings), and nesting females. These data show that the predominant bacteria on the skin of the leatherback are different at each life-stage class sampled. This suggests that there is a shift in the microbial communities of the skin associated with life-stage class or even possibly age. We also found that different sample locations on the nesting female (i.e., carapace and front appendages = flipper) have significantly different communities of bacteria present. This is likely due to differences in the microhabitats of these anatomic locations and future studies should explore if this variation also holds true for neonates. These data define baseline skin microbiota on the leatherback and can serve as a foundation for additional work to broaden our understanding of the leatherbacks’ host–microbial interactions, the impacts of environmental changes or stressors over time, and even the pathogenicity of disease processes.

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Section: Comparisons Between Carapace and Flipper On Nesting Femalesmentioning

confidence: 98%

Section: Comparisons Between Carapace and Flipper On Nesting Femalesmentioning

confidence: 99%

Baseline Skin Microbiota of the Leatherback Sea Turtle

Kuschke,

Wyneken,

Miller

2024

Microorganisms

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Evaluation of Biochemical Parameters in Caretta caretta Sea Turtles

Disclafani,

Galluzzo,

Schirò

et al. 2024

Veterinary Sciences

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The Caretta caretta is the only known sea turtle that nests along the coasts of the Mediterranean Sea. It is considered a vulnerable species by the International Union for Conservation of Nature (IUCN) because it is threatened by human activities. The aim of this work was to analyze biochemical parameters in different age groups of C. caretta subjects recovered at the Centro di Referenza Nazionale sul Benessere, Monitoraggio e Diagnostica delle Malattie delle Tartarughe Marine (C.Re.Ta.M.), Sicily. Biometric parameters were recorded for each subject. Peripheral blood was collected and centrifuged, and 18 biochemical parameters were analyzed. Glucose and total proteins showed lower values in juvenile turtles than in sub-adult and adult subjects. Since blood biochemical parameters can be influenced by several factors (age, sex, infectious disease, or trauma), we evaluated differences in the values of some parameters between the reproductive and non-reproductive seasons of adult turtles whose sex and cause of stranding could be determined. Despite the small number of subjects, it would seem that, in adult turtles, the values of ALP, γ-GT, Fe, and LDH are higher during the reproductive season. These biochemical variations showed important differences in the parameters, underlining their importance in assessing the health status of turtles and better understanding their physiology during different stages of their lives.

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Plasma hormone levels in the green turtle Chelonia mydas reared under captivity as a tool to predict mating and oviposition

Cited by 2 publications

References 72 publications

Baseline Skin Microbiota of the Leatherback Sea Turtle

Baseline Skin Microbiota of the Leatherback Sea Turtle

Evaluation of Biochemical Parameters in Caretta caretta Sea Turtles

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