Morphologic and physiologic characteristics of green sea turtle (Chelonia mydas) hatchlings in southeastern Florida, USA

Page-Karjian, Annie; Stacy, Nicole I.; Morgan, Ashley S.; Coppenrath, Christina M.; Manire, Charles A.; Herbst, Lawrence H.; Perrault, Justin R.

doi:10.1007/s00360-022-01450-9

Cited by 4 publications

(3 citation statements)

References 80 publications

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“…There are currently two hypotheses: horizontal transmission through direct contact with tumors/secretions or through vectors and water [50] and vertical transmission, as recent analyses have reported the presence of ChHV5 in pups [57]. However, in another study, the pups tested negative despite coming from mothers that tested positive using the same method [58].…”

Section: Association Of Fp With the Chhv5 Virus In Sea Turtlesmentioning

confidence: 98%

Fibropapillamatosis: A Review of the Disease with Attention to the Situation Northern Coast of Brazil

da Cruz,

Gattamorta,

Matushima

et al. 2024

Preprint

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Fibropapillomatosis in sea turtles is a potentially debilitating and fatal disease for which there is still a lack of knowledge, especially for specific regions of Brazil. The diagnosis is made through the observation of clinical manifestations, and despite its association with Chelonid Alphaherpesvirus 5 (ChHV5) as the etiological agent, the expression of the disease may also be related to immunological and environmental factors caused by anthropic degradation of the environment. Thus, this review aims to elucidate what is known about this disease globally and especially in various regions of Brazil, promoting a better understanding of its evolution, spatiotemporal prevalence and relationship with human activities. Furthermore, the review explores the molecular biology of ChHV5, including its genomic structure, replication cycle, and mechanisms of pathogenesis. The role of environmental factors, such as temperature and pollution, in modulating ChHV5 infection and FP development is also discussed. Additionally, the review summarizes current diagnostic methods for detecting ChHV5 infection in sea turtles, highlighting the importance of early detection and monitoring for effective disease management and conservation efforts. Finally, the review outlines future research directions aimed at improving our understanding of ChHV5 and developing strategies for FP control and prevention in sea turtle populations.

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Section: Association Of Fp With the Chhv5 Virus In Sea Turtlesmentioning

confidence: 98%

Fibropapillamatosis: A Review of the Disease with Attention to the Situation Northern Coast of Brazil

da Cruz,

Gattamorta,

Matushima

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…There are currently two hypotheses as follows: horizontal transmission through direct contact with tumors/secretions or through vectors and water [ 53 ], and vertical transmission as recent analyses have reported the presence of ChHV5 in hatchlings [ 60 ]. However, in another study, the hatchlings tested negative despite coming from mothers that tested positive using the same method [ 61 ].…”

Section: Association Of Fp With the Chhv5 Virus In Sea Turtlesmentioning

confidence: 99%

Fibropapillomatosis: A Review of the Disease with Attention to the Situation Northern Coast of Brazil

da Cruz,

Gattamorta,

Matushima

et al. 2024

Animals

View full text Add to dashboard Cite

Fibropapillomatosis in sea turtles is a potentially debilitating and fatal disease for which there is still a lack of knowledge, especially for specific regions of Brazil. The diagnosis is made through the observation of clinical manifestations, and despite its association with Chelonid Alphaherpesvirus 5 (ChHV5) as the etiological agent, the expression of the disease may also be related to immunological and environmental factors caused by anthropic degradation of the environment. Thus, this review aims to elucidate what is known about this disease globally, and especially in various regions of Brazil, promoting a better understanding of its evolution, spatiotemporal prevalence, and relationship with human activities. Furthermore, the review explores the molecular biology of ChHV5, including its genomic structure, replication cycle, and mechanisms of pathogenesis. The role of environmental factors, such as temperature and pollution, in modulating ChHV5 infection and FP development is also discussed. Additionally, the review summarizes current diagnostic methods for detecting ChHV5 infection in sea turtles, highlighting the importance of early detection and monitoring for effective disease management and conservation efforts. Finally, the review outlines future research directions aimed at improving our understanding of ChHV5 and developing strategies for FP control and prevention in sea turtle populations.

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“…However, more recent studies have found that moderate-to high-temperature scenarios still lead to declining northern GBR green turtle populations (Blechschmidt et al, 2020), and that female-skewed sex ratios take time to manifest within populations (Hays et al, 2023). Additional concerns that can compound nest feminization include sea turtle nests reaching upper thermal thresholds, reducing hatchling health and survival (Fuentes et al, 2011;Fleming et al, 2020;Page-Karjian et al, 2022). For example, loggerhead sea turtles nesting within Cabo Verde islands are predicted to reach over 99% female hatchling production, with 90% of nests reaching upper thermal limits under current climate change predictions (Tanner et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Exploring contaminants as a disruptor of temperature-dependent sex determination in sea turtle hatchlings

Barraza,

Young,

Smith

et al. 2023

Front. Mar. Sci.

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Sea turtle nesting beaches are experiencing increased sand temperatures as climate change progresses. In one major green turtle (Chelonia mydas) nesting beach in the northern Great Barrier Reef, over 99 percent of hatchlings are female. The effects of contaminants on sea turtle hatchling sex determination are not often explored. Liver samples were collected from green turtle hatchlings that were sacrificed for histological sex determination in a parallel study on the effects of sand cooling on sex ratios, and analysed for trace elements via acid digestion and organic contaminants via in vitro cytotoxicity bioassays. Chromium, antimony, barium, and cadmium have previously been demonstrated to be estrogenic, and concentrations of these elements were used to calculate three estrogenic indexes for each clutch: predicted relative estrogenic potency (PEEQA), the sum of percent trace elements above the median of all samples (TEOM), and the sum of percent estrogenic elements above the median of all samples (EstroEOM). Excluding an outlier clutch, cadmium, antimony, and EstroEOM had significant positive relationships with sex ratio deviation. Mean clutch cobalt, lead, antimony and barium, also had a significant positive relationship with clutch sex ratio. There was no relationship between in vitro cytotoxicity of liver extracts and sex ratio, however, 9% of hatchlings had organic contaminants high enough to suggest potential cellular damage. Contaminant effects on sex determination are likely to be caused by a mixture of contaminant interactions as well as temperature. Many trace elements detected in this study have also been linked to negative health effects on hatchlings in previous studies. Considering the risks of feminization due to climate change and potential contaminant effects on hatchling health and sex determination, future studies exploring contaminant effects on sea turtle hatchling sex determination are recommended.

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Morphologic and physiologic characteristics of green sea turtle (Chelonia mydas) hatchlings in southeastern Florida, USA

Cited by 4 publications

References 80 publications

Fibropapillamatosis: A Review of the Disease with Attention to the Situation Northern Coast of Brazil

Fibropapillamatosis: A Review of the Disease with Attention to the Situation Northern Coast of Brazil

Fibropapillomatosis: A Review of the Disease with Attention to the Situation Northern Coast of Brazil

Exploring contaminants as a disruptor of temperature-dependent sex determination in sea turtle hatchlings

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