Depth of the drying front and temperature affect emergence of leatherback turtle hatchlings from the nest

Swiggs, Jennifer; Paladino, Frank V.; Spotila, James R.; Tomillo, Pilar Santidrián

doi:10.1007/s00227-018-3350-y

Cited by 9 publications

(6 citation statements)

References 29 publications

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“…That is, the photochemical (mid- and far-IR) reaction might be the driving force for bioreproduction. Coincidentally, a turtle lays eggs and covers them up with wet sand, which perfectly avoids the mid- and far-IR absorption of water and might incubate the eggs under a photon radiation of approximately 30–45 THz (Figure a) . Therefore, the possible answer for the question of how a life system can present ultralow energy consumption in high-efficiency biosynthesis might be the photochemical (mid- and far-IR up-conversion) reaction in the process of directional molecular collective motion.…”

Section: Molecular Superfluidity In Biosynthesismentioning

confidence: 99%

From Dynamic Superwettability to Ionic/Molecular Superfluidity

2022

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Conspectus Life systems present ultralow energy consumption in high-efficiency energy conversion, information transmission, and biosynthesis. The total energy intake of the human body is about 2000 kcal/day to maintain all of our activities, which is comparable to a power of ∼100 W. The energy required for the brain to work is equivalent to ∼20 W, and the rest of the energy (∼80 W) is used for other activities. All in vivo biosyntheses take place only at body temperature, which is much lower than that of in vitro reactions. To achieve these ultralow energy-consumption processes, there should be a kind of ultralow-resistivity matter transport in nanochannels (e.g., ionic and molecular channels), in which the directional collective motion of ions or molecules is a necessary condition rather than traditional Newton diffusion. The directional collective motion of ions and molecules is considered to be ionic/molecular superfluidity. The driving force of ionic/molecular superfluidity formation requires two necessary conditions: (1) Ions or molecules are confined at a certain distance (e.g., approximately twice Debye length (2λD) for ions or twice the van der Waals equilibrium distance (2d 0) for molecules). (2) When the attractive potential energy (E 0) is stronger than the thermal noise (k B T c), ionic/molecular superfluidity can be formed. The concept of ionic/molecular superfluidity will promote the understanding of energy conversion with ultralow energy consumption in biological systems. The swing of an eel’s body generating electricity and cardiac resuscitation denote the conversion from mechanical energy to electrical energy, and mechanical modulation might result in a coherent resonance of ionic motion. The coherent resonance of Ca2+ in myocardium cells can induce a heartbeat, realizing the conversion from the electrical energy to the mechanical energy of a biological system. The macroscopic quantum state of ion channels is considered to be a carrier of neural information, and the environment field might play a significant role in regulating the macroscopic quantum states of various ion channels. In the biological ion channels system, the coupling of ion channels and their released photons might induce an environment wave which in turn regulates the ion oscillations in the channels to a coherent state. The states of decoherence and coherence might correspond to the states of sleep and action. We also demonstrated the decomposition of ATP to ADP released photons with a frequency of ∼34 THz, which could further drive DNA polymerization in the nanocavity of DNA polymerase. The photochemical (mid- and far-IR) reaction might be the driving force in high-efficiency biosynthesis. Quantized syntheses resonantly driven by multiple mid- and far-IR photons could be further designed in a tubular reactor with membranes of different microporous structures to achieve a high-efficiency synthesis with a low energy consumption. Finally, we point out that the Bose–Einstein condensate potentially widely exists. We expect that this...

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Section: Molecular Superfluidity In Biosynthesismentioning

confidence: 99%

From Dynamic Superwettability to Ionic/Molecular Superfluidity

2022

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“…Different species lay clutches at distinct depths where thermal conditions differ. [ 16,56 ] Due to their large size, leatherback turtles bury their eggs deep on the beach where the sand temperature is lower and more stable compared to that of other species. Because leatherback eggs experience a narrower range of temperature variation at depth, small changes in temperature to new thermal conditions can have a large effect.…”

Section: How Can Sea Turtles Adapt To Climate Change? a Model Of Coadmentioning

confidence: 99%

Temperature‐Dependent Sex Determination in Sea Turtles in the Context of Climate Change: Uncovering the Adaptive Significance

Tomillo

Spotila

2020

BioEssays

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The adaptive significance of temperature-dependent sex determination (TSD) in reptiles remains unknown decades after TSD was first identified in this group. Concurrently, there is growing concern about the effect that rising temperatures may have on species with TSD, potentially producing extremely biased sex ratios or offspring of only one sex. The current state-of the-art in TSD research on sea turtles is reviewed here and, against current paradigm, it is proposed that TSD provides an advantage under warming climates. By means of coadaptation between early survival and sex ratios, sea turtles are able to maintain populations. When offspring survival declines at high temperatures, the sex that increases future fecundity (females) is produced, increasing resilience to climate warming. TSD could have helped reptiles to survive mass extinctions in the past via this model. Flaws in research on sex determination in sea turtles are also identified and it is suggested that the development of new techniques will revolutionize the field.

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“…Nest placement is critical not only in terms of risks for flooding and depredation, but also for the nest microclimate, which determines whether eggs survive and hatch and the ratio of males to females as sex determination in sea turtles is temperature dependent (Mortimer 1990, Marco et al 2018. The nest microclimate is influenced by the overall climate of the beach as well as the placement of the nest in relation to the shoreline and vegetation (Kamel 2013, Swiggs et al 2018. Because of the complexity of risks and signals associated with nest site placement, many hypotheses for how females choose an exact location have been proposed and tested with varying factors found to be significant across species and populations; these site characteristics include beach slope, temperature, salinity, distance to vegetation, distance to high water line, and beach width (see Wood and Bjorndal 2000, Mazaris et al 2006, Pike 2008, Zavaleta-Liz arraga and Morales-M avil 2013.…”

Section: Introductionmentioning

confidence: 99%

Quantifying the impacts of future sea level rise on nesting sea turtles in the southeastern United States

Lyons

Holle

Caffrey

et al. 2020

Ecological Applications

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Sandy beaches, a necessary habitat for nesting sea turtles, are increasingly under threat as they become squeezed between human infrastructure and shorelines that are changing as a result of rising sea levels. Forecasting where shifting sandy beaches will be obstructed and how that directly impacts coastal nesting species is necessary for successful conservation and management. Predicting changes to coastal nesting areas is difficult because of a lack of consensus on the physical attributes used by females in nesting site choice. In this study, we leveraged long‐term data sets of nesting localities for two sea turtle species, loggerhead sea turtle, Caretta caretta, and green sea turtle, Chelonia mydas , within four barrier island National Seashores in the southeastern United States to predict future nesting beach area based on where these species currently nest in relation to mean high water. We predicted the future location of nesting areas based on a sea level rise scenario for 2100 and quantified how impervious surfaces will inhibit future beach movement, which will impact both the total available nesting area and the percentage of nesting area predicted to flood following a hurricane‐related storm surge. Contrary to our expectations, those barrier islands with the greatest levels of human infrastructure were not projected to experience the greatest percentage of sea turtle nesting area loss due to sea level rise or storm surge events. Notably, loss of nesting beach areas will not have equal impacts across the four Seashores; the Seashore projected to have the least amount of total nesting area lost and percentage nesting area lost currently has the highest nesting densities of our two study species, suggesting that even low levels of beach loss could have substantial impacts on future nesting densities and disproportionate impacts on the population growth of these species. Our novel method of estimating current and future nesting beach area can be broadly applied to studies requiring a bounded area that encompasses the part of a beach used by nesting coastal species and will be useful in comparing future global nesting densities and population trajectories under projected future sea level rise and storm surge activity.

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Depth of the drying front and temperature affect emergence of leatherback turtle hatchlings from the nest

Cited by 9 publications

References 29 publications

From Dynamic Superwettability to Ionic/Molecular Superfluidity

From Dynamic Superwettability to Ionic/Molecular Superfluidity

Temperature‐Dependent Sex Determination in Sea Turtles in the Context of Climate Change: Uncovering the Adaptive Significance

Quantifying the impacts of future sea level rise on nesting sea turtles in the southeastern United States

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