Swimming performance of hatchling green turtles is affected by incubation temperature

Burgess, Elizabeth A.; Booth, David T.; Lanyon, Janet M.

doi:10.1007/s00338-006-0116-7

Cited by 97 publications

(119 citation statements)

References 24 publications

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“…The loggerhead is arguably the most ecologically generalized marine turtle, being globally distributed and having one of the least specialized diets of all marine turtle species, making it an ideal model species in which to assess the impact of global abiotic stress (Bolten and Witherington 2003). Given what has been presented in laboratory-based studies of freshwater turtles and other reptiles (Ashmore and Janzen 2003;Booth 2006;Micheli-Campbell et al 2012), we hypothesize an inverse relationship between thermal variance and offspring mass, in which greater diel temperature fluctuations during incubation will produce smaller offspring. Detecting such a relationship will bring us closer to understanding the link between thermal variance and phenotype in reptilian species.…”

Section: Introductionmentioning

confidence: 88%

“…Abiotic factors can have a profound influence on embryonic development in reptiles, notably, temperature (Booth 2006). Thermal environmental shifts have the power to influence numerous aspects of egg incubation, such as incubation duration, offspring sex ratios, hatching success, morphology, and locomotor performance, in a vast number of reptile species (Godfrey et al 1999;Brana and Ji 2000;Godley et al 2001;Ashmore and Janzen 2003;Booth 2006;Witt et al 2010;Refsnider 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Thermal environmental shifts have the power to influence numerous aspects of egg incubation, such as incubation duration, offspring sex ratios, hatching success, morphology, and locomotor performance, in a vast number of reptile species (Godfrey et al 1999;Brana and Ji 2000;Godley et al 2001;Ashmore and Janzen 2003;Booth 2006;Witt et al 2010;Refsnider 2013). Given climate change predictions and their associated risks to biodiversity (Sala et al 2000;Thomas et al 2004;Hansen et al 2006;Goodess et al 2011), it is becoming increasingly important that we seek to quantify and understand the potential environmental pressures that threaten the survival of vulnerable wild reptile populations, whose life strategies are inherently linked with climate.…”

Section: Introductionmentioning

confidence: 99%

“…The results of such studies are by no means universal, as highlighted in Booth (2006), in which contradictory findings from a range of investigations into the relationship between incubation temperature and offspring locomotor performance, as well as posthatch growth rates, are presented for freshwater turtles, lizards, snakes, and crocodilians.…”

Section: Introductionmentioning

confidence: 99%

“…Marine turtles have been at a progressively greater risk from abiotic stress over the past 2 decades, particularly in the Mediterranean, where temperature extremes have continued to rise (Sala et al 2000;Hansen et al 2006;Goodess et al 2011). While some may argue that, despite extensive climatic shifts, reptiles have persisted for millennia, such changes most likely occurred gradually, allowing species to adjust, adapt, and evolve to their changing environment over time (Booth 2006). The current anthropologically forced rate of change far exceeds that experienced in the past, and the Mediterranean region is predicted to undergo one of the greatest changes in biodiversity globally (Sala et al 2000;Goodess et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Thermal Variance on the Phenotype of Marine Turtle Offspring

Horne¹,

Fuller²,

Godley³

et al. 2014

Physiological and Biochemical Zoology

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Temperature can have a profound effect on the phenotype of reptilian offspring, yet the bulk of current research considers the effects of constant incubation temperatures on offspring morphology, with few studies examining the natural thermal variance that occurs in the wild. Over two consecutive nesting seasons, we placed temperature data loggers in 57 naturally incubating clutches of loggerhead sea turtles Caretta caretta and found that greater diel thermal variance during incubation significantly reduced offspring mass, potentially reducing survival of hatchlings during their journey from the nest to offshore waters and beyond. With predicted scenarios of climate change, behavioral plasticity in nest site selection may be key for the survival of ectothermic species, particularly those with temperature-dependent sex determination.

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Effect of Thermal Variance on the Phenotype of Marine Turtle Offspring

Horne¹,

Fuller²,

Godley³

et al. 2014

Physiological and Biochemical Zoology

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The “dog paddle”: Stereotypic swimming gait pattern in different dog breeds

Fish

DiNenno

Trail

2020

The Anatomical Record

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The term “dog paddle” has been applied to the swimming behavior of various terrestrial and aquatic species. Dog paddling refers to a form of drag‐based, paddle propulsion in which the limbs are oriented underneath the body and moved through an arc. Despite the ubiquity of the term, there has been no analysis of the swimming kinematics of dogs. Underwater video was recorded of surface swimming dogs (velocity: 0.4–1.1 m/s) for eight individuals from six breeds, ranging in size from Yorkshire Terrier (3.6 kg) to Newfoundland dog (63.5 kg). The quadrupedal paddling stroke was analyzed to determine kinematics and coordination of the limbs. The paddling stroke represented a modified terrestrial gait, which was outside typical gaits for terrestrial locomotion by dogs. Stroke frequency decreased with increasing body size. The stroke cycle consisted of power and recovery phases. During the power phase, digits of the paw were abducted and the forelimb was swept posteriorly until perpendicular to the body. In the recovery phase, digits were adducted while the brachium was retracted anteriorly and the manus supinated. The power phase was about 34% of stroke cycle and shorter than the recovery phase for both fore and hindlimbs. Maximum velocity during the power phase was greater than the recovery phase. The modified terrestrial gait used for swimming by dogs appears to be stereotypic among breeds, whereas terrestrial locomotion in dogs shows substantial variation in gait. Without constraints imposed by gravity and substrate contact, swimming dogs can utilize a gait profile different from terrestrial gaits. Summary Statement Despite the ubiquity of the term “dog paddle” to describe the swimming motions of animals, this is the first time that the swimming motions of dogs have been analyzed.

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Incubation temperature induced phenotypic plasticity in oviparous reptiles: Where to next?

Booth

2018

J Exp Zool Pt A

Self Cite

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It is now undisputable that incubation temperature induces different phenotypes (sex, body size, body shape, behavior, and locomotion performance) in many if not most oviparous reptiles. These incubation temperature induced differences in phenotype are assumed to result in differential fitness among hatchlings and therefore to play an important role in recruitment of hatchlings and persistence of reptile populations. However, the role of incubation temperature induced differences in hatchling phenotypes in determining hatchling fitness is still under explored and needs more empirical study. This information is especially needed when making predictions on how climate change and its associated nest warming may affect long term persistence of oviparous reptile populations. Curiously, the ontogenetic and physiological mechanisms responsible for incubation temperature induced differences in hatchling reptile locomotion performance are still unknown. In this article, I review the literature on incubation temperature induced differences in hatchling locomotion performance and summarize what is known about this phenomenon and its influence on hatchling fitness. I discuss how the anticipated detrimental effects on hatchling locomotion performance caused by increased nest temperature associated with climate warming could be ameliorated. I also explore the most likely physiological mechanisms underlying incubation temperature induced differences in hatchling locomotion performance and how these mechanisms might be induced. Finally, I highlight current knowledge gaps in our understanding of incubation temperature induced phenotypic plasticity and suggest directions for future research.

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Swimming performance of hatchling green turtles is affected by incubation temperature

Cited by 97 publications

References 24 publications

The Effect of Thermal Variance on the Phenotype of Marine Turtle Offspring

The Effect of Thermal Variance on the Phenotype of Marine Turtle Offspring

The “dog paddle”: Stereotypic swimming gait pattern in different dog breeds

Incubation temperature induced phenotypic plasticity in oviparous reptiles: Where to next?

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