Neglecting cooler low-season nest protection could deprive sea turtle populations of valuable hatchlings

Tello-Sahagun, Luis Angel; Ley‐Quiñónez, César P.; Abreu-Grobois, F. Alberto; Monsinjon, Jonathan; Zavala‐Norzagaray, Alan A.; Girondot, Marc; Hart, Catherine E.

doi:10.1016/j.biocon.2022.109873

Cited by 3 publications

(2 citation statements)

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“…Our results showed significant differences in the daily mean temperature during the entire incubation period between the months of November and February, this variation could be associated with environmental factors such as rainfall related with storm and hurricane season occurring from May to November, as well as the thermal regimes (summer and winter) during the entire year (Mueller et al, 2019;Tello-Sahagún et al, 2023). The nesting season of olive ridley turtles in the Mexican Pacific lasts the full year, from the warmest months in summer (nest temperatures >34°C) until the colder winter months (nest temperatures <24°C) (Mueller et al, 2019).…”

Section: Effect Of Incubation Temperatures On the Fitness Proxiesmentioning

confidence: 66%

“…At Playa Escobilla, the arribada season begins in May and finishes in March of the following year, encompassing a rainy (June to November) and a dry season (December to May) (Hart et al, 2018; Peralta & Luna, 2016). In this context, the study by Tello‐Sahagún et al (2023) demonstrated that seasonality (dry and rainy seasons) has a differential effect on the size, weight, and locomotor capacities of olive ridley hatchlings. A small proportion of clutches laid during the dry season were exposed to low temperatures (29.09°C ± 0.52) and exhibited higher hatchling success and better locomotor performance; moreover, the hatchlings were larger and heavier.…”

Section: Discussionmentioning

confidence: 99%

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Influence of incubation temperature, maternal effects, and paternity on quality of olive ridley hatchlings (Lepidochelys olivacea) from a mass‐nesting beach in the Mexican Pacific

Labastida‐Estrada,

González‐Cortés,

Karam‐Martínez

et al. 2024

J Exp Zool Pt A

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Future climate change scenarios project that the increase in surface temperatures will affect ocean temperatures, inducing shifts in marine biodiversity. Sea turtles are species that are particularly vulnerable to the effects of climate change because temperature is a factor that influences embryonic development. We collected clutches of olive ridley turtles from a mass‐nesting beach in the Mexican Pacific, which were incubated in ex situ conditions. When the hatchlings emerged, we measured the body condition index—which evaluates the weight‐length relationship—and swim thrust, both were considered traits associated with fitness, termed “fitness proxies,” and evaluated the effects of incubation temperature, maternal effects, and paternity on these fitness proxies. The body condition index was correlated positively and significantly with the arribada month and temperature during the last third of the incubation period but showed an inverse relationship with the maternal effect. While swim thrust was positively correlated with the maternal effect and the arribada month, there was an inverse relationship with incubation temperature during the first third of the period. Paternity, whether single or multiple, did not have a significant effect on either fitness proxies; however, it may have effects on the average fitness of a population of hatchlings. These results underscore the need to expand research on the sublethal effects of high incubation temperatures on the adaptation and survival of sea turtles, particularly in scenarios of rapid climate change.

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Section: Effect Of Incubation Temperatures On the Fitness Proxiesmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%