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Microplastics may heat marine turtle nests and produce more females
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Researchers found that microplastics scattered across sea turtle nesting beaches may raise nest temperatures, potentially skewing hatchling sex ratios toward females — which is already occurring due to climate change. This double pressure from plastic pollution and warming could further threaten already endangered sea turtle populations.
Little chunks of plastic are now scattered throughout the oceans and pollute most beaches around the world, including the nesting sites of threatened and endangered sea turtles.
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Microplastics and sea turtle reproduction: A systematic review on nest contamination and developmental risks
AI summary
This research examined the ecotoxicological effects of microplastic exposure on freshwater stingrays, assessing behavioral, physiological, and reproductive impacts in a Neotropical elasmobranch species. The study provides novel data on microplastic effects in cartilaginous fish, expanding ecotoxicological understanding beyond teleost fish models.
The effects of microplastic on the thermal profile of sand: implications for marine turtle nesting grounds
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Researchers examined how microplastic contamination in beach sand affects thermal profiles relevant to marine turtle nesting, finding that MPs altered sand temperature dynamics in ways that could influence egg incubation and hatchling sex ratios.
The Effects of Microplastics on the Thermal Profile of Sand: Implications for Marine Turtle Nesting Grounds
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This study found that microplastic contamination in beach sediments can alter the thermal profile of sand nesting grounds for marine turtles, with plastic particles changing temperature and permeability in ways that could affect embryo development and sex ratios of hatchlings — a direct threat to an endangered species.
Plastic Pollution and Its Ecological Impacts on Sea Turtles: A Comprehensive Review
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Researchers reviewed the full spectrum of plastic pollution threats to all seven sea turtle species, covering ingestion-driven gastrointestinal obstruction and nutritional dilution, entanglement injuries, and the effects of beach plastic accumulation on nest temperature, hatchling success, and sex ratios.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.