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Plastic Additives Disrupt Mating Behaviour in Crustaceans

A groundbreaking study reveals how plastic additives affect mating behaviour and sperm count in crustaceans, raising concerns about the broader impact on aquatic ecosystems. Explore the potential ecological consequences of our plastic addiction and the urgent need for awareness and action.

Plastic additives, pervasive in our environment, are now implicated in affecting the reproductive behaviour of shrimp-like crustaceans, warns a study by the University of Portsmouth. The malacostracan crustacean, Echinogammarus marinus, exposed to select plastic additives, exhibited reduced mating success and declining sperm count. Despite regulatory efforts, some of these compounds persist in England’s water sources, raising concerns about the broader impact on aquatic ecosystems. With just 20 companies contributing to over half of the world’s single-use plastic, the study underscores the potential role of plastic in Earth’s ecological challenges, urging increased awareness and action.


In a series of experiments, environmental toxicologist Bidemi Green-Ojo and team targeted four plastic additives, including regulated and unrestricted chemicals. The findings revealed that all tested substances induced changes in mating behaviour, with two chemicals, triphenyl phosphate (TPHP) and dibutyl phthalate (DBP), causing a notable decline in sperm count. The study’s lead ecotoxicologist, Alex Ford, emphasizes the importance of recognizing behavioural data in assessing the impact of plastic additives, calling for heightened attention from global environmental agencies.


The study sheds light on the alarming consequences of long-term exposure to plastic additives on animal health, signalling potential ecological ramifications. As just a handful of corporations contribute significantly to the world’s plastic production, the study raises questions about the role of human behaviour and the urgent need to understand and address the impact of these chemicals on essential animal behaviours crucial for survival.

As plastic continues to play a dominant role in our daily lives, understanding the repercussions of its additives on wildlife becomes paramount. Green-Ojo concludes, “Many types of behaviour – such as feeding, fight or flight mode, and reproduction – are essential in an animal’s life, and any abnormal behaviour may reduce the chances of survival.” The study calls for a comprehensive exploration of these chemicals and their effects, highlighting the critical need to mitigate our plastic dependency for the sake of global biodiversity.



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