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Elváltozásokat okoz a lenyelt műanyag a tengeri madarak szervezetében

„A műanyag mérgező. Ha egyszer a szervezetbe kerül, a benne lévő méreganyagok bekerülnek az állat véráramába” - írják a kutatók.
MTI, Fotó: Illusztráció/Pixabay - szmo.hu
2019. július 31.


hirdetés

Változásokat idéz elő a tengeri madarak szervezetében a lenyelt műanyaghulladék - erre figyelmeztettek ausztrál kutatók.

A Tasmaniai Egyetem Tengeri és Antarktiszi Tanulmányok Intézetének szakemberei az Ausztráliától keletre fekvő Lord Howe-sziget barna vészmadaraitól begyűjtött vérmintákat elemeztek. A mérsékelten fenyegetett faj populációja csökken Ausztráliában.

"A műanyaghulladék lenyelése közrejátszik ebben a csökkenésben, de hogy milyen módon van hatással a madarakra, arról eddig nem sokat tudtunk" - mondta Jennifer Lavers, az IMAS munkatársa, az Environmental Science and Technology című folyóiratban publikált tanulmány vezető szerzője.

A kutatók csökkent kalciumszintet mutattak ki azoknak a madarakban a vérében, amelyek műanyagot ettek. Ezeknek az állatoknak a testtömege is alacsonyabb volt, és a szárnyuk, a fejük és a csőrük hossza is eltért a többiekétől.

"A műanyag jelenléte a szervezetben negatív hatással van a madaraknál a vese működésére. Magasabb a húgysav koncentrációja, emellett a koleszterinre és az enzimekre is hatással van" - mondta Lavers.

"A műanyag mérgező. Ha egyszer a szervezetbe kerül, a benne lévő méreganyagok beszivárognak az állat véráramába és neurológiai, viselkedési, szaporodási problémákhoz vezetnek, illetve szélsőséges esetben az egyed halálát okozhatják"

- írták a kutatók a tanulmányban.


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hirdetés

Szeretlek Magyarország - szmo.hu
1970. január 01.




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hirdetés

Szeretlek Magyarország - szmo.hu
1970. január 01.




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hirdetés

Szeretlek Magyarország - szmo.hu
1970. január 01.




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hirdetés

Szeretlek Magyarország - szmo.hu
1970. január 01.




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