Cricri1956
Question de Cricri1956


Une espèce de dauphin inconnue découverte au brésil



L'Araguaia, une toute nouvelle espèce de dauphin de rivière, a été découverte au Brésil. Une première depuis 1918.



Vivant dans les eaux brésiliennes de la rivière Araguaia dont il tire son nom, ce dauphin est la première espèce du genre découverte depuis 1918. Des chercheurs ont révélé son existence sur le site Plos One, relayé par la BBC.



Les chercheurs estiment que cette nouvelle famille de dauphins des rivères -la cinquième connue à ce jour- serait issue de plusieurs autres espèces vivant en Amérique du sud et compterait environs 1000 individus.



Très éloignés de leurs cousins les dauphins de mer, les dauphins de rivière -comptant parmi les plus rares au monde- se caractérisent par leur long bec leur permettant de débusquer le poisson dans la boue qui tapit le fond des rivières.

Parmi eux, le dauphin rose, vivant dans les eaux de l'Amazonie est considéré comme l'une des plus intelligentes.

L'Araguaia pourrait être son proche parent; seul le nombre de dents, une taille -plus petite- et leur ADN diffèrent. Leur séparation ayant eu lieu il y a plus de 2 millions d'années.

il y a surement pleins d’espèce d'animaux marin que l'on ne connaîtra jamais .


Il y a
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3 ans
Meilleure réponse
Claudine670

C'est un super animal, le dauphin , et j'ignorais qu'il y en avait aussi en eau douce.


Il y a
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3 ans
Réponses (3)
Missdebrouille
Chaque jours des espèces disparaissent hélas et d 'autres méconnues sont découvertes ainsi va la vie. j 'ai lu sur GEO un reportage la dessus

Il y a
Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/inc/function-question-reponse.inc.php on line 9

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/inc/function-question-reponse.inc.php on line 15

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/inc/function-question-reponse.inc.php on line 15
3 ans

Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/question.php on line 1155
Claudine670
Merci Cricri pour la sélection de ma réponse et très bon vendredi à toi, bisous.

Il y a
Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/inc/function-question-reponse.inc.php on line 9

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/inc/function-question-reponse.inc.php on line 15

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/inc/function-question-reponse.inc.php on line 15
3 ans

Warning: mktime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/web/elleraconte.com/www/question.php on line 1155
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