Neophocaena phocaenoides Índice Descripción Población y distribución Conservación Referencias Enlaces externos Menú de navegación«Neophocaena phocaenoides»

Cetáceos en peligro de extinciónPhocoenidaeGéneros monotípicos de mamíferosAnimales descritos en 1829


especiecetáceoodontocetofamiliaPhocoenidaemarsopaJapónrío YangtzeChinapecescamaronescefalópodosAsiaIndiaChinaIndonesiaJapónrío Yangtzemmar AmarilloChinarío Yangtze

























Symbol question.svg

 

Marsopa sin aleta

Neophocaena phocaenoides -Miyajima Aquarium -Japan-8a.jpg

Finless porpoise size.svg
Comparación del tamaño de una marsopa con un hombre promedio

Estado de conservación

En peligro (EN)
En peligro (UICN 3.1)[1]​
Taxonomía

Reino:
Animalia

Filo:
Chordata

Clase:
Mammalia
Subclase:
Eutheria
Superorden:
Cetartiodactyla

Orden:
Cetacea
Suborden:
Odontoceti

Familia:
Phocoenidae

Género:
Neophocaena
Palmer, 1899

Especie:
N. phoconoides
(G. Cuvier, 1829)
Distribución

Distribución de la marsopa sin aleta
Distribución de la marsopa sin aleta
[editar datos en Wikidata]

La marsopa sin aleta o marsopa negra (Neophocaena phocaenoides) es una especie de cetáceo odontoceto de la familia Phocoenidae, una de seis especies de marsopa. En las aguas alrededor de Japón, se la conoce como sunameri. Una población que habita en agua dulce, del río Yangtze en China es conocida localmente como cerdo del Yangtze.




Índice





  • 1 Descripción


  • 2 Población y distribución


  • 3 Conservación


  • 4 Referencias


  • 5 Enlaces externos




Descripción


Carece de aleta dorsal. Los adultos son color gris claro uniforme, mientras que las crías son negras hasta los 4 o 6 meses de edad. Los adultos miden más de un metro y medio de longitud y pesan hasta 30-45 kg. Los machos son sexualmente maduros a partir de los 4 años y medio de edad y las hembras desde los 3 años. Se alimentan de una amplia gama de peces, crustáceos —sobre todo camarones— y cefalópodos.



Población y distribución


La marsopa sin aleta vive en las aguas costeras de Asia, especialmente en la India, China, Indonesia y Japón. Existe una población dulceacuícola en el río Yangtze.


Habitan aguas poco profundas (hasta los 50 m), cerca de las orillas, con fondos suaves o arenosos. En casos excepcionales han sido avistados hasta 160 km mar adentro frente a las costas chinas y el mar Amarillo, pero siempre en aguas relativamente someras.



Conservación


No existen suficientes datos para incluirlas en la lista de especies en peligro de extinción de la UICN, excepto en China. Su costumbre de permanecer cerca de las orillas las coloca en gran peligro. Muchas mueren cada año en redes o en líneas de pesca colocados a través de los ríos. Una expedición del año 2006 estimaba que menos de 400 animales sobrevivían en el río Yangtze.[cita requerida]



Referencias



  1. ↑ Wang, J.Y. , Reeves, R. (2017). «Neophocaena phocaenoides». Lista Roja de especies amenazadas de la UICN 2017.3 (en inglés). Consultado el 20 de mayo de 2018. 



Enlaces externos



  • Wikimedia Commons alberga una categoría multimedia sobre Neophocaena phocaenoides.


  • Wikispecies tiene un artículo sobre Neophocaena phocaenoides.


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