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An Enigmatic New Loricariid (Actinopterygii: Siluriformes) from Relictual Upper Reaches of Chapada Diamantina, Bahia, Brazil


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#1 L-ko

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Publicado el 06 November 2019 - 07:09 PM

Edson H. L. Pereira, Alexandre Clistenes de A. Santos, Mário C. C. de Pinna, and Roberto E. Reis

Parotocinclus adamanteus, new species, is described from a series of specimens collected in the upper portion of the Rio Paraguaçu basin, a coastal river within the Chapada Diamantina domain, a large plateau on the State of Bahia in northeastern Brazil. The description of this new species represents the first record of a member of the Hypoptopomatinae from this relictual area. The new species is diagnosed from other Parotocinclus by having a distinct rostral border forming a fleshy intumescence on the lateral portion of head ornamented with moderately hypertrophied odontodes in adult males. It is also diagnosed from congeners by a remarkable secondary sexualdimorphism in the shape of the pelvic fin, in which the branched rays of males decrease in size, resulting in a pointed posterior fin margin (branched pelvic-fin rays in females have approximately the same size, producing a round posteriorfin margin). In addition, the new species can be further distinguished from other species of Parotocinclus by lacking arostral plate covering the tip of the mesethmoid anteriorly, by lacking abdominal plates between the pectoral girdle and the anus, by having numerous premaxillary teeth (45–61), and by having a short and mesially expanded ventral portion of the cheek canal plate. Recent phylogenetic analysis indicates that Parotocinclus adamanteus, new species, is closely related to P. jequi, P. prata, and P. robustus.

Publicado: Copeia 107, No. 4, S. 597

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#2 L-ko

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Publicado el 06 November 2019 - 07:12 PM

Nuevo en la base de datos:

Parotocinclus adamanteus


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@  Dracko1 : (11 September 2019 - 10:36 PM)

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@  Alberto : (08 September 2019 - 06:06 PM)

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@  Alberto : (08 September 2019 - 06:04 PM)

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@  Alberto : (08 September 2019 - 06:02 PM)

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@  Toniramon : (05 August 2019 - 08:22 PM)

Hooollaaaaaaa!!!!!!

@  Oriol Llv : (15 October 2018 - 09:19 AM)

test1

@  Toniramon : (06 November 2017 - 03:36 PM)

Hola

@  Dracko1 : (24 October 2017 - 12:37 AM)

Prueba

@  MUNDOREPTIL : (23 September 2017 - 06:41 AM) No aun no puedo borrarlo, en el area de enfermedades, se llama ''hongo en guppy'', gracas
@  Toniramon : (21 September 2017 - 09:06 PM) Los usuarios no pueden borrar posts. Solo pueden hacerlo colaboradores y moderadores
@  Oriol Llv : (16 September 2017 - 08:54 PM) Hola, pudiste borrarlo? Si no manda un mp y me dices que post es.
@  MUNDOREPTIL : (13 September 2017 - 12:17 PM) alguien sabe como eliminar un post?
@  MUNDOREPTIL : (13 September 2017 - 12:17 PM) buenaasa
@  Toniramon : (03 July 2017 - 05:20 PM) Pero ya está editada.
@  Toniramon : (03 July 2017 - 05:19 PM) Hola Rui. Los archivos adjuntos salen siempre en miniatura. Las fotos se deben adjuntar desde un servidor, como photobucket para que salgan en su tamaño original.
@  Rui : (03 July 2017 - 01:25 PM) me sale en miniatura el archivo adjunto. A ver si lo podéis poner normal algun moderador.
@  Rui : (03 July 2017 - 01:24 PM) Hola
@  Toniramon : (08 May 2017 - 07:30 PM) Hola