Pogonopoma

Taxobox
name = "Pogonopoma"
status =


image_width = 250px
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Siluriformes
familia = Loricariidae
subfamilia = Hypostominae
tribus = Rhinelepini
genus = "Pogonopoma"
genus_authority = Regan, 1904
subdivision_ranks = Binomial name
subdivision =
"Pogonopoma obscurum"
Quevedo & Reis, 2002
"Pogonopoma parahybae"
(Steindachner, 1877)
"Pogonopoma wertheimeri"
(Steindachner, 1867)


synonyms = "Pogonopomoides"
Gosline, 1947

"Pogonopoma" is a genus of South American catfish (order Siluriformes) of the family Loricariidae. It includes three species, "P. obscurum", "P. parahybae", and "P. wertheimeri".cite journal|url=http://silurus.acnatsci.org/ACSI/library/biblios/2007_Ferraris_Catfish_Checklist.pdf|title=Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types|first=Carl J., Jr.|last=Ferraris|journal=Zootaxa|volume=1418|pages=1–628|year=2007|format=PDF]

Taxonomy

"Pogonopoma" is one of three genera currently valid in the tribe Rhinelepini. "Pogonopomoides", previously a valid genus, was placed in synonymy with "Pogonopoma".cite journal|url=http://www.bioone.org/archive/0045-8511/2002/2/pdf/i0045-8511-2002-2-402.pdf|title="Pogonopoma obscurum": A New Species of Loricariid Catfish (Siluriformes: Loricariidae) from Southern Brazil, with Comments on the Genus "Pogonopoma"|first=Rodrigo|last=Quevedo|coauthors=Reis, Roberto E.|journal=Copeia|year=2002|issue=2|pages=402–410|format=PDF|doi=10.1643/0045-8511(2002)002 [0402:POANSO] 2.0.CO;2|volume=2002|doilabel=10.1643/0045-8511(2002)002[0402:POANSO]2.0.CO;2] This genus and "Rhinelepis" have a sister group relationship.

"Pogonopoma" contains three species: "P. wertheimeri" (type species), "P. parahybae" (previously "Pogonopomoides"), and "P. obscurum" (described in 2002).

Distribution and habitat

"P. wertheimeri" originates from the Mucuri River, São Mateus River, and Doce River. This species is usually found in stretches of river with mid to strong water current and bottom formed by rocks or sand. However, they are also found in the Juparanã lagoon, close to the mouth of the Doce river, which is a lentic habitat.

"P. parahybae" is endemic to the Paraíba do Sul river basin, where it occurs in areas of mid to strong water current usually associated with rocky substrate.

"P obscurum" is endemic to the upper reaches of the Uruguay River, in the states of Rio Grande do Sul and Santa Catarina, southern Brazil. This species is fairly common and inhabits stretches of the main river and its tributaries, with relatively rapid water currents over bottoms usually formed by rocks and boulders.

Appearance and anatomy

As loricariids, "Pogonopoma" species all exhibit a suckermouth and an at least slightly flattened ventral surface. However, unlike many loricariids, they have circular pupils, which differs from most members of the family that have an omega iris. "Pogonopoma" species are heavily armored except on their abdomen (the belly in the case of loricariids), which is relatively unplated.

"P. wertheimeri" reaches a length of about 22 centimetres (8.7 in) SL.FishBase species|genus=Pogonopoma|species=wertheimeri|year=2007|month=May] It is a cylindrically shaped loricariid. The cheek is covered in long, thin, non-evertible odontodes that form a dense patch.cite journal|title=Phylogenetic Relationships of the Suckermouth Armored Catfishes of the Rhinelepis Group (Loricariidae: Hypostominae)|first=Jonathan W.|last=Armbruster|journal=Copeia|year=1998|issue=3|pages=620–636|doi=10.2307/1447792|volume=1998]

"P. parahybae" reaches a length of about 26 cm (10 in) SL.FishBase species|genus=Pogonopoma|species=parahybae|year=2007|month=May] This fish appears to be more of an intermediate between "P. wertheimeri" and "Rhinelepis". It is fairly flattened, and also has longer pectoral and pelvic fins compared to other species of the tribe Rhinelepini. The gill openings are not as large as those in "Rhinelepis". Also, this species lacks long cheek odontodes and the adipose fin.

"P. obscurum" reaches a length of about 25 cm SL (10 in) SL.FishBase species|genus=Pogonopoma|species=obscurum|year=2007|month=May] Unlike "P. wertheimeri", it simultaneously lacks an adipose fin and cheek odontodes. It's dorsal fin base is also longer than of other members of this genus.

External links

*cite web|url=http://www.auburn.edu/academic/science_math/res_area/loricariid/fish_key/Pogwerth/pogwerth.html|title="Pogonopoma" Regan 1904|last=Armbruster|first=Jonathan W. (contains excerpts from cited papers)

References