Harttia

Taxobox
name = "Harttia"
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Siluriformes
familia = Loricariidae
subfamilia = Loricariinae
tribus = Hartiini
genus = "Harttia"
genus_authority = Steindachner, 1877
subdivision_ranks = Species
subdivision = "H. carvalhoi"
"H. depressa"
"H. dissidens"
"H. duriventris"
"H. gravelloi"
"H. gracilis"
"H. guianensis"
"H. kronei"
"H. leiopleura"
"H. longipinna"
"H. loricariformis"
"H. merevari"
"H. novalimensis"
"H. punctata"
"H. rhombocephala"
"H. surinamensis"
"H. torrenticola"
"H. trombetensis"
"H. uatumensis"
synonyms =
*"Quiritixys"
Isbrücker, in Isbrücker et al., 2001

"Harttia" is a genus of catfishes (order Siluriformes) of the family Loricariidae.

Taxonomy

As of 1997, "Harttia" was considered a monophyletic taxon. However, "Harttia" is in need of revision. For example, the synonymy of "Cteniloricaria" with "Harttia" is questionable because it rests solely on the characteristics of "Harttia fowleri" without considering the type species of "Cteniloricaria".

Distribution and habitat

Distribution of "Harttia" species primarily includes rivers draining the Guyana Shield, coastal rivers in northeastern Brazil, and the Amazon River basin. The greatest species diversity of "Harttia", occurs in the Pre-Cambrian Brazilian Shield region.cite journal|journal=Copeia|year=2001|issue=1|pages=136–142|title=New Species of "Harttia" (Loricariidae, Loricariinae) from the Rio São Francisco Basin|first=Francisco|last=Langeani|coauthors=Oyakawa, Osvaldo T.; Montoya-Burgos, Juan I.|format=PDF|doi=10.1643/0045-8511(2001)001 [0136:NSOHLL] 2.0.CO;2|volume=2001|doilabel=10.1643/0045-8511(2001)001[0136:NSOHLL]2.0.CO;2] Only "H. platystoma" and "H. merevari" are known from Venezuela.cite journal|url=http://www.ufrgs.br/ni/vol3num4%5CNI_v3n4p519-524lowr.pdf|title="Harttia merevari", a new species of catfish (Siluriformes: Loricariidae) from Venezuela|first=Francisco|last=Provenzano R.|coauthors=Machado-Allison, Antonio; Chernoff, Barry; Willink, Phil; Petry, Paulo|journal=Neotropical Ichthyology|volume=3|issue=4|pages=519–524|year=2005|format=PDF|doi=10.1590/S1679-62252005000400009] These rheophilic fishes are found in the upper courses of rivers over rocky and sandy bottoms. "Harttia" species are thought to be able to exploit areas with the strongest current, because of its extremely depressed body and long caudal peduncle, comparing to other species.cite journal|url=http://www.mapress.com/zootaxa/2007f/zt01462p040.pdf|title=The genera of the Neotropical armored catfish subfamily Loricariinae (Siluriformes: Loricariidae): a practical key and synopsis|first=Raphael|last=Covain|coauthors=Fisch-Muller, Sonia|journal=Zootaxa|volume=1462|pages=1–40|year=2007|format=PDF]

Description

Sexual dimorphism includes hypertrophied odontodes on the pectoral fin spines and along the margins of the snout in mature males.

"Harttia" exhibits considerable karyotypic diversity with chromosome numbers between 2n = 52 and 2n = 58 in the four species characterized.

Ecology

Representatives of this genus seem to be open brooders.

External links

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References