• Source: Harttia

Harttia is a genus of armored catfishes native to South America.




Etymology


The genus name comes from Charles Frederick Hartt (1840–1878), a geologist, paleontologist and naturalist, who collected the many specimens during the Thayer Expedition to Brazil in the years 1865–1866.




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 was questionable because it rested solely on the characteristics of Harttia fowleri without considering the type species of Cteniloricaria.




Species


There are currently 26 recognized species in this genus:

Harttia absaberi Oyakawa, Fichberg & Langeani, 2013
Harttia canastra Caldas, Cherobim & Langeani, 2022
Harttia carvalhoi P. Miranda-Ribeiro, 1939
Harttia depressa Rapp Py-Daniel & E. C. de Oliveira, 2001
Harttia dissidens Rapp Py-Daniel & E. C. de Oliveira, 2001
Harttia duriventris Rapp Py-Daniel & E. C. de Oliveira, 2001
Harttia fluminensis Covain & Fisch-Muller, 2012
Harttia fowleri (Pellegrin, 1908)
Harttia garavelloi Oyakawa, 1993
Harttia gracilis Oyakawa, 1993
Harttia guianensis Rapp Py-Daniel & E. C. de Oliveira, 2001
Harttia intermontana J. Oliveira & Oyakawa, 2019
Harttia kronei A. Miranda-Ribeiro, 1908
Harttia leiopleura Oyakawa, 1993
Harttia longipinna Langeani, Oyakawa & Montoya-Burgos, 2001
Harttia loricariformis Steindachner, 1877
Harttia merevari Provenzano, Machado-Allison, Chernoff, Willink & Petry, 2005
Harttia novalimensis Oyakawa, 1993
Harttia panara Oyakawa, Fichberg & Rapp Py-Daniel, 2018
Harttia punctata Rapp Py-Daniel & E. C. de Oliveira, 2001
Harttia rhombocephala P. Miranda-Ribeiro, 1939
Harttia rondoni Oyakawa, Fichberg & Rapp Py-Daniel, 2018
Harttia surinamensis Boeseman, 1971
Harttia torrenticola Oyakawa, 1993
Harttia trombetensis Rapp Py-Daniel & E. C. de Oliveira, 2001
Harttia tuna Covain & Fisch-Muller, 2012
Harttia uatumensis Rapp Py-Daniel & E. C. de Oliveira, 2001
Harttia villasboas Oyakawa, Fichberg & Rapp Py-Daniel, 2018




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. Only H. platystoma and H. merevari are known from Venezuela. 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.




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.




References






External links


Covain, Raphaël; Le Bail, Pierre-Yves; Fisch-Muller, Sonia (2006). "Les espèces du genre Harttia (Siluriformes: Loricariidae) en Guyane française: morphologie, taxinomie et distribution (French)" (PDF). Cybium. 30 (1): 3–18. Archived from the original (PDF) on 2011-07-18.

Kata Kunci Pencarian:

• Harttia
• Harttia tuna
• Harttia carvalhoi
• Harttia canastra
• Harttia garavelloi
• Harttia absaberi
• Harttia rhombocephala
• Harttia merevari
• Harttia fowleri
• Harttia intermontana