Metadata

Trichomycterus itacarambiensis

Trajano and De Pinna 1996

ORDERSUB-ORDERFAMILY
SiluriformesLoricarioideiTrichomycteridae

Synonyms

None.

Country

Brazil

Types

Holotype: MZUSP 42469 47.3m SL. Paratypes: MZUSP 50548 - 50566, 21.0-62.0mm SL.

Distribution

Known only from the type locality: Gruta Olhos d’Agua, Itacarambi, Minas Gerais, Brazil (15o06'05"S, 44o09'30"W).

Habitat

The cave is a resurgence which carries a perennial flowing stream. Water levels vary from dry to wet seasons and it is mostly in the latter that food is transported into the cave. The fish is found throughout the cave. It is isolated within the cave by waterfalls upstream and by canalisation downstream. The fish is a carnivorous generalist and eats predominantly earthworms and arthropods (including beetles, mayflies, Diptera and troglobitic isopods). There is a severe food shortage during the dry season and the fishes live on body tissue during this time and have a correspondingly low condition factor (Trajano 1997a).

Systematics

The relationships of the Trichomycteridae are not currently fully understood but this species appears to be closest to T. paolence and T. proops (Carvalho and De Pinna 1986).

Conservation Status

TLO [NE] [CR B2ab(iii,v):3.1:2011]

Museum Holdings

As above only.

Key References

Chaimowicz, F. Journal Article 1984 Levantamento bioespeleologico de algumas grutas de Minas Gerais
Carvalho, A.M. and de Pinna, M.C.C. Journal Article 1986 Estudo do uma populacao hipogea de Trichomycterus (Ostariophysi, Siluroidei, Trichomycteridae) de Gruta Olhos d'Agua, MG
Chaimowicz, F. Journal Article 1986 Observacoes preliminares sobre o ecosistema da Gruta Olhos d'Agua, Itacarambi, MG
Trajano, E. and Menna-Barreto, L. Journal Article 1996 Free-running locomotor activity rhythms in cave dwelling catfishes, Trichomycterus sp., from Brazil (Teleostei, Siluriformes)
Trajano, E. and de Pinna, M.C.C. Journal Article 1996 A new cave species of Trichomycterus from Eastern Brazil (Siluriformes, Trichomycteridae)
Trajano, E. Journal Article 1996 Ecologia, comportamento e evolucao de peixes subterraneas. Estudo de caso: Trichomycterus sp. de caverna Olhos d'Agua, Itacarambi, MG.
Trajano, E. Journal Article 1996 Biologia da caverna Olhos d'Agua, Itacarambi, MG
Trajano, E. Journal Article 1997 Population ecology of Trichomycterus itacarambiensis, a cave catfish from Eastern Brazil (Siluriformes, Trichomycteridae)
Trajano, E. Journal Article 1997 Threatened fishes of the world: Pimelodella kronei (Ribeiro, 1907) (Pimelodidae)
Trajano, E Journal Article 1997 Food and reproduction of Trichomycterus itacarambiensis, a cave catfish from south-eastern Brazil
Trajano, E., Secutti, S. and Bichuette, M.E. Journal Article 2009 Populatioin decline in a Brazilian cave catfish, Trichomycterus itacarambiensis Trajano and Pinna, 1996 (Siluriformes): reduced flash flood as a probable cause
Colihueque, N., Corrales, O, and Yáñez, M. Journal Article 2017 Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae)