Temporal and ontogenetic variations in feeding habits of Hollandichthys multifasciatus (Teleostei: Characidae) in coastal Atlantic rainforest streams, southern Brazil

Feeding habits of the characin Hollandichthys multifasciatus were investigated. Samplings were made between March 2004 and February 2005 in two black water streams of the coastal Atlantic rainforest in southern Brazil. The diet, evaluated by qualitative and quantitative methods, included aquatic and terrestrial insects, decapods, oligochaetes, plants and spiders. Large individuals feed mainly on plants, terrestrial insects, and spiders, whereas small fish feed basically on plants and oligochaetes. The species showed an omnivorous feeding habit, and its diet was composed of autochthonous (mainl... Mehr ...

Verfasser: Vinícius Abilhoa
Hugo Bornatowski
Gislaine Otto
Dokumenttyp: Artikel
Erscheinungsdatum: 2009
Reihe/Periodikum: Neotropical Ichthyology, Vol 7, Iss 3, Pp 415-420 (2009)
Verlag/Hrsg.: Sociedade Brasileira de Ictiologia
Schlagwörter: Characin / Diet / Feeding ecology / Freshwater / Neotropics / Zoology / QL1-991
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-29072567
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://doaj.org/article/4071ba29d62544c5b9ebb986391c5f94

Feeding habits of the characin Hollandichthys multifasciatus were investigated. Samplings were made between March 2004 and February 2005 in two black water streams of the coastal Atlantic rainforest in southern Brazil. The diet, evaluated by qualitative and quantitative methods, included aquatic and terrestrial insects, decapods, oligochaetes, plants and spiders. Large individuals feed mainly on plants, terrestrial insects, and spiders, whereas small fish feed basically on plants and oligochaetes. The species showed an omnivorous feeding habit, and its diet was composed of autochthonous (mainly oligochaetes) and allochthonous (plants and terrestrial insects) material. Neste estudo foram investigados os hábitos alimentares do caracídeo Hollandichthys multifasciatus. Amostras foram obtidas entre março de 2004 e fevereiro de 2005, em dois riachos de água escura da Floresta Atlântica Costeira do Sul do Brasil. A dieta, avaliada por métodos quantitativos e qualitativos, inclui insetos aquáticos e terrestres, decápodes, oligoquetos aquáticos, plantas e aranhas. Os maiores indivíduos alimentaram-se principalmente de plantas, insetos terrestres e aranhas, enquanto que os menores indivíduos alimentaram-se basicamente de plantas e oligoquetos aquáticos. A espécie apresentou hábito alimentar onívoro, e sua dieta no riacho estudado foi composta por material autóctone (principalmente oligoquetos aquáticos) e alóctone (plantas e insetos terrestres).