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Data · collection · 2009

Redescription of Astyanax goyacensis Eigenmann, 1908 (Ostariophysi: Characiformes: Characidae)

Listed in GBIF

Description

This dataset contains the digitized treatments in Plazi based on the original journal article Garutti, Valdener, Langeani, Francisco (2009): Redescription of Astyanax goyacensis Eigenmann, 1908 (Ostariophysi: Characiformes: Characidae). Neotropical Ichthyology 7 (3): 371-376, DOI: 10.1590/S1679-62252009000300003, URL: scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300003&lng=en&tlng=en Astyanax goyacensis Eigenmann, 1908 is redescribed based on the holotype and 25 topotypes.

The species belongs to the A. bimaculatus species complex, sharing with those species a black, horizontally ovate, humeral spot (the most conspicuous feature of this complex), two diffuse vertical brown bars in the humeral area (the first through humeral spot and the second 2- 3 scales behind), and black medium caudal-fin rays. Furthermore, A. goyacensis possesses a black stripe extending along midlateral body portion, more conspicuous in alcohol preserved specimens.

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These characteristics allow its inclusion in the putative “black lateral stripe” sub-group of A. bimaculatus species complex. From the species of this complex it differs by the black lateral stripe shape, pattern of chromatophores on the flank, coloration of the caudal fin, scales on the lateral line, branched rays on anal fin, eye diameter, and caudal peduncle depth. Comments about the color pattern in Astyanax bimaculatus species complex are added.

Astyanax goyacensis Eigenmann, 1908 é redescrita com base no holótipo e em 25 topótipos. Esta espécie pertence ao complexo A. bimaculatus, com o qual c ompartilha uma mancha umeral negra ovalada horizontalmente (a mais conspícua característica do complexo), duas barras umerais marrons difusas (a primeira passando pela umeral oval e a segunda, 2-3 escamas atrás) e raios caudais medianos negros. Além disso, A. goyacensis possui uma faixa lateral negra estendida ao longo da porção mediana do corpo, mais conspícua nos exemplares conservados em álcool.

Essas características permitem incluí-la no suposto sub-grupo “faixa lateral negra” do complexo bimaculatus. Das espécies desse complexo ela difere pela forma da faixa lateral negra, padrão de cromatóforos no flanco, coloração da nadadeira caudal, escamas na linha lateral, raios ramificados na nadadeira anal, diâmetro do olho e altura do pedúnculo caudal. São adicionados comentários sobre o padrão de coloração nas espécies do complexo A. bimaculatus.

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Life Sciences
Provenance · 1 source records, 8 field assertions
SourceKeyLast seenRaw
GBIF40a5d481-8472-4d28-ae60-505b6f66ce1713 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · gbifconnector:gbif@1.0.0
concepts[field].local:field:life-sciencesmapping · gbifconnector:gbif@1.0.0
created_datesource · gbifconnector:gbif@1.0.0
descriptionsource · gbifconnector:gbif@1.0.0/description
licensesource · gbifconnector:gbif@1.0.0
publication_datesource · gbifconnector:gbif@1.0.0
titlesource · gbifconnector:gbif@1.0.0/title
updated_datesource · gbifconnector:gbif@1.0.0