Data/hora: 12/06/2024 14:46:59

Provedor de dados: | 83
País: | Brazil
Título: | Systematics of the neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)
Autores: | Menezes,Naércio A.; Weitzman,Stanley H.
Data: | 2009-09-01
Ano: | 2009
Palavras-chave: | South America; Lophiobrycon; Glandulocauda; Mimagoniates; Taxonomy; Biogeography.
Resumo: | The systematics of the Glandulocaudinae is reviewed in detail and justification for the recognition of the group as a subfamily is discussed. The subfamily Glandulocaudinae consists of three genera: Lophiobrycon with one species plesiomorphic in some anatomical features but some others exclusively derived relative to the species in the other genera; Glandulocauda with two species intermediate in phylogenetic derivation; and Mimagoniates with seven species (one new), all more phylogenetically derived concerning their pheromone producing caudal-fin organs and with other anatomical characters presumably more derived than in the species of the other genera. Glandulocauda melanogenys Eigenmann, 1911, is considered a junior synonym of Hyphessobrycon melanopleurus Ellis, 1911. A replacement name, Glandulocauda caerulea Menezes &amp;amp; Weitzman, is proposed for G. melanopleura Eigenmann, 1911. Gland cells found in the caudal-fin organs of all species are histologically indistinguishable from club cells and probably secrete a pheromone during courtship. The club cells are associated with somewhat modified to highly derived caudal scales forming a pheromone pumping organ in the more derived genera and species. This subfamily is distributed in freshwaters of eastern and southern Brazil, Paraguay, and northeastern Uruguay.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300002
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252009000300002
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.7 n.3 2009
Fonte: | info:eu-repo/semantics/openAccess