Data/hora: 06/06/2024 03:17:49

Provedor de dados: | 104
País: | Brazil
Título: | Ultrastructure (SEM) of the gills of Prochilodus Scrofa Steindachner (Pisces, Teleostei)
Autores: | Eiras-Stofella,Daura Regina; Charvet-Almeida,Patricia.
Data: | 1998-01-01
Ano: | 1998
Palavras-chave: | Gill morphology; Scanning; Freshwater fish; Prochilodus scrofa.
Resumo: | Gills arches of the freshwater fish Prochilodus scrofa Steindachner, 1881 (Lt= 8.0-12.4cm) were removed to be analyzed in a scanning electron microscope. The morphology of the superficial structures of the gill filaments and pharyngeal region of the gills arches was discussed and related to their functional aspects. A great quantity of mucous secretory cells and of microridges, along with the pavement cell surface of the primary lamellae and branchial pharyngeal region, indicate the existence of a protection strategy of the respiratory lamellae. The chloride cells are abundant, specially on the distal portion of the primary lamellae, and bring out the osmo regulatory capacity of this species. This fish seems not to be a filtering one according to: its short and simple gill rakers; presence of several taste buds turned towards the mouth opening; evidence of spines on the external side of the arches and an abundant secretion of mucous in the pharyngeal region. This species probably selects the food to be swallowed through its chemical receptors and retains it with the help of spines and mucous secretion this way protecting the gills filaments against the rubbing of particles over them.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200001
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S0101-81751998000200001
Formato: | text/html
Fonte: | Revista Brasileira de Zoologia  v.15 n.2 1998
Fonte: | info:eu-repo/semantics/openAccess