Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil
The natural history of Pygidianops amphioxus de Pinna and Kirovskyi (Neotropical Ichthyology 9:493-504, 2011), a highly specialized sand-dwelling catfish species, was studied based on underwater observations in a small forest stream in the central Amazon. Information on the feeding and reproductive...
| Autor principal: | Carvalho, Marla S. |
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| Outros Autores: | Zuanon, Jansen, Ferreira, Efrem J.G. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Environmental Biology of Fishes
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17650 |
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oai:repositorio:1-17650 |
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oai:repositorio:1-17650 Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil Carvalho, Marla S. Zuanon, Jansen Ferreira, Efrem J.G. Activity Pattern Biological Characteristics Body Size Freshwater Environment Reproductive Biology Sexual Dimorphism Specialization Teleost Tropical Environment Amazonia Brasil Branchiostoma Branchiostoma Lanceolatum Chironomidae Copepoda Harpacticoida Invertebrata Siluriformes Trichomycteridae The natural history of Pygidianops amphioxus de Pinna and Kirovskyi (Neotropical Ichthyology 9:493-504, 2011), a highly specialized sand-dwelling catfish species, was studied based on underwater observations in a small forest stream in the central Amazon. Information on the feeding and reproductive biology was obtained by means of analyses of preserved specimens. These miniature catfishes remained buried in the sand at the bottom of the stream and were never observed swimming in open water. The catfish consumed small benthic invertebrates, particularly Chironomidae larvae and Harpacticoida copepods, which were most likely captured by suction feeding inside the sand banks. Pygidianops amphioxus displays sexual dimorphism in the shape of the urogenital papilla and in the body length, with adult females being relatively longer than males. Sexually mature females were found throughout the year and carried a small number of proportionally very large oocytes. A short duration (24 h) experiment conducted in aquaria revealed that these small catfishes exhibit the predominantly nocturnal habits typical of most Siluriformes. © 2013 Springer Science+Business Media Dordrecht. 2020-06-15T21:48:38Z 2020-06-15T21:48:38Z 2014 Artigo https://repositorio.inpa.gov.br/handle/1/17650 10.1007/s10641-013-0123-9 en Volume 97, Número 1, Pags. 59-68 Restrito Environmental Biology of Fishes |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Activity Pattern Biological Characteristics Body Size Freshwater Environment Reproductive Biology Sexual Dimorphism Specialization Teleost Tropical Environment Amazonia Brasil Branchiostoma Branchiostoma Lanceolatum Chironomidae Copepoda Harpacticoida Invertebrata Siluriformes Trichomycteridae |
| spellingShingle |
Activity Pattern Biological Characteristics Body Size Freshwater Environment Reproductive Biology Sexual Dimorphism Specialization Teleost Tropical Environment Amazonia Brasil Branchiostoma Branchiostoma Lanceolatum Chironomidae Copepoda Harpacticoida Invertebrata Siluriformes Trichomycteridae Carvalho, Marla S. Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil |
| topic_facet |
Activity Pattern Biological Characteristics Body Size Freshwater Environment Reproductive Biology Sexual Dimorphism Specialization Teleost Tropical Environment Amazonia Brasil Branchiostoma Branchiostoma Lanceolatum Chironomidae Copepoda Harpacticoida Invertebrata Siluriformes Trichomycteridae |
| description |
The natural history of Pygidianops amphioxus de Pinna and Kirovskyi (Neotropical Ichthyology 9:493-504, 2011), a highly specialized sand-dwelling catfish species, was studied based on underwater observations in a small forest stream in the central Amazon. Information on the feeding and reproductive biology was obtained by means of analyses of preserved specimens. These miniature catfishes remained buried in the sand at the bottom of the stream and were never observed swimming in open water. The catfish consumed small benthic invertebrates, particularly Chironomidae larvae and Harpacticoida copepods, which were most likely captured by suction feeding inside the sand banks. Pygidianops amphioxus displays sexual dimorphism in the shape of the urogenital papilla and in the body length, with adult females being relatively longer than males. Sexually mature females were found throughout the year and carried a small number of proportionally very large oocytes. A short duration (24 h) experiment conducted in aquaria revealed that these small catfishes exhibit the predominantly nocturnal habits typical of most Siluriformes. © 2013 Springer Science+Business Media Dordrecht. |
| format |
Artigo |
| author |
Carvalho, Marla S. |
| author2 |
Zuanon, Jansen Ferreira, Efrem J.G. |
| author2Str |
Zuanon, Jansen Ferreira, Efrem J.G. |
| title |
Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil |
| title_short |
Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil |
| title_full |
Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil |
| title_fullStr |
Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil |
| title_full_unstemmed |
Diving in the sand: The natural history of Pygidianops amphioxus (Siluriformes: Trichomycteridae), a miniature catfish of Central Amazonian streams in Brazil |
| title_sort |
diving in the sand: the natural history of pygidianops amphioxus (siluriformes: trichomycteridae), a miniature catfish of central amazonian streams in brazil |
| publisher |
Environmental Biology of Fishes |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17650 |
| _version_ |
1787144549570707456 |
| score |
11.755432 |