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Effect of temperature on growth of the threatened annual fish Austrolebias nigrofasciatus Costa & Cheffe 2001 49
Volcan,Matheus Vieira; Fonseca,Alinca Peres da; Figueiredo,Mário Roberto Chim; Sampaio,Luís André; Robaldo,Ricardo Berteaux.
This study evaluated the effect of temperature on growth of Austrolebias nigrofasciatus, an endemic and threatened annual killifish species of the Patos-Mirim lagoon system in Southern Brazil. In order to verify the effect of temperature on initial growth of A. nigrofasciatus, eggs stored in the laboratory were hatched and juveniles reared for eight weeks at 16 and 22 ºC. The standard length of newly hatched fishes was 4.67 ± 0.25 mm and after eight weeks they reached 23.68 ± 3.73 and 22.68 ± 5.36 mm, respectively at 16 and 22 ºC. However, initial growth of fish reared at 22 ºC was faster and they reached sexual dimorphism at an earlier age compared to those reared at 16 ºC. Final length of females reared at 22 ºC was 23.00 ± 2.83 mm, they were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Annual fish; Laboratory conditions; Cyprinodontiformes; Rivulidae.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400007
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Some observations on biology and feeding behavior in two southern California pycnogonids 16
Bain, Bonnie.
During the years 1980 to 1982, two common southern California pycnogonids, Anoplodactylus californicus Hall, 1912 and Ammothea hilgendorfi (Böhm, 1879) were routinely collected and kept in aquaria. Observations were made both in the field and in the laboratory on feeding behavior and other aspects of the behavior and biology of the two species. It was concluded that, of the two species, Anoplodactylus californicus would be a good candidate to raise in the laboratory for further studies on the biology of these organisms.
Tipo: Article / Letter to the editor Palavras-chave: Pycnogonida; Feeding behavior; Anoplodactylus; Ammothea; Laboratory conditions.
Ano: 1991 URL: http://www.repository.naturalis.nl/record/504293
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Desove inducido en Eugerres plumieri (Patao) en condiciones de laboratorio 20
Millares, N.; Borrero, M.; González, E..
Este trabajo refleja el resultado de las investigaciones realizadas en la inducción al desove de Eugerres plumieri en el periodo comprendido de junio a noviembre de 1976. Se determinó el rango de dosis efectiva de utilizando la hormona Gonadrotopina Coroniónica Humana (HGC), para obtener experimentalmente el desove, fertilización y desarrollo embrionario. Se efectuaron 4 ciclos experimentales donde fueron tratadas 35 hembras, de las cuales podemos considerar como representativas del experimento a 19 de las mismas. De ellas, 3 respondieron completamente al tratamiento hormonal. Las dosis efectivas para inducir al desove y obtener huevos fértiles y larvas son de 3,2 a 3,1 U.I. por g de peso de cuerpo del pez. No se encontraron diferencias entre los índices...
Tipo: Journal Contribution Palavras-chave: Laboratory conditions; Spawning; Tropical fish.
Ano: 1979 URL: http://hdl.handle.net/1834/4872
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