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| Manetta, Gislaine Iachstel; UEM; Benedito, Evanilde; UEM, Maringá; Ducatti, Carlos; UNESP. |
| The present study investigates the δ13C and δ15N isotopic composition in frozen samples (control), samples in alcohol and in formaldehyde of Plagioscion squamosissimus and Hypophthalmus edentates. From each individual we extracted a strip of muscle from the region above the lateral line, in the dorsal fin base, that was divided into three equal parts, each one was submitted to one type of treatment: freeze – control group (-15oC), conservation in alcohol 70% and fixation in formaldehyde 4%. Samples were kept under those treatments for 30 days, washed and submerged in distilled water for 4 hours. Afterwards, they were dried up in air oven at 60oC for 48 hours and macerated until the obtaining of a fine powder. A significant difference... |
| Tipo: Composição isotópica |
Palavras-chave: Stable isotope; Preservative; Fishes; Plagioscion squamosissimus; Hypophthalmus edentatus 2.05.00.00-9 Ecologia stable isotope; Preservative; Fishes; Plagioscion squamosissimus; Hypophthalmus edentatus. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7045 |
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| Monteiro, Vanessa; UEM; Benedito, Evanilde; UEM; Domingues, Wladimir Marques; UEM. |
| Com o objetivo de investigar diferenças no conteúdo de energia durante o ciclo reprodutivo, foram selecionados 54 exemplares de Brycon hilarii (k-estrategista) e 82 de Hypophthalmus edentatus (r-estrategista) em amostragens realizadas mensalmente, entre outubro de 2000 e março de 2004, no reservatório de Manso, Estado do Mato Grosso do Norte e em sua área de influência. Determinou-se, para cada indivíduo, o conteúdo calórico, em kcal g-1 de peso seco, com auxílio da bomba calorimétrica (Parr 1261) e, realizaram-se comparações entre os valores calóricos obtidos, o fator de condição (K) e a relação gonadossomática. Observou-se que, em geral, os valores médios de K e do conteúdo calórico foram superiores nos machos das duas espécies analisadas, embora... |
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Palavras-chave: 2.05.00.00-9 Ecologia Brycon hilarii; Hypophthalmus edentatus; Energia; Reprodução; Reservatório de Manso. |
| Ano: 2007 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/521 |
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| Oliveira,Edna Regina Netto de; Agostinho,Angelo Antonio; Matsushita,Makoto. |
| This study analyzed the chemical composition of the dorsal muscle tissue of Hypophthalmus edentatus, in particular, fatty acids of the lipidic fraction, and its relationship with the biological variables and the capture period. The average values for moisture, ash, protein and total lipids were 63.15, 1.11, 14.27 and 17.24%, respectively. In the lipidic fraction, 35 fatty acids were identified, the most abundant being: 16:0, 18:1omega9, 18:0, 16:1omega7, 18:3omega3, DHA and EPA. The totals of respectively saturated, monounsaturated and polyunsaturated fatty acids were 41.15, 35.30 and 23.88%. The PUFA/SFA ratio was equal to 0.68 and the omega3/ omega6 ratio equal to 1.98. The PCA demonstrated that the long chain PUFAs contributed positively to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freshwater fish; Fatty acids; Lipid contents; Proximate composition; Hypophthalmus edentatus. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100015 |
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