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Ritmo de alimentação de juvenis de Loricariichthys anus (Siluriformes, Loricariidae) da Lagoa dos Quadros, RS, Brasil Iheringia, Sér. Zool.
Petry,Ana Cristina; Schulz,Uwe Horst.
The rhythm of movements and feeding activity of juveniles of Loricariichthys anus (Valenciennes, 1840) in the Quadros lake, South Brazil, are investigated. Between October 1997 and August 1998, 236 specimens were captured during six bimonthly 24 hour gillnet surveys. Significantly elevated levels of movement and feeding activity during the day are registered. The patterns of movement and feeding activity displayed no significant difference, suggesting that high movement activity levels can be attributed to feeding activity. The mean of the intestinal quotient was 1,89, indicating omnivorous feeding habits.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Loricariichthys anus; Juvenile; Feeding rhythm; Intestinal quotient.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212000000200006
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Trophic ecology of Loricariichthys melanocheilus Reis & Pereira, 2000 (Siluriformes: Loricariidae) in Ibicuí river, southern Brazil Biological Sciences
Zardo, Éverton Luís; Behr, Everton Rodolfo.
 Aiming to characterize aspects of the trophic ecology of Loricariichthys melanocheilus in the Ibicuí river, bimonthly samples were taken in lotic and lentic ecosystems. Fish were caught and fixed in 10% formalin and dissected for stomach content analysis. Items were identified to the lowest taxonomic level possible. Stomach fullness (SF), repletion index (RI) and intestinal quotient (IQ) were estimated. Diet was assessed by the frequency of occurrence and the volumetric method, combined to obtain a Alimentary index. Feeding activity was analyzed with mean values of SF, RI and vacuity index (VI), which represents the percentage of empty stomachs. These parameters were compared seasonally, spatially, and according to the circadian rhythm. The main items in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciências biológicas; Ecologia feeding activity; Feeding habits; Intestinal quotient; Stomach fullness; Trophic spectrum Ecologia.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/26384
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