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| Guimarães,Ana Tereza Bittencourt; Calil,Patrícia. |
| The aim of this work was to evaluate the influence of Trichlorfon on the growth of cultured fishes. Using Oreochromis niloticus as fish model, bioassays were performed in the laboratory and field. Biometry was performed for 16 weeks. The treatment started after the sixth week of biometry, with the application of five weekly doses of 0.25 ppm of Trichlorfon. Growth data were compared by longitudinal analyses. In the laboratory, the treated fishes showed a reduction of growth; however, the statistical significance was only seen in the variable weight. In the field, the growth of treated fish was higher than that of the controls. This suggested that the treatment should be done in tanks with lower relative biomass to maintain the good zootechnic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organophosphate Tilapia; And aquaculture. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200012 |
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| Toscan,Maria Angélica Gonçalves; Temponi,Lívia Godinho; Guimarães,Ana Tereza Bittencourt; Cândido Junior,José Flávio. |
| We documented litter production and seed rain in fragments of semideciduous forest (SDF) in the western part of the state of Paraná, Brazil: a late successional fragment (LF); an early successional fragment (EF); and a reforested late successional fragment (RLF). In each fragment, we established three permanent plots with four litter traps each, corresponding to 12 litter traps per fragment. Botanical material was collected monthly between June 2011 and May 2012. We sorted the material by category: leaves; branches; reproductive structures; and miscellaneous. We analyzed the seed rain using the reproductive structures. Annual production was highest (11,560 kg.ha-1) in the LF, followed by the RLF, with 9330 kg.ha-1, and the EF, with 7838 kg.ha-1. The RLF... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litterfall; Semideciduous forest; Succession; Zoochory. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300012 |
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