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| Garcia,Maria I.; Murúa,Albérico F.; Díaz-Nieto,Leonardo M.; Acosta,Juan C.; Rios,Claudia de Los; Cano,Florencia A.; Blanco,Graciela M.. |
| ABSTRACT Larvivorous fish have been studied as potential biocontrol agents of mosquito larvae and pupae through their trophic interactions. The use of native fish for mosquito control may have benefits for both aquatic biodiversity and human health. Evaluating the effect of vegetation on the predatory efficacy is fundamental to determine if this species can be used as a biocontrol agent. With the aim of evaluating Jenynsia multidentata (Jenyns, 1842) as a biocontrol agent of Culex pipiens Linnaeus, 1758, we tested its predatory capacity in the presence or absence of aquatic vegetation under laboratory conditions. Two independent experiments were conducted. Larval consumption at a density of 60 larvae (6 larvae/l) was significantly reduced with the vegetation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biocontrol agents; Culex larvae; Larvae density; Consumption rate. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100211 |
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| Farias, Ana; Pereda, Sandra V.; Uriarte, Iker; Doerner, Jessica; Cuzon, Gerard; Rosas, Carlos. |
| The aim of this study was to evaluate the performance of Patagonian octopus fed with moist diets formulated with several local feed ingredients. All formulated diets were based on crab paste (70%) and the experimental feed ingredient (30%). Experiment I assayed salmon meal, prime sardine meal, and wheat gluten, using fresh fish as a control; experiment 2 assayed prime fish meal and macroalgal meal against crab paste alone as a control. The ingestion rate was lower than expected for all diets except those of fresh fish, crab paste alone, and crab paste plus prime sardine meal. No significant differences were found in the observed digestibility of the diets, indicating, in general, low digestibility, even for fresh fish. The highest protease values were... |
| Tipo: Text |
Palavras-chave: Octopus; Emeroctopus megalocyathus; Digestibility; Enzymes; Consumption rate; Nutrition; Moist diets. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00030/14106/11342.pdf |
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| Soletchnik, Patrick; Goulletquer, Philippe; Heral, Maurice; Razet, Daniel; Geairon, Philippe. |
| This ecophysiological study was conducted on the Japanese oyster (Crassostrea gigas) reared in Marennes-Oléron bay (France), in May 1992. Measurements were achieved using natural food conditions on three different days (a, b, c) at different tide levels (coefficient of 49, 57, and 88). Total particulate matter was continuously monitored with a micro-computer and a turbidimeter probe. The "consumption" function was calculated using a new formula allowing for particulate leakage prior to the pre-ingestive particle sorting. This particle leakage represents a passive loss of particles flowing through the branchial filter. Comparisons of the consumption and absorption rates of organic matter and chlorophyll a showed significant differences between seston... |
| Tipo: Text |
Palavras-chave: Crassostrea gigas; Consumption rate; Selection efficiency; Absorption rate; Energetic budget; Organic matter; Chlorophyll alpha; Marennes-Oleron bay. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/1996/publication-3086.pdf |
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