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| Registros recuperados: 170 | |
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| Michat,Mariano C.; Archangelsky,Miguel; Bachmann,Axel O.. |
| Generic keys for the identification of larvae of Dytiscidae from Argentina are presented. A total of 27 dytiscid genera are recognized in Argentina, included in 16 tribes and seven subfamilies. Twenty-two of the 27 genera are included in the keys. The remaining fi ve genera could not be included because their larvae are unknown (Bidessonotus Régimbart, Brachyvatus Zimmermann, Hemibidessus Zimmermann, Neobidessus Young) or remain poorly known (Cybister Curtis). The keys are presented in English and Spanish. Morphological as well as chaetotaxic characters were included, and an emphasis was made to include easily seen and identifiable characters. However, due to the small size of many dytiscid larvae, some of the characters mentioned in the keys (especially... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diving-beetles; Dytiscidae; Larvae; Keys; Argentina. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802008000200003 |
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| Jiangfan,Xiu; Tao,Wang; Yu,Wang; Jianwei,Wu; Guo,Guo; Yingchun,Zhang; Xiaoli,Shang. |
| ABSTRACT Housefly, Musca domestica, has a complicated immune system. However, its underlying operating mechanism remains elusive. Candida albicans is a major pathogen affecting humans by causing deep infection fungous disease, but it is non-symbiotic in houseflies. To investigate the C. albicans infection process in housefly, the changes in morphological and histological and expression patterns of antimicrobial peptide were monitored to indicate the insect's response to fungal infection. The results showed that scattered brown spots were comprising melanized encapsulation and encapsulated fungal cells were initially observed at the inner side of larvae's body wall 3 h post-infection (PI). Between 6 and 36 h PI, the whole body of larvae was densely covered... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musca domestica; Larvae; Candida albicans; Infection; Innate immunity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100340 |
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| Silva,Patrícia Alves da; Reynalte-Tataje,David Augusto; Zaniboni-Filho,Evoy. |
| This study aims to determine the importance of different environments of the Ligeiro River (upper Uruguay River, Brazil) in fish reproduction. For this purpose, three environments (sampling sites) were selected: rapids, a pool, and the mouth of the Ligeiro River. Ichthyoplankton, zooplankton, and benthos were sampled six times per month from September, 2006 to March, 2007. Zooplankton and ichthyoplankton samples were collected early in the evening with plankton nets (64 µm and 500 µm, respectively). Benthos samples were also collected early in the evening with a Van Veen dredge. Local abiotic variables (temperature, dissolved oxygen, pH, electrical conductivity, water speed, alkalinity, water hardness, and water transparency) were measured simultaneously... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggs; Growth sites; Ichthyoplankton; Larvae; Spawning sites. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200018 |
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| Silva,Allan Martins da. |
| The results of larval collections of mosquitoes from artificial containers and natural breeding at urban and rural areas carried out at Sertaneja, northern State Paraná, Brazil, from February to April, 1995, are presented. Among the 4534 immature forms collected, belonging to 21 species or species-groups, the species with higher density were Aedes aegypti (Linnaeus, 1762), Aedes albopictus (Skuse, 1894), Culex quinquefasciatus Say, 1823 and Limatus durhami Theobald, 1901. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Culicidae; Larvae; Vectors; Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400005 |
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| Lopes,José; Zequi,João A. C.; Nunes,Valdecir; Oliveira,Osmar de; O. Neto,Bertolino P. de; Rodrigues,Walter. |
| The Igapó lake dam is located in an urban area in Londrina, Paraná, Brazil. A one year study of the Culicidae immature forms was conducted in this ecosystem. From a total of 962 collected larvae following genera were identified: Anopheles (59.36%), Culex (19.65%) Aedeomyia (19.23%) Aedes (1.50%), and Uranotaenia (0.10%). The 10 most abundant species were Anopheles strodei, Aedeomyia squamipennis, Culex (Melanoconium) spp., Culex mollis, Anopheles oswaldoi, Anopheles evansae, Culex coronator, Culex quinquefasciatus, Anopheles argyritarsis and Aedes terrens respectively. An. strodei prevailed with greater averages during July and September, showing a significant negative lineal correlation in relation to the rainfall. Ad. squamipennis showed a positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Immature Culicidae; Lake; Larvae. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600010 |
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| Ben Kheder, Rym; Moal, Jeanne; Robert, Rene. |
| The effect of four temperatures, ranging between 17 degrees C and 32 degrees C, was studied on development and lipid reserve management of Crassostrea gigas larvae. No effect of temperature was found on larval mortality, as high survival (>90%) was recorded before competence at all temperatures studied. Temperature did, nonetheless, have a strong effect on growth and settlement success. At low temperature (17 degrees C), larvae competent to metamorphose were only observed from day 23 and only a low percentage finally achieved metamorphosis (12%). The opposite was seen at temperatures >= 27 degrees C: larval competence appeared at day 18 and led to high rates of metamorphosis (60-90%). This difference at settlement seemed to be linked to larval... |
| Tipo: Text |
Palavras-chave: Crassostrea gigas; Larvae; Growth; Metamorphosis; Temperature; Lipids; Physiological indices. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00019/13046/10146.pdf |
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| Mullineaux, Lauren; Speer, Kevin; Thurnherr, Andreas; Maltrud, Matthew; Vangriesheim, Annick. |
| Introduction : Dispersal processes play an important role in the structure and dynamics of many terrestrial and marine communities, and they are especially critical in deep-sea hydrothermal vent ecosystems. These systems are patchy and transient, and most of the species inhabiting them cannot survive elsewhere, so successful dispersal (usually via a larval stage) is essential for maintaining viable populations and species ranges. To understand the mechanisms of larval dispersal, we need to know larval life spans and the transport dynamics of deep-water flows near vent habitats. When these values are measured for a species in a given region, a maximum dispersal distance can be calculated and compared to the geographic spacing between vent fields in that... |
| Tipo: Text |
Palavras-chave: Numerical models; Dipersal potential; Larvae; Flow regime; Hydrothermal vent; Deep sea ecosystems. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-898.pdf |
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| Robert, Rene; Vignier, Julien; Petton, Bruno. |
| Under controlled conditions of food density and temperature, larval performances (ingestion, growth, survival and settlement success) of the flat oyster, Ostrea edulis, were investigated using a flow-through rearing system. In the first experiment, oyster larvae were reared at five different phytoplankton densities (70, 500, 1500, 2500 and 3500 μm3 μL−1: ≈1, 8, 25, 42 and 58 cells μL−1 equivalent TCg), and in the second, larvae were grown at four different temperatures (15, 20, 25 and 30°C). Overall, larvae survived a wide range of food density and temperature, with high survival recorded at the end of the experiments. Microalgae concentration and temperature both impacted significantly larval development and settlement success. A mixed diet of Chaetoceros... |
| Tipo: Text |
Palavras-chave: Ostrea edulis; Larvae; Temperature; Feeding regime; Flow-through; DEB parameters. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00377/48817/49295.pdf |
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| Da Costa, F.; Petton, Bruno; Mingant, Christian; Bougaran, Gael; Rouxel, Catherine; Quere, Claudie; Wikfors, G. H.; Soudant, P.; Robert, Rene. |
| Effects of a remarkably high overall lipid Tisochrysis lutea strain (T+) upon gross biochemical composition, fatty acid (FA), sterol and lipid class composition of Crassostrea gigas larvae were evaluated and compared with a normal strain of Tisochrysis lutea (T) and the diatom Chaetoceros neogracile (Cg). In a first experiment, the influence of different single diets (T, T+ and Cg) and a bispecific diet (TCg) was studied, whereas, effects of monospecific diets (T and T+) and bispecific diets (TCg and T+Cg) were evaluated in a second experiment. The strain T+ was very rich in triglycerides (TAG: 93–95% of total neutral lipids), saturated FA (45%), monounsaturated FA (31–33%) and total fatty acids (4.0–4.7 pg cell−1). Larval oyster survival and growth rate... |
| Tipo: Text |
Palavras-chave: Larvae; Lipids; Oyster; Tisochrysis lutea. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00251/36258/36063.pdf |
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| Rico Villa, Benjamin; Le Coz, Jean-rene; Mingant, Christian; Robert, Rene. |
| Microalgae commonly used as feed for bivalves, Pavlova lutheri (P), Isochrisis affinis galbana (T) and Chaetoceros calcitrans forma pumilum (Cp), were fed to Pacific oyster Crassostrea gigas to assess their nutritional value for larval development and metamorphosis during two experiments. Monospecific, bispecific and trispecific diets were firstly evaluated during 3 weeks from D larvae to young postlarvae. Then bispecific diets, based on different T and Cp proportions, were assessed during a similar period. Concurrently, ingestion was studied through the whole larval and postlarval development for each diet and/or diet mixture. Because lipids are assumed to be a key nutrient for bivalves, biochemical analysis was undertaken on the second set of trials... |
| Tipo: Text |
Palavras-chave: Lipids; Grazing; Metamorphosis; Growth; Larvae; Crassostrea gigas. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1707.pdf |
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| Vanhaecke, P.; Sorgeloos, P.. |
| For characterization of strains of the brine shrimp <i>Artemia</i> of different geographical origin, a standard culture test has been developed in order to compare statistically growth and survival of larvae of different strains. 25 geographical strains have been studied so far -including, for 3 strains, analyses of cysts harvested at different times. Important differences in rates of growth and survival were observed between strains but not among batches of the same strain. Best performances were noted for strains from Bahia Salinas (Puerto Rico), Buenos Aires (Argentina), Chaplin Lake (Canada), Great Salt Lake (Utah, USA), Galera Zamba and Manaure (Colombia). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture; Growth; Larvae; Survival; Artemia. |
| Ano: 1980 |
URL: http://www.vliz.be/imisdocs/publications/261892.pdf |
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| Nazari,Rajab Mohammad; Ghomi,Mohammad Reza; Aquiloni,Laura. |
| This study was aimed to observe the correlations among egg, larvae and maternal characteristics of Persian sturgeon. A total of 41 females were used and the variables including fertilization rate, incubation survival rate, larvae survival rate during yolk sac absorption (before feeding), and larvae survival rate after first feeding were determined. As a result, fertilization rate was positively correlated with three variables: incubation survival, larvae survival during yolk sac absorption, and GSI (gonadosomatic index). Also, maternal size (age, weight, total length) did not show a significant relation (P > 0.05) with incubation survival, larvae survival during yolk sac absorption and larvae survival at first feeding stage. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg; Interrelationship; Larvae; Maternal characteristics; Persian sturgeon. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500012 |
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| Gallego, A; North, E; Petitgas, Pierre. |
| Modelling physical-biological interactions in the early life of fish is becoming an integral part of theoretical and applied marine ecology. A workshop on 'Advancements in modelling physical-biological interactions in fish early-life history' (WKAMF) was held in April 2006 to review recent developments and identify future research directions. Here we provide an overview of the information presented at WKAMF (some of which is published in this Theme Section), discussions that took place at the workshop, and the authors' perspectives as workshop co-Chairs. The major themes identified at the workshop were the need for enhanced model validation and sensitivity methods and improved understanding of physical and biological processes. Using the appropriate level... |
| Tipo: Text |
Palavras-chave: Workshop; Individual based methods; Larvae; Eggs; Fish; Biophysical modelling. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-4311.pdf |
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| Spies,Marcia Regina; Froehlich,Claudio Gilberto. |
| Due to the incipient state of knowledge of the caddisflies of Brazil, faunistic inventories are extremely important. An inventory of the Trichoptera fauna of Campos do Jordão State Park (CJSP), São Paulo State, based on adults and larvae, is presented here, as well as comments on its taxonomic composition and the implications this poses for the value of conserving the Araucaria Forest. The samples were taken between August 2005 and February 2007. Larvae were collected with a Surber sampler in several kinds of mesohabitats, in 1st to 4th order streams throughout CJSP. Adults were sampled with light and Malaise traps, and also entomological nets. In all, 40 genera of Trichoptera belonging to 15 families were recorded. The CJSP fauna include 60% of the genera... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Larvae; Adults; Araucaria Forest; Gondwanan relict; Serra da Mantiqueira. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000400021 |
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| Nicolas, Jean-louis; Ansquer, Dominique; Cochard, Jean-claude. |
| A bacterial strain belonging to the genus Vibrio was involved in a recurrent outbreak of disease in Manila clam Tapes philippinarum larvae at a commercial hatchery, This vibrio, named VTP for convenience, was not related to the known pathogenic vibrios and possessed unusual characteristics, Only Manila clam larvae and postlarvae were affected by the disease, Oyster and scallop larvae were not affected by vrp, Survival of vrp was found to be of short duration in seawater but even a very small number of cells (1 cell per 5 ml) could initiate the disease, VTP did not grow on thiosulfate-citratebile-sucrose agar and was resistant to chloramphenicol. An epidemiological study utilizing bioassays revealed the presence of VTP in adult bivalves and in the... |
| Tipo: Text |
Palavras-chave: Bacterial diseases; Clam culture; Larvae; Pathogenic bacteria; Tapes philippinarum; Vibrio. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00037/14872/12198.pdf |
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| Registros recuperados: 170 | |
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