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| Registros recuperados: 94 | |
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| Joly, Jean-pierre; Bouget, Jean-francois; Hirata, Toshio. |
| L’implantation récente de Rapana venosa, gastéropode prédateur originaire d’Extrême Orient, en plusieurs points du globe (USA, France, Uruguay, Argentine) et son impact sur les populations de bivalves autochtones justifient un certains nombre de recherches engagées par les pays concernés. Le présent rapport compile les dernières informations scientifiques disponibles sur la biologie de R. venosa. Par ailleurs, l’opportunité d’obtenir des pontes en milieu naturel et en captivité en 2001 a permis de faire des observations sur la maturation des larves. Il apparaît que dans les conditions de températures régnant en Baie de Quiberon en été (18 à 22°C), les larves de Rapana venosa sont capables d’éclore. L’impossibilité, dans cette expérimentation, d’amener ces... |
| Tipo: Text |
Palavras-chave: Rapana venosa; Biologie; Larve; Eclosion; Rapana venosa; Biology; Larva; Hatching. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00016/12699/9620.pdf |
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| Cuate-Mozo,Víctor A.; Aragón-García,Agustín; Pérez-Torres,Betzabeth C.; López-Olguín,Jesús F.; Morón,Miguel Á.; Rojas-Martínez,Reyna I.. |
| Resumen El amaranto (Amaranthus hypochondriacus L.) se cultiva en zonas agrícolas de secano en Puebla, México, y entre los factores que ocasionan pérdidas en su producción está el complejo gallina ciega; para su control se aplican cantidades abundantes de insecticidas sin lograr disminuir los daños. En este estudio se evaluó el efecto del manejo agroecológico del complejo gallina ciega asociado a amaranto en una parcela de 32 800 m2, y se diagnosticó la densidad poblacional. El manejo se realizó en una parcela dividida en secciones: en una (tratamiento) de 8000 m2, después del barbecho se colocó una trampa de luz mercurial tipo pantalla; otra de 16 800 m2, como barrera; el testigo fue una parcela de 8000 m2. Después del diagnóstico se recolectaron 280... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phyllophaga ilhuicaminai; Ph. ravida; Gallina ciega; Control físico; Larva. |
| Ano: 2016 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952016000700889 |
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| Robin, Jean; Vincent, Benoit. |
| Recent advances have led to the development of inert diets for first-feeding marine fish larvae. The purpose of the present study was to evaluate fatty acid (FA) incorporation into larva using practical-type and semipurified diets as first food for larvae. Experimental microparticulate diets were fed to gilthead sea bream larvae, right from the mouth opening to day 21 post hatching. Five basal diets were compared, using fish meat or casein as main protein sources, and fish protein concentrate or casein hydrolysates and algae powder (Schizochytrium). Diets contained soybean lecithin to provide polar lipids and this also provided a high linoleic acid (18:2n-6) content. n-3 HUFA (1.5-1.7% DM) were mainly in dietary neutral lipids, with a part in polar lipids... |
| Tipo: Text |
Palavras-chave: Sparus aurata; Inert diet; Fatty acids; Larva; Fish. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-499.pdf |
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| Zequi,João A. C.; Lopes,José. |
| The objectives of this morphometric study of Culex (Culex) saltanensis Dyar, 1928 larvae were to observe the continuous growth of siphon and cephalic capsule length and width in each instar, and to propose a linear equation to differentiate instars according to the size of both structures. Larvae obtained in laboratory at 27 ± 1ºC, photoperiod 14L:12D were studied. Larvae of the forth instar were collected on the field and compared with same instar larvae reared in the laboratory. Egg size and pigmentation pattern, first instar continuous growth, and differentiation of larval stages measurements were studied. Egg pigmentation patterns and the shapes of raft eggs differentiated specimens of C. saltanensis from Culex (Culex) quinquefasciatus Say, 1823 found... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Instar; Larva; Measurement. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000100021 |
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| Santin, Miriam; UEM; Bialetzki, Andréa; UEM - Maringá; Nakatani, Keshiyu; UEM. |
| Aspectos da alimentação de larvas e juvenis de Apareiodon affinis são descritos. As amostragens foram realizadas no Ressaco do Leopoldo, alto rio Paraná, entre fevereiro de 1991 e fevereiro de 1992, utilizando rede de plâncton. Nas larvas em pré-flexão e flexão, a boca é pequena e terminal, passando a inferior no estágio de pós-flexão e nos juvenis. O tubo digestivo é simples e reto nas larvas em pré-flexão e diferenciado naquelas em pós-flexão. A dieta foi constituída principalmente por algas, caracterizando essa espécie como algívora durante todo o seu desenvolvimento. A análise da digestibilidade não evidenciou o horário preferencial de alimentação dos difirentes estágios de desenvolvimento, provavelmente em função do tipo de amostragem utilizada e do... |
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Palavras-chave: 2.01.00.00-0 Biologia Geral Apareiodon affinis; Alimentação; Larva; Juvenil; Peixe; Rio Paraná 2.01.00.00-0 Biologia Geral. |
| Ano: 2004 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1542 |
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| Damen, Peter; Dictus, Wim J.A.G.. |
| The development of the muscular system of the gastropod mollusc Patella has been thoroughly studied. As a result, two larval retractors, the main and accessory larval retractor, had been described in the larva of Patella. These muscles were supposed to be responsible for the retraction of the larval body into the shell. Previously no larval extensors, which would be responsible for the extension of the larval body out of the shell, have been described. Using cell-lineage tracer injection and phalloidin staining of muscles, a newly-discovered muscle is herein identified in the larva of Patella coerulea. A functional model is presented in which two muscles are responsible for the extension of the larva, the newly-discovered muscle together with the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Patella; Gastropoda; Mollusca; Development; Larva; Muscle; Antagonist; Cell-lineage. |
| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/534309 |
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| Registros recuperados: 94 | |
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