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| Suquet, Marc; Cosson, J.; De La Gandara, F.; Mylonas, C. C.; Papadaki, M.; Lallemant, S.; Fauvel, Christian. |
| P>The present study aimed to establish some basic characteristics of Atlantic bluefin tuna sperm from captive mature males, treated or untreated by gonadotropin releasing hormones agonist (GnRHa). Intratesticular milt was collected from treated and untreated fish (mean weight +/- SD: 122.9 +/- 29.2 kg, n = 21). There was no significant effect of GnRHa treatment on GSI (1.33 +/- 0.70%, n = 21) or on sperm concentration (3.8 +/- 1.3 x 1010 spermatozoa ml-1, n = 21) estimated by optical density at 260 nm. Similarly, the percentage of motile spermatozoa measured at 30 s post activation: activating medium (AM seawater containing 10 mg ml-1 BSA) was not significantly different between control and GnRHa implanted males. On the other hand, a significantly... |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00015/12645/9722.pdf |
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| Deville, Eric; Mascle, A.; Callec, Y.; Huyghe, P.; Lallemant, S.; Lerat, O.; Mathieu, X.; De Carillo, C. Padron; Patriat, Martin; Pichot, Thibaud; Loubrieux, B.; Granjeon, D.. |
| Several marine geophysical data and piston-coring surveys acquired during the last decade allow one to better understand the close dynamic interactions between the sand-rich Orinoco turbidite system and the compressional structures of the Barbados prism. These interactions have been active since Eocene time as illustrated by the study of outcrops onshore Barbados Island. Because of strong morphologic and tectonic control in the east-Caribbean active margin, the present-day Orinoco turbiditic pattern system does not exhibit a classic fan geometry. The sea-floor geometry between the slope of the front of the Barbados prism and the slope of the South-American margin induces the convergence of the turbidite channels toward the abyssal plain, at the front of... |
| Tipo: Text |
Palavras-chave: Turbidite system; Active margin; Orinoco; Barbados. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00252/36373/34913.pdf |
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