Consulta: creatorFacets:"Geffen, Audrey J."
Registros recuperados: 4
Data/hora: 10/06/2024 18:29:12

Fantastically plastic: fish larvae equipped for a new world
Provedor de dados: 5
Autores: Pittman, Karin; Yufera, Manuel; Pavlidis, Michail; Geffen, Audrey J.; Koven, Willian; Ribeiro, Laura; Zambonino, Jose Luiz; Tandler, Amos.
Teleost fish are more diverse than any other vertebrate group, and yet only a limited number of species are fished and farmed globally. Efforts to expand the quantity and diversity of fish produced are hampered by the extreme diversity of ontogenetic responses of fish, especially during larval development. This review looks at advances in molecular phylogeny, endocrine and nutrient influences and long-term studies of the phenotypes of commercially important fish to put the sources and consequences of this plasticity into context. This nested context of evolutionary forces of the fish-specific genome duplication, epigenetic influences, ontogenetically conserved processes like metamorphosis and cell determination is further presented in relation to how fish...
Tipo: Text
Palavras-chave: Development; Epigenetics; Fish-specific genome duplication; Juveniles; Larvae; Metamorphosis; Plasticity.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00144/25509/23655.pdf

Sperm motility in European hake, Merluccius merluccius, and characterization of its spermatozoa concentration and volume, spermatocrit, osmolality and pH
Provedor de dados: 5
Autores: Groison, Anne-laure; Suquet, Marc; Cosson, Jacky; Mayer, Ian; Severe, Armelle; Bouquet, Jean-marie; Geffen, Audrey J.; Utne-palm, Anne Christine; Kjesbu, Olav Sigurd.
Due to stock declines there is a growing interest in farming of European hake Merluccius merluccius. Thus, knowledge of its sperm biology is of importance not only for purposes of broodstock management, but also for the development of sperm preservation techniques. Hake sperm were collected from mature males caught during the summer-early autumn waters off western Norway and during the winter-early spring in the Bay of Biscay (France). Sperm quality characteristics were assessed after storage at 4 degrees C for 25 +/- 14 h. Average (+/- SD) values for Norwegian and French samples respectively were (i) sperm volume: 3.9 +/- 4.0 and 2.6 +/- 4.0 ml; (ii) spermatozoa concentration: 6.6 +/- 3.2 and 13.9 +/- 5.1 x 10(9) spermatozoa/ml; (iii) spermatocrit: 80.2...
Tipo: Text
Palavras-chave: Cryopreservation; Merluccius merluccius; Osmolality; PH; Sperm motility; Spermatocrit.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00003/11393/8021.pdf

Extensive larval dispersal and restricted movement of juveniles on the nursery grounds of sole in the Southern North Sea
Provedor de dados: 5
Autores: Delerue-ricard, Sophie; Darnaude, Audrey M.; Raeymaekers, Joost A.m.; Dundas, Siv Hjorth; Skadal, Julie; Volckaert, Filip A.m.; Geffen, Audrey J.
Connectivity between spawning and nursery grounds influences the colonization, replenishment and resilience of populations of marine organisms. Connectivity rate, measured as the exchange of individuals between spawning and nursery grounds, is therefore a crucial determinant of stock size. However, connectivity of early-life stages is hard to explore due to sampling limitations and insufficient knowledge on potential larval sources. Here we present new insights into pre- and post-settlement dispersal of the common sole (Solea solea L.) at a spatial scale of 5–500 km in the Southern North Sea. Patterns at a scale of &lt;100 km were considered local, whereas patterns further than 100 km were considered regional. Multi-elemental signatures of the otolith edge...
Tipo: Text
Palavras-chave: Connectivity; Early-life history; North Sea; Otolith elemental composition; Trace elements; Solea solea.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00594/70601/68794.pdf

Gene-associated markers provide tools for tackling illegal fishing and false eco-certification
Provedor de dados: 5
Autores: Nielsen, Einar E.; Cariani, Alessia; Mac Aoidh, Eoin; Maes, Gregory E.; Milano, Ilaria; Ogden, Rob; Taylor, Martin; Hemmer-hansen, Jakob; Babbucci, Massimiliano; Bargelloni, Luca; Bekkevold, Dorte; Diopere, Eveline; Grenfell, Leonie; Helyar, Sarah; Limborg, Morten T.; Martinsohn, Jann T.; Mcewing, Ross; Panitz, Frank; Patarnello, Tomaso; Tinti, Fausto; Van Houdt, Jeroen K. J.; Volckaert, Filip A. M.; Waples, Robin S.; Carvalho, Gary; Albin, Jan Ej; Vieites Baptista, Juan M; Barmintsev, Vladimir; Bautista, Jose M.; Bendixen, Christian; Berge, Jean-pascal; Blohm, Dietmar; Cardazzo, Barbara; Diez, Amalia; Espineira, Montserrat; Geffen, Audrey J.; Gonzalez, Elena; Gonzalez-lavin, Nerea; Guaniero, Ilaria; Jerome, Marc; Kochzius, Marc; Krey, Grigorius; Mouchel, Olivier; Negrisolo, Enrico; Piccinetti, Corrado; Puyet, Antonio; Rastorguev, Sergey; Smith, Jane P; Trentini, Massimo; Verrez-bagnis, Veronique; Volkov, Alexander; Zanzi, Antonella.
Illegal, Unreported and Unregulated fishing has had a major role in the overexploitation of global fish populations. In response, international regulations have been imposed and many fisheries have been 'eco-certified' by consumer organizations, but methods for independent control of catch certificates and eco-labels are urgently needed. Here we show that, by using gene-associated single nucleotide polymorphisms, individual marine fish can be assigned back to population of origin with unprecedented high levels of precision. By applying high differentiation single nucleotide polymorphism assays, in four commercial marine fish, on a pan-European scale, we find 93-100% of individuals could be correctly assigned to origin in policy-driven case studies. We show...
Tipo: Text
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00090/20085/17722.pdf