SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Reddin, David; De Pontual, Helene; Prouzet, Patrick.

Two techniques of stock discrimination both utilizing scales, i. e. termed as classical technique and shape analysis, are compared for discriminating between North American and European Atlantic salmon (Salmo salar L.) caught off West Greenland. Three scales from each of 60 salmon were analyzed: 30 from North American and 30 from European-origin salmon collected from home rivers in 1982. The best results indicated misclassification and error rates of 0% for shape analysis and 5.0% and ± 1.7%, respectively, for the classical technique. A nested ANOVA indicated that variation was greater between scales of salmon of North American and European origin than from several scales from the same salmon. It was concluded that shape analysis with computer-aided...

Tipo: Text

Palavras-chave: Salmo salar; Scalimétrie; Analyse de forme; Discrimination; Salmo salar; Meristics; Shape analysis; Discrimination.

Ano: 1992

URL: http://archimer.ifremer.fr/doc/00189/30073/28561.pdf

Caracteristiques du stock de saumon atlantique (Salmo salar L.) capture a la ligne sur l'Aulne (riviere de Bretagne nord) durant la periode 1983-1981.

Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency

Prouzet, Patrick.

Study of fish caught by angling on the Aulne River from 1973 to 1981provides information on the characteristics of Atlantic salmon (Salmo salar) populations and on the characteristics of the fishery. A discontinuity was noted in 1973 in the catch evolution that separates two periods: 1955-1972 (630 salmons each year) and 1973-1981 (161 salmons each years).

Tipo: Text

Palavras-chave: Salmo salar; Stock assessment; Angling; Salmon fisheries; Migratory species.

Ano: 1982

URL: http://archimer.ifremer.fr/doc/1982/publication-1840.pdf

Perrier, Charles; Guyomard, Rene; Bagliniere, Jean-luc; Nikolic, Natacha; Evanno, Guillaume.

While the stocking of captive-bred fish has been occurring for decades and has had substantial immediate genetic and evolutionary impacts on wild populations, its long-term consequences have only been weakly investigated. Here, we conducted a spatiotemporal analysis of 1428 Atlantic salmon sampled from 1965 to 2006 in 25 populations throughout France to investigate the influence of stocking on the neutral genetic structure in wild Atlantic salmon (Salmo salar) populations. On the basis of the analysis of 11 microsatellite loci, we found that the overall genetic structure among populations dramatically decreased over the period studied. Admixture rates among populations were highly variable, ranging from a nearly undetectable contribution from donor stocks...

Tipo: Text

Palavras-chave: Conservation; Population genetics; Salmo salar; Stocking; Temporal stability.

Ano: 2013

URL: http://archimer.ifremer.fr/doc/00141/25271/23328.pdf

Characteristics of one sea winter Atlantic salmon stock caught on Elorn river from 1974 to 1984

Prouzet, Patrick; Gaignon, Jean-louis.

From observations gathered on grilse populations sampled during the fishing period (March -mid-June) or after the fishing season, the authors noted: a strong heterogeneity and length, the mean value of which increase from May to December, a sex-ratio not different from 1 male for 1 female, a high relative fecundity superior to those of spring salmon population sampled. The comparison between fish of local and foreign origins did not allow to observe significant differences between the biological characteristics studied (weight, length, sex-ratio and fecundity).

Tipo: Text

Palavras-chave: Salmo salar; Salmonidae; Pisces; Weight; Fecundity; Sex ratio; Length weight relationships; Migratory species.

Ano: 1983

URL: http://archimer.ifremer.fr/doc/1983/publication-1818.pdf

Constitution of aquacultural stocks: Genetic aspects.

Contribution à l'étude de l'adaptation à l'eau de mer chez les Poissons Salmonidés - Détermination de critères de smoltification par mesures de l'activité (Na+K+)-ATPasique des microsomes de la branchie et des hormones thyroïdiennes plasmatiques

Chevassus, B.

Before reaching of production level justifying an elaborated genetic improvement program, the new aquaculture species deserve a minimal strategy to avoid the consequences of uncontrolled genetic phenomena. Three main aspects will be discussed: initial constitution of the broodstock; maintenance of the broodstock; selection of the broodstock.

Tipo: Text

Palavras-chave: Oncorhynchus keta; Salmo salar; Salmo trutta; Salmonidae; Pisces; Marine molluscs; Marine fish; Sex ratio; Females; Males; Eggs; Larvae; Spawning populations; Aquaculture; Population genetics.

Ano: 1989

URL: http://archimer.ifremer.fr/doc/1989/acte-1442.pdf

Desarrollo de la Aleta Caudal del Salmón (Salmo salar)

Boeuf, Gilles.

Les salmonidés peuvent être classés en deux grands groupes : - ( 1) les espèces ou variétés "sédentaires" d'eau douce, non affectées par un comportement migratoire et passant leur vie entière en systèmes dulçaquicoles ; - (2) les especes ou variétés affectées par de profondes modifications physiologiques, la smoltification, les préadaptant à la vie en milieu océanique et se terminant par la migration active vers la mer. Le présent travail a consisté à effectuer des transferts d'eau douce en eau de mer de diverses espèces de ces deux groupes à différentes étapes de leur cycle de développement et à étudier corrélativement les variations consécutives de leur équilibre hydrominéral et leurs performances ultérieures. Les résultats de cette étude ont permis...

Tipo: Text

Palavras-chave: Smoltification; Osmorégulattion; Salmonidés; Na+K+; ATPase; Pression osmotique; T3 triiodo-thyronine; T4 thyroxine; Croissance; Indicateurs physiologiques; Truite arc-en-ciel; Salmo gairdneri; Truite fario; Salmo trutta; Saumon de fontaine; Salvelinus fontinalis; Saumon coho; Oncorhynchus kisutch; Saumon atlantique; Salmo salar.

Ano: 1987

URL: http://archimer.ifremer.fr/doc/00443/55500/57046.pdf

Effect of salting and cold-smoking procedures on Atlantic salmon originating from pre-or post rigor filleted raw material. Based on the measurement of physiochemical characteristics

Rojas,Mariana; Pellón,Mario; del Sol,Mariano.

Las patologías y traumas de la aleta caudal afectan la natación, dificultan la alimentación y la eficiencia de escape de los peces, además aumentan la susceptibilidad a las infecciones bacterianas y fúngicas. Los salmones adultos pueden regenerar rápida y completamente su aleta si esta es amputada. Sin embargo, se han reportado en el sur de Chile, alevines que expresan defectos anatómicos en la aleta caudal asociados a un alto índice de mortalidad donde no ocurre regeneración. Existen múltiples estudios sobre la aleta caudal de peces adultos pero esta descripción no concuerda con la morfología de la fase de alevín. Nuestro objetivo es describir la anatomía e histología de la aleta caudal del salmón de 15 mm, 30 mm y 60 mm para facilitar el diagnóstico de...

Tipo: Journal article

Palavras-chave: Aleta caudal; Lepidotriquias; Alevín; Salmón; Desarrollo; Salmo salar.

Ano: 2015

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200017

Bjornevik, Marit; Cardinal, Mireille; Vallet, Jean-luc; Nicolaisen, Ove; Arnarson, Gudmundur Oern.

Different methods in use for cold smoking of salmon affect product yield and quality. The combinations of filleting time (pre or post), salting methods (dry or injection), salting targets (2.5 or 4%) and smoking temperatures (15 or 25 °C) were studied during 6 weeks of 4 °C cold storage. Salting method had the greatest influence on flesh quality. Injection salting led to 15% higher fillet yield, moderate to strong gaping score, softer texture, and paler fish compared with dry salting. Pre-rigor filleting reduced fillet gaping from a moderate to minor score, but only in dry salted fillets. Smoking at 15 °C reduced yield by 0.5% in injected salted fish, compared with 25 °C. The combination of pre-rigor filleting, dry salting and 15 °C smoking temperature...

Tipo: Text

Palavras-chave: Salmo salar; Flesh quality; Texture; Liquid loss; Fillet yield; Cold storage.

Ano: 2018

URL: https://archimer.ifremer.fr/doc/00423/53475/54382.pdf

Etude de la production de juvéniles de saumon atlantique (Salmo salar) - 1 - Résultats de la saison 1979-1980 Pisciculture du Quinquis

Etude de la production de juvéniles de saumon atlantique (Salmo salar). II - Influence de la densité sur l'alevinage. Campagne 1980-1981 Pisciculture du Quinquis

La pisciculture du Quinquis, sise près de Landivisiau (29), a pour objet la production intensive de smolts de saumon atlantique (Salmo salar) dans le cadre d'un programme d'aménagement et de repeuplement de la rivière Elorn. Depuis sa mise en eau (1976) les résultats ont été décevants et ceci à cause, d'une part de difficultés de démarrage (problèmes alimentaires en autres), d'autre part de problèmes sanitaires : la furonculose ayant entrainé des mortalités importantes dès le 1er automne (alevins à bonne croissance) ou en fin d'hiver. Au total, la survie a toujours été très faible et la production de smolts négligeable. C'est pourquoi, à partir de la saison 79-80, les objectifs ont été tournés davantage vers l'expérimentation tout en conservant un objectif...

Tipo: Text

Palavras-chave: Saumon atlantique; Salmo salar; Elevage; Juvénile; Paramètres élevage; Données économiques; Pisciculture.

Ano: 1981

URL: http://archimer.ifremer.fr/doc/00083/19420/17031.pdf

HISTOLOGY OF THE JAW DEFORMATION IN SALMON OF SOUTHERN CHILE

Les résultats de la campagne 1979-1980 ont montré la nécessité d'améliorer les performances de l'alevinage pour obtenir des résultats de production intéressants en cycle ouvert dans les conditions bretonnes. En effet, une augmentation du taux de smoltification à un an ne semble pouvoir être obtenue dans des conditions économiquement intéressantes (Charge très supérieure à 2 kg/m2), qu'à condition que la taille des tacons soit au moins égale à 6-7 cm en septembre de la première année. En conséquence, l'objectif expérimental de la saison 1980-1981 est de déterminer les conditions d'élevage qui puissent permettre d'obtenir un population homogène ayant une bonne croissance c'est-à-dire très supérieure à celle obtenue en 79-80....

Tipo: Text

Palavras-chave: Aquaculture; Pisciculture; Production; Juvéniles; Salmo salar; Densité.

Ano: 1981

URL: http://archimer.ifremer.fr/doc/00143/25381/23519.pdf

Morphological Study and Mineral Analysis of the Lower Mandible of Adult Atlantic Salmon (Salmo salar) from Scotland with Mandibular Deformation

Venegas,Felipe; Montiel,Enrique; Forno,Pablo; Rojas,Mariana.

In adult salmon of the sea centres in southern Chile, a jaw deformation (JD) has been identified. It affects the dental and hyomandibular bones, which bend ventrally up to 90° of their normal position. The deformation affects also the dental articular bone. This pathology is related to weight loss and increased mortality of the salmons. It was empirically postulated that a probable cause for this anomaly was food from vegetal origin in the diet of the fishes (which are carnivores) Therefore, the present work aims at comparing the biostructure of jaw bone of salmons fed either with vegetal (soja and gluten) formulation or animal formulation, mostly fish powder. Fifty specimens were analyzed from Puerto Montt, 35 having JD and 15 normal control....

Tipo: Journal article

Palavras-chave: Jaw; Jaw deformation; Histology; Salmon; Salmo salar.

Ano: 2003

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300005

Rojas Rauco,Mariana; Ramírez Maldonado,Emilio; del Sol,Mariano.

Mandibular deformity is a condition that affects the jaw bone of adult salmon and has been observed in Norway and Chile, causing weight loss, poor quality of farmed fish and increased mortality. The causes range from high temperatures of the state of eggs, to poor nutrition phosphorus or vitamin C. This work aims to analyze this deformity by histochemical and mineral analysis technique during an episode presented in centers of the Scotia Sea. Jaw and spinal segments of 21 Atlantic salmon in Scotland were used. These samples were classified into three groups: Group 1: Severely deformed. Group 2: Mildly affected. Group 3: Normal controls. Four jaws per group were fixed in 10 % formalin and embedded in Paraplast, sections of 5 microns were performed using a...

Tipo: Journal article

Palavras-chave: Dentary bone; Salmon skeleton; Mandibular deformation; Salmo salar; Von Kossa.

Ano: 2016

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300046

Morphology of the Eyeball, Orbit and Retina of Atlantic Salmon (Salmo Salar) Alevins under Hypoxic Conditions

Nutrients from salmon parents alter selection pressures on their offspring

Pellón,Mario; Rojas,Mariana; Saint-Pierre,Gustavo; Hartley,Ricardo; del Sol,Mariano.

It has been demonstrated that hypoxia retards the growth of fish, reduces the survival of their larvae, deforms their vertebral column, but despite this teleost fish have the ability to completely regenerate many of their tissues, particularly the retina. As we do not have enough information about the effects of hypoxia on the eyeball, orbit and retina of Atlantic salmon (Salmo salar), we propose the following objectives: 1) Compare the morphological changes of the eyeball of fish subject to hypoxia and normoxia. 2) Determine changes in the orbit structure. 3) Describe the retina of salmon alevins. 4). Recognize hypoxic cells using the anti-Hif1a antibody in the retina of alevins as a sensor. 5) Determine the Shh morphogenic expression in alevins exposed...

Tipo: Journal article

Palavras-chave: Eyeball; Orbit; Retina; Salmo salar; Hypoxia; HIF1a; Shh.

Ano: 2016

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100046

Programme de repeuplement - "Sea Rancing" en Salmonidés migrateurs - Production de juvéniles saison 80-81

Auer, Sonya K.; Anderson, Graeme J.; Mckelvey, Simon; Bassar, Ronald D.; Mclennan, Darryl; Armstrong, John D.; Nislow, Keith H.; Downie, Helen K.; Mckelvey, Lynn; Morgan, Thomas A. J.; Salin, Karine; Orrell, Danielle L.; Gauthey, Alice; Reid, Thomas C.; Metcalfe, Neil B..

Organisms can modify their surrounding environment, but whether these changes are large enough to feed back and alter their evolutionary trajectories is not well understood, particularly in wild populations. Here we show that nutrient pulses from decomposing Atlantic salmon (Salmo salar) parents alter selection pressures on their offspring with important consequences for their phenotypic and genetic diversity. We found a strong survival advantage to larger eggs and faster juvenile metabolic rates in streams lacking carcasses but not in streams containing this parental nutrient input. Differences in selection intensities led to significant phenotypic divergence in these two traits among stream types. Stronger selection in streams with low parental nutrient...

Tipo: Text

Palavras-chave: Eco-evolutionary dynamics; Eco-evolutionary feedbacks; Natural selection; Niche construction; Salmo salar; Selection differential; Selection gradient.

Ano: 2018

URL: https://archimer.ifremer.fr/doc/00414/52586/53426.pdf

Résultats d'élevage de S. salar en Bretagne - Saison 1979-1980

Ce document a pour but de fournir l' ensemble des résultats et des observations recueillis au cours d 'une saison dans le cadre de programmes CNEXO . En effet, si certaines données sont obtenues grâce à des expériences originales et dans ce cas font ou feront l'objet de publications, d'autres constituent de simples notes ou essais qui peuvent représenter globalement une expérience susceptible de pouvoir aider à l'amélioration de techniques de production nécessaires au développement de l'activité Aquaculture - Repeuplement. Il a en outre la particularité de fournir des données sur des sujets dont l 'homogénéité n'apparaît peut - être pas évidente au lecteur élevage intensif de juvéniles. repeuplement, "Sea Ranching", gestion des stocks. Pourtant il n' y a...

Tipo: Text

Palavras-chave: Aquaculture; Salmo salar; Saumon atlantique; Production; Juvénile; Repeuplement; Gestion de stocks.

Ano: 1981

URL: http://archimer.ifremer.fr/doc/00078/18902/16488.pdf

Stock characteristics of Atlantic salmon (Salmo salar) in France: a review

Le saumon atlantique, S. salar, est une espèce de salmonidés relativement délicate à élever dans sa phase eau douce, et seuls les pisciculteurs ou organismes directement intéressés par l'aquaculture ou le repeuplement tentent depuis quelques années des essais d'élevage, tous très décevant en Bretagne jusqu'à présent. Lors des la saison 1979-1980, 5 élevages au total ont été, à notre connaissance, pratiqués en Bretagne. Parmi ces élevages, 3 ont été suivis durant toute la saison (production de smolts 1+ uniquement.

Tipo: Text

Palavras-chave: Aquaculture; Pisciculture; Saumon atlantique; Salmo salar; Elevage.

Ano: 1980

URL: http://archimer.ifremer.fr/doc/00143/25382/23520.pdf