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Registros recuperados: 8
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A standard weight equation to assess the body condition of pejerrey Odontesthes bonariensis Biocell
Colautti,Darío C.; Remes Lenicov,Mauricio; Berasain,Gustavo E..
We developed a standard weight equation Ws to aid in the analysis of pejerrey Odonthestes bonariensis body condition over time and across populations using the relative weight index Wr. Weight - length data were compiled from 73 populations of pejerrey (N=16.022) from the Argentine pampas region. We used the regression-line-percentile technique, which provides a 75th-percentile standard by length intervals of 10 mm, to develop the Ws equation. The proposed equation is log10 Ws=-5,267+3,163 log10 Lst; Ws is weight in grams and Lst is standard length in millimeters. This equation is proposed for use with pejerrey between 120 and 520 mm of Lst. Values for Wr calculated with the Ws equation did not consistently increase or decrease as function of fish length,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Standard weight; Pejerrey; Odontesthes bonariensis; Condition.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100017
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Détermination de la condition des juvéniles de sole (Solea solea) dans les pertuis Charentais (suivi saisonnier d'avril à juillet) ArchiMer
Pinaudeau, Graziella.
Les zones côtières et estuariennes des pertuis Charenta is abritent des nourriceries indispensables à l'accomplissement du cycle biologique de la sole commune (Solea solea). Une récente étude a mis en évidence un parasitisme élevé chez les juvéniles pouvant être lié aux activités conchylicoles soutenues dans cette zone. La cond ition au sens large (croisance en taille et masse, statut lipidique et immunitaire) des juvéniles de sole (GO) est étudiée et un suivi saisonnier de mai à juillet est effectué dans le pertuis Breton. L' indice de condition des juvéniles à leur arrivée sur la nourricerie est de 1,1 g cm-3 ce qui traduit une bonne condition. La croissance plus é levée en mai (0,8 mm j-1) semble ralentir en juillet (0,3 mm j-1). Les réserves lipidiques...
Tipo: Text Palavras-chave: Solea solea; Condition; Trématodes; Digènes; Lipides; Leucocytes; Activité hémolytique du complément.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/00426/53739/54620.pdf
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Fish life-history traits are affected after chronic dietary exposure to an environmentally realistic marine mixture of PCBs and PBDEs ArchiMer
Horri, Khaled; Alfonso, Sebastien; Cousin, Xavier; Munschy, Catherine; Loizeau, Veronique; Aroua, Salima; Begout, Marie-laure; Ernande, Bruno.
Polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) are persistent organic pollutants that have been shown to affect fish life-history traits such as reproductive success, growth and survival. At the individual level, their toxicity and underlying mechanisms of action have been studied through experimental exposure. However, the number of experimental studies approaching marine environmental situations is scarce, i.e., in most cases, individuals are exposed to either single congeners, or single types of molecules, or high concentrations, so that results can hardly be transposed to natural populations. In the present study, we evaluated the effect of chronic dietary exposure to an environmentally realistic marine mixture of PCB and...
Tipo: Text Palavras-chave: Contaminants; Body length; Condition; Fertilization rate; Energy allocation; Trade-off.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00396/50694/51450.pdf
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Life-history of the South American darter, Characidium pterostictum (Crenuchidae): evidence for small scale spatial variation in a piedmont stream Neotropical Ichthyology
Becker,Fernando Gertum; Carvalho,Silene de; Hartz,Sandra Maria.
The present study compares the reproduction, condition and size of the small characiform fish, Characidium pterostictum, sampled at close sites differing in severity of flash flood effects. Data were obtained from seasonal samples in two sites situated 8 km apart in the same stream. In the upstream site, habitat is more severely affected by flash floods than in the downstream site, and this difference was hypothesized to produce differences in life history and individual reproduction trade-off patterns, as predicted by life-history theory. The results provided evidence for small-scale spatial variation in life-history and trade-off patterns within the studied population. At the most severely disturbed site, C. pterostictum displayed a trade-off pattern...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Condition; Reproductive trade-off; Natural disturbance.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400007
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Os solos da colônia agrícola de Tomé-Açu. Repositório Alice
FALESI, I. C.; SANTOS, W. H. dos; VIEIRA, L. S..
1964
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Solo; Levantamento; Condição social; História; Clima; Vegetação; Latossolo amarelo; Latosolo concrecionario alaranjado; Análise; Tomé-Açu; Pará; Amazônia; Brasil; Soil; Survey; Condition; History; Climate; Vegetation; Yellow latosol; Red yellow concresciones latosol; Analysis.
Ano: 1964 URL: http://www.alice.cnptia.embrapa.br/handle/doc/386457
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Possible link between prey quality, condition and growth of juvenile hake (Merluccius merluccius) in the Gulf of Lions (NW Mediterranean) ArchiMer
Harmelin Vivien, Mireille; Mahe, Kelig; Bodiguel, Xavier; Mellon, Capucine.
The energy value of the main prey and the growth of juvenile hake in the Gulf of Lions were analysed to determine whether fish condition could be linked to difference in prey quality and resulted in growth difference. Large differences in energy content (15.6 to 23.6 kJ g(-1) DW) among prey types were recorded with low values found in amphipods and natantid shrimps, intermediate values in euphausiids and mysids, and high values in fish. High condition in juvenile hake was linked to the consumption of prey with high energy content. However, no difference in fish growth was observed by the analysis of otolith micro-increments.
Tipo: Text Palavras-chave: Merluciidae; Merluccius merluccius; Hake; Mediterranean Sea; Energy; Condition; Otolith microstructure.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00092/20332/18611.pdf
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Seasonal analysis of condition, biochemical and bioenergetic indices of females of Brazilian flathead, Percophis brasiliensis Neotropical Ichthyology
Rodrigues,Karina A.; Macchi,Gustavo J.; Massa,Agueda; Militelli,María I..
Percophis brasiliensis is a demersal species that constitutes an important resource of Argentine coastal fisheries. Nevertheless, information about bioenergetic dynamic of reproduction has not been reported. Therefore, seasonal variations of condition factors, biochemical composition and energy density of different tissues were analyzed in order to determine the strategy of energy allocation during the reproductive cycle of this species. Condition indices (hepatosomatic and K) showed a seasonal pattern opposite to that observed for gonadosomatic index, which was characterized by higher values during the reproductive period (spring-summer), decreasing at the end of spawning. Biochemical composition of different tissues also showed a clearly seasonality...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biochemical composition; Condition; Energy density; Reproduction.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100153
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Shellfish Fishery Severely Reduces Condition and Survival of Oystercatchers Despite Creation of Large Marine Protected Areas Ecology and Society
Verhulst, Simon; Zoological Laboratory of the University of Groningen; s.verhulst@biol.rug.nl; Oosterbeek, Kees; ; kees.oosterbeek@wur.nl; Rutten, Anne L; ; anne.rutten@wur.nl; Ens, Bruno J; ALTERRA - Texel; bruno.ens@wur.nl.
Fisheries and other human activities pose a global threat to the marine environment. Marine protected areas (MPAs) are an emerging tool to cope with such threats. In the Dutch Wadden Sea, large MPAs (covering 31% of all intertidal flats) have been created to protect shellfish-eating birds and allow recovery of important habitats. Even though shellfish fishing is prohibited in these areas, populations of shellfish-eating birds in the Wadden Sea have declined sharply. The role of shellfish fisheries in these declines is hotly debated, therefore, we investigated the effectiveness of MPAs for protecting oystercatcher (Haematopus ostralegus) populations. Shellfish stocks (cockles, Cerastoderma edule) were substantially higher in the MPAs, but surprisingly this...
Tipo: Peer-Reviewed Reports Palavras-chave: Buffy coat; Condition; Haematopus ostralegus; Hematocrit; Ideal free distribution; Marine reserves; Shellfish fishery.
Ano: 2004
Registros recuperados: 8
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