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Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency ArchiMer
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
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Coded wire tagging of juvenile curimbatá, Prochilodus lineatus (Valenciennes, 1837) (Characiformes): mortality, tag retention, and growth Neotropical Ichthyology
Barroca,Tatiana M.; Gutiérrez-Espinosa,Mónica A.; Giraldo,Alejandro; Bedore,Alessandra G.; Godinho,Alexandre L..
In recent decades, Brazilian hydroelectric reservoirs have been stocked with hundreds of millions of juvenile migratory fish, but almost no research on stocking has been conducted. In order to study stocking it is essential to tag the fish to be stocked. In this investigation we determined handling-induced mortality, tag retention rate, and absolute growth rate of hatchery-reared juvenile curimbatá (Prochilodus lineatus) tagged with coded wire tags (CWT), a tag widely used on stocked fish. We injected CWT into the dorsal musculature just below the first dorsal fin ray. Despite the need for frequent tag injector maintenance, this tagging location proved to be suitable for tagging juvenile curimbatá. We found no short-term mortality of juvenile curimbatá...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropical fish; Passive tag; Stocking; Tag retention; Tagging mortality.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200383
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Combining population genomics and forward simulations to investigate stocking impacts: A case study of Muskellunge ( Esox masquinongy ) from the St. Lawrence River basin ArchiMer
Rougemont, Quentin; Carrier, Anne; Le Luyer, Jeremy; Ferchaud, Anne-laure; Farrell, John M.; Hatin, Daniel; Brodeur, Philippe; Bernatchez, Louis.
Understanding the genetic and evolutionary impacts of stocking on wild fish populations has long been of interest as negative consequences such as reduced fitness and loss of genetic diversity are commonly reported outcomes. In an attempt to sustain a fishery, managers implemented nearly five decades of extensive stocking of over a million Muskellunge (Esox masquinongy), a native species in the Lower St. Lawrence River (Québec, Canada). We investigated the effect of this stocking on population genetic structure and allelic diversity in the St. Lawrence River in addition to tributaries and several stocked inland lakes. Using Genotype‐By‐Sequencing (GBS), we genotyped 643 individuals representing 22 locations and combined this information with forward...
Tipo: Text Palavras-chave: Admixture; Esox masquinongy; Forward simulations; Gene flow; Genomic; Stocking.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00476/58791/61324.pdf
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Comparative analysis of phylogenetic and fishing effects in life history patterns of teleost fishes ArchiMer
Rochet, Marie-joelle; Cornillon, Pierre-andré; Sabatier, Robert; Pontier, Dominique.
The effects of fishing on life history traits and life history strategies of teleost fishes are analysed by a new comparative method that splits traits into an allometric part (size effect), an autoregressive phylogenetic component, and an environmental component (fishing effect). Both intra- and inter-specific variation of age and size at maturity, fecundity, adult size and egg size are analysed by comparing 84 populations of 49 species submitted to various fishing pressures. Two axes of life history diversification are found among teleosts. One is the well-known slow-fast continuum separating short-lived and early maturing species (like Clupeiformes) From longer-lived species that mature late relative to their size and spawn larger eggs (like salmonids...
Tipo: Text Palavras-chave: Stocking; Recreational fisheries; Habitat rehabilitation; Freshwater fisheries; Ecosystem management; Angling.
Ano: 2000 URL: https://archimer.ifremer.fr/doc/2000/publication-667.pdf
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Diet shift of Red Belly Pacu Piaractus brachypomus (Cuvier, 1818) (Characiformes: Serrasalmidae), a Neotropical fish, in the Sepik-Ramu River Basin, Papua New Guinea Neotropical Ichthyology
Correa,Sandra Bibiana; Betancur-R.,Ricardo; Mérona,Bernard de; Armbruster,Jonathan W..
Introduction of fish species is a globally widespread practice that causes losses of native species and homogenization of diversity within and across continents. Diet assessments are important tools to depict the ecological function of species introduced into novel ecosystem and possible direct and indirect ecological effects. In this study, we compare the diet of Piaractus brachypomus, a mainly frugivorous Neotropical fish, introduced into the Sepik-Ramu River Basin (Papua New Guinea) nearly two decades ago, to that of similar size individuals from Neotropical populations in the Amazon and Orinoco River basins (South America). In contrast to native populations that feed mainly on terrestrial plants and invertebrates, the diet of introduced P. brachypomus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exotic fish; Fruit-eating fish; Species introduction; Red Belly Pacu; Stocking.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000400827
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ECONOMIC IMPACTS OF NOXIOUS WEEDS, OTHER WEEDS, AND TREE GROWTH, ON AGRICULTURAL PRODUCTION IN THE NEW ENGLAND TABLELANDS, NEW SOUTH WALES AgEcon
Townsend, J.; Sinden, Jack A..
The economic impact of weeds on farms in the New England Region of New South Wales is estimated from data from a cross -sectional survey. Weeds can be classed as noxious or declared plants, plants that the farmers perceived as weeds, and trees -- which many farmers also perceived as weeds. Variables were defined for several levels of intensity of infestation for each of these three classes of weeds. The impact of each these variables, on property income and stocking, was estimated through Cobb-Douglas production functions. The presence of very-heavy infestations of non-noxious weeds, and heavy infestations of non-noxious weeds, were found to be associated with reductions in income. In total, the income of the representative property would be increased...
Tipo: Working or Discussion Paper Palavras-chave: Weeds; Trees; Income; Stocking; Farm Management.
Ano: 1999 URL: http://purl.umn.edu/12918
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Feno de maniçoba: forragem para enfrentar as secas. Infoteca-e
SALVIANO, L. M. C.; SOARES, J. G. G..
bitstream/CPATSA/8782/1/INT40.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Toxicidade; Manihot pseudoglaziovii; Nordeste; Região semi-árida; Stocking; Northeast; Semiarid region.; Armazenamento; Fenação; Maniçoba; Valor Nutritivo.; Hay; Brazil; Nutritive value; Toxicity..
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134120
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Leucena: suplemento proteico para a pecuária do semi-árido no período seco. Infoteca-e
OLIVEIRA, M. C. de.
bitstream/CPATSA/8852/1/CTE51.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Leucena; Suplementação; Cultivo; Semi-Árido; Supplementary feeding; Cultivation; Stocking; Semiarid region.; Produção animal; Armazenamento; Ensilagem; Leucaena Leucocephala; Nutrição Animal; Planta Forrageira; Valor Nutritivo.; Animal production; Animal nutrition; Forage; Nutritive value; Silage..
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134204
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Performance, carcass characteristics and litter moisture in broilers housed at two densities Animal Sciences
Gopinger, Edenilse; Avila, Valdir Silveira de; Perondi, Dani; Catalan, Aiane Aparecida da Silva; Krabbe, Everton Luis; Roll, Victor Fernando Büttow.
The effect of stocking density in broiler chickens (11.08 and 13.20 birds m-2), between 5 and 45 days of age, was assessed with regard to performance, cut yield, litter moisture and frequency of pododermatitis injuries. Further, 476 one-day chicks Cobb 500® were distributed in a completely randomized design at two densities (birds m-²), with seven replications per treatment in 14 experimental units. Birds housed at a lower density (11.08) increased feed intake (p < 0.05), without any effect on weight gain and feed conversion. Retail yields were not influenced (p > 0.05) by treatments. In the case of higher density (3.20)the litter showed higher moisture content (p < 0.05) at 28 and 35 days of age. There was a higher occurrence of pododermatitis in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chickens; Feed intake; Stocking; Environment; Pododermatitis; Welfare.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24732
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Physical, chemical and sensory evaluation of meat from cobia (rachycentron canadum), desensitized with different voltages of electric shock, stored under refrigeration Ciência Rural
Melo,Fúlvio Viegas Santos Teixeira de; Viegas,Elisabete Maria Macedo; Parisi,Giuliana; Bordignon,Adriana Cristina; Cruz Neto,Manoel Adriano da; Melo,Jose Fernando Bibiano.
ABSTRACT: Fish quality is conditioned by several factors, among them desensitization methods applied for fish managing and slaughtering. This research used electric shock at different intensities as a desensitization method for cobia (Rachycentron canadum) slaughtering and evaluated its effects over fish quality during refrigerated storage. The experiment was carried out by numbing the fish with electroshock at the intensities of 100, 150 and 200 Volts, and keeping them in refrigerated storage for 21 days. On the cobia, obtained from a commercial fish farm the following physical, chemical and sensorial characteristics as quality variables were evaluated: dielectric properties, rigor index, pH, texture, color, sensorial evaluation of freshness, ATP and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Stocking; Freshness; Welfare; Aquaculture.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200650
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Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals Neotropical Ichthyology
Conte-Grand,Cecilia; Sommer,Julie; Ortí,Guillermo; Cussac,Víctor.
The original distribution area of the Patagonian 'pejerrey' Odontesthes hatcheri has been subjected to the introduction of a related species; the Bonaerensean 'pejerrey' Odontesthes bonariensis. This species currently coexists with O. hatcheri in lakes and reservoirs, and can interbreed and produce fertile hybrid offspring. The purposes of this study were; a) the extensive sampling of Patagonian and Andean-Cuyan populations of pejerrey, b) the species identification according to taxonomic key, c) validation of taxonomic results on the basis of mitochondrial DNA composition, and d) applying morphometric analysis to explore the effects of hybridization and environmental conditions on body shape. Cytochrome b sequence analysis showed a high degree of genetic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Geometric morphometrics; Patagonia; Pejerrey; Stocking.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100137
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Produção de carne de bovinos em pastagem cultivada em terra firme. Infoteca-e
LOURENÇO JUNIOR, J. de B.; CAMARÃO, A. P.; COSTA, N. A. da; RODRIGUES FILHO, J. A.; DUTRA, S.; CARVALHO, L. O. D. de M.; NASCIMENTO, C. N. B. do; HANTANI, A. K..
bitstream/item/32747/1/CPATU-BP148.pdf
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Bovino de corte; Bovine; Fattening; Stocking; Rate; Cultivated pasture; Management.; Bovino; Engorda; Ganho de Peso; Manejo; Pastejo; Pastagem Cultivada; Taxa de Lotação.; Grazing; Beef cattle; Weight gain..
Ano: 1993 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/378458
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Produção de forragem e desempenho animal em pastagens de coastcross consorciada ou não com Arachis pintoi, com e sem nitrogênio - DOI: 10.4025/actascianimsci.v30i4.6466 Animal Sciences
Ribeiro, Ossival Lolato; UNIOESTE; Cecato, Ulysses; UEM; Roma, Cláudio Fabrício da Cruz; UEM; Faveri, Juliana Cantos; UEM; Gomes, José Augusto Nogueira; UEM; Barbero, Leandro Martins; UEM.
O estudo objetivou avaliar a produção de forragem e desempenho animal em pastagens de Coastcross + Arachis pintoi; Coastcross + Arachis pintoi com 100 kg ha-1 de N; Coastcross + Arachis pintoi com 200 kg ha-1 de N e Coastcross com 200 kg ha-1 de N, nas estações de inverno, primavera, verão e outono. Utilizou-se o delineamento experimental em blocos ao acaso, com os tratamentos em parcelas subdivididas, com duas repetições. Foram avaliados: acúmulo de massa de forragem e acúmulo diário de massa de forragem, ganho médio diário (GMD), ganho de peso vivo por área e taxa de lotação. A utilização de Coastcross + 200 kg ha-1 de N e as melhores condições climáticas na primavera e verão favoreceram tanto o acúmulo de massa de forragem (26.764 kg ha-1 de MS) quanto...
Palavras-chave: 5.04.04.00-8 Pastagem e Forragicultura acúmulo de forragem; Consorciação; Ganho médio diário; Lotação; Massa de forragem; Peso vivo por hectare. accumulation of forage; Intercropping; Average daily gain; Stocking; Forage mass; Live weigth ha-1..
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/6466
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