EurekaMag.com logo
+ Site Statistics
References:
53,214,146
Abstracts:
29,074,682
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Egg-to-fry survival of brown trout Salmo trutta and chemical environment in the redd Survie embryo-larvaire de la truite Salmo trutta et conditions chimiques dans la frayere


Cybium. 15 Decembre; 243: 129-140 (Supplement)
Egg-to-fry survival of brown trout Salmo trutta and chemical environment in the redd Survie embryo-larvaire de la truite Salmo trutta et conditions chimiques dans la frayere
In nitrate-rich rivers passing through agricultural watersheds, the deposition of fine sediment in the streambed creates anaerobic conditions favourable to nitrite and ammonia production, toxic for salmonids. The aim of this study was to determine if these nitrogen species have an impact on survival of trout eggs buried into the gravel. The impact of water quality on incubating embryos was studied in two tributaries where brown trout reproduction occurs. Incubators were buried into the gravel at fertilisation and extracted at eyed stage, hatching and emergence of fry. Characteristics of interstitial water (dissolved oxygen, nitrite, ammonia) were measured each week during incubation. The study demonstrates that: (1) mortalities are high as soon as egg stage in the two tributaries and more pronounced on schist; (2) in the streambeds, nitrite concentrations are lethal for embryos, this impact being higher when dissolved oxygen concentrations are low. Ammonia concentration seems to be insufficient to have an impact on mortalities; (3) embryos mortalities have an impact on interstitial water composition by increasing nitrite and ammonia concentrations.

(PDF 0-2 workdays service: $29.90)

Accession: 038198832



Related references

Survie embryo-larvaire de la truite (Salmo trutta) et conditions chimiques dans la frayere. Cybium 24(3 Supplement): 129-140, 2000

Feeding behaviour of Atlantic salmon, Salmo salar L, and brown trout, Salmo trutta L, during the emergence related habitat change in semi-natural conditions Comportement alimentaire au cours du changement dhabitat lie a lemergence chez le saumon Atlantique, Salmo salar L, et la truite commune, Salmo trutta L, en conditions semi-naturelles. Bulletin Francais de la Peche et de la Pisciculture, 337-339: 207-214, 1995

Growth variability analysis of a brown trout Salmo trutta L population in a Pyrenean mountain stream Analyse de la variabilite de la croissance dune population de truite commune Salmo trutta L dans un torrent Pyreneen. Bulletin Francais de la Peche et de la Pisciculture, 357-360: 573-594, 2001

Cognitive evolution and morphologic comparison of the lake trout salmo trutta lacustris of lake garda italy with salmo trutta carpio salmo trutta marmoratus salmo trutta fario and salmo trutta gairdneri. Atti del Museo Civico di Storia Naturale di Trieste 36(2): 83-106, 1984

Total length of age-3 brown trout Salmo trutta L in French Pyrenean streams Relationships with environmental factors and influence of hydroelectric facilities Taille a 3 ans de la truite commune Salmo trutta L dans les rivieres des Pyrenees Francaises Relations avec les caracteristiques mesologiques et influence des amenagements hydroelectriques. Bulletin Francais de la Peche et de la Pisciculture, 357-360: 549-571, 2001

Habitat use strategies by post-emergent fry of brown trout Salmo trutta and Atlantic salmon Salmo salar Strategies dutilisation de lhabitat par les alevins post-emergents de truite commune Salmo trutta et de saumon Atlantique Salmo salar. Bulletin Francais de la Peche et de la Pisciculture, 337-339: 199-205, 1995

The number of eggs which remain in the gastric cavity of the female of the sea-trout (Salmo trutta L.) of the rainbow trout (Salmo irideus Gibb.) and the cross between the trout (Salmo trutta m. fario L.) and the sea-trout (Salmo trutta L.) after the art. Compte Rendu Sci math nat Acad polon, 1-3: 11-12, 1950

Multi-scales approach of the relationships between brown trout Salmo trutta L populations and habitat features in the central Pyrenees Approche multi-echelles des relations entre les caracteristiques dhabitat et les populations de truite commune Salmo trutta L dans les Pyrenees centrales. Bulletin Francais de la Peche et de la Pisciculture, 337-339: 399-406, 1995

Temporal dynamic of the contribution of stocking with precocious stages of brown trout Salmo trutta L in the standing population and in anglers catches in the French-Swiss part of the River Doubs Dynamique temporelle de la contribution du repeuplement en stades precoces de truite Salmo trutta L dans la population en place et dans la peche sur le Doubs Franco-Suisse. Bulletin Francais de la Peche et de la Pisciculture, 365-366: 471-485, 2002

Morphological criteria for identification of two forms river, sea of brown trout Salmo trutta present in the same river Criteres morphologiques pour lidentification des deux formes riviere et mer de truite Salmo trutta presentes sur un meme bassin. Bulletin Francais de la Peche et de la Pisciculture, 357-360: 375-383, 2001