Results 11 to 20 of about 28,185 (102)

Mammifères aquatiques et semi-aquatiques introduits en France. Risques et conséquences

open access: yesKnowledge and Management of Aquatic Ecosystems, 1997
La faune mammalienne française, qui compte un peu plus d'une centaine d'espèces, héberge maintenant 7 espèces aquatiques ou semi-aquatiques introduites. Il faut y ajouter le castor canadien, récemment éliminé.
MOUTOU F.
doaj   +1 more source

EFFECTS OF RATION SIZE AND TEMPERATURE ON MOULT INCREMENT AND METABOLIC PARAMETERS OF JUVENILE NOBLE CRAYFISH, ASTACUS ASTACUS

open access: yesKnowledge and Management of Aquatic Ecosystems, 2007
A laboratory experiment was carried out to test the combined effects of ration size (1 vs 3% body weight, b.w.) and temperature (15 ± 2 vs 22 ± 2 °C) on moult increment and metabolic parameters of 80 juvenile noble crayfish (Astacus astacus). The maximum
RENAI B., GHERARDI F., D’AGARO E.
doaj   +1 more source

Dietary L-carnitine improves glycogen and protein accumulation in Nile tilapia via increasing lipid-sourced energy supply: An isotope-based metabolic tracking

open access: yesAquaculture Reports, 2020
L-carnitine is a functional aquafeed additive for enhancing lipid catabolism by elevating mitochondrial fatty acid β-oxidation and modulating energy metabolism to provide a “protein sparing effect”.
Ling-Yu Li   +7 more
doaj   +1 more source

COMPARISON OF WHITE-CLAWED CRAYFISH POPULATIONS IN IRISH AND FRENCH STREAMS, WITH COMMENTS ON ITS FUTURE SURVIVAL IN EUROPE

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
White-clawed crayfish Austropotamobius pallipes (Lereboullet) populations remain strong in Ireland across a range of river and lake habitats, but the species is in decline elsewhere in Europe where it is sympatric with alien species.
REYNOLDS J. D., DEMERS A.
doaj   +1 more source

Using of betaine to replace fish meal with soybean or/and corn gluten meal in nile tilapia (Oreochromis niloticus) diets: Histomorphology, growth, fatty acid, and glucose-related gene expression traits

open access: yesAquaculture Reports, 2020
The present study was conducted to replace fish meal with alternative plant protein sources in aquafeeds. Therefore, soybean meal (SBM), corn gluten meal (CGM), and mix of SBM + CGM were used as alternatives to fish meal (FM) with or without betaine (B ...
Taha Ismail   +6 more
doaj   +1 more source

The ecological requirements of caddisflies larvae (Insecta: Trichoptera) and their usefulness in water quality assessment of a river in south-west Romania

open access: yesKnowledge and Management of Aquatic Ecosystems, 2013
This survey analyzed the eco-physiological requirements of caddisflies assemblages in Jiu River (south- west Romania). The output revealed that the communities are driven by a synergic combination of natural factors and pollutants ...
Pirvu M., Pacioglu O.
doaj   +1 more source

Dietary administration of Enterococcus faecalis affects the growth, disease resistance and immune function of tilapia (Oreochromis niloticus)

open access: yesAquaculture Reports, 2020
The present study aimed to investigate the growth, disease resistance and immune function of tilapia (Oreochromis niloticus) fed diets containing Enterococcus faecalis at levels of 0 (CG), 1 × 105 (EF1), 1 × 106 (EF2), 1 × 107 (EF3) or 1 × 108 CFU/g diet
Hongqin Li   +5 more
doaj   +1 more source

Daytime habitat selection for juvenile parr brown trout (Salmo trutta) in small lowland streams

open access: yesKnowledge and Management of Aquatic Ecosystems, 2014
Physical habitat is important in determining the carrying capacity of juvenile brown trout, and within freshwater management. Summer daytime physical habitat selection for the parr lifestage (7–20 cm) juvenile brown trout (Salmo ...
Conallin J.   +5 more
doaj   +1 more source

Use of dietary frass from black soldier fly larvae, Hermetia illucens, in hybrid tilapia (Nile x Mozambique, Oreocromis niloticus x O. mozambique) diets improves growth and resistance to bacterial diseases

open access: yesAquaculture Reports, 2020
Frass, a by-product of the larval meal industry, is heterogeneous and includes larval excrement, exoskeleton sheds and residual feed ingredients along with abundant nutrients, chitin and beneficial microbes.
Mediha Yildirim-Aksoy   +3 more
doaj   +1 more source

Importance of small fishes and invasive crayfish in otter Lutra lutra diet in an English chalk stream

open access: yesKnowledge and Management of Aquatic Ecosystems, 2017
The diet composition of the European otter Lutra lutra was assessed using spraint analysis in the Hampshire Avon, a lowland chalk stream in Southern England, over an 18-month period.
Britton J. Robert   +4 more
doaj   +1 more source

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