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The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris
Springer Science and Business Media LLC - Tập 76 - Trang 129-138 - 2006
We investigated the effects of substrate composition on foraging behavior and growth rate of␣larval green sturgeon, Acipenser medirostris, in the␣laboratory at 20±1°C over a period of 5 weeks. Larval groups (n = 100) with mean wet weight (0.72 ± 0.01 g) at 50 days post-hatch were reared on slate-rocks, cobble, sand or glass. Typically, fish were negatively rheotactic and exhibited dispersed skimmi......
The fast-growing strain of hydrocarbon-rich green alga Botryococcus braunii, BOT-22, is a vitamin B12 autotroph
Springer Science and Business Media LLC - Tập 26 - Trang 9-13 - 2013
Botryococcus braunii is one of the most promising microalgal feedstocks for biofuel production because it accumulates a large amount of hydrocarbons within the colony. Several researchers have used vitamin-free media for short-term culture experiments of B. braunii. However, vitamin requirements of B. braunii have never been explicitly described. Therefore, the consequence......
Fishes of a subtropical Australian saltmarsh and their predation upon mosquitoes
Springer Science and Business Media LLC - Tập 21 - Trang 185-194 - 1988
The fishes occurring in a subtropical Australian saltmarsh were studied from January to December 1984 to determine the seasonal abundance and feeding of the most common species. Wide variations in pool water levels and salinity were recorded. Eight species of fish were collected, four of which are of economic importance to fisheries. Three taxa, Gambusia affinis, Pseudomugil signifer, and gobiids ......
Metabolic changes and activity pattern of antioxidant enzymes induced by salicylic acid treatment in green microalga Dunaliella salina under nitrogen deficiency
Springer Science and Business Media LLC - Tập 31 - Trang 1709-1719 - 2019
The effect of salicylic acid (SA), an endogenous plant growth regulator, on adaptation of the green microalga, Dunaliella salina to N starvation was investigated through the study of enzymatic antioxidant system and biochemical changes. Algal cells in the exponential growth phase were exposed to N deficiency with 100 μM of SA. N starvation significantly decreased cell number, chlorophyll a, and hy......
The enzymatic degradation of algal cell walls: a useful approach for improving protein accessibility?
Springer Science and Business Media LLC - Tập 11 - Trang 313-314 - 1999
With protein contents higher than 20% (dry weight), some red or green seaweeds are potential sources of commercially useful plant proteins. However, the presence of anionic or neutral polysaccharides in large quantities in the cell wall strongly hinders the solubilization of proteins during the application of classical extraction procedures. A present this limits the study and industrial use of se......
Sensory and fatty acid analyses of two Atlantic species of Porphyra (Rhodophyta)
Springer Science and Business Media LLC - Tập 18 - Trang 79-85 - 2006
Sensory analyses were conducted to determine levels of consumer acceptability of Porphyra yezoensis, P. umbilicalis, and P. amplissima to select appropriate species for aquaculture development in Maine (USA). The subjects included children (n = 67) and adults (n = 84); the children participated in study design by helping to select the 9 point hedonic scale used in the affective sensory tests. Two ......
Movement of walleye in an impounded reach of the Au Sable River, Michigan, USA
Springer Science and Business Media LLC - Tập 72 - Trang 455-463 - 2005
We estimated long-range spawning and foraging movements of walleye and observed their use of river and reservoir habitats between two large hydroelectric dams on the Au Sable River, Michigan. We used radiotelemetry to monitor seasonal and daily movements of 11 large walleye. Walleye ranged throughout the entire reach between the two dams. Eight of the 11 fish used both river and reservoir location......
Spatial, seasonal, and within-plant variation in total fatty acid content and composition in the brown seaweeds Dictyota bartayresii and Dictyopteris australis (Dictyotales, Phaeophyceae)
Springer Science and Business Media LLC - - 2014
We investigated the spatial, seasonal, and within-plant variation in total fatty acids (TFA) and fatty acid (FA) composition in the brown seaweeds Dictyota bartayresii sampled from Nelly Bay, Orpheus Island, and Kissing Point (Northern Queensland, Australia) and Dictyopteris australis sampled from Nelly Bay. Both species were present year round, but with no consistent seasonal pattern in plant siz......
Sargassum bed restoration by transplantation of germlings grown under protective mesh cage
Springer Science and Business Media LLC - Tập 26 - Trang 505-509 - 2013
Studies on the construction of artificial seaweed beds were carried out for the restoration of barren grounds that extend along the coast of Jeju Island in Korea. Fertilized eggs of Sargassum fulvellum and Sargassum horneri were induced from receptacles of mature plants and adhered to concrete block substrata. When the germlings that settled on the artificial substrata had grown to 3–5 mm in indoo......
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