Results 261 to 270 of about 21,191 (303)
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Distribution and abundance of juvenile Loligo gahi in Falkland Island waters
Marine Biology, 1994Four research surveys of Falkland Island waters were carried out to determine the distribution and abundance of the early life-history stages of Loligo gahi (d'Orbigny, 1835) in the austral winter of 1988 and the austral springs of 1990, 1991 and 1992. Juveniles were caught during three of the four surveys in both Bongo nets and an RMT8 net.
Hatfield, E. M. C., Rodhouse, P. G.
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Food abundance affects both morphology and behaviour of juvenile perch
Ecology of Freshwater Fish, 2007Abstract – Behaviour and morphology were both shown to differ between 1+ perch from two lakes that in earlier studies showed differences in size‐specific predation risk. As the level of nourishment is known to affect behaviour and morphology, we fed perch of the two lakes in tanks for 40 days with two food levels, to study whether observed differences
J. Borcherding, C. Magnhagen
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Hydrobiologia, 2003 Juveniles of the tube-dwelling polychaete L. conchilega were found attached to adult tubes at an exposed beachin South Wales (U.K.). They attached to the upper part of tubes protruding above the sediment.
Ruth Callaway
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Predictive substratum modelling for juvenile gadoid distribution and abundance
2015No abstracts are to be cited without prior reference to the author.Successful spatial management of species and their habitats requires a good understanding of their distribution. Coastal areas are proposed to be of particular importance for juvenile demersal fish recruitment.
Elliott, Sophie. A. M. +4 more
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Abundance and Recruitment of Juvenile Atlantic Sturgeon in the Altamaha River, Georgia
Transactions of the American Fisheries Society, 2010AbstractJuvenile Atlantic sturgeon Acipenser oxyrinchus remain in natal rivers for several years prior to out‐migrating to marine environments during later portions of their life history. Data regarding river‐resident juvenile population dynamics are unknown.
Paul Schueller, Douglas L. Peterson
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The Effects of Angling and Hatchery Trout on the Abundance of Juvenile Steelhead Trout
Transactions of the American Fisheries Society, 1973Abstract We assessed the effects of angling and planted trout on the abundance of wild juvenile steelhead trout in a rearing stream with underwater censusing of abundance and angling for steelhead in sections with and without planted trout. A large proportion of the juvenile steelhead were removed by angling.
Herbert A. Pollard, Ted C. Bjornn
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Influence of food abundance on competitive aggression in juvenile convict cichlids
Animal Behaviour, 2002Abstract Optimality models designed to explain the occurrence of feeding territoriality predict that the frequency or intensity of aggression will peak at intermediate levels of food abundance. To test whether this prediction applies to the competition for ephemeral patches of food, we manipulated food abundance over a broad range of values in two ...
James W.A. Grant +3 more
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Abundance, biomass and production of juvenile flatfish in southeastern kattegat
Netherlands Journal of Sea Research, 1989Abstract Abundance, biomass and production of juvenile 0- and 1-group flatfish were estimated at 1.5 to 11.0 m depth from May 1984 to May 1987 in southeastern Kattegat. Species studied were: Plaice, Pleuronectes platessa (L.), sole, Solea solea (L.), dab, Limanda limanda (L.), turbot, Scophthalmus maximus (L.), brill, Scophthalmus rhombus (L.), and ...
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Influence of wetland hydroperiod on diversity and abundance of metamorphosing juvenile amphibians
Wetlands Ecology and Management, 1989Numbers of successfully metamorphosing juvenile amphibians were tabulated at three wetlands in South Carolina, U.S.A. using terrestrial drift fences with pitfall traps. A relatively undisturbed Carolina bay was studied for eight years, a partially drained Carolina bay for four years, and a man-made borrow pit for three years.
JosephH.K. Pechmann +3 more
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Impact of hydropeaking on the abundance of juvenile brown trout in a Pyrenean stream
Fundamental and Applied Limnology, 1999Many French rivers are concerned by hydropeaking management. Sudden flow variations cause disturbances of the aquatic environment, fish habitat being particularly affected. The abundance of the most sensitive life stages of brown trout (age groups 0+ and 1+) in the River Oriege (Pyrenees, France) were studied 330m upstream, and 700 and 3,000 m ...
Hervé Liebig +4 more
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