Results 111 to 120 of about 298,344 (279)

Effects of temperature and browning on the functional response of a freshwater top predator

Journal of Animal Ecology, EarlyView.
This study explores for the first time how temperature and browning affect the functional response of a freshwater piscivore, the northern pike. The authors find surprisingly weak effects of browning, challenging visual foraging theory. Pike displayed a rare dome‐shaped functional response in cold clear water, potentially driven by seasonal changes in ...
Viktor Nilsson‐Örtman, Erik Nilsson, Christer Brönmark   +2 more
wiley   +1 more source

Season and human footprint weaken the negative effect of temperature on the intraspecific metabolic scaling exponent of wild brown trout populations

Journal of Animal Ecology, EarlyView.
We apply a new parameterized model through linking metabolic scaling and the maximum entropy theory of ecology to quantify the intraspecific metabolic scaling exponent of brown trout populations and assess the main drivers shaping the exponent. Abstract Metabolic scaling fundamentally sets the pace of life in almost all organisms.
Meng Xu, Ignasi Arranz
wiley   +1 more source

The phylogenetic position of Brown trout (Salmo trutta L. 1758) in the Jajrud River using D-Loop sequence

یافته‌های نوین در علوم زیستی, 2016
In this study phylogenetic relationship of the Jajrud River Brown trout Salmo trutta L. 1758 in the Namak Lake basin was analyzed using complete D-Loop sequence of the mitochondrial genome, compared to other Iranian populations of the species.
Qaffar Khosravani asl, Iraj Hashemzade Sagharloo, Esmaeel Pirali, Asghar Abdoli   +3 more
doaj  

Recolonisation d'un cours d'eau corse dévasté : contribution respective des truites sauvages et domestiques

Knowledge and Management of Aquatic Ecosystems, 1995
L'Abatesco, petite rivière côtière au centre-est de la Corse, a subi en septembre 1989 une crue dévastatrice. Dans le lit principal, la perturbation de l'habitat et de la végétation rivulaire a entraîné une destruction quasi totale de la faune benthique ...
BEAUDOU D., BARIL D., ROCHÉ B., LE BARON M., CATTANEO-BERREBI G., BERREBI P.   +5 more
doaj   +1 more source

Eden Fisheries Advisory Committee 14th January, 1975 [PDF]

, 1975
This is the report from the Eden Fisheries Advisory Committee meeting, which was held on the 14th January, 1975. It covers information on the proposed regional fishing licence duties, and the report of the Working Party on future regional hatchery ...

core  

A new acoustic telemetry tag that identifies carrier mortality by monitoring activity level

Methods in Ecology and Evolution, EarlyView.
Abstract We present a new acoustic telemetry tag capable of detecting whether its carrier stops moving for long enough to presume the organism has died, and of reporting the time elapsed since movement ceased. The tag uses existing environmental sensor technology together with an algorithm with user‐specifiable thresholds, and importantly, can separate
Karl P. Phillips, David H. Roth, Dale Webber, Richard Sawler, Jeremy Kuehner, Ainsley Hilliard, Mario Theriault, Tommi Linnansaari   +7 more
wiley   +1 more source

The effect of probiotic‑enriched feed on aquaculture‑biological parameters of rainbow trout Oncorhynchus mykiss (Walbaum, 1792) during early ontogeny

Siberian Journal of Life Sciences and Agriculture
Background.  The issues of increasing productivity in various sectors of agriculture, especially the aquaculture sector, are currently a priority for many research teams in Russia and other countries.
Dmitry V. Rudoy, Anastasia V. Olshevskaya, Viktoria N. Shevchenko, Tatyana A. Maltseva, Denis A. Kozyrev, Maria S. Mazanko   +5 more
doaj   +1 more source

EFFECTS OF FREEZING ON IMPEDANCE OF RAINBOW TROUT (Oncorhynchus mykiss) [PDF]

Croatian Journal of Fisheries, 2011
The aim was to examine the electrical characteristics of rainbow trout (Oncorhynchus mykiss) fillets subjected to different freezing methods. Resistance (R) and reactance (X) were measured in the range from 1 Hz to 1MHz on 100 samples and recorded data ...
Sanja Vidaček, Tibor Janči, Nives Marušić, Tomislav Petrak, Tatjana Vnučec, Helga Medić   +5 more
doaj  

Modulation of the effectiveness of 17-alpha-hydroxy-20-beta-dihydroprogesterone or of a gonadotrophic extract on the in vitro intrafollicular maturation of oocytes of the rainbow trout Salmo gairdnerii by various non-maturing steroids [Translation from: Compte Rendu Hebdomadaire des Seances de l'Academie des Sciences, Paris, Series D 281, 811-814, 1975] [PDF]

, 1980
The effectiveness of 17 α-hydroxy-20 β-dihydroprogesterone (17 α-20 β Pg) or of a trout hypophyseal gonadotrophic extract on the in vitro intrafollicular maturation of trout oocytes can be modulated by steroids which do not have a direct maturing effect;
Jalabert, B.
core  

Integrating Sr isotopes, microchemistry, and genetics to reconstruct Salmonidae species and life history

Archaeometry, EarlyView.
Abstract Recent approaches to fisheries research emphasize the importance of the coproduction of knowledge in building resilient and culturally mindful fisheries management frameworks. Despite widespread recognition of the need for Indigenous knowledge and historical reference points as baseline data, archaeological data are rarely included in ...
Ross Salerno, Remi Murdoch, Joanna Elmore, Taylor Wilcox, Jens Hegg, Catherine S. Austin, Michael LeMoine, Jade Luckhurst, Alexandra K. Fraik, Molly Carney   +9 more
wiley   +1 more source