نتایج جستجو برای: wolf herring fish

تعداد نتایج: 115057  

2005
KATJA ENBERG Anna Gårdmark Veijo Kaitala Jörgen Ripa Andrew P. Beckerman

Harvesting strategies in a fish stock dominated by low-frequency variability: The Norwegian spring-spawning herring (Clupea harengus). Marine Resource Economics 18: 263–274. Enberg, K. 2005. Benefits of threshold strategies coupled with age-selective harvesting in a highly variable fish stock: Norwegian spring-spawning herring (Clupea harengus) as an example. Marine Ecology Progress Series, in ...

2005
Tomas Didrikas

Fisheries agencies around the Baltic Sea use hydroacoustics to assess stock sizes of herring and sprat. These assessments rely on the assumption that the acoustic properties of Baltic clupeids are the same as North Sea herring. This may lead to biased results, as system-specific differences in salinity and fish fat content may influence acoustic target strength. The acoustic properties of the B...

2010
Michele Casini Valerio Bartolino Juan Carlos Molinero Georgs Kornilovs

How multiple stressors influence fish stock dynamics is a crucial question in ecology in general and in fisheries science in particular. Using time-series covering a 30 yr period, we show that the body growth of the central Baltic Sea herring Clupea harengus, both in terms of condition and weight-at-age (WAA), has shifted from being mainly driven by hydro-climatic forces to an interspecific den...

Journal: :Nature 1879

Journal: :Proceedings. Biological sciences 2004
Ben Wilson Robert S Batty Lawrence M Dill

The commercial importance of Pacific and Atlantic herring (Clupea pallasii and Clupea harengus) has ensured that much of their biology has received attention. However, their sound production remains poorly studied. We describe the sounds made by captive wild-caught herring. Pacific herring produce distinctive bursts of pulses, termed Fast Repetitive Tick (FRT) sounds. These trains of broadband ...

2011
Jake L. Gregg Johanna J. Vollenweider Courtney A. Grady Ron A. Heintz Paul K. Hershberger

The effects of temperature and infection by Ichthyophonus were examined in juvenile Pacific herring (Clupea pallasii) maintained under simulated overwinter fasting conditions. In addition to defining parameters for a herring bioenergetics model (discussed in Vollenweider et al. this issue), these experiments provided new insights into factors influencing the infectivity and virulence of the par...

Journal: :IJAGR 2015
Thomas F. Thornton Harvey Kitka

This paper uses GIS and spatiotemporal analysis of a historically and culturally modified marine ecosystem to evaluate Pacific herring abundance, declines, vulnerabilities, and future prospects, about which a Native Tribe and state fisheries managers disagree. In 2008, the Sitka Tribe of Alaska (STA) requested that an area within its traditional waters be closed to commercial sac roe fishing to...

2018
Noel Tenyang Bernard Tiencheu Hilaire Macaire Womeni

Changes in lipids of herring (Clupea harengus) muscle during different smoking methods and 9 days of refrigeration at 4°C were investigated. The proximate analysis of raw herring revealed that the total lipid, the total protein content and the crude ash were 10.20%, 69.43%, and 19.42%, respectively. The results also indicated that during all processing free fatty acids (FFAs) and peroxide value...

2000
Jung-Hee Cho

Herring is an important stock as bait for lobster fisheries and a component of the food web of the Northwest Atlantic Ocean. However, herring is very vulnerable to environmental variables such as temperature, food supply, and to the type of sediment on the bottom floor. Egg and larval stage herring are hypothesized to be very sensitive to low temperatures. This paper will analyze the correlatio...

Journal: :Photochemistry and photobiology 2010
Michael T Arts Howard I Browman Ilmari E Jokinen Anne Berit Skiftesvik

The effect of UV radiation (UVR) on juvenile Atlantic salmon (Salmo salar) was assessed by measuring the fatty acid (FA) profiles of muscle, dorsal and ventral skin, and ocular tissues following 4-month long exposures to four different UVR treatments in outdoor rearing tanks. Fish were fed two different diets (Anchovy- and Herring-oil based) that differed in polyunsaturated fatty acid (PUFA) co...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید