Results 11 to 20 of about 658 (173)

The Interaction Between Stock Dynamics, Fishing and Climate Caused the Collapse of the Jack Mackerel Stock at Humboldt Current Ecosystem

open access: yesFrontiers in Marine Science, 2020
The collapse of marine fisheries had caused a cascade of ecological, social and economic consequences. Recognizing the complex nature of the fisheries collapses is essential for understanding the impact of human activities on natural systems.
Rodrigo Wiff   +2 more
exaly   +3 more sources

Reproductive aspects of Jack mackerel Trachurus murphy

open access: yesRevista Peruana de Biología, 2013
The time series of monthly gonadosomatic index (GSI) and biannual size at first maturity of Jack mackerel Trachurus murphyiNichols 1920 in Peru between 1967 and 2012 is analyzed and discussed.
Ángel Perea   +3 more
doaj   +3 more sources

Temporal and Spatial Population Genetic Variation in Chilean Jack Mackerel (Trachurus murphyi) [PDF]

open access: yesBiology
Trachurus murphyi have been studied for population genetic structures for decades, identifying only one large population across the South Pacific Ocean. Although all of these studies have extensively examined the spatial genetic pattern, there remains a ...
Cristian B. Canales-Aguirre   +2 more
doaj   +2 more sources

The Jack mackerel Trachurus murphyiand the environmental macro-scale variables

open access: yesRevista Peruana de Biología, 2013
This paper analyses information on various macro environmental variables available since 1876 for the Southeast Pacific and more recent data on Jack mackerel Trachurus murphyi (Nichols, 1920) landings and biomass in the Peruvian sea, relating them to ...
Marco Espino
doaj   +3 more sources

Inclusion Impact of Jack Mackerel Meal in the Red Sea Bream (Pagrus major) Feeds Replacing Various Animal Protein Sources for Fish Meal [PDF]

open access: yesAquaculture Nutrition
This study aims to elucidate manipulation impacts of jack mackerel meal (JMM) in the red sea bream (Pagrus major) feeds replacing various animal protein sources for different levels of fish meal (FM) on growth and feed availability.
Tae Woong Kwon   +2 more
doaj   +2 more sources

Fishing status of jack mackerel fishery in the southeastern Pacific Ocean [PDF]

open access: yesJournal of the Korean Society of Fisheries Technology, 2010
To investigate the catches of jack mackerel fishery, a series of fishing experiments was conducted in the high seas of the southeastern Pacific Ocean () during the period of 9 August to 18 December, 2003 by commercial fishing vessel and research vessel. The number of 205 tows fishing was carried out in the southeastern Pacific Ocean.
Doo Nam Kim   +2 more
exaly   +2 more sources

Effects of Dietary Inclusion of a Crude Protein Source Exhibiting the Strongest Attractiveness to Red Sea Bream (Pagrus major) on Growth, Feed Availability, and Economic Efficiency [PDF]

open access: yesAnimals
Dietary incorporation of an attractive feed protein source is a practical method of enhancing feed intake and consequently improving the growth of fish.
Seong Il Baek, Sung Hwoan Cho
doaj   +2 more sources

Accuracy of the Kirchhoff-approximation and Kirchhoff-ray-mode fish swimbladder acoustic scattering models. [PDF]

open access: yesPLoS ONE, 2013
The acoustic backscatter from pressure release prolate spheroids and a three-dimensional representation of a fish swimbladder (Chilean jack mackerel, Trachurus symmetricus murphyi) was calculated using four target strength models (Kirchhoff-approximation,
Gavin J Macaulay   +4 more
doaj   +1 more source

Effects of Biotic and Abiotic Factors on the Spatiotemporal Distribution of Round Scad (Decapterus maruadsi) in the Hainan Island Offshore Area

open access: yesDiversity, 2023
Fishery resource and environmental data from four surveys conducted in the Hainan Island offshore area from March 2021 to June 2022 were used to investigate the spatiotemporal distribution of round scad (Decapterus maruadsi). A generalized additive model
Liangming Wang   +5 more
doaj   +1 more source

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