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
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]
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
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]
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]
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]
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
The Jack mackerel Trachurus murphyin Peru
Jorge Csirke
doaj +3 more sources
Accuracy of the Kirchhoff-approximation and Kirchhoff-ray-mode fish swimbladder acoustic scattering models. [PDF]
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
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

