Results 21 to 30 of about 685 (174)

Studies on feeding stimulants for jack mackerel - II. Identification of feeding stimulant in the krill extract for jack mackerel.

open access: yesNIPPON SUISAN GAKKAISHI, 1988
In order to obtain further information on the feeding stimulant for the jack mackerel Trachurus japonicus, a series of feeding test were conducted using the purified casein basal diets flavored with the synthetic extract containing major groups stimulating those of a krill extract.
Ikeda, Itaru   +3 more
openaire   +1 more source

Preliminary results of the empirical validation of daily increments in otoliths of jack mackerel Trachurus symmetricus murphyi (Nichols, 1920) marked with oxytetracycline

open access: yesScientia Marina, 2003
The frequency of microincrement formation in sagittae otoliths of jack mackerel Trachurus symmetricus was validated using experiments on captive fish. Adult jack mackerel were injected with a dose of 100 mg of oxytetracycline/kg of fish.
Miguel Araya   +2 more
doaj   +1 more source

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.
Mauricio Lima   +7 more
doaj   +1 more source

Causes of mortality in young jack mackerel

open access: yesMarine Ecology Progress Series, 1985
Field and laboratory experiments were conducted with the purpose of partitioning jack mackerel Trachurus symmetricus larval mortality into portions due to starvation and to predation. Field collections were made to determine larval condition, growth, net retention and production; laboratory experiments were conducted to determine growth and body ...
RP Hewitt, GH Theilacker, NCH Lo
openaire   +1 more source

Studies on feeding stimulants for jack mackerel - I. Identification of feeding stimulant for jack mackerel in its muscle extract.

open access: yesNIPPON SUISAN GAKKAISHI, 1988
The present investigation was conducted to identify the feeding stimulants for jack mackerel Trachurus japonicus by a bioassay method using the synthetic extract, based upon analysis of jack mackerel muscle. The purified casein basal diet flavored with the synthetic extract was readily ingested by the jack mackerel, but the unflavored diet was not ...
Ikeda, Itaru   +3 more
openaire   +2 more sources

First Record of Anisakis sp. Third-Stage Larvae (Nematoda) Occurrence, as a Human Risk, in Pacific Jack Mackerel from a Fish Processing and Packaging Plant in the North of Iran

open access: yesJournal of BioScience and Biotechnology, 2023
Purpose: This research was performed with the aim of hygienic tracking for fish-borne parasitic contamination imported by Jack mackerel fish from certain parts of the world in a fish processing unit during a health inspection in the northern region of ...
Mehrdad Asgharnia   +2 more
doaj  

BACTERIAL FORMATION OF HISTAMINE IN JACK MACKEREL (TRACHURUS SYMMETRICUS)

open access: yesJournal of Food Processing and Preservation, 2004
Peak histamine concentrations of 0.023, 0.031 and 0.027 g histamine/ 100 g muscle and maximal bacteria concentrations of 1.75, 1.59 and 0.423 g dry cells/100 g muscle were observed in muscles of jack mackerel stored at 25, 15 and 5C, respectively. Incubated fish homogenates suggest rate and transport limitations in histamine formation in muscle.
Bermejo, A   +3 more
openaire   +3 more sources

Biometry, Distribution and Genetic Characterization of Blue Jack Mackerel Trachurus picturatus (Bowdich, 1825), a Rare Pelagic Fish Species in the Adriatic Sea

open access: yesDiversity, 2020
The blue jack mackerel Trachurus picturatus (Bowdich, 1825) specimens (N = 155) were collected during the MEDITS survey, done along the eastern side, precisely, of the Croatian fishing ground in July 2018.
Barbara Zorica   +7 more
doaj   +1 more source

Target-strength measurements of hake and jack mackerel [PDF]

open access: yesICES Journal of Marine Science, 1996
Target-strength (TS) measurements of dispersed shoals of jack mackerel (Trachurus symmetricus murphyi Nichols), Chilean hake (Merluccius gayi Guichenot), and southern hake (Merluccius australis Hutton) were made using a 38 kHz split-beam echo-sounder. TS and length distributions were obtained from night hauls taken with midwater and bottom trawls.
openaire   +1 more source

Studies on Feeding Stimulants for Jack Mackerel-III. Feeding Stimulant Activity of Nucleotides, Tryptophan, and Their Related Compounds for Jack Mackerel.

open access: yesNIPPON SUISAN GAKKAISHI, 1991
The feeding stimulant activities of nucleotides-related and tryptophan-related componunds were tested on young jack mackerel Trachurus japonicus at concentrations of 1 and 5 mmol/100g dry diet, respectively. Effective doses of inosine 5'-monophosphate (IMP) and L-tryptophan (Trp) added to the diet on feeding activity were also examined. Of 33 compounds
Ikeda, Itaru   +3 more
openaire   +2 more sources

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