Results 11 to 20 of about 13,695 (175)

Otolith phenotypic variability of the blue jack mackerel, Trachurus picturatus, from the Canary Islands (NE Atlantic): Implications in its population dynamic [PDF]

Fisheries Research, 2019
Studies have described the presence of different population units of blue jack mackerel, Trachurus picturatus, in the NE Atlantic region. However, the hypothesis of several populations has been subtly questioned due to the high similarity in the otolith shape among some regions.
Víctor Manuel Tuset, Alba Jurado-Ruzafa, José Luis Otero-Ferrer, María Teresa G. Santamaría   +3 more
openaire   +5 more sources

The use of parasites as biological tags for stock identification of blue jack mackerel, Trachurus picturatus, in the North-eastern Atlantic

Fisheries Research, 2017
The use of parasites as biological tags for discriminating stocks of blue jack mackerel, Trachurus picturatus (Osteichthyes, Carangidae), in the northeast Atlantic Ocean is assessed herein. In this study the following parasites have been selected as possible biological tags: Anisakis spp. (Nematoda: Anisakidae), Rhadinorhynchus sp.
Vasconcelos, Joana, Hermida, Margarida, Saraiva, Aurélia, González, José Antonio, Gordo, Leonel   +4 more
openaire   +6 more sources

Landmark-based geometric morphometrics analysis of body shape variation among populations of the blue jack mackerel, Trachurus picturatus, from the North-East Atlantic

Journal of Sea Research, 2020
Phenotypic variation in fish can indicate exposure to different environmental conditions, affecting species growth and maturation rates and/or be a consequence of genetic factors that allow fish adaptation to different environments. Understanding population structure and dynamics is extremely important for the establishment of sustainable fisheries ...
Moreira, Cláudia, Froufe, Elsa, Vaz-Pires, Paulo, Triay Portella, Raül, Correia, Alberto Teodorico   +4 more
openaire   +4 more sources

Use of Citizen Science to Determine Prey Partitioning Between Two Coastal Raptors. [PDF]

Ecol Evol
In Australia, Eastern Osprey (Pandion haliaetus cristatus) and White‐bellied Sea‐Eagle (Haliaeetus leucogaster) occupy the same ecological niche and are suspected of partitioning prey resources. This study investigated this through evaluating the breadth, overlap and partitioning of diets recorded from social media posts.
Biggs L, Baxter GS, Debus SJS, Finch N, Riggs A, Houweling H, Appleby M, Murray PJ.   +7 more
europepmc   +2 more sources

Assessment of a Social Media-Based Method for Determining Raptor Diet. [PDF]

Ecol Evol
This study mined social media as a citizen science method to reduce the time burden and biases associated with recording accurate diet information for predators. In total, 1985 prey observations were recorded of two Australian coastal raptors and were used to produce diet profiles that were compared by region, social media platform, and against other ...
Biggs L, Baxter GS, Debus SJS, Finch N, Riggs A, Houweling H, Appleby M, Murray PJ.   +7 more
europepmc   +2 more sources

Negative impact on the reproductive potential of blue jack mackerel Trachurus picturatus by Kudoa infection of the ovary [PDF]

Diseases of Aquatic Organisms, 2020
Reproduction of Trachurus picturatus off the western Portuguese coast was studied over 1 yr. During histological analyses, the presence of Kudoa sp. was detected in advanced vitellogenic oocytes. Kudoa infections are known to cause economic loss through the induction of post-mortem liquefaction of fish muscles, but ovarian infection as reported in this
Neves, A., Gordo, I., Sequeira, V., Vieira, A.R., Silva, E., Silva, F., Duarte, A.M., Mendes, S., Ganhão, R., Peleteiro, M.C., Assis, C., Rebelo, R., Magalhães, M.F., Gil, M. M., Gordo, L.S.   +14 more
openaire   +4 more sources

PRESERVATION OF BLUE-JACK MACKEREL (TRACHURUS PICTURATUS BOWDICH) SILAGE BY CHEMICAL AND FERMENTATIVE ACIDIFICATION

Journal of Food Processing and Preservation, 2007
We compared acidified and lactic acid fermented silage approaches for the preservation of blue-jack mackerel. Silages acidified with formic and propionic acids had stable pH (3.8) and low (19 mg/g N) levels of volatile nitrogen compounds (total volatile basic nitrogen, TVBN), but relatively high (82 g/100 g) final non-protein-nitrogen (NPN) values. The
Enes Dapkevicius, M.L.N., Nout, M.J.R., Rombouts, F.M., Houben, J.H.   +3 more
openaire   +4 more sources

Preliminary data on Trachurus picturatus (Bowdich 1825) phylogeography inferred from mitochondrial DNA sequence data

Frontiers in Marine Science, 2015
The populations of marine pelagic fishes, in particular the migratory ones as the Trachurus picturatus (Bowdich 1825), may be erroneously considered an homogenous population unit because they show broad geographic distributions, large population sizes ...
Cláudia Filipa Moreira, Alberto Teodorico Correia   +1 more
doaj   +1 more source

The current state of fish market in Ukraine

Ukrainian Journal of Veterinary and Agricultural Sciences, 2019
The fishing industry is an important component of the economy of Ukraine at the present stage of development. The development and implementation of the innovative technologies in fish farming and fish processing require mandatory and ongoing analysis of ...
M. I. Burgaz, T. I. Matvienko, K. I. Bezik, O. M. Soborova   +3 more
doaj   +1 more source

Stock assessment of the blue jack mackerel, Trachurus picturatus, in the North‐eastern Atlantic

Fisheries Management and Ecology, 2018
AbstractA total of 49,151 blue jack mackerel, Trachurus picturatus, (Bowdich) was collected in Madeira Island (North‐eastern Atlantic) between 2002 and 2016 to evaluate possible influence of fishing on landings and reproductive parameters. A decreasing trend in the length composition was observed over the study period and length at first maturity ...
Vasconcelos, Joana, Sousa, Ricardo, Riera, Rodrigo, Delgado, João, Faria, Graça, Serrano Gordo, Leonel   +5 more
openaire   +4 more sources