Results 11 to 20 of about 3,693 (163)

Histological and electrophysiological properties of crypt cells from the olfactory epithelium of the marine teleostTrachurus symmetricus

open access: yesThe Journal of Comparative Neurology, 2006
Crypt cells from the olfactory epithelium of the Pacific jack mackerel Trachurus symmetricus were characterized by light and electron microscopy and analyzed in dissociation with the patch-clamp technique in its cell-attached, perforated patch and normal whole-cell mode.
O. Schmachtenberg
openaire   +5 more sources

Interaction between southern sea lions Otaria flavescens and jack mackerel Trachurus symmetricus commercial fishery off Central Chile: a geostatistical approach [PDF]

open access: yesMarine Ecology Progress Series, 2004
A spatial description of the operational interaction between southern sea lions and jack mackerel fishing fleet off Central Chile is presented. The descriptive analysis showed a similar spatial trend for the number of sea lions per haul and catch per haul, both increasing in the SE direction, and decreasing in the NW direction.
LA Hückstädt, MC Krautz
openaire   +2 more sources

Behaviour of the southern sea lion (Otaria flavescens) and consumption of the catch during purse-seining for jack mackerel (Trachurus symmetricus) off central Chile [PDF]

open access: yesICES Journal of Marine Science, 2003
AbstractThe fishery for jack mackerel (Trachurus symmetricus) off central Chile competes for the resource with southern sea lions (Otaria flavescens), and during purse-seining makes the fish more accessible to the pinnipeds. Interactions with sea lions were recorded during 31 purse-seine sets off central Chile during October 1999.
L.A Hückstädt, T Antezana
openaire   +2 more sources

GROWTH AND CHARACTERIZATION OF THE HISTAMINE-FORMING BACTERIA OF JACK MACKEREL (TRACHURUS SYMMETRICUS)

open access: yesJournal of Food Processing and Preservation, 2003
Consumption of fish with high histamine poses health hazards. The isolation, identification and viable counts of the histamine-forming bacteria from jack mackerel in batch cultures in trypticase soy broth with 2% histidine at 25, 15 and 5C were performed.
Bermejo, A   +3 more
openaire   +4 more sources

Edad y crecimiento del Jurel Trachurus symmetricus murphyi (NICHOLS, 1920) en aguas de Chile central.

open access: yesBiologia Pesquera
Age determinations íbr jack mackerel (Trachurus symmetricus murphyi Nichols, 1920) using otoliths were made for fish collecled in 1983 and 1984 from the Talcahuano fishery area, Chile. No significant differences were deiected in length increase between males and females as function of otolith size (P = 0,05). An isomeiric relaiionship between mean fork
Gonzalo Castillo, Alberto Arrizaga
openaire   +2 more sources

Análisis de las tasas de captura de jurel (Trachurus symmetricus) en la zona centro-sur de Chile (1987-1999) [PDF]

open access: yesInvestigaciones marinas, 2002
Catch per unit effort (CPUE) data from the jack mackerel fishery operating in central-south Chile and covering the period 1987-1999 are analyzed in order to detect changes in relative abundance. Two units for fishing effort were used to compute the catch rate: number of days outside port and the number of trips with capture. The fleet was classified in
Gatica, Claudio, Cubillos, Luis
openaire   +3 more sources

Isópodos parásitos como indicadores poblacionales del jurel Trachurus symmetricus murphyi (NICHOLS, 1920) (PISCES: CARANGIDAE) frente a las costas de Chile.

open access: yesBiologia Pesquera
Se indagó si los isópodos Ceratothoa spp. Dana 1853, que habitan en la cavidad bucal y cámara branquial del jurel Trachurus symmetricus murphyi (Nichols, 1920), podrían servir como indicadores poblacionaies de su hospedador. Para esto, entre enero y octubre de 1990 se obtuvo 801 ejemplares de Ceratothoa spp.
Marcela Aldana   +2 more
openaire   +2 more sources

The jack mackerel (Trachurus symmetricus) resource of the eastern North Pacific [PDF]

open access: yes, 1967
The jack mackerel before 1947, was of minor commercial importance having to take a back seat to the better known, more profitable, and more abundant Pacific sardine (Sardinops caeruleus) and the more desirable Pacificmackerel (Scomber japonicus). During these years it was referred to as "horse mackerel" and had relatively little market appeal.
Blunt, C.E., Jr.
openaire   +3 more sources

Genetic study of populations of two species of genus <i>Trachurus: T. lathami and T. symmetricus</i>

open access: yesJournal of Renewable Natural Resources
We conducted a population genetics study of two species of the genus Trachurus: T. symmetricus and T. lathami by analyzing the genetic structure of each species. This was performed by enzymes and mitochondrial DNA electrophoresis in starch, polyacrylamide and agarose respectively to establish the degree of relationship between species. The results show
Carlos Muñoz   +2 more
openaire   +2 more sources

Observation Bias in Metabarcoding. [PDF]

open access: yesMol Ecol Resour
ABSTRACT DNA metabarcoding is subject to observation bias associated with PCR and sequencing, which can result in observed read proportions differing from actual species proportions in the DNA extract. Here, we amplify and sequence a mock community of known composition containing marine fishes and cetaceans using four different primer sets and a ...
Shaffer MR   +5 more
europepmc   +2 more sources

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