Results 41 to 50 of about 1,656 (187)

From fresh water to the slope: fish community ecology in the Río de la Plata and the sea beyond [PDF]

open access: yes, 2010
The spatial pattern of fish assemblages and its relationship with factors along an environment gradient, from fresh to marine water environment along the Río de la Plata estuary (36ºS, 56ºW) the shelf and part of the slope, was examined using data from ...
García, Mirta L.   +2 more
core   +5 more sources

Dinoflagellates Amyloodinium and Ichthyodinium (Dinophyceae), parasites of marine fishes in the South Atlantic Ocean [PDF]

open access: yes, 2018
Author Posting. © The Author(s), 2018. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution.
Gast, Rebecca J., Gómez, Fernando
core   +1 more source

Sex‐biased survival contributes to population decline in a long‐lived seabird, the Magellanic Penguin

open access: yesEcological Applications, Volume 29, Issue 1, January 2019., 2019
Abstract We developed a Hidden Markov mark–recapture model (R package marked) to examine sex‐specific demography in Magellanic Penguins (Spheniscus magellanicus). Our model was based on 33 yr of resightings at Punta Tombo, Argentina, where we banded ~44,000 chicks from 1983 to 2010.
N. J. Gownaris, P. D. Boersma
wiley   +1 more source

Histological Features of the Gastrointestinal Tract of Wild Indonesian Shortfin Eel, Anguilla bicolor bicolor (McClelland, 1844), Captured in Peninsular Malaysia

open access: yesThe Scientific World Journal, Volume 2014, Issue 1, 2014., 2014
This study was conducted to record the histological features of the gastrointestinal tract of wild Indonesian shortfin eel, Anguilla bicolor bicolor (McClelland, 1844), captured in Peninsular Malaysia. The gastrointestinal tract was segmented into the oesophagus, stomach, and intestine.
Nurrul Shaqinah Nasruddin   +6 more
wiley   +1 more source

RNA/DNA and derived condition indices for anchovy and hake larvae as relevant information for comprehensive fisheries management

open access: yesScientia Marina, 2022
The nutritional condition of anchovy and Argentine hake larvae in the Northern Patagonian Frontal System (NPFS) area was studied in the austral spring of 2018. We hypothesized that this area provides adequate features for larval growth and survival. The
Marina V. Diaz   +3 more
doaj   +1 more source

Spatiotemporal distribution and population biology aspects of Cetengraulis edentulus (Actinopterygii: Clupeiformes: Engraulidae) in a South-western Atlantic estuary, with notes on the local Clupeiformes community: Conservation implications [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2020
Background. Guanabara Bay is a species-rich estuary in the South-western Atlantic and its shores are among the most densely populated urban areas in the world. The biology of clupeiform fishes from Guanabara Bay is currently poorly known.
S.R. Santos   +4 more
doaj   +3 more sources

Comparative Histomorphological and Histochemical Studies on the Oesophagus of Nile Tilapia Oreochromis niloticus and African Catfish Clarias gariepinus

open access: yesJournal of Histology, Volume 2014, Issue 1, 2014., 2014
The present work aimed to describe and compare both gross and microscopic structure of the oesophagus of Nile tilapia (Oreochromis niloticus) and African catfish (Clarias gariepinus). For this purpose, 60 specimens of oesophagus of Nile tilapia (omnivorous fish) and African catfish (carnivorous fish) were collected and processed.
Ashraf Sayed Awaad   +3 more
wiley   +1 more source

Acoustic target strength (TS) of argentine anchovy (Engraulis anchoita): the nighttime scattering layer [PDF]

open access: yesICES Journal of Marine Science, 2016
Engraulis anchoita is a physostomous fish with a dual chambered swimbladder (sb). In situ target strength (TS) measurements on this species are only possible at night, when anchovies disperse forming a scattering layer near the sea surface. A survey data series comprising more than 50000 single target detections, recorded from 1995 to 2008, was ...
Madirolas, Adrian Osvaldo   +6 more
openaire   +2 more sources

Comparison of the effects of two bongo net mesh sizes on the estimation of abundance and size of Engraulidae eggs

open access: yesBrazilian Journal of Oceanography, 2015
Studies of ichthyoplankton retention by nets of different mesh sizes are important because they help in choosing a sampler when planning collection and the establishment of correction factors.
Jana Menegassi del Favero   +3 more
doaj   +1 more source

Length–weight relations of 70 fish species (Actinopterygii) from tropical coastal region of Pernambuco, Northeast Brazil [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2016
The presently reported study provides length–weight relations (LWR) of 70 fish species (Actinopterygii) from the tropical coastal region of Pernambuco, Northeast Brazil: Achirus declivis, Achirus lineatus, Anchoa spinifer, Anchoa tricolor ...
A.P. Viana   +6 more
doaj   +3 more sources

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