Effects of diel-cycling hypoxia and acidification on juvenile weakfish Cynoscion regalis growth, survival, and activity

2017 ◽  
Vol 564 ◽  
pp. 163-174 ◽  
Author(s):  
DM Lifavi ◽  
TE Targett ◽  
PA Grecay
Keyword(s):  
Cynoscion Regalis

Structure and innervation of the swim bladder musculature in the weakfish, Cynoscion regalis (Teleostei: Sciaenidae)

1982 ◽  
Vol 60 (8) ◽  
pp. 1955-1967 ◽  
Author(s):  
R. Dana Ono ◽  
Stuart G. Poss
Keyword(s):  
Sarcoplasmic Reticulum ◽  
Muscle Fiber ◽  
Muscle Fibers ◽  
Postsynaptic Membrane ◽  
Motor Endplate ◽  
Central Core ◽  
Swim Bladder ◽  
Motor Endplates ◽  
Cynoscion Regalis

The striated swim bladder muscles of the weakfish Cynoscion regalis are deep red in color but cannot be classified histologically as having typical red fibers. The muscle fibers are homogeneous and average 29.6 ± 5.3 μm in diameter, one-fifth the diameter of the adjacent hypaxialis fibers. Each muscle fiber contains thin, ribbonlike myofibrils which are radially arranged around a central core of mitochondria, glycogen, and sarcoplasmic reticulum. Myofibrils are extremely regular in pattern. Triads occur at the Z line. Numerous mitochondria and muscle nuclei are located at the periphery of each muscle fiber. The muscle fibers are multiply innervated with motor endplates distributed along their entire lengths. Well-developed folding of the postsynaptic membrane, not previously reported in fishes, is present at the motor endplate.

scholarly journals What’s for Dinner? Assessing the Value of an Edible Invasive Species and Outreach Actions to Promote Its Consumption

2021 ◽  
Author(s):  
Inês Cerveira ◽  
Vânia Baptista ◽  
Maria Alexandra Teodósio ◽  
Pedro Morais
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Aquatic Invasive Species ◽  
Native Range ◽  
Invasive Fish ◽  
Press Releases ◽  
Cynoscion Regalis ◽  
The Public ◽  
Native Resources ◽  
A New Species

Abstract Promoting the consumption of edible aquatic invasive species has gained popularity to minimize its impacts while easing pressure on native resources. Weakfish Cynoscion regalis (Bloch & Schneider, 1801) is one of the most recent invasive fish species in the Iberian Peninsula (Europe) which once sustained an important fishery in the native range (Northwest Atlantic Ocean). Portugal ranks third in the list of the world’s top fish consumers, so promoting a weakfish fishery could at least help minimize the impacts upon native species, since weakfish have innate traits that are likely appreciated by Portuguese fish consumers. However, introducing a new species to consumers is challenging owing to consumers’ habits and unfamiliarity with the species. So, we aimed to (i) evaluate the acceptance of weakfish by a panel of Portuguese fish consumers and (ii) create outreach actions – partnerships with local Chefs and press releases – to explain to a broader public what invasive species are and promote the consumption of edible aquatic invasive species. The survey that we conducted to Portuguese fish consumers showed that weakfish has great chances of being well accepted by the public – 90% of consumers would buy weakfish because they appreciated its appearance, flavour, and texture, besides being a wild fish. The outreach actions reached a few million people because 46 online articles were published, and three news pieces broadcasted on national television. Overall, our strategy greatly increased the public’s awareness about invasive species, which can be replicated elsewhere in the world.

Attenuation of Microbial Growth on Modified Atmosphere-Packaged Fish

1983 ◽  
Vol 46 (7) ◽  
pp. 610-613 ◽  
Author(s):  
R. J. H. GRAY ◽  
D. G. HOOVER ◽  
A. M. MUIR
Keyword(s):  
Vibrio Parahaemolyticus ◽  
Clostridium Botulinum ◽  
Microbial Growth ◽  
Lag Phase ◽  
Logarithmic Phase ◽  
Modified Atmosphere ◽  
Pomatomus Saltatrix ◽  
Salmonella Spp ◽  
Cynoscion Regalis ◽  
Positive Evidence

Four species of fish from Atlantic waters, Meronia americanus (perch), Cynoscion regalis (seatrout), Micropogon undulatis (croaker) and Pomatomus saltatrix (bluefish), were processed (gutted or filleted), packaged under carbon dioxide and refrigerated. Stability of the fish under the modified atmosphere preservation (MAP) system was compared to that of fish stored conventionally. Use of the MAP system resulted in a 45 to 55% increase in stability, primarily due to an extension in the lag phase of psychrotrophic organisms and to their reduced growth rate in the logarithmic phase. By the 10th day of storage, the conventionally packed fish always exhibited a 100-fold higher psychrotroph count than the CO2-packed fish. Levels of Vibrio parahaemolyticus were negligible in this MAP system and no Salmonella spp. or Staphylococcus aureus was detected, even at an abuse temperature (10°C) of storage. Positive evidence for preformed Clostridium botulinum toxin was lacking.

Records of Uncommon and Unusual Fishes from Eastern Canadian Waters, 1950–1958

1959 ◽  
Vol 16 (4) ◽  
pp. 503-514 ◽  
Author(s):  
A. H. Leim ◽  
L. R. Day
Keyword(s):  
Tautogolabrus Adspersus ◽  
Cynoscion Regalis ◽  
Acipenser Brevirostrum ◽  
Large Size

Records of fishes rare in Canada, and unusual occurrences of commoner ones, are presented for 65 species. First Canadian records are given for the short-nosed sturgeon (Acipenser brevirostrum), halfbeak (Hyporhamphus unifasciatus), four spot flounder (Paralichthys oblongus), weakflsh (Cynoscion regalis) and striped sea robin (Prionotus evolvans). Specimens of unusually large size include a cunner (Tautogolabrus adspersus) of 171/4 inches and 31/4 lb, and a redfish (Sebastes marinus) of 311/2 inches and 231/2 lb.

Epizootic Nocardia infection in cultured weakfish, Cynoscion regalis (Bloch and Schneider)

2011 ◽  
Vol 34 (7) ◽  
pp. 567-571 ◽  
Author(s):  
E R Cornwell ◽  
M J Cinelli ◽  
D M McIntosh ◽  
G S Blank ◽  
G A Wooster ◽  
...  
Keyword(s):  
Cynoscion Regalis

Effects of varying irradiance on feeding in larval weakfish (Cynoscion regalis)

1994 ◽  
Vol 180 (2) ◽  
pp. 151-163 ◽  
Author(s):  
Victoria Pryor Connaughton ◽  
Charles E. Epifanio ◽  
Raymond Thomas
Keyword(s):  
Cynoscion Regalis
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