scholarly journals CARACTERIZACIÓN ESTACIONAL DE LA DIETA Y PERFIL DE ÁCIDOS GRASOS DE JUVENILES DE Paralichthys orbignyanus (Jenyns, 1842)

2021 ◽  
Vol 30 (2) ◽  
Keyword(s):  
Paralichthys Orbignyanus

scholarly journals Micobacteriose por Mycobacterium marinum em "linguado" Paralichthys orbignyanus e em "barber goby" Elacatinus figaro: diagnóstico histopatológico e imuno-histoquímico

2012 ◽  
Vol 32 (3) ◽  
pp. 254-258 ◽  
Author(s):  
Luis A. Romano ◽  
Luís A. Sampaio ◽  
Marcelo B. Tesser
Keyword(s):  
Rio Grande ◽  
Mycobacterium Marinum ◽  
Para Determinar ◽  
Paralichthys Orbignyanus

As micobacterioses afetam várias espécies de peixes, tanto comerciais como ornamentais. É uma enfermidade sistêmica com formação de granulomas, conhecida como micobacteriose de peixes. O desenvolvimento da aquicultura tem aumentado o número de casos com essa enfermidade que muitas vezes é de difícil diagnóstico. Neste trabalho apresentamos dois casos de micobacterioses em Paralichthys orbignyanus e Elacatinus figaro provenientes do Laboratório de Piscicultura Estuarina e Marinha da Universidade Federal do Rio Grande (FURG). As micobactérias de peixes possuem menos ácidos graxos que as de mamíferos, por isso foi utilizado o protocolo de coloração de Fite-Faraco, uma vez que o protocolo de coloração clássico de Ziehl Neelsen pode resultar em falsos negativos. Para determinar o tipo de micobactéria foi utilizada a imuno-histoquímica com a qual se pode diagnosticar a presença de Mycobacterium marinum. A enfermidade pode ser transmitida para o homem e com esse trabalho ressalta-se a necessidade de fazer o diagnóstico correto e implantar medidas de proteção para as pessoas que estão em contato com os peixes infectados.

scholarly journals NPY and sbGnRH gene expression in juvenile and adult male Brazilian flounder Paralichthys orbignyanus

2011 ◽  
Vol 41 (11) ◽  
pp. 1927-1930 ◽  
Author(s):  
Vinicius Farias Campos ◽  
Tiago Veiras Collares ◽  
Fabiana Kömmling Seixas ◽  
João Carlos Deschamps ◽  
Luis Fernando Fernandes Marins ◽  
...  
Keyword(s):  
Gene Expression ◽  
Rna Extraction ◽  
Sea Bream ◽  
Mrna Levels ◽  
Adult Males ◽  
Adult Fish ◽  
Cdna Synthesis ◽  
Hypothalamic Regulation ◽  
Measure Gene Expression ◽  
Paralichthys Orbignyanus

The objective of this study was to evaluate neuropeptide Y (NPY) and sea bream gonadotropin-release hormone (sbGnRH) gene expression in juvenile and adult males of Brazilian flounder. Hypothalamuses from fish were sampled for total RNA extraction. After cDNA synthesis, real-time PCR was used to measure gene expression. NPY showed approximately 2-fold increases in their mRNA levels while sbGnRH showed 3-fold increases in adult fish. These results suggest that these peptides could be involved on hypothalamic regulation of Brazilian flounder sexual maturation.

scholarly journals Brasilochondria riograndensis gen. nov., sp. nov. (Copepoda, Chondracanthidae) a parasite of flounders of Rio Grande do Sul State, Brazil

2004 ◽  
Vol 21 (3) ◽  
pp. 515-518 ◽  
Author(s):  
Vernon E. Thatcher ◽  
Joaber Pereira Júnior
Keyword(s):  
New Genus ◽  
Rio Grande ◽  
The Other ◽  
Rio Grande Do Sul ◽  
Spherical Head ◽  
Paralichthys Orbignyanus

Brasilochondria riograndensis gen. nov., sp. nov. (Copepoda, Chondracanthidae) a parasite of the flounder, Paralichthys orbignyanus (Valenciennes, 1839), is described. The new genus has a spherical head a post-mandibular "neck" and two pairs of modified biramous legs. In these respects, it resembles Argentinochondria patagonensis Etchegoin, Timi & Sardella, 2003. In the Argentine genus, however, the bulbous head has a medial constriction and the posterior of the female lacks the lateral extensions that are present in the new genus. Pseudolernentoma brasiliensis Luque & Alves, 2003, also resembles the new genus but it lacks the lateral extensions of the trunk and the latter is cylindrical rather than flat. The second leg of the new genus is small and the endopod is shorter than the exopod. The other two genera have large second legs with subequal rami.

Secondary Stress Responses in Juvenile Brazilian Flounder, Paralichthys orbignyanus , throughout and after Exposure to Sublethal Levels of Ammonia and Nitrite

2018 ◽  
Vol 50 (2) ◽  
pp. 346-358 ◽  
Author(s):  
Lucas C. Maltez ◽  
Luis A. L. Barbas ◽  
Marcelo H. Okamoto ◽  
Diogo L. de Alcantara Lopes ◽  
Luis A. Romano ◽  
...  
Keyword(s):  
Stress Responses ◽  
Secondary Stress ◽  
Paralichthys Orbignyanus

Acute toxicity and sublethal effects of nitrite on oxidative stress in early juvenile Brazilian flounder, Paralichthys orbignyanus

2021 ◽  
Author(s):  
Diego Henrique de Sousa Miranda ◽  
Lucas Campos Maltez ◽  
Marina Espírito Santo Campello ◽  
Joel Fitzgerald Linares Córdova ◽  
Ricardo Vieira Rodrigues ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Acute Toxicity ◽  
Sublethal Effects ◽  
Early Juvenile ◽  
Paralichthys Orbignyanus

Cryopreservation of Brazilian flounder (Paralichthys orbignyanus) sperm

Aquaculture ◽  
2008 ◽  
Vol 275 (1-4) ◽  
pp. 361-365 ◽  
Author(s):  
Carlos Frederico Ceccon Lanes ◽  
Marcelo Okamoto ◽  
Paulo Varoni Cavalcanti ◽  
Tiago Collares ◽  
Vinicius Farias Campos ◽  
...  
Keyword(s):  
Paralichthys Orbignyanus

scholarly journals Broodstock management and induced spawning of flounder Paralichthys orbignyanus (Valenciennes, 1839) under a closed recirculated system

2006 ◽  
Vol 41 (1) ◽  
Author(s):  
Gabriel A Bambill ◽  
Masakazu Oka ◽  
Mariela Radonic ◽  
Andrea V López ◽  
Mónica I Müller ◽  
...  
Keyword(s):  
Induced Spawning ◽  
Broodstock Management ◽  
Paralichthys Orbignyanus

Ammonia exposure and subsequent recovery trigger oxidative stress responses in juveniles of Brazilian flounder Paralichthys orbignyanus

2017 ◽  
Vol 43 (6) ◽  
pp. 1747-1759 ◽  
Author(s):  
Lucas Campos Maltez ◽  
Giovanna Rodrigues Stringhetta ◽  
Alain Danilo Enamorado ◽  
Marcelo Hideo Okamoto ◽  
Luis Alberto Romano ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Stress Responses ◽  
Subsequent Recovery ◽  
Oxidative Stress Responses ◽  
Ammonia Exposure ◽  
Paralichthys Orbignyanus

Effects of salinity on Brazilian flounder Paralichthys orbignyanus from fertilization to juvenile settlement

Aquaculture ◽  
2007 ◽  
Vol 262 (2-4) ◽  
pp. 340-346 ◽  
Author(s):  
Luís A. Sampaio ◽  
Luciano S. Freitas ◽  
Marcelo H. Okamoto ◽  
Luiz R. Louzada ◽  
Ricardo V. Rodrigues ◽  
...  
Keyword(s):  
Paralichthys Orbignyanus
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