V
Vera Maria Fonseca de Almeida-Val
Researcher at Amazon.com
Publications - 121
Citations - 3110
Vera Maria Fonseca de Almeida-Val is an academic researcher from Amazon.com. The author has contributed to research in topics: Astronotus & Tambaqui. The author has an hindex of 28, co-authored 117 publications receiving 2688 citations. Previous affiliations of Vera Maria Fonseca de Almeida-Val include University of Miami & National Institute of Amazonian Research.
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Journal ArticleDOI
Fish and aquatic habitat conservation in South America: a continental overview with emphasis on neotropical systems
Mário Barletta,Andrés Javier Jaureguizar,Claudio Baigún,Nelson Ferreira Fontoura,Angelo Antonio Agostinho,Vera Maria Fonseca de Almeida-Val,Adalberto Luis Val,Rodrigo A. Torres,L. F. Jimenes-Segura,Tommaso Giarrizzo,Nidia Noemi Fabré,Vandick da Silva Batista,Carlos A. Lasso,Donald C. Taphorn,Monica F. Costa,P. T. Chaves,João Paes Vieira,M. F. M. Corrêa +17 more
TL;DR: In this review, the main river basins of South America, together with key aquatic habitats (mangrove-fringed estuaries of the tropical humid, tropical semi-arid and subtropical regions) are analysed in terms of their characteristics and main concerns.
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Hypoxia tolerance of Amazon fish Respirometry and energy metabolism of the cichlid Astronotus Ocellatus
TL;DR: A. ocellatus was found to be hypoxia tolerant; it survives more than 16 h of severe hypoxiosis (pO 2 ≤ 0.4 mg l −1 ) and even 4 h of complete anoxia at 28°C.
Journal ArticleDOI
Scaling effects on hypoxia tolerance in the Amazon fish Astronotus ocellatus (Perciformes: Cichlidae): contribution of tissue enzyme levels.
Vera Maria Fonseca de Almeida-Val,Adalberto Luis Val,W. Duncan,F.C.A Souza,M.N Paula-Silva,Stephen C. Land +5 more
TL;DR: It is interesting to explore the fact that hypoxia survivorship increases due to combining effects of suppressing metabolic rates and increasing anaerobic power as fish grow, and this is the first description of scaling effects on Hypoxia tolerance.
Journal ArticleDOI
Tribute to R. G. Boutilier: the effect of size on the physiological and behavioural responses of oscar, Astronotus ocellatus, to hypoxia.
Katherine A. Sloman,Chris M. Wood,Graham R. Scott,Sylvia L. R. Wood,Makiko Kajimura,Ora E. Johannsson,Vera Maria Fonseca de Almeida-Val,Adalberto Luis Val +7 more
TL;DR: Shelter from predators appears particularly important for juveniles, who may accept a greater physiological compromise in exchange for safety, in response to hypoxia without available shelter.
Journal ArticleDOI
Metabolic adjustments in two Amazonian cichlids exposed to hypoxia and anoxia
A.R. Chippari-Gomes,Levy de Carvalho Gomes,Norberto Peporine Lopes,Adalberto Luis Val,Vera Maria Fonseca de Almeida-Val +4 more
TL;DR: It is concluded that these animals are good anaerobes and highly adapted to their environment, which is allowed by their abilities to regulate metabolic pathways and adjust their enzyme levels.