ABSTRACT
A new open access database, Brazilian Marine Biodiversity (BaMBa) (https://marinebiodiversity.lncc.br), was developed in order to maintain large datasets from the Brazilian marine environment. Essentially, any environmental information can be added to BaMBa. Certified datasets obtained from integrated holistic studies, comprising physical-chemical parameters, -omics, microbiology, benthic and fish surveys can be deposited in the new database, enabling scientific, industrial and governmental policies and actions to be undertaken on marine resources. There is a significant number of databases, however BaMBa is the only integrated database resource both supported by a government initiative and exclusive for marine data. BaMBa is linked to the Information System on Brazilian Biodiversity (SiBBr, http://www.sibbr.gov.br/) and will offer opportunities for improved governance of marine resources and scientists' integration. Database URL: http://marinebiodiversity.lncc.br.
Subject(s)
Aquatic Organisms , Biota/physiology , Databases, Factual , Animals , Aquatic Organisms/classification , Aquatic Organisms/physiology , BrazilABSTRACT
The aim of the study was to investigate the bioecology of the common snook Centropomus undecimalis captured in the so-called Salina lagoon, at the mangrove coast of Pará State, to determine its populational biology in conjunction to environmental conditions and variations. Samples and measurements were carried out monthly along an year using a gillnet and analyzed in terms of populational structure, including length/weight measurements and their relationships, recruitment period, condition factor and gonodal stage. Environmental parameters, especially water quality, were monitored and correlated with biological data. 344 specimens were captured and their length ranged from 3.4 to 29.6 cm, within a weight range from 0.4 to 209.31 g. Histological analysis revealed that the captured specimens were immature males. The species presented a negative alometric growth, based on weight-length relationship (WT = 0.00088 LT 2.94). The time distribution showed that the common snook is on recruitment during March, May, September/2007 and January/2008. The relative condition factor values indicate that in general the specimens presented good nutritional condition, with exception of October. Among the analyzed environmental aspects, only salinity, pH and conductivity presented substantial seasonal variations as well as extreme values. However, common snook presented a good development, proving its ecological plasticity. Furthermore, the results show that Salina lagoon is an important ecosystem to the species life-history, working as nursery area.(AU)
O objetivo deste estudo foi investigar a bioecologia do robalo-flexa, Centropomus undecimalis, capturado na lagoa Salina, nordeste do Pará, no intuito de determinar a biologia populacional da espécie, associada às condições ambientais às quais está exposta. Mensalmente, ao longo de um ano, exemplares de robalo-flexa foram capturados com rede de emalhar e então determinados a estrutura populacional em comprimento e peso, a relação peso-comprimento, o período de recrutamento, o fator de condição relativo e o estádio gonadal. Variáveis abióticas da água foram monitoradas e correlacionadas aos dados biológicos de 344 exemplares, cujo comprimento e peso total variaram de 3,4 a 29,6 cm e de 0,4 a 209,31 g, respectivamente. O robalo-flexa apresentou crescimento alométrico negativo, obtido pela relação peso-comprimento (PT = 0,00088 CT 2,94). A distribuição mensal do comprimento total demonstrou que o recrutamento do robalo-flexa na lagoa ocorreu nos meses de março, maio e setembro/2007 e janeiro/2008. Os indivíduos analisados eram machos imaturos. Os valores do fator de condição relativo indicaram que o robalo-flexa apresentou boa condição nutricional, exceto em outubro. A salinidade, condutividade e pH apresentaram variação sazonal, bem como valores extremos. Porém, o robalo-flexa apresentou bom desenvolvimento, comprovando a plasticidade ecológica da espécie. A lagoa Salina é um ecossistema importante no ciclo de vida do robalo-flexa, pois funciona como área de berçário.(AU)
Subject(s)
Animals , Perciformes , Ecological and Environmental Phenomena , Water Quality , Body Weights and Measures , Seasons , BrazilABSTRACT
The aim of the study was to investigate the bioecology of the common snook Centropomus undecimalis captured in the so-called Salina lagoon, at the mangrove coast of Pará State, to determine its populational biology in conjunction to environmental conditions and variations. Samples and measurements were carried out monthly along an year using a gillnet and analyzed in terms of populational structure, including length/weight measurements and their relationships, recruitment period, condition factor and gonodal stage. Environmental parameters, especially water quality, were monitored and correlated with biological data. 344 specimens were captured and their length ranged from 3.4 to 29.6 cm, within a weight range from 0.4 to 209.31 g. Histological analysis revealed that the captured specimens were immature males. The species presented a negative alometric growth, based on weight-length relationship (WT = 0.00088 LT 2.94). The time distribution showed that the common snook is on recruitment during March, May, September/2007 and January/2008. The relative condition factor values indicate that in general the specimens presented good nutritional condition, with exception of October. Among the analyzed environmental aspects, only salinity, pH and conductivity presented substantial seasonal variations as well as extreme values. However, common snook presented a good development, proving its ecological plasticity. Furthermore, the results show that Salina lagoon is an important ecosystem to the species life-history, working as nursery area.
O objetivo deste estudo foi investigar a bioecologia do robalo-flexa, Centropomus undecimalis, capturado na lagoa Salina, nordeste do Pará, no intuito de determinar a biologia populacional da espécie, associada às condições ambientais às quais está exposta. Mensalmente, ao longo de um ano, exemplares de robalo-flexa foram capturados com rede de emalhar e então determinados a estrutura populacional em comprimento e peso, a relação peso-comprimento, o período de recrutamento, o fator de condição relativo e o estádio gonadal. Variáveis abióticas da água foram monitoradas e correlacionadas aos dados biológicos de 344 exemplares, cujo comprimento e peso total variaram de 3,4 a 29,6 cm e de 0,4 a 209,31 g, respectivamente. O robalo-flexa apresentou crescimento alométrico negativo, obtido pela relação peso-comprimento (PT = 0,00088 CT 2,94). A distribuição mensal do comprimento total demonstrou que o recrutamento do robalo-flexa na lagoa ocorreu nos meses de março, maio e setembro/2007 e janeiro/2008. Os indivíduos analisados eram machos imaturos. Os valores do fator de condição relativo indicaram que o robalo-flexa apresentou boa condição nutricional, exceto em outubro. A salinidade, condutividade e pH apresentaram variação sazonal, bem como valores extremos. Porém, o robalo-flexa apresentou bom desenvolvimento, comprovando a plasticidade ecológica da espécie. A lagoa Salina é um ecossistema importante no ciclo de vida do robalo-flexa, pois funciona como área de berçário.