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Comparative morphology of the first zoea of twelve brachyuran species (Crustacea: Decapoda) from the Amazon region Rev. Bras. Zool.
Souza,Adelson S. de; Costa,Rauquírio M. da; Abrunhosa,Fernando A..
The laboratory-hatched first zoeal stage of twelve brachyuran species collected in the estuarine area of the Caeté River in the Amazonian region are described and illustrated in the present study: P. americanus Saussure, 1857, Eurytium limosum (Say, 1818), Sesarma curacaoense De Man, 1892, S. rectum Randall, 1840, Armases rubripes (Rathbun, 1897), Aratus pisonii (H. Milne Edwards, 1837), Ocypode quadrata (Fabricius, 1787), Uca rapax (Smith, 1870), U. maracoani (Latreille, 1802), U. thayeri Rathbun, 1900, Ucides cordatus (Linnaeus, 1763) and Pachygrapsus gracilis (Saussure, 1858). Through intraspecific comparisons of the respective larval stage, an identification key was generated and provided. Most of the studied species presented morphological differences...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Decapod crabs; Identification; Larval morphology; Zooplankton.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000300004
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Occurrence of Cymbasoma longispinosum Bourne, 1890 (Copepoda: Monstrilloida) in the Curuçá River estuary (Amazon Littoral) Anais da ABC (AABC)
Leite,Natália R.; Pereira,Luci C.C.; Abrunhosa,Fernando; Pires,Marcus A.B.; Costa,Rauquírio M. da.
The present work was carried out to verify the occurrence and distribution of Cymbasoma longispinosum Bourne, 1890 in a tropical Amazon estuary from North Brazil. Samplings were performed bimonthly from July/2003 to July/2004 at two different transects (Muriá and Curuçá rivers) situated along the Curuçá estuary (Pará, North Brazil). Samples were collected during neap tides via gentle (1 to 1.5 knots) 200 μm-mesh net tows from a small boat. Additional subsurface water samples were collected for the determination of environmental parameters. Males and females of Cymbasoma longispinosum were only observed during September and November/2003. The highest number of organisms was found in September/2003 at the Muriá River transect. The presence of C....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon region; Monstrilloida; New occurrence; Tropical estuary.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300005
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Seasonal variation in the copepod community structure from a tropical Amazon estuary, Northern Brazil Anais da ABC (AABC)
Magalhães,André; Leite,Natália da R.; Silva,João G.S.; Pereira,Luci C.C.; Costa,Rauquírio M. da.
The main purpose of this study was to investigate the seasonal variation of copepod community structure during the months of July, September and November 2003 (dry season) and January, March and May 2004 (rainy season) in the Curuçá estuary, northern Brazil. Samples were collected during neap tides via gentle 200µm mesh net tows from a small powerboat. Measurements of surface water conductivity were accomplished in situ using an electronic conductivimeter and salinity was later obtained through the transformation of the conductivity values. Salinity varied seasonally from 7.2 ± 0.1 to 39.2 ± 1.8 (mean ± standard deviation) and was influenced mainly by differences in the amount of rainfall between the studied sampling seasons. In total, 30 Copepoda taxa...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Copepod; Salinity; Ecological indexes; Seasonal changes; Brazil.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000200005
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Seasonal effects of wastewater to the water quality of the Caeté river estuary, Brazilian Amazon Anais da ABC (AABC)
Pereira,Luci C.C.; Monteiro,Marcela C.; Guimarães,Danielly O.; Matos,Jislene B.; Costa,Rauquírio M. da.
Bragança's socioeconomic situation is highly dependent on estuarine and marine biological resources that are influenced by tidal cycles and climatology. Field measurements (hydrological, hydrodynamic and microbiological variables) were taken in the most urbanized zone from Caeté estuary to characterise the quality of the local environment. During the dry period, the estuary was more eutrophic and presented the highest temperature (30.5 °C in Oct./06), salinity (17 psu in Feb./07), pH (8.24 in Feb./07) and fecal coliform (> 1000 MPN/100 ml in Dec./06 and Feb./07) values. The phytoplankton Cyclotella meneghiniana, Coscinodiscus centralis and other r-strategist species were observed. The lack of basic hydric canalization was responsible for the local...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Equatorial estuary; Temporal variation; Eutrophication; Northern Brazil.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200022
Registros recuperados: 4
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