ESTIMATIVA DA ABUNDÂNCIA E ESTRUTURA DA POPULAÇÃO DE PORTUNIDAE, (CRUSTACEA: DECAPODA) EM UM ESTUÁRIO DA COSTA NORTE DO BRASIL.
2015
Alessandra Batista Bentes | Luciano Pereira | Janaína Pereira | Pablo Cruz | Cleide Marques | Bianca Bentes
Portugués. <!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:TargetScreenSize>800x600</o:TargetScreenSize> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal" style="margin-bottom: .0001pt; text-align: justify; line-height: normal;"><span style="font-size: 12.0pt; font-family: ";Times New Roman";,";serif";; color: black;">No estado do Pará, pelo menos 11 espécies de siris da família Portunidae já foram registradas. No estuário Taperaçu (Bragança–Pará) destacam-se Callinectes danae (Smith, 1969) e Callinectes bocourti (A. Milne Edwards, 1879) regionalmente conhecidos como “siri azul” e “siri vermelho”. Para este estudo foram realizadas amostragens bimensais no período de março/2010 a julho/2011 com auxílio de quatro redes de espera e uma de arrasto. No laboratório os siris foram medidos, pesados e sexados, e para análise de dados foram utilizados os programas StatSoft® 7.0 e Microsoft Office Excel 2010. Foram capturados um total de 86 indivíduos de C. bocourti e C.danae</em>, sendo 39 fêmeas (57,35%) e 29 machos de C. bocourti (42,65%), 6 fêmeas (33,33%)<span style="mso-spacerun: yes;"> e 12 machos (66,67%) de C. danae</em>. Os valores de biomassa de espécies agrupadas apresentaram significância estatística relevante entre os meses de amostragem (F= 6.796 e p<0,01), assim como as classes de biomassa testadas entre meses (F= 6,597 e p<0,01) e entre espécies (F= 9,419 e p<0,003). Os machos de ambas as espécimes apresentam crescimento mais expressivo que as fêmeas, entretanto estas atingem maiores tamanhos. A proporção sexual não variou entre as 11 classes de comprimento testadas, sendo aceita a hipótese de 1:1. C. bocourti apresentou maior abundância em relação à C. danae sendo mais evidente no período chuvoso onde a salinidade é menor.</span> <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:EnableOpenTypeKerning /> <w:DontFlipMirrorIndents /> <w:OverrideTableStyleHps /> </w:Compatibility> 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