ESTIMATIVA DA ABUNDÂNCIA E ESTRUTURA DA POPULAÇÃO DE PORTUNIDAE, (CRUSTACEA: DECAPODA) EM UM ESTUÁRIO DA COSTA NORTE DO BRASIL.

portugais. <!--[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. 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