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Edição Especial - Engenharia de Pesca - Uema

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Rev. Bras. Eng. <strong>Pesca</strong> 3[esp], Coletânea <strong>de</strong> Trabalhos da I SENEP<br />

ALOMETRIA DO GUAIAMUM, Cardisoma guanhumi LATREILLE, 1828 (DECAPODA,<br />

GECARCINIDAE) NO ESTUÁRIO DO RIO JAGUARIBE, CEARÁ, BRASIL<br />

ALOMETRY OF LAND CRAB, Cardisoma guanhumi LATREILLE, 1828 (DECAPODA: GECARCINIDAE) FROM<br />

JAGUARIBE RIVER ESTUARY, CEARÁ STATE, BRASIL<br />

Renata Akemi SHINOZAKI-MENDES 1,2 *; Jones SANTANDER-NETO 1 ; Fábio H. V. HAZIN 2 e<br />

José Roberto F. SILVA 1<br />

1<br />

Laboratório <strong>de</strong> Histologia Animal, Universida<strong>de</strong> Fe<strong>de</strong>ral do Ceará.<br />

2<br />

Laboratório <strong>de</strong> Oceanografia Pesqueira, Universida<strong>de</strong> Fe<strong>de</strong>ral Rural <strong>de</strong> Pernambuco.<br />

*E-mail: renataasm@gmail.com<br />

Resumo - No presente trabalho, a largura do cefalotórax (LC), o comprimento do maior quelípodo<br />

(CQ), nos machos, e a largura do 5º segmento abdominal (L 5 ), nas fêmeas, <strong>de</strong> 334<br />

indivíduos <strong>de</strong> Cardisoma guanhumi, capturados no estuário do Rio Jaguaribe, Ceará,<br />

Brasil, entre Dez./06 e Nov./07, foram mensurados. O tamanho da muda puberal foi<br />

<strong>de</strong>terminado através do ponto <strong>de</strong> inflexão da curva na relação LC x CQ e LC x L 5 . A<br />

largura do cefalotórax em que ocorre a muda puberal, foi igual a 7,10 cm, nos machos, e<br />

6,20 cm, nas fêmeas. Foram obtidas as seguintes relações, para juvenis e adultos,<br />

respectivamente, dos machos: CQ = 0,0747 LC 2,2826 e CQ = 0,5148LC 1,3055 ; e das<br />

fêmeas: L 5 = 0,0839LC 2,5744 e L 5 = 0,6666LC 2,0554 .<br />

Palavras-chaves: guaiamum, alometria, manguezal, caranguejo terrestre, muda puberal.<br />

Abstract - In the present study, the width of the cephalothorax (LC), the length of the largest<br />

chelipod (CQ), for males, and the length of the 5 th abdominal segment, for females, were<br />

measured from 334 specimes of Cardisoma guanhumi, caught from Dec./06 to Nov./07,<br />

in the Jaguaribe River Estuary, Ceara State, Brazil. The size of pubertal molting was<br />

<strong>de</strong>termined through the inflection point of the relation LC x CQ and LC x L 5 . The width<br />

of the cephalothorax in which the pubertal molting occurs was equal to 7.1 cm, for males,<br />

and 6.20 cm, for females. The following equations were obtained, for juvenile and adult<br />

specimens, respectively, for males: CQ= 0.0747 LC 2, 2826 and CQ = 0.5148 LC 1, 3055 , and<br />

for females: L 5 = 0,0839LC 2,5744 and L 5 = 0,6666LC 2,0554 .<br />

Key-words: guaiamum, alometry, mangrove, land crab, puberal molting.<br />

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