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首页> 外文期刊>Brazilian Archives of Biology and Technology >Relative growth of the mangrove crab Ucides cordatus (Linnaeus, 1763) (Crustacea, Brachyura, Ocypodidae) at Iguape, S?o Paulo, Brazil
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Relative growth of the mangrove crab Ucides cordatus (Linnaeus, 1763) (Crustacea, Brachyura, Ocypodidae) at Iguape, S?o Paulo, Brazil

机译：巴西圣保罗伊瓜普的美洲红树蟹Ucides cordatus（Linnaeus，1763）（甲壳纲，Brachyura，Ocypodidae）的相对生长

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摘要

A total of 2,130 individuals of Ucides cordatus (1,255 males and 875 females) were captured in a mangrove forest at Iguape, S?o Paulo, Brazil. For each crab, the following body structures were measured: carapace (width = CW; length = CL; depth = CD), 5th abdominal somite (AW), major chelar propodus (length = PL; width = PW; depth = PD), and 1st and 2nd gonopod pairs (length = GL1 and GL2). The Student "t" and Snedecor "F" tests were used to verify any changes in growth allometric rates during ontogeny. The relationships CLxCW, PLxCW (for both sexes), GL1xCW and GL2xCW (males) and AWxCW (females), showed a better fit by two equations for the juvenile and adult phases (p<0.01). The inflexion point size between regression lines, indicated by each morphometric relationship, allowed to propose four morphotypes for U. cordatus. Males were classified in juvenile (CW < 32 mm), pre-puberty (32 < CW < 51 mm), sub-adult (51 < CW < 59 mm) and adult (CW > 59 mm). Females showed a similar size interval: (juvenile CW < 39 mm, pre-puberty 39 < CW < 53 mm, sub-adult 53 < CW < 58 mm, adult CW > 58 mm).
机译：在巴西圣保罗的伊瓜皮的红树林中，总共捕获了2130头Ucides cordatus个体（雄性1,255例，雌性875例）。对于每只螃蟹，都测量了以下身体结构：甲壳（宽度= CW;长度= CL;深度= CD），第5腹腹螨（AW），主要螯足（长度= PL;宽度= PW;深度= PD），和第一和第二个脚足类对（长度= GL1和GL2）。学生“ t”和Snedecor“ F”测试用于验证个体发育期间生长异速生长速率的任何变化。 CLxCW，PLxCW（男女两性），GL1xCW和GL2xCW（男性）和AWxCW（女性）之间的关系通过两个方程式分别显示出对青少年和成人阶段的更好拟合（p <0.01）。回归线之间的拐点大小（由每个形态计量关系指示）允许为脐带藻提出四种形态型。男性分为青少年（CW <32 mm），青春期前（32 59 mm）。雌性显示相似的大小区间：（青少年CW <39毫米，青春期前39 58毫米）。

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