Relative growth of the second pereiopod in Macrobrachium olfersi (Wiegmann, 1836) (Decapoda, Palaemonidae)

Mossolin EC; Bueno SLS

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Relative growth of the second pereiopod in Macrobrachium olfersi (Wiegmann, 1836) (Decapoda, Palaemonidae)

机译：第二种脚足类动物的相对生长（威格曼，1836年）（十足纲，十足目）

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The heterochelous condition of the second pair of pereiopods in both male and female Macrobrachium olfersi from Sao Sebastiao, Brazil, was investigated by means of quantitative analysis. A positive allometric growth of the propodus (length and height) was observed for males and females, either juveniles or adults. The differential growth of both minor and major propodus is already initiated in the juvenile stage and proceeds towards adulthood without a distinct critical moult, and finally takes its full development in large adults, being especially more pronounced in large males. The differential growth of the larger second claw eventually leads to the development of the well known sexual dimorphism that characterizes this species. No preferential handedness, i.e., left or right, was discernible in either sex.

机译：采用定量分析的方法，研究了巴西圣塞巴斯蒂昂市雌性Macrobrachium olfersi雌雄对虾中第二对脚足类的异质性。不论是少年还是成年的雄性和雌性，都观察到足底的异形生长（长度和高度）为正。幼年和主要后足的差异生长已经在幼年期开始，并在没有明显的关键蜕变的情况下成年，并最终在大型成虫中完全发育，在大型雄性中尤为明显。较大的第二爪的不同生长最终导致表征该物种的众所周知的性二态性的发展。男女两性都没有明显的惯用右手性。

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《CRUSTACEANA》 |2003年第3期|共14页
作者
Mossolin EC; Bueno SLS;
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原文格式 PDF
正文语种 eng
中图分类动物学;
关键词
Sp-n; Shrimp; Brazil;

机译：Sp-n;虾;巴西;

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1. Relative growth of the second pereiopod in Macrobrachium olfersi (Wiegmann, 1836) (Decapoda, Palaemonidae) [J] . Mossolin EC, Bueno SLS CRUSTACEANA . 2003,第3期

机译：第二种脚足类动物的相对生长（威格曼，1836年）（十足纲，十足目）
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Relative growth of the second pereiopod in Macrobrachium olfersi (Wiegmann, 1836) (Decapoda, Palaemonidae)

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