Maciel Cristiana R, Quadros Manoel L, Abrunhosa Fernando, Bastos Sandra, Schneider Horacio, Sampaio Iracilda
Instituto de Estudos Costeiros, Universidade Federal do Pará, Bragança, PA, Brasil.
An Acad Bras Cienc. 2011 Jun;83(2):533-44. doi: 10.1590/s0001-37652011000200013.
The freshwater prawn Macrobrachium equidens, which is native species of the Indo-Pacific Region, was recorded for the first time on the Amazon coast of Brazil. This species was found to inhabit the same environment as two native Macrobrachium species, M. amazonicum and M. acanthurus, and is morphologically very similar to the latter. The identification of the species was confirmed by the genetic analysis of sequences of the mitochondrial Cytochrome Oxidase (COI) gene. A detailed description of the morphological features and reproductive biology of M. equidens in this new environment is presented.
淡水虾类罗氏沼虾是印度-太平洋地区的本土物种，首次在巴西的亚马逊海岸被记录到。该物种被发现与两种本土沼虾物种，即亚马逊沼虾和尖刺沼虾栖息在相同环境中，并且在形态上与后者非常相似。通过对线粒体细胞色素氧化酶（COI）基因序列的遗传分析，确认了该物种的身份。本文还对罗氏沼虾在这一新环境中的形态特征和生殖生物学进行了详细描述。
