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ALLOMETRIC GROWTH OF MALE SECONDARY SEXUAL CHARACTERS AND DIOECY IN PARAPANDALUS NARVAL (DECAPODA: PANDALIDAE)

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ABSTRACT Secondary sexual characters of the first two pleopods of male and female Parapandalus narval are described and compared to those of other pandalids. Whereas morphology does not deviate from other pandalids in females, males differ from temperate pandalids regarding endopod form of pleopod 1 and the copulatory organ. As evidenced by morphometric measures, the species does not participate in sex reversal. In contrast, the shape of the endopod of the male pleopod 1 remains the same, whereas the appendix masculina grows with positive allometry, not degenerating, as male size increases. Consequently, P. narval conforms to the reproductive pattern of tropical pandalids, in which dioecy occurs.

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/content/journals/10.1163/193724089x00610
1989-01-01
2016-12-11

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