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Functional Morphology and Diversity$
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Les Watling and Martin Thiel

Print publication date: 2013

Print ISBN-13: 9780195398038

Published to Oxford Scholarship Online: May 2015

DOI: 10.1093/acprof:osobl/9780195398038.001.0001

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Antennules and Antennae in the Crustacea

Antennules and Antennae in the Crustacea

(p.199) 7 Antennules and Antennae in the Crustacea
Functional Morphology and Diversity

Geoff Boxshall

Damià Jaume

Oxford University Press

The remarkable diversity in form and function of the antennules and antennae of crustaceans is reviewed. The basic form of the crustacean antennule is a single-axis segmented limb, but in malacostracans it is typically biflagellate, and in remipedes it comprises a dorsal segmented axis and ventral flagellum. The form of the antenna is also compared across the major crustacean taxa. The distribution patterns of chemosensors, mechanosensors, and bimodal elements along the antennules are compared across major taxa. The structure of selected sensors is briefly described, and their roles in feeding, mating, and predator detection behavior are discussed. The balance among the different functional roles performed by antennules and antennae changes during development. The ontogenetic development of both limbs is briefly reviewed. The enhancement of the chemosensory array on the antennules of males as they attain sexual maturity is found to be common to many different crustacean groups.

Keywords:   crustacean antennae, antennules, single-axis segmented limb, malacostracans, remipedes

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