Cypris


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cypris

[′sī·prəs]
(invertebrate zoology)
An ostracod-like, free-swimming larval stage in the development of Cirripedia.

Cypris

 

the final larval stage of development of cirripede crustaceans (barnacles). The cypris has a bivalve shell that covers the entire body; the shell resembles that of representatives of the subclass Ostracoda, particularly species of the genus Cypris. It has a median eye, two pairs of antennae, one pair of mandibles, two pairs of maxillae, and six pairs of thoracic legs. The abdomen is reduced. The cypris swims in the water and then descends to the bottom, attaching itself by the first pair of antennae to the substrate, where it is transformed into an adult. The antennae become reduced, and the shell fold is converted to a mantle, in which the skeletal plates characteristic of adult cirripedes are formed. In parasitic cirripedes the cypris undergoes regressive metamorphosis.

References in periodicals archive ?
Surface structures and sense organs of the cypris larva of Balanus balanoides as seen by scanning and transmission electron microscopy.
The cypris, which looks like a swimming bivalve, spends all its time moving about in search of a suitable attachment site.
Influence of substratum heterogeneity and settled barnacle density on the settlement of cypris larvae.
To our knowledge the present study is the first to use scanning electron microscopy to quantify variation in the entire structure of the cypris antennule.
In his prayer to the god, Pelops reminds him of the "loving gifts of Cypris" ([phrase omitted], 75) and calls upon the bonds of [phrase omitted], of gratitude and goodwill (75).
Fountainea nessus Latr., Morpho theseus pacificus Kgr., Mesosemia pacifica Stich., etc.), en tanto, otras, son exclusivas de las areas encanonadas donde se presenta el bosque humedo tropical y no parecen subir mas arriba de los 1000 msnm (Morpho cypris chrysonicus Fruhst, Agrias amydon ssp., Annagrapha aureola Bat., Syrmatia aethiops Stgr., Arcas delphia Nic., Phareas coelesteDbl.
Characterisation of the bacteria associated with barnacle, Balonus amphitrite, shell and their role in gregarious settlement of cypris larvae.
The constant cultural theme is "Cypris the beguiling," she "who crushes with desire" (Iph.
?1776 Cypris vidua Muller - Muller in Meisch 2000: 372-378, Figs.
After hatching, the larvae go through a number of developmental stages culminating in cypris larvae (cyprids), which have to settle (attach) to a surface in order to complete the lifecycle.