chalimus
(Subclass Copepoda):
One of up to four stages in copepodid phase of development of caligid-like parasitic copepods; the chalimus usually is attached to the host, often by a frontal filament held by maxilla 2. The first chalimus is molted from the first copepodid stage; the four chalimus stages correspond to the second to fifth copepodid stages [Ferrari and Dahms, in press].
(Subclass Copepoda):
The post-copepodid developmental stage of most siphonostomatoid fish parasites, characterised by possession of a frontal filament for attachment to the host [Boxshall and Halsey, 2004].

Crustacea glossary. . 2011.

Look at other dictionaries:

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  • secondary bud — (Subclass Copepoda): A small, poorly differentiated limb which has been reconfigured from a limb bud or a transformed limb of a copepodid; a seconday bud usually is found on a chalimus (see bud and transformed limb) [Ferrari and Dahms, in press] …   Crustacea glossary

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