Maxillipeds


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Related to Maxillipeds: uropods, Swimmerets, Pleopods

Maxillipeds

 

appendages of the first three front thoracic segments in crustaceans. They are used for catching and breaking up food and for feeling and tasting; they are frequently also used for breathing and for ventilating the branchial cavities. In structure the maxillipeds resemble the lower jaws (maxillae) and the walking legs. In chilopods the clawlike legs of the first segment of the body are called maxillipeds.

References in periodicals archive ?
2 = moderate movement of legs, righting time of 10-60 s in water bath, fast movement of maxillipeds, chelae grab any object strongly and for long periods (up to 1.
3 = fast, active movement of legs, righting time of 5-40 s in water bath or on the sorting table, fast movement of maxillipeds, chelae grab any object strongly and for long periods ([greater than or equal to] 2 min), threat display.
Maxilla and first maxilliped with dense covering of setae-like structure formed by bacterial colony on ventral surfaces of scaphognathite and caridean lobe, respectively (Fig.
1988) reported that the first pereopod has a function of scraping and grazing of filamentous bacteria covering the scaphognathite of the maxilla and the caridean lobe of the first maxilliped in adults of Rimicaris exoculata.
Martin and Hessler (1990) described the third maxilliped of Rimicaris exoculata as four long segments and one or two fused, shorter, basal segments, but this is not correct.
Also, the reduction of the exopod on the first maxilliped and the loss of the grooming apparatus on the carpus of the first pereopod are also remark able.
Maxilla and first maxilliped with numerous plumose seta-like structures on ventral surfaces in C.
paulexa, the scaphognathite of the maxilla and the caridean lobe of the first maxilliped are nearly naked on the ventral surfaces, whereas in C.
Scaphognathite of maxilla and caridean lobe of first maxilliped bearing numerous plumose seta-like structure on ventral surface; exopodal flagellum on first maxilliped completely reduced.
These larvae appeared to have been hatched prematurely, and their morphology differed from that expected for a first-stage zoea form in that maxillipeds were devoid of natatory setae (see Morphology section above).
Identification of species was based on the morphological characters of rostrum, carapace, branchiae, antennule, antenna, third maxilliped, pereiopods, pleopods, abdomen, telson, petasma, thelycum, and the colored pattern of the whole body based on keys and diagnoses available from the current literature.
Species identification was based on the morphological characters of rostrum, carapace, branchiae, antennule, antenna, third maxilliped, pereiopods, pleopods, abdomen, telson, petasma, thelycum, and the colored pattern of the whole body.