Gnathopod


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Gnath´o`pod


n.1.(Zool.) A gnathopodite or maxilliped. See Maxilliped.
References in periodicals archive ?
The species name refers to the elongate carpus of gnathopod 1 in the female (Fig.
These plates are like shields protecting the proximal/upper parts of the two pairs of claws and five pairs of legs, or, as in amphipodal parlance, gnathopods and pereopods respectively.
Lysianassoid amphipods are characterized, in a variable way, by antenna 1 with peduncle short and robust, and flagellum with callynophore; antennae with calceoli; rostrum reduced; gnathopod 2 with a minute dactylus, with article 3 elongate and article 6 mitten-shaped (Senna & Serejo, 2008).
glacialis has a forceps-like dactylus on its gnathopod 2 that was interpreted as allowing the species to collect small particles such as diatoms (Arndt et al., 2005).
In a previous study of two Hyalella ecotypes in southeast Michigan I found that the influence of gnathopod size on male reproductive success differed between ecotypes (Wellborn, 1995b).
Traits that were generally correlated with body size within populations (antennal segment number, spine length, gnathopod size, and egg number) were size-adjusted by calculating the expected trait value for a population at the overall mean body size for all Hyalella in the study (0.586 mm head length for females and 0.578 mm for males).
At the end of the experiment, the sex of each individual was determined using the size and shape of its first and second pairs of gnathopods, which are sexually dimorphic in amphipods (Hume et al., 2005).
A male grabs a female with its gnathopods and the pair remains attached until the female molts.
At the same time, the amphipods utilized their first and second pairs of pereopods (gnathopods) to manipulate the initial silk strands, possibly pulling them tight to curl the kelp blade.
fasciatus are limited to a detrital diet because of the inability of their gnathopods or similar feeding mouthparts to handle larger food items (e.g., filamentous algae and invertebrate prey).
volutator produces a water current through its tube that brings suspended particles to the long setae fringing the gnathopods, thus indicating that it may also employ a filter-feeding mechanism.
However, we identified three divisions in this region (from two of the three preparations sectioned in the horizontal plane), which might reflect the presence of the three pairs of gnathopods that can be seen with either scanning electron microscopy or light microscopy [ILLUSTRATION FOR FIGURE 12B OMITTED].