They were, however, observed at several sites along the Stikine River and breeding activity was observed at the Cheliped
Bay and nearby Mallard Slough sites.
a larger cheliped
, dorsal view; b same, ventral view; c smaller cheliped
, dorsal view; d same, ventral view; e right second pereopod, lateral view; f same, propodus and dactylus, lateral view.
uncinatus) in a small pool hidden under a rock, holding a lizard (Norops lemurinus) in its major (right) cheliped
1997; maximum TL, 47 mm), at which the female becomes ovigerous and one major cheliped
begins to enlarge more in the male (sexual dimorphism; Shimoda et al.
Chemical stimulants of cheliped
flexion behavior by the western Atlantic ghost crab Ocypode quadrata (Fabricius).
differentiation and sex ratio of the fiddler crab Uca arcuata.
Some arthropods, for example crabs, use a raking or sieving feeding method (Hadlock 1980; Bauchau and PasselecqGerin 1988), including the hermit crab (Pagurus rubricatus) that uses its cheliped
to excavate a shallow trench, and uses the chelicerae to transfer sediment and food to the mouth (Schembri 1982).
(1999) Wa = abdomen width; Lplc = propodus length of the largest cheliped
; Lg = length of gonopodium.
photographs showing the external appearance of the red swamp freshwater crayfish P clarkii; slide (a) dorsal view, slide (b) dorsolateral view and side (c) lateral view to show; cephalothorax (Ct), abdomen (Ab), tail (T), rostrum (R), cephalic tubercle (Cp), lateral tubercle of branchiostegite (Lt), walking legs (W), cheliped
(ch), cervical groove (1), median groove (2), caudal groove (3), rostral angle of lateral tubercle (4), lateral border of branchiostegite (5), caudal border of branchiostegite (6), rostral groove (Rg), antennae (An).
Distinguishing features: Narrow frontal margin with black/brown mottled legs and carapace, red granulated chelae and cheliped
sanguinolentus, external abnormalities, edible crabs, carapace, cheliped
Thus, the aim of this study is to investigate the sexual shape dimorphism in three body areas (anterior and dorsal region of carapace and major cheliped
) on a U.