Shell Shape Variation of Tropical Limpet Cellana testudinaria (Class: Gastropoda, Family: Patellidae) Living on the Rocky Shore in Relation to Their Zonal Distribution
Abstract: An examination of
the body dimensions of C. testudinaria indicated that specimens collected from
the three different shore levels were significantly different in shell length
(L), width (B), height (H), distance from apex to anterior margin (AA), and
distance from apex to posterior margin (AP). The overall relationships between body
dimensions and shell length were negatively allometric. The relationships of
shell length to AA and AP indicated that the apex of limpets living at the low
shore level are shifted backward in individuals less than 18 mm in shell
length, while it is shifted forward in larger limpets. Morphometric studies on
the ratio of shell length to shell width and shell height and the ratio of
shell circumference to volume provided similar results as the analyses of the
body dimensions, indicating that limpets inhabiting the low shore level were
broader and taller and had more acute, backward shifted apex than those living
at the high and middle shore levels.
Author: Abraham Seumel Khouw
Journal Code: jpperikanangg060009
Artikel Terkait :
Jp Perikanan gg 2006
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