Shell-boring polychaetes affect gastropod shell strength and crab predation
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چکیده
منابع مشابه
Crab Shell-crushing Predation and Gastropod Architectural Defense
The shell-breaking behavior of the crabs 0:iu.y verrec~uxri Saussure 1853 and Eriphia .squtmwta. Stimpson 1859 from the Bay of Panama is described. The master claws of both these crabs are well designed for breaking shells. Small shells, relative to the size of a crab predator, are crushed by progressively breaking off larger segments of a shell’s apex, while larger shells are peeled by inserti...
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T h e proportion of bivalve shells with drill holes i n fossil assemblages is commonly used as a measure of the intensity of predation by drilling gastropods. Previous studies have assumed that drilled and undrilled bivalve shells have equal preseruat ion wotentials. W e tested this assumption by measuring the mechanical strength of drilled and undrilled valves of the Recent bivalve Mulinia lat...
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In contrast to the diets of other cottid fishes and most teleosts, the diet of Asemichthys taylori is dominated by gastropod mollusks. Access to this underused prey appears to be made possible by morphological speializations of the neurocanium that allow Asemichthys to puncture the shells of its prey during mastication. Unpunched, the shell and operculum act as a barrier to digestion; more than...
متن کاملLand hermit crab (Coenobita clypeatus) densities and patterns of gastropod shell use on small Bahamian islands
Land hermit crabs are common in many insular and coastal habitats in tropical and subtropical regions worldwide (Hartnoll, 1988; Greenaway, 2003). Some species, such as Coenobita clypeatus (Herbst), may be found many kilometres inland (Chace & Hobbs, 1969; DeWilde, 1973; NievesRivera & Williams, 2003). However, relatively few studies have addressed the densities of land hermit crabs, their ecol...
متن کاملFurther twists in gastropod shell evolution.
The manner in which a gastropod shell coils has long intrigued laypersons and scientists alike. In evolutionary biology, gastropod shells are among the best-studied palaeontological and neontological objects. A gastropod shell generally exhibits logarithmic spiral growth, right-handedness and coils tightly around a single axis. Atypical shell-coiling patterns (e.g. sinistroid growth, uncoiled w...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2007
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps329123