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Free Content Some Biological Controls on the Distribution of Shallow Water Sea Stars (Asteroidea; Echinodermata)

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Abstract:

Tropical shallow water sea star faunas, especially those of the Indo-West Pacific, are dominated by the order Valvatida. Among sea stars, valvatidans have the best-developed antipredatory devices. Vermeij (1978) found high to low latitudinal increases in antipredatory structures in various in vertebrate groups (e.g., gastropods). The valvatidan occurrences suggest the presence of controls in sea stars similar to those affecting other groups. The Valvatida includes few genera that prey on active, solitary invertebrates, but such habits are common in other orders, and in cooler waters. Protective structures appear to restrict predatory abilities. The importance of sea stars as predators on solitary organisms declines in tropical latitudes, yet sea stars have evolved only limited basic structural variation since their appearance in the Ordovician. Phylogenetic constraints in adaptability appear strong in sea stars because of their evolutionary failure to maintain predatory life habits in shallow tropical waters.

Document Type: Research Article

Publication date: 1983-07-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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