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Factors Regulating Microhabitat Use by Young Juvenile Spiny Lobsters, Panulirus argus: Food and Shelter

James Marx and William Herrnkind
Journal of Crustacean Biology
Vol. 5, No. 4 (Nov., 1985), pp. 650-657
Published by: on behalf of The Crustacean Society
DOI: 10.2307/1548242
Stable URL: http://www.jstor.org/stable/1548242
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Factors Regulating Microhabitat Use by Young Juvenile Spiny Lobsters, Panulirus argus: Food and Shelter
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Abstract

Habitation patterns of algal-dwelling juvenile spiny lobsters, Panulirus argus, are apparently regulated by a) the availability of epifaunal prey, and/or b) limited sheltering qualities provided by algal branching. Predictions derived from each hypothesis were tested by monitoring emigration from normal (prey abundant), rinsed (prey reduced), and rinsed but structurally enhanced clumps of red algae, Laurencia spp. Density dependent emigration from untreated clumps containing natural prey, and markedly increased emigration from clumps nearly void of potential prey, suggest that trophic pressures play an important role in regulating algal habitation. Solitary dwelling induced by agonistic behavior may function to reduce required foraging area, thus minimizing both exposure to predators and energetic expenditures.

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