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Spatial distribution of symbiotic shrimps (Periclimenes holthuisi, P. brevicarpalis, Thor amboinensis) on the sea anemone Stichodactyla haddoni
Khan, R.N.; Becker, J.H.A.; Crowther, A.L.; Lawn, I.D. (2004). Spatial distribution of symbiotic shrimps (Periclimenes holthuisi, P. brevicarpalis, Thor amboinensis) on the sea anemone Stichodactyla haddoni. J. Mar. Biol. Ass. U.K. 84(1): 201-203. https://dx.doi.org/10.1017/S0025315404009063h
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, more
Peer reviewed article  

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Keywords
    Aquatic organisms > Marine organisms > Aquatic animals > Marine invertebrates
    Distribution > Geographical distribution
    Distribution > Temporal distribution
    Fauna > Aquatic organisms > Aquatic animals > Shellfish > Marine organisms > Marine crustaceans
    Feeding
    Hosts
    Marine/Coastal

Authors  Top 
  • Khan, R.N.
  • Becker, J.H.A.
  • Crowther, A.L.
  • Lawn, I.D.

Abstract
    This study investigated the spatial distribution patterns of three shrimp species, Periclimenes holthuisi, P. brevicarpalis, and Thor amboinensis on the sea anemone Stichodactyla haddoni in the laboratory. Anemones were partitioned into five zones (mouth, inner tentacle, outer tentacle, upper column, and lower column), and shrimp distribution on these zones was determined. Regardless of species, significantly higher numbers of shrimps chose outer tentacles (>40%) over other zones during daytime. Such distribution might be attributed to their feeding practices as these crustaceans clipped and ate parts of the outer tentacles. Periclimenes holthuisi also showed varying temporal distribution patterns on their hosts. At night when anemones contracted their tentacles, shrimp moved in significant numbers from the outer tentacle region either to the column or off the anemones. Shrimps returned to the tentacles during daytime when anemones expanded their tentacles. Thus, spatial and temporal distribution of shrimps depend upon their feeding activities and degree of anemone expansion.

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