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The function of mucous secretions in the cushion star pteraster tesselatus


, : The function of mucous secretions in the cushion star pteraster tesselatus. Journal of Experimental Marine Biology & Ecology 40(3): 259-266

In all previous studies involving the behavior of the cushion star P. tesselatus Ives, the possibility that this asteroid's copious secretions of mucus are defensive in nature was suggested, but never studied to any degree. This showed that discharge of mucus from Pteraster was triggered not only by physical stimulation, but also from contact with the asteroid-consuming sea stars Solaster dawsoni Verrill and Pycnopodia helianthoides (Brandt). Mucus repelled these 2 asteroids so effectively that it provided P. tesselatus with protection from predation for essentially 100% of the time. Pteraster specimens were easily and harmlessly rendered defenseless by removing their mucous-cell-containing supradorsal membranes by dissection. Without the mucous secretions available for discharge, P. tesselatus was easily preyed upon by both S. dawsoni and P. helianthoides.

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Accession: 006680401

DOI: 10.1016/0022-0981(79)90055-8

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Related references

Nance, JM.; Braithwaite, LF., 1979: The function of mucous secretions in the cushion star Pteraster tesselatus Ives. In all previous studies involving the behavior of the cushion star P. tesselatus Ives, the possibility that this asteroid's copious secretions of mucus are defensive in nature was suggested, but never studied to any degree. This showed that d...

Chia, F.Shiang, 1966: Development of a deep-sea cushion star, Pteraster tesselatus. The breeding season of Pteraster tesselatus Ives in the vicinity of San Juan Island, Washington, is around July and August. Under laboratory conditions, the development from fertilization to the completion of metamorphosis takes about a month. The...

Rodenhouse, I.Z.ntheo; Guberlet, J.E., 1946: The morphology and behavior of the cushion star Pteraster tesselatus Ives. The general morph. of P. tesselatus is very similar to that of other sea-stars, save for the supra-dorsal membrane. Due to the presence of this membrane, Pteraster has developed an additional form of behavior, that of inflating and deflating the b...

Kelman, D.; Emlet, R.B., 1999: Swimming and buoyancy in ontogenetic stages of the cushion star Pteraster tesselatus and their implications for distribution and movement. The eggs of some marine fish (1) and benthic invertebrates such as many corals (2, 3) and lecithotrophic echinoderms (4, 5) are positively buoyant at time of release from the parent, and density increases later in ontogeny. How these eggs and larv...

Nance J.M.; Braithwaite L.F., 1981: Respiratory water flow and production of mucus in the cushion star pteraster tesselatus echinodermata asteroidea. Histological analysis revealed 3 types of mucous cells present in the tissues of P. tesselatus Ives. They were all unicellular in structure, and each was restricted to certain areas of the anatomy. Mucus produced by these gland cells was forced ou...

Nance, JM.; Braithwaite, LF., 1981: Respiratory water flow and production of mucus in the cushion star, Pteraster tesselatus Ives (Echinodermata: Asteroidea). Histological analysis revealed 3 types of mucous cells present in the tissues of P. tesselatus Ives. They were all unicellular in structure, and each was restricted to certain areas of the anatomy. Mucus produced by these gland cells was forced ou...

Kelman; Emlet, 2000: Swimming and buoyancy in ontogenetic stages of the cushion star Pteraster tesselatus (Echinodermata: asteroidea) and their implications for distribution and movement. Biological Bulletin 197(3): 309-314

Cowart, Jonathan-Daniel, 2002: The mating system of the sea star Pteraster tesselatus Ives 1888 (Echinodermata Asteroidea) :

Cowart, J.D., 2000: Palatability of Pteraster tesselatus eggs. Risk of offspring mortality is a critical component of models concerning the ecology and evolution of life history traits in marine invertebrates. In these models, predation is generally assumed to be the most important cause of pre-settlement off...

Petersen, J.A., 1971: Gas exchange and active ventilation in a starfish, Pteraster tesselatus. Z. Physiol: 365-381