It is very unlikely that a severed limb will be able to regenerate into a full-grown starfish unless it is already attached to at least a portion of the central disc. Regeneration from a single severed limb with no central disc has been observed in some species of sea stars, including Linckia diplax; it's unlikely but not impossible. The severed arm is able to grow a new central disc and four additional arms, resulting in a full sea star.
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Amputation A sea star that has the ability to regenerate amputated limbs must first undergo a repair phase to heal the exposed wound. Asexual Reproduction Sea stars have the ability to reproduce sexually and asexually. Central Disc Most species of sea stars must split part of their central disc along with a limb for regeneration to occur. Magazine How one image captures 21 hours of a volcanic eruption. Science Why it's so hard to treat pain in infants. Science The controversial sale of 'Big John,' the world's largest Triceratops.
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See how people have imagined life on Mars through history. See More. United States Change. In Some aspects of fission in Allostichaster polyplax. Berry Eds. Oxford: Pergamon Press. Fission and autotomy in echinoderms. Lawrence, J. Stress and deviant reproduction in echinoderms.
Zoological Studies , 39 , Haramoto, S. Patterns of asexual reproduction in the fissiparous seastar Coscinasterias acutispina Asteroidea: Echinodermata in Japan. Zoological Science , 24 , Kaack, K. Allocation of nutrient resources to body components by regenerating Luidia clathrata Say Echinodermata: Asteroidea. Simultaneous allocation of resources to arm regeneration and to somatic and gonadal production in Luidia clathrata Say Echinodermata: Asteroidea.
Yanagisawa, I. Yasumasu, C. Oguro, N. Motokawa Eds. Rotterdam: Balkema. The cost of arm autotomy in the starfish Stichaster striatus. Marine Ecology Progress Series , , Position of arm loss and rate of arm regeneration by Luidia clathrata Echinodermata: Asteroidea.
Cahiers de Biologie Marine , 49 , Littell, R. Tutorial in biostatistics: modelling covariance structure in the analysis of repeated measures data.
Statistics in Medicine , 19 , Mercier, A. Reproduction in Asteroidea. Lawrence Ed. Baltimore: JHU Press. Mladenov, P. Reproductive ecology of an obligately fissiparous population of the sea star Stephanasterias albula Stimpson.
Journal of Experimental Marine Biology and Ecology , 96 , Echinodermata asexual propagation. Adiyodi Eds. Pinheiro, J. London: Springer. Pomory, C M. Rate of regeneration of two arms in the field and its effect on body components in Luidia clathrata.
R Development Core Team R: A language and environment for statistical computing. Ramsay, K. Invest in arms: behavioural and energetic implications of multiple autotomy in starfish Asterias rubens.
Behavioral Ecology and Sociobiology , 50 , Rubilar, T, Pastor de Ward, C. Rubilar, T. Timing of fission in the starfish Allostichaster capensis Echinodermata: Asteroidea in laboratory. Revista de Biologia Tropical , 53 Suppl. Fission, regeneration, gonad production and lipid storage in the fissiparous sea star Allostichaster capensis. Skold, M, Barker, M. Spatial variability in sexual and asexual reproduction of the fissiparous sea star Coscinasterias muricata : the role of food and fluctuating temperature.
Sterling, K. Symonds, M. This is an open-access article distributed under the terms of the Creative Commons Attribution License.
Services on Demand Journal. Tamara Rubilar 1 Pablo E. Abstract Many studies have focused on the regeneration rate of arms in Asteroidea but no studies have focused on the regeneration rate after fission. Results The mixed linear model analysis used to determine the growth pattern of the regenerating arms and the non-regenerating arms of the seas stars revealed that the regenerating arms regenerate according to a quadratic model, while the non-regenerating arms adjusted to a linear model Table 2.
Discussion Regeneration after fission is quite a different process than regeneration after autotomy. References Achituv, Y.
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