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The movement capacity of the crown-of-thorns starfishes (Acanthaster spp.) is a primary determinant of both their distribution and impact on coral assemblages. We quantified individual movement rates for the Pacific crown-of-thorns starfish (Acanthaster solaris) ranging in size from 75-480 mm total diameter, across three different substrates (sand, flat consolidated pavement, and coral rubble) on the northern Great Barrier Reef. The mean (±SE) rate of movement for smaller (<150 mm total diameter) A. solaris was 23.99 ± 1.02 cm/ min and 33.41 ± 1.49 cm/ min for individuals >350 mm total diameter. Mean (±SE) rates of movement varied with substrate type, being much higher on sand (36.53 ± 1.31 cm/ min) compared to consolidated pavement (28.04 ± 1.15 cm/ min) and slowest across coral rubble (17.25 ± 0.63 cm/ min). If average rates of movement measured here can be sustained, in combination with strong directionality, displacement distances of adult A. solaris could range from 250-520 m/ day, depending on the prevailing substrate. Sustained movement of A. solaris is, however, likely to be highly constrained by habitat heterogeneity, energetic constraints, resource availability, and diurnal patterns of activity, thereby limiting their capacity to move between reefs or habitats.
This article was published in the following journal.
Name: PloS one
In the North Pacific, fish-eating R-type 'resident' and mammal-eating T-type 'transient' killer whales do not interbreed and differ in ecology and behavior. Full-length mitochondrial genomes (about 16...
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The work of Nau et. al (Nau KL, Bromberg MB, Forshew DA, Katcha Vl. Individuals with amyotrophic lateral sclerosis are in caloric balance despite losses in mass. J Neurol Sci 1995;129 :47-...
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Atrial fibrillation (AF) is the most frequently encountered cardiac arrhythmia. Emerging data suggests that common genetic variants are associated with the development of AF. The main feat...
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The act, process, or result of passing from one place or position to another. It differs from LOCOMOTION in that locomotion is restricted to the passing of the whole body from one place to another, while movement encompasses both locomotion but also a change of the position of the whole body or any of its parts. Movement may be used with reference to humans, vertebrate and invertebrate animals, and microorganisms. Differentiate also from MOTOR ACTIVITY, movement associated with behavior.
A measure of human size, shape, proportion, composition, maturation, and gross function; in relation to body movement, physical exercise, fitness, and performance.
A country in western South America, bordering the Pacific Ocean at the equator, between Colombia and Peru.
A genus of semi-aquatic elapid snake that inhabits coastal waters of the tropical Indian and Western Pacific Oceans.
Sense of movement of a part of the body, such as movement of fingers, elbows, knees, limbs, or weights.