Results 121 to 130 of about 1,354 (162)

Predator regulation of Acanthaster planci

Journal of Theoretical Biology, 1987
The Crown of Thorns starfish Acanthaster planci is present, though rare, on most Indo-Pacific coral reefs, but in the past 20 years outbreaks have occurred on many reefs. One theory that has been advanced to explain this behaviour is that populations are normally regulated by predation and that outbreaks result from a relaxation of predator pressure ...
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Is Acanthaster planci an r-strategist?

Nature, 1978
THE debate over the cause of plagues of the crown-of-thorns starfish, Acanthaster planci, has been as long as the plagues themselves (for reviews see refs 1–3). Most recently, two lines of reasoning based on ecological concepts have been used to suggest that the causes of the population explosions should be sought in some abnormal event, and thus man ...
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Haemodynamic and haematologic effects of Acanthaster planci venom in dogs

Toxicon, 1994
This study was designed to examine haemodynamic and haematologic effects of the crown-of-thorns starfish venom (Acanthaster planci venom: APV) in dogs. Severe systemic hypotension, thrombocytopenia and leukopenia were induced by APV (1.0 mg protein/kg i.v.), followed by gradual return to the baseline level within 60 min.
N, Shiroma, K, Noguchi, T, Matsuzaki, Y, Ojiri, K, Hirayama, M, Sakanashi   +5 more
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Biochemical stimuli for feeding in Acanthaster planci (L.)

Journal of Experimental Marine Biology and Ecology, 1976
Abstract The typical feeding response of the Crown of Thorns Starfish Acanthaster planci (L.) can be induced by mucoproteins of molecular weight greater than 200,000 daltons found in mucus obtained from corals of the genera Acropora and Fungia .
N.J. Hanscomb, J.P. Bennett, G. Harper
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Spawning observation of Acanthaster planci in the Gulf of Thailand

Marine Biodiversity, 2014
The corallivorous Crown of Thorns starfish, Acanthaster planci, has contributed greatly to the decline of coral coverage in reefs throughout the Indo-Pacific region (reviewed in Pratchett et al. 2014). To date, little information is available on the reproductive timing and controlling factors for A.
C. M. Scott, R. Mehrotra, P. Urgell
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Bias in manta tow surveys of Acanthaster planci

Coral Reefs, 1990
To investigate the biases associated with manta tow surveys of Acanthaster planci, counts obtained by manta-towed observers were compared with counts made on SCUBA swims under a limited range of conditions. Five 10 m wide strip transects on different parts of two reefs and with different densities of A. planci were surveyed.
L. Fernandes, H. Marsh, P. J. Moran, D. Sinclair   +3 more
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Field and Laboratory Observations of the Crown-of-Thorns Starfish, Acanthaster planci: Locomotory Response of Acanthaster planci to Various Species of Coral

Nature, 1970
Field and Laboratory Observations of the Crown-of-Thorns Starfish, Acanthaster planci: Locomotory Response of Acanthaster planci to Various Species of ...
D. J. BARNES, R. W. BRAUER, M. R. JORDAN
exaly   +2 more sources

Is Acanthaster planci a near-optimal predator?

Ecological Modelling, 1989
Abstract A two-dimensional model of the population dynamics of the crown of thorns starfish ( Acanthaster planci ) and its coral prey is constructed and analysed. The notion of a suboptimal-superoptimal continuum for the starfish predator is introduced. It is suggested that A. planci is a near-optimal predator on this continuum, and that population
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Identification of 23-demethylacanthasterol in an asteroid, Acanthaster planci and its synthesis

Steroids, 1980
23-Demethylacanthasterol was identified in an asteroid, Acanthaster planci, by GC-MS analysis and direct comparison with the synthetic sample prepared from 23-demethylgorgosterol. The sterol composition of A. planci is also described.
S, Sato, N, Ikekawa, A, Kanazawa, T, Ando   +3 more
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Toxins from the starfish Acanthaster planci and Asterina pectinifera

Toxicon, 1997
Abstract Stereochemistry and biological activities of the toxins from the starfish Acanthaster planci and Asterina pectinifera have been reviewed.
openaire   +2 more sources