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On Pseudocorynactis species and another related genus from the Indo-Pacific (Anthozoa: Corallimorphidae)

Revista de la Facultad de Ciencias Agrarias (Impact Factor: 0.17). 01/2010;
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    ABSTRACT: Polyps of the corallimorpharian Paracorynactis hoplites were studied in coral reefs of the Davao Gulf, the Philippines, between October 2007 and January 2009. Polyps of Paracorynactis hoplites preyed mainly on echinoderms. Predation on seven species of echinoderms was observed in the fi eld (four asteroids, two echinoids and one holothurian); an additional ten species were accepted during feeding trials (four asteroids, four echinoids and two holothurians). The echinoids Diadema setosum, Diadema savignyi and Echinotrix calamaris, and the ophiuriod Ophiomastix sp. were not adversely affected by the polyps. The opisthobranch Phyllidiella pustulosa (Mollusca) was accepted during feeding trials, whereas the gastropod Cypraea tigris was not adversely affected. In a feeding experiment, polyps of Paracorynactis hoplites (maximum diameter 170 mm) completely ingested crown-of-thorns sea stars (Acanthaster planci) of up to 340 mm diameter. The polyps had a mean daily biomass uptake of 24.5 g d-1 when having a single-species asteroid diet. Fishes of several species of families Apogonidae, Gobiidae, Labridae, Pomacentridae, and Pseudochromidae as well as the shrimps (Periclimenes holthuisi, Periclimenes lacerate, Stenopus hispidus and Thor amboinensis) lived near or among the tentacles of the polyps.
    The Raffles bulletin of zoology 01/2011; · 0.91 Impact Factor
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    ABSTRACT: During the ECOMARG 2009 and INDEMARES 2010-2011 surveys to the La Gaviera canyon and the Galicia bank (N and NW Iberian Peninsula, NE Atlantic), several specimens of the uncommon corallimorpharian Sideractis glacialis Danielssen, 1890 (Cnidaria, Anthozoa, Hexacorallia) were dredged between 780 m and 970 m depth, using white coral as substrate. This is a rarely recorded species mainly distributed in arctic and subarctic waters, previously known between 220 m and 520 m depth. There was only one prior record further south than the 60ºN parallel from the Mediterranean Sea, and it is a new species for the Bay of Biscay and the Iberian Peninsula. The external anatomy is described, including a study of the cnidome with pictures of all the cnidae. The species is distinguished by its small size, thick and short tentacles of brick red colour tapering distally, white and neat hemispherical acrospheres (Fig.1), numerous papilliform elevations with spirocysts on the surface of the tentacle stalks, oral disc and distal end of the column (Pl.2, Fig.7), and the characteristic cnidome (Pl.1-4).
    Boletín de la Real Sociedad Española de Historia Natural. Sección biológica 01/2012; 106:151-161.
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    ABSTRACT: Juveniles of the Blackspotted wrasse Macropharyngodon meleagris (Valenciennes, 1839) were observed to solely inhabit xeniid soft corals in shallow exposed reefs in Negros Island (central Philippines). Juvenile coloration (including patterns and eyespots) and adapted swimming behavior may support blending in with the soft coral environment and avoiding predation. This report constitutes the first description of juvenile wrasses occupying niches within a soft coral microhabitat by using their unique coloration patterns and swimming behavior.
    Marine Biodiversity 02/2015; DOI:10.1007/s12526-015-0332-x

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