Thursday 28 March 2013

FÜR ALICIA - Pocillopora aliciae

A new coral species has been recently discovered by Sebastian Schmidt-Roach and the new taxon, genetically delineated in a previous publication, is now in great detail  morphologically described in this new paper. And the name of the new species? Well guess what? Of course, after Sebastian’s wife, Alicia! Pocillopora aliciae! Is this great or not?
Abstract: Lack of morphological features of diagnostic value and high levels of environmental phenotypic plasticity obscure species boundaries for most taxa in the genus Pocillopora Lamarck, 1816 and complicate the definition of taxonomically distinct units. Species of the genus are colonial, generally ramose, rarely massive or encrusting and mostly hermatypic; corallite arrangement is plocoid, septa are generally poorly developed and usually arranged in two cycles; the columella is mostly poorly developed (Veron & Pichon 1976). Verrucae are common, although reduced in some species. Currently 17 species are formally acknowledged within the genus (Veron 2000). Using a molecular phylogenetic approach, recent studies were able to identify genetically distinct lineages in Pocillopora, indicating that Pocillopora damicornis (Linnaeus, 1751) consists of a cryptic species complex (Souter 2010; Schmidt-Roach et al. 2012a). One of these species, previously considered a temperate ecomorph of P. damicornis, is here described as a novel species, based on its distinct morphology, unique mitochondrial haplotype and incongruity with previously described taxa in P. damicornis. Pocillopora aliciae sp. nov. exhibits a flat, plate-like growth (usually displayed by deep-water morphs of pocilloporids) at all depths, which clearly differentiates it from P. damicornis colonies at subtropical Lord Howe Island or Rottnest Island. Furthermore, Stylophora pistillata Esper, 1797, which is equally known to exhibit flat deep-water morphs, maintains its common gross morphology at equal depth to P. alicae sp. nov..The new species is described below. Types are deposited in the Museum of Tropical Queensland (MTQ), in Townsville Australia
 
Relevant literature

Wednesday 13 March 2013

Phylogeography of Stylophora pistillata

Pink, brownish or yellowish, this is Stylophora pistillata (Esper 1797), another coral species characterised by a “cauliflower-like” morphology, commonly used in ecological, physiological and evolutionary studies ranging from reading morphogenesis, exploring apoptosis, symbiosis and coral bleaching to understanding circadian rhythmicity, thermal stress and calcification.
Stylophora ecomorphs
Stefani and co-workers (2011) and Flot and co-authors (2011) have recently questioned the validity of ecomorphs and genetic lineages within Stylophora using morphology and molecules. The studies were independently performed on specimens collected globally (north-western Gulf of Aden and Taiwan, Madagascar, Okinawa, the Philippines and New Caledonia) and multiple cryptic species have been identified.