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A New Species Of Ovabunda (Octocorallia, Xeniidae) From The Andaman Sea, Thailand With Notes On The Biogeography Of This Genus, Catherine S. Mcfadden, Michael P. Janes, Thanongsak Chanmethakul
A New Species Of Ovabunda (Octocorallia, Xeniidae) From The Andaman Sea, Thailand With Notes On The Biogeography Of This Genus, Catherine S. Mcfadden, Michael P. Janes, Thanongsak Chanmethakul
All HMC Faculty Publications and Research
A survey of xeniid octocorals was carried out in the waters off Southwestern Thailand in September, 2007. Microscopic investigation of the colonies revealed that three specimens belonged to the genus Ovabunda. Gross morphological examination is presented here accompanied by scanning electron micrographs of the sclerites. Molecular phylogenetic analysis showed identical genotypes at mtMutS, COI, and 28S rDNA for all three specimens and supports their generic assignment. Colony size and shape, sclerite size, and pinnule arrangement differ from nominal species of Ovabunda and thus a new species, O. andamanensis is introduced here. This work also presents a new …
Effects Of Phylogeny On Structural Correlations Of Vertebrate Eyes, Amanda Yl Jacobs
Effects Of Phylogeny On Structural Correlations Of Vertebrate Eyes, Amanda Yl Jacobs
Scripps Senior Theses
Common ancestry prevents scientists from using traditional statistical tests in dimensional comparisons that span entire clades. Data in these cases are non-independent, so a variety of special statistical methods have been developed specifically for phylogenetic comparative analyses. A phylogenetic least squares method was used to re-examine four published datasets detailing structural correlates of eyes while factoring in the different ways the phylogeny was expected to affect the covariance in trait values. All analyses were carried out in a strict phylogenetic context, using published time-calibrated phylogenies and the statistical platform R. Specifically, Pagel’s lambda was used to determine how much of …