The characteristic dark color of Diadema antillarum is chiefly attributable to a black pigment, most of which is contained in large epidermal chromatophores (see Fig. 1). A red pigment is also present, but is easily separable from the black, being readily soluble in ethanol and acetone, whereas the black is not. The nature of the red pigment is unknown and we have not studied its properties. Co...

The urchin Diadema antillarum Philippi (Echinodermata: Echinoidea) was extremely rare to absent from reefs throughout Jamaica during much of the 1980s and part of the 1990s following a Caribbean wide mortality event. This survey was conducted in 2007 to assess their distribution on the western forereef of Discovery Bay, Jamaica. Mean urchin densities of 3.93 ± 3.4 m -2 (mean ± SD) are the highe...

Regions where lemur subspecies are sympatric or hybridize are of great interest to scientists and conservation authorities. If two subspecies of lemur are sympatric and do not interbreed, then both may warrant recognition at the species level. Such taxonomic changes have important implications for conservation authorities. If the lemur subspecies interbreed, then they form a hybrid zone. There ...

OBJECTIVE We investigated whether limiting the hours of alcoholic beverage sales in bars had an effect on homicides and violence against women in the Brazilian city of Diadema. The policy to restrict alcohol sales was introduced in July 2002 and prohibited on-premises alcohol sales after 11 pm. METHODS We analyzed data on homicides (1995 to 2005) and violence against women (2000 to 2005) from...

. 1996. Demographic approaches to community dynamics: A coral reef example. Ecology 77: 2256–2260. , B. D. KELLER, J. B. C. JACKSON, AND M. J. BOYLE. 1985. Mass mortality of the echinoid Diadema antillarum in Jamaica. Bull. Mar. Sci. 36: 377–384. , D. C. REED, AND M. J. BOYLE. 1987. Herbivory on coral reefs: Community structure following mass-mortality of sea urchins. J. Exp. Mar. Biol. Ecol. 1...

The present study is aimed to validate the occurrence of two species Diadem or Royal snakes Genus Spalerosophis Jan, 1865 from Poonch District Jammu and Kashmir, India along with presentation eight different colour morphs diagnostic characteristics. include four adults S. d. diadema (Schlegel, 1837), atriceps (Fischer, 1885), one morph subadults unknown parentage adult 1837) represented by a si...

Purification of Lactic Acid Produced from Sugarcane Molasses Andrea Komesu, Patrícia F. Martins, Johnatt Oliveira, Betânia H. Lunelli, Rubens Maciel Filho, Maria Regina Wolf Maciel School of Chemical Engineering, University of Campinas (UNICAMP), Box: 6066, Zip: 13083-970, Campinas-SP, Brazil. Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo (UNIFESP), Zip Code: 099...