The empire beats on: Oyo, Bata drums and hegemony in nineteenth-century Cuba

The Lukumí people of Cuba, currently known as Yoruba, are descendants of one of the mightiest West African kingdoms, the Oyo, Empire. The Oyo-Yoruba were important cultural contributors to certain areas of the New World such as Cuba, Brazil, Trinidad, and to some degree Haiti and the Lesser Antilles. Anthropologist William Bascom has said that “no African group has had greater influence on New World culture than the Yoruba.” ^ After the devastation of the empire around 1825, two new Oyos resuscitated. The first, New Oyo, was established about 80 miles south of the ancient site around 1830. The second Oyo was instituted on the other side of the Atlantic Ocean, in the city of Havana and its surrounding towns. Much of Oyo lie, as ancient Oyo is now called, was transported to the New World, reformed and adapted according to its new surroundings, and, it preserved its reign over its “subjects” through the retention and dissemination of its cultural and religious practices. ^ Using an interdisciplinary approach, this investigation will argue that of all the African groups brought to Cuba, the Oyo-Yoruba were the most influential in shaping Afro-Cuban culture since their introduction in the nineteenth century. The existence of batá drums in Cuba and the cultural components of this musical genre will serve as one of many examples to illustrate the vitality of Oyo cultural hegemony over Afro-Cubans. It is arguable that these drums and the culture that surrounded them were very important instruments used by the Oyo to counter the acculturation of many Africans in Cuba. Likewise, this culture became acculturative in itself by imposing its religious world views on non-Oyo ethnics and their descendants. Oral histories and narratives collected among Lukumí practitioners on the island and abroad have been invaluable archives to supplement and/or complement primary and secondary sources of information. ^

Student Expositions as an Opportunity to Feel Proud: One Antidote to Expectations of Failure in Zone Schools

Expositions of student work at the end of the extended school year are one of many reform efforts in a specially formed School Improvement Zone in Miami Dade schools. This descriptive analysis offers examples of successful attempts to engender pride even in the face of formidable social and cultural obstacles.

Long-Term Effects of Adding Nutrients to an Oligotrophic Coastal Environment

Management of ecological disturbances requires an understanding of the time scale and dynamics of community responses to disturbance events. To characterize long-term seagrass bed responses to nutrient enrichment, we established six study sites in Florida Bay, USA. In 24 plots (0.25 m2) at each site, we regularly added nitrogen (N) and phosphorus (P) in a factorial design for 7 years. Five of the six sites exhibited strong P limitation. Over the first 2 years, P enrichment increased Thalassia testudinum cover in the three most P-limited sites. After 3 years, Halodule wrightii began to colonize many of the P-addition plots, but the degree of colonization was variable among sites, possibly due to differences in the supply of viable propagules. Thalassia increased its allocation to aboveground tissue in response to P enrichment; Halodule increased in total biomass but did not appear to change its aboveground: belowground tissue allocation. Nutrient enrichment did not cause macroalgal or epiphytic overgrowth of the seagrass. Nitrogen retention in the study plots was variable but relatively low, whereas phosphorus retention was very high, often exceeding 100% of the P added as fertilizer over the course of our experiments. Phosphorus retentions exceeding 100% may have been facilitated by increases in Thalassia aboveground biomass, which promoted the settlement of suspended particulate matter containing phosphorus. Our study demonstrated that lowintensity press disturbance events such as phosphorus enrichment can initiate a slow, ramped successional process that may alter community structure over many years.

Over-Expression of Endothelin 3 Sensitizes Mice to Uv-Induced Melanoma Metastasis

Melanomagenesis is influenced by environmental and genetic factors. In normal cells, ultraviolet (UV) induced photoproducts are successfully repaired by the nucleotide excision repair (NER) pathway. Mice carrying mutations in the xeroderma pigmentosum (Xp) complementation group of genes (Xpa-Xpg) lack the NER pathway and are therefore highly sensitive to UV light; however, they do not develop melanoma after UV exposure. In humans, the Endothelin 3 signaling pathway has been linked to melanoma progression and its metastatic potential. Transgenic mice that over-express Edn3 under the control of the Keratin 5 promoter (K5-Edn3) and exhibit a hyperpigmentation phenotype, were crossed with Xp deficient mice. Because melanoma is highly metastatic and many primary malignancies spread via the lymphatic system, analyzing the lymph nodes may serve useful in assessing the possible spread of tumor cells to other tissues. This study aimed to determine whether the over-expression of Edn3 is sufficient to lead to melanoma metastasis to the lymph nodes. Mice were exposed to UV radiation and analyzed for the presence of skin lesions. Mice presenting skin lesions were sacrificed and the nearest lymph nodes were excised and examined for the presence of metastasis. Mice with melanoma skin lesions presented enlarged and hyperpigmented lymph nodes. Diagnosis of melanoma was established by immunostaining with melanocyte and melanoma cell markers, and while UV radiation caused the development of skin lesions in both K5-Edn3 transgenic and control mice, only those mice carrying the K5-Edn3 transgene were found to develop melanoma metastasis to the lymph nodes. These results indicate that over-expression of Edn3 is sufficient to lead to lymph node metastasis in mice exposed to at least one dose of UV radiation.