African Cichlids Current Events | African Cichlids News
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Fish researcher demonstrates first 'non-visual feeding' by African cichlids
Most fish rely primarily on their vision to find prey to feed upon, but a University of Rhode Island biologist and her colleagues have demonstrated that a group of African cichlids feeds by using its lateral line sensory system to detect minute vibrations made by prey hidden in the sediments. view more (2009-04-14)
The importance of being helpful -- Cooperative cichlids boost their own reproductive success
Subordinate individuals living within a group of vertebrates sometimes assist a more dominant pair by helping to raise the dominant pair's offspring and this has been shown to occur among subordinate female cichlids. view more (2009-05-18)
East African cichlid fish offer new understanding of genetic basis of sex determination
Biologists have genetically mapped the sex chromosomes of several species of cichlid fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes may evolve. view more (2009-10-02)
Multiple genes permit closely related fish species to mix and match their color vision
Vision, like other biological attributes, is shaped by evolution through environmental pressures and demands, and even closely-related species that are in other ways very similar might respond to their particular environments by interpreting the visual world slightly differently, using photoreceptors that are attuned to particular wavelengths of... view more... (2005-10-11)
Genetic conflict in fish led to evolution of new sex chromosomes
University of Maryland biologists have genetically mapped the sex chromosomes of several species of cichlid (pronounced "sick-lid") fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes may evolve. view more (2009-10-02)
Few clues about African ancestry to be found in mitochondrial DNA
Mitochondrial DNA may not hold the key to your origins after all. A study published today in the open access journal BMC Biology reveals that fewer than 10% of African American mitochondrial DNA sequences analysed can be matched to mitochondrial DNA from one single African ethnic group. view more (2006-10-12)
Lower risk thresholds for heart disease needed
General practitioners should use lower risk thresholds for heart disease when they are treating high blood pressure in people from ethnic minorities, finds a study in this week’s BMJ. view more (2002-11-27)
African-American teens' perceptions of racial discrimination
A three-year study of African American youths' perceptions of racial discrimination has found that many Black teens consider themselves victims of racial discrimination, and these perceptions are linked to how they feel about being Black, particularly their views of how the broader society sees African Americans. view more (2009-04-29)
African-Americans at increased risk for earlier preterm births
Using data from over 700,000 births in Missouri from 1989 to 1997, researchers found that African American mothers were 3 times more likely than Caucasian mothers to deliver prematurely at 20-34 weeks and almost 4 times more likely to deliver extremely prematurely at 20-28 weeks. view more (2007-02-12)
Hope For South Africa - At Last (p 501)
This week's editorial urges the South African Government to implement new recommendations to provide antiretroviral treatment to tackle the country's grave HIV/AIDS epidemic. Three recent developments are detailed that offer some hope to the nearly 5 million South Africans living with HIV/AIDS: the authority of a South African drug company to... view more... (2003-08-13)
Prison Stigma Leads to Poor Health for African American Men
The Justice Policy Institute (2002) estimated that between 1980 and 2000, three times as many African American men went to prison than to universities and colleges. A study published in the Journal of Nursing Scholarship supports that following release from prison, men in this demographic group need steady jobs and stable homes to prevent imminent... view more... (2004-09-01)
Tobacco industry courted African American leaders to boost sales and stave off anti-tobacco legislation
The tobacco industry deliberately courted African American leadership organisations to increase its sales and defuse attempts to control tobacco use, reveals research in Tobacco Control. Compared with other racial groups in the US, African Americans bear the brunt of tobacco related disease, with a death toll of around 45,000 people every year.... view more... (2002-11-12)
Emergency departments test chest pain patients differently, based on race, gender and insurance
The study, conducted by Liliana E. Pezzin, Ph.D., associate professor of medicine at the Medical College, along with co-investigators Gary B. Green, M.D., MPH, and Penelope Keyl, Ph.D., at Johns Hopkins, appears in the February 2007 issue of Academic Emergency Medicine. view more (2007-02-02)
African-American Canadians who receive kidney transplants fare better than those in US
African American kidney disease patients in both Canada and the United States are less likely than Caucasian Americans to have access to kidney transplants, but only African-Americans in the United States have worse health outcomes than Caucasians after a transplant is performed. view more (2008-10-30)
Race Could Influence Outcome After Liver Transplantation (p 287)
Outcome after liver transplantation-both in terms of graft rejection and patients survival-could be related to race, with African American and Asian patients faring less well than white Americans and Hispanic patients, conclude authors of a study in this week's issue of THE LANCET. Evidence from previous research suggests that long-term survival... view more... (2002-01-23)
Study Examines Ethnic Differences in Sleep Quality and Blood Pressure
n the United States, African Americans have higher blood pressure and are at greater risk of hypertension than whites. In addition, African Americans report poorer sleep quality and exhibit a smaller nighttime decrease in blood pressure than whites, a phenomenon called blood pressure "dipping." view more (2007-10-30)
African-Americans have worse prognosis at colorectal cancer diagnosis
African-American patients with colorectal were more likely to present with worse pathological features at diagnosis and to have a worse five-year survival rate compared to Caucasian patients, according to a study conducted by researchers at Thomas Jefferson University. view more (2009-01-20)
Exposure to family violence compromises physical and mental health of older women
Older African American women exposed to high levels of family violence during their lifetimes are at significantly greater risk of poor health status, according to a report in the current issue of Journal of Women's Health, a peer-reviewed journal published by Mary Ann Liebert, Inc. view more (2009-03-06)
Specific Genotype Could Increase Resistance To HIV Drug Therapy (p 383)
A specific mutation of a gene which influences the expression of a glycoprotein transporter protein involved in the body's resistance to drugs and other toxins is detailed in a research letter in this week's issue of THE LANCET. Results of the study suggest that drug therapies used in treating HIV-1 infection (notably protease inhibitors ) may not... view more... (2001-08-01)
South African Government Urged To Take Action In Preventing Mother-To-Child HIV Transmission (p 992)
Leading South African scientists, writing in a Commentary in this week's issue of THE LANCET, are calling on their government to implement antiretroviral drug programmes without delay to reduce the vertical transmission of HIV-1 infection from pregnant women to their children. Around 75,000 South African children were born with HIV-1 infection in... view more... (2002-03-20)
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