Snapshot of the AAOHN Membership-Health Risk Appraisal Priority Areas
WORKPLACE HEALTH & SAFETY
2013; 61 (6): 237-242
A 2012 American Association of Occupational Health Nurses, Inc. (AAOHN) web-based membership survey of 5,138 members was designed to identify occupational health and safety issues facing members. A total of 2,123 members responded to the survey (41% response rate). Of the AAOHN members who responded to this survey, 61% reported health risk appraisal (HRA) priorities for 2012. HRA priority areas are identified among various subgroups of the AAOHN responders in this article. The top three HRA priority areas identified were weight management/nutrition/healthy eating, physical activity, and mental health/stress management. These priority areas were consistent across three industry sectors, three occupational health nurse job titles, and the smallest and largest employers. These results suggest that occupational health nurses should consider prioritizing their employee wellness efforts in these areas.
View details for DOI 10.3928/21650799-20130529-79
View details for Web of Science ID 000321111800001
View details for PubMedID 23738570
Quantitative trait loci affecting the difference in pigmentation between Drosophila yakuba and D. santomea
2005; 171 (1): 211-225
Using quantitative trait locus (QTL) mapping, we studied the genetic basis of the difference in pigmentation between two sister species of Drosophila: Drosophila yakuba, which, like other members of the D. melanogaster subgroup, shows heavy black pigmentation on the abdomen of males and females, and D. santomea, an endemic to the African island of São Tomé, which has virtually no pigmentation. Here we mapped four QTL with large effects on this interspecific difference in pigmentation: two on the X chromosome and one each on the second and third chromosomes. The same four QTL were detected in male hybrids in the backcrosses to both D. santomea and D. yakuba and in the female D. yakuba backcross hybrids. All four QTL exhibited strong epistatic interactions in male backcross hybrids, but only one pair of QTL interacted in females from the backcross to D. yabuka. All QTL from each species affected pigmentation in the same direction, consistent with adaptive evolution driven by directional natural selection. The regions delimited by the QTL included many positional candidate loci in the pigmentation pathway, including genes affecting catecholamine biosynthesis, melanization of the cuticle, and many additional pleiotropic effects.
View details for DOI 10.1534/genetics.105.044412
View details for Web of Science ID 000232494400019
View details for PubMedID 15972457
View details for PubMedCentralID PMC1456512
Quantitative trait loci for sexual isolation between Drosophila simulans and D-mauritiana
2004; 167 (3): 1265-1274
Sexual isolating mechanisms that act before fertilization are often considered the most important genetic barriers leading to speciation in animals. While recent progress has been made toward understanding the genetic basis of the postzygotic isolating mechanisms of hybrid sterility and inviability, little is known about the genetic basis of prezygotic sexual isolation. Here, we map quantitative trait loci (QTL) contributing to prezygotic reproductive isolation between the sibling species Drosophila simulans and D. mauritiana. We mapped at least seven QTL affecting discrimination of D. mauritiana females against D. simulans males, three QTL affecting D. simulans male traits against which D. mauritiana females discriminate, and six QTL affecting D. mauritiana male traits against which D. simulans females discriminate. QTL affecting sexual isolation act additively, are largely different in males and females, and are not disproportionately concentrated on the X chromosome: The QTL of greatest effect are located on chromosome 3. Unlike the genetic components of postzygotic isolation, the loci for prezygotic isolation do not interact epistatically. The observation of a few QTL with moderate to large effects will facilitate positional cloning of genes underlying sexual isolation.
View details for DOI 10.1534/genetics.103.024364
View details for Web of Science ID 000223109300020
View details for PubMedID 15280240
View details for PubMedCentralID PMC1470931
Mate grasping in Drosophila pegasa
2002; 139: 545-572
View details for Web of Science ID 000176707700006
- Sperm transfer and copulation duration in two species of Hawaiian Drosophila Master's Thesis 1998
Is sexual selection and species recognition a continuum? Mating behavior of the stalk-eyed fly Drosophila heteroneura
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
1997; 94 (23): 12442-12445
If behavioral isolation between species can evolve as a consequence of sexual selection within a species, then traits that are both sexually selected and used as a criterion of species recognition by females should be identifiable. The broad male head of the Hawaiian picture-winged fly Drosophila heteroneura is a novel sexual dimorphism that may be sexually selected and involved in behavioral isolation from D. silvestris. We found that males with broad heads are more successful in sexual selection, both through female mate choice and through aggressive interactions. However, female D. heteroneura do not discriminate against hybrids on the basis of their head width. Thus, this novel trait is sexually selected but is not a major contributor to species recognition. Our methods should be applicable to other species in which behavioral isolation is a factor.
View details for Web of Science ID A1997YF39300037
View details for PubMedID 9356468
View details for PubMedCentralID PMC24989