Linking herbivory and pollination: Costs and selection implications in Centrosema virginianum Bentham (Fabaceae: Papilionoideae)

This research first evaluated levels and type of herbivory experienced by Centrosema virginianum plants in their native habitat and how florivory affected the pollinator activity. I found that populations of C. virginianum in two pine rockland habitat fragments experienced higher herbivory levels (15% and 22%) compared with plants in the protected study site (8.6%). I found that bees (Hymenoptera) pollinated butterfly pea. Furthermore, I found that florivores had a negative effect in the pollinators visitation rates and therefore in the seed set of the population. ^ I then conducted a study using a greenhouse population of C. virginianum. I applied artificial herbivory treatments: control, mild herbivory and severe herbivory. Flower size, pollen produced, ovules produced and seeds produced were negatively affected by herbivory. I did not find difference in nectar volume and quality by flowers among treatments. Surprisingly, severely damaged plants produced flowers with larger pollen than those from mildly damaged and undamaged plants. Results showed that plants tolerated mild and severe herbivory with 6% and 17% reduction of total fitness components, respectively. However, the investment of resources was not equisexual. ^ A comparison in the ability of siring seeds between large and small pollen was necessary to establish the biological consequence of size in pollen performance. I found that fruits produced an average of 18.7 ± 1.52 and 17.7 ± 1.50 from large and small pollen fertilization respectively. These findings supported a pollen number-size trade-off in plants under severe herbivory treatments. As far as I know, this result has not previously been reported. ^ Lastly, I tested how herbivory influenced seed abortion patterns in plants, examining how resources are allocated on different regions within fruits under artificial herbivory treatments. I found that self-fertilized fruits had greater seed abortion rates than cross-fertilized fruits. The proportion of seeds aborted was lower in the middle regions of the fruits in cross-fertilized fruits, producing more vigorous progeny. Self-fertilized fruits did not show patterns of seedling vigor. I also found that early abortion was higher closer to the peduncular end of the fruits. Position of seeds within fruits could be important in the seed dispersion mechanism characteristic of this species. ^

The representation of motherhood in contemporary Catalan fiction

This dissertation analyzes four twenty-first-century Catalan novels which present the complex positions occupied by mothers in the last seven decades. Its conceptual framework posits motherhood as both a changing social construction and a political institution in a constant state of flux. In Inma Monsó´s Todo un carácter (2001), Eva Piquer´s Una victoria diferente (2002), Carme Riera´s La mitad del alma (2004), and Najat El Hachmi´s El último patriarca (2008) motherhood is explored as a metaphorical act, a gender-constructing experience, as well as the locus of expression with regard to gender and power relations. During the dictatorship of Francisco Franco (1939–1975), the majority of women were excluded from public spaces, and forced to stay home to care for their husbands and children. Furthermore, the state criminalized abortion, made contraception and divorce illegal, and promoted an ideal of femininity based on silence, sacrifice, and self-denial. The political changes of the late 1970s allowed women greater personal autonomy, and many women writers began to challenge stereotypical views of women’s social roles. Yet in the 70s and 80s, the narratives of Esther Tusquets, Ana María Moix, and Montserrat Roig represent the mother as a repressive figure whom the daughter must reject in order to liberate herself and regain her voice. It is not until the 90s when the novelists Mercedes Abad, Maruja Torres, Carme Riera, Imma Monsó, Eva Piquer, and María Barbal rehumanize the mother figure, recovering their matrilineal heritage. However, far from suggesting a unified trend in representations of motherhood in Catalan fiction, the diverse points of view of the novels under discussion here reveal that differences in attitudes among women authors about mother-daughter conflict are far from resolved. The theoretical background for this dissertation draws mainly on the work of Adrienne Rich, Nancy Chodorow, and Julia Kristeva. It includes psychoanalytic studies as well as sociologically based essays by Anna López Puig, Amparo Acereda, Jacqueline Cruz, Barbara Zecchi, Ángeles de la Concha, and Raquel Osborne, among others.

Living with Uncertainty: Acting in the Best Interests of Women

A recent multi-country study on hormonal contraceptives (HC) and HIV acquisition and transmission among African HIV-serodiscordant couples reported a statistically significant doubling of risk for HIV acquisition among women as well as transmission from women to men for injectable contraceptives. Together with a prior cohort study on African women seeking health services, these data are the strongest yet to appear on the HC-HIV risk. This paper will briefly review the Heffron study strengths and relevant biological and epidemiologic evidence; address the futility of further trials; and propose instead an alternative framework for next steps. The weight of the evidence calls for a discontinuation of progestin-dominant methods. We propose here five types of productive activities: (1) scaling injectable hormones down and out of the contraceptive mix; (2) strengthening and introducing public health strategies with proven potential to reduce HIV spread; (3) providing maximal choice to reduce unplanned pregnancy, starting with quality sexuality education through to safe abortion access; (4) expanding provider training, end-user counseling and access to male and female barriers, with a special renewed focus on female condom; (5) initiating a serious research agenda to determine anti-STI/HIV potential of the contraceptive cervical cap. Trusting women to make informed choices is critical to achieve real progress in dual protection.

Iraqi Birth Defects and the WHO Report

Since the U.S.-led invasion of Iraq in 2003, epidemics of birth defects and cancers are rising in many Iraqi cities. In 2012, the World Health Organization (WHO) and the Iraqi Ministry of Health (MoH) undertook a large-scale epidemiological study to determine the prevalence of birth defects in the Iraqi population. A report which appeared on the WHO website in September 2013, claims that "The rates for spontaneous abortion, stillbirths and congenital birth defects found in the [Iraq] study are consistent with or even lower than international estimates." This article discusses the severe shortcomings of this report and questions its reliability .