The grass squid Pickfordiateuthis pulchella is a paedomorphic loliginid.

The wide disparity in adult body size observed both within and among animal taxa has long attracted widespread interest, with several general rules having been proposed to explain trends in body size evolution. Adult body size disparity among the cephalopod mollusks is remarkable, with adult body sizes ranging from a few centimeters to several meters. Some of the smallest cephalopods are found within Pickfordiateuthis, a group comprising three described species of squid found in the western Atlantic and tropical eastern Pacific. Pickfordiateuthis pulchella, the type species of the genus, was initially proposed to be closely related to the loliginid squids (Loliginidae), with subsequent descriptions of additional species supporting a placement within Loliginidae. Pickfordiateuthis is remarkable in that all species reach sexual maturity at about one-fifth to one-tenth the size seen in most loliginid species. To date, no phylogenetic analyses have included representatives of Pickfordiateuthis. To infer the phylogenetic position of Pickfordiateuthis and explore its implications for body size evolution, we collected specimens of Pickfordiateuthis pulchella from Brazilian waters and sequenced regions of two loci-the mitochondrial large ribosomal subunit (rrnL a.k.a. 16S) gene and the nuclear gene rhodopsin. Maximum likelihood and Bayesian analyses of these sequences support a placement of Pickfordiateuthis pulchella as sister to a clade comprising the Western Hemisphere loliginid genera Doryteuthis and Lolliguncula. Analyses of body size evolution within Loliginidae suggest that a shift to a smaller body size optimum occurred along the lineage leading to P. pulchella, with some evidence of shifts toward larger sizes in the ancestors of Loligo and Sepioteuthis; these inferences seem to be robust to phylogenetic uncertainty and incomplete taxon sampling. The small size and juvenile-like morphological traits seen in adult Pickfordiateuthis (e.g., sepiolid-like fins and biserial sucker arrangement in the tentacles) may be due to paedomorphosis.

Perceptions of pregnancy complications in Haiti.

OBJECTIVE: To determine the incidence of perceived pregnancy complications and associated factors. METHODS: During a census, 450 women identified themselves as pregnant and 388 were interviewed postpartum. RESULTS: Complications were reported by 58.6%. Bleeding post-delivery was the most frequent complication (42.5%), followed by great pain (33.8%), bleeding during pregnancy (20.1%), and fever post-delivery (11.6%). Prenatal care at either a dispensary or a clinic was associated with reports of bleeding during pregnancy (odds ratio [OR] 9.06; 95% confidence interval [CI], 1.71-48.00 and OR 7.58; 95% CI, 1.53-37.48, respectively). Women who visited a doctor were less likely to report bleeding during pregnancy (OR 0.20; 95% CI, 0.08-0.55) or fever post-delivery (P=0.015). Herb use was associated with reported bleeding during pregnancy (OR 2.22; 95% CI, 1.12-4.40) and great pain (OR 1.94; 95% CI, 1.05-3.58). CONCLUSION: The perceived pregnancy complication rate in Haiti is high and is associated with access to health care. The association between use of herbs and pregnancy complications warrants investigation.

Maternal mortality and the consequences on infant and child survival in rural Haiti.

OBJECTIVE: To determine the odds of death of children when a woman of reproductive age dies from maternal or non maternal causes in rural Haiti. METHODS: Deaths among reproductive aged women between 1997 and 1999 in and around Jeremie, Haiti were classified as maternal or non maternal and matched to female, non-deceasesd controls based on village, age, and parity. Information regarding the health and survival of all of the offspring under 12 years old of the identified women was extracted from the Haitian Health Foundation (HHF) Health Information System (HIS). Additional demographic information was obtained through interviews with the mothers for controls and with family members for cases. Two analyses on child death were conducted; 1) the odds of death for each individual child after a mother's death and 2) the odds of one of the children in a family dying after the mother's death. FINDINGS: If a family experiences a maternal death, that family has a 55.0% increased odds of experiencing the loss of a child less than 12, whereas when a non maternal death occurs, no increased odds exists. When children of cases were compared to children of controls, mean weight z-scores were the same for the periods corresponding to before and after the maternal deaths. After a maternal death, dosage of BCG (Bacillus Calmette-Guerin) TB (tuberculosis) immunization for the surviving child is significantly lower, as are dosage of measles immunization and the first dose of vitamin A. CONCLUSIONS: This study shows that a maternal death significantly effects the survival of children in a family in a greater way than a non maternal death.