Larval fish assemblages in nearshore waters of southeast Gulf of California: vertical and temporal patterns

The influence of salinity and temperature on larval fish assemblages, as well as, temporal and vertical patterns on larval fish assemblages off the inlet of the Presidio River, southeast coast of the Gulf of California were evaluated. Samplings for ichthyoplankton and environmental parameter measurements were carried out at three depths, in five sampling sites, during September and December 1994, and April and June 1995. Anchovies and herrings (Clupeiformes) were the most abundant larval fish accounting for 77% of the total abundance. A significant relationship between salinity and the abundance of larval herrings (Opisthonema medirastre and O. dovii) and between the water temperature and the abundance of the weakfish (Cynoscion reticulatus) was found. Anchovies (Anchoa lucida, A. walkeri, and A. nasus) were present in all sampled months, while O. medirastre and O. dovii occurred in December and June, and C. reticulatus in September. Larvae of pelagic fish were more abundant near the surface, while larvae of demersal fish were more abundant near the bottom. The present study, by emphasising the importance of considering temporal and vertical changes in larval fish assemblages in coastal environments with ecological and economic importance, will be useful for designing more efficient sampling programs.(AU)

Se evaluó la influencia de la salinidad y la temperatura, así como patrones temporales y verticales en la comunidad de larvas de peces enfrente del río Presidio, costa sudeste del Golfo de California. Los muestreos de ictioplancton y las mediciones de los parámetros ambientales fueron realizados a tres profundidades, en cinco sitios de muestreo, durante septiembre y diciembre de 1994, y abril y junio de 1995. Las anchoas y sardinas (Clupeiformes) fueron las larvas de peces más abundantes representando el 77% de la abundancia total. Se encontró una relación significativa entre la salinidad y la abundancia de larvas de sardinas (Opisthonema medirastre and O. dovii), y entre la temperatura del agua y la abundancia de la corvina rayada (Cynoscion reticulatus). Las anchoas (Anchoa lucida, A. walkeri y A. nasus) estuvieron presentes en todos los meses muestreados, mientras que O. medirastre y O. dovii ocurrieron en diciembre y junio, y C. reticulatus en septiembre. Las larvas de peces pelágicos fueron más abundantes cerca de la superficie, mientras que las larvas de peces demersales fueron más abundantes cerca del fondo. El presente estudio, al enfatizar la importancia de considerar los cambios temporales y verticales en el ensamblaje de larvas de peces en ambientes costeros con importancia ecológica y económica, será útil para diseñar programas de muestreo más eficientes.(AU)

Deliberate self-harm by burning: a retrospective case controlled study.

Thirty-seven referrals to a liaison psychiatry service after deliberate self-harm by burning were compared with a control group of people referred to the same service after deliberate self-harm by other means. We found that the group who self-harmed by burning were more likely to have psychotic symptoms, be prescribed psychotropic medication at the time of the self-burns and to be psychiatric inpatients at the time of self-harm compared with controls. The implications of the findings are discussed. The development of good communication and joint working between staff in psychiatry and burns units is particularly important to support the care of this group of patients.

An audit of pregnant women with severe mental illness referred during the first 2 years of a new perinatal mental health service.

The importance of identifying pregnant women at high risk of postpartum psychotic illness has been highlighted by recent enquiries and guidelines. It has been recommended that these women are referred to perinatal mental health services, and that individualised care plans are made prior to delivery. This audit describes a cohort of 45 women, referred to a new perinatal mental health service, with a history of psychotic illness or at risk of developing a postpartum psychotic episode. It describes the characteristics of this group, and the outcomes in terms of relapse and whether their children remained in their care. Thirty-nine women (87%) were seen for assessment. Sixty-seven per cent were under the care of a community mental health team. Twenty-one (53.8%) were well at the time of referral. Planned pregnancies were uncommon (15%). All women seen antenatally had care plans written to address the high risk of postpartum relapse. Ten (26%) women had psychiatric admissions during pregnancy. Fifteen (38%) relapsed or had admissions during the first postpartum year. At 1 year postpartum, 74% women had care of their children; 18% children had been adopted or were in foster care; and the outcome was unknown for 8%.