“Blackout”, a confusing term sometimes denoting amnesia and at other times unconsciousness, has come in the alcoholism literature to designate memory loss associated with drinking alcohol. That alcoholics frequently experience amnesic episodes has been recognized since Bonhoeffer's time, and more recently Jellinek (1952) and others have popularized the notion that blackouts are an important predictor of alcoholism, a conclusion based on questionnaire data indicating that blackouts occur early in the course of alcoholism, well before the appearance of other alcoholic symptoms. Jellinek also believed that alcoholics often had blackouts after ingestion of modest, subintoxicating amounts of alcohol.

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Pre-exposure prophylaxis (PrEP) is effective in preventing HIV infections among men who have sex with men (MSM). PrEP uptake and adherence remain low and product preferences are unknown, especially among young African American MSM who are most at-risk. We conducted 26 qualitative interviews from 2014–2016 among young adult HIV-negative African American MSM regarding PrEP product preferences in Missouri. While the pill and injectable were most liked of all modalities, about a quarter preferred rectal products or patches. Most participants preferred a long-acting injectable (LAI) to daily oral pills due to better medication adherence and a dislike for taking pills. Many participants preferred daily oral pills to on-demand oral PrEP due to the inability to predict sex and the perception that insufficient time or medication would not achieve HIV protection with on-demand. A fear of needles and the perception that there would not be therapeutic levels for a long duration were concerns with injectable PrEP. Study findings highlight the need for a range of prevention options for African American MSM and can inform PrEP product development as well as dissemination and implementation efforts.

We hypothesized that most recruitment of striped bass Morone saxatilis in the Santee-Cooper system. South Carolina, comes from river-spawn egg cohorts transported at the right time to high-quality nursery habitat, generally located in or near Lake Marion, a large reservoir within the system. Because striped bass produce a superabundance of eggs, only a small portion of the total egg production must develop in favorable nursery habitat to produce good recruitment in any year. In a 3-year study, we assessed temporal variability in egg mortality, compared the survival of progeny cohorts, and monitored abundance of juveniles and zooplankton in nursery areas. Growth rates and hatch dates of juveniles were estimated from otoiiths. Mortality rates and hatching locations varied among egg cohorts. In the best recruitment years, 1988 and 1990, highest survival was associated with eggs hatched during the early half of the spawning season in Lake Marion. Zooplankton densities were higher in Lake Marion than in the spawning tributaries, suggesting that the lake was a superior nursery habitat. Growth rate of juveniles was highest in 1990. Water management at upstream dams in the Santee-Cooper system might increase recruitment by optimizing temperature and flow so that the maximum possible number of eggs hatch in upper Lake Marion.

We detected 2 species of monogenean gill worms, Pseudodactylogyrus bini (Kikuchi, 1929) Gusev, 1965 and P. anguillae (Yin & Sproston, 1948) Gusev, 1965 (Monopisthocotylea: Pseudodactylogyridae), on American eel Anguilla rostrata in 2 rivers in South Carolina, USA. One of these, P. anguillae, was reported 5 yr ago from Nova Scotia; as well as in South Carolina, we also discovered it in 2 localities in Chesapeake Bay. Differences in the morphologies of specimens of either species of worm from North America and northeastern Asia were negligible. Similarly, the level of variation in sequences in the ITS2 (internal transcribed spacers) region of ribosomal RNA was minor, and not consistent with geographical origin. These data indicate that these monogeneans invaded North America only recently, possibly in parallel with the nematode Anguillicola crassus (which is known to have been introduced with commercial imports of foreign eels). We map the current global occurrence of these monogeneans, and conclude that their dispersal from northeastern Asia was largely as a result of the eel trade, and has probably been secondarily augmented by longshore migration of infected eels, and possibly also by transport in ballast waters. With present technology, all eel stocks must still be collected from the wild; unless shipments are disinfected at quarantine, these and other eel pathogens (such as A. crassus) are likely to continue to colonise other regions of the world.KEY WORDS: Biological invasion · Anguilla · Pseudodactylogyrus · Ballast · Monogenean · Pest Resale or republication not permitted without written consent of the publisherDis Aquat Org 44: [53][54][55][56][57][58][59][60] 2001 the world is largely unknown. However, the documentation of their global occurrence on the gills of all 15 species of eels is now in progress. In the present study, we report the first occurrence of 2 species of worms in the genus Pseudodactylogyrus on wild American eels A. rostrata in the United States. Morphological characters alone may not always be adequate for recognising populations that have been isolated geographically over evolutionary time. Hence, we evaluate the hypothesis that species of Pseudodactylogyrus are native to North America by comparing both their morphologies and gene sequences with congeners from other continents. An additional aim was to update the known distribution of these pests around the world by compiling all known locality records in the literature. MATERIALS AND METHODSWild American eels Anguilla rostrata were electrofished from the South Fork Edisto River, and in former rice fields alongside the Cooper River, in South Carolina, USA. Eels from Chesapeake Bay, Maryland, were purchased live from commercial fishermen, who had trapped them in the Wicomico and Choptank Rivers. Details of numbers and sizes of eels, collection dates and salinities are presented in Table 1 'Results'. Eels were transported to laboratories and temporarily held until examination. Eels were anaesthetised in a solution of trican...

The Santee–Cooper system in South Carolina, USA, is a complex of reservoirs, rivers, and canals. The endangered shortnose sturgeon Acipenser brevirostrum inhabits the rivers below the reservoirs and has also occasionally been reported anecdotally in the reservoirs themselves. During 1998–1999, we conducted a study to determine whether shortnose sturgeon were reproducing in the reservoirs, and if so, to evaluate habitat use and degree of separation from the riverine groups. Fourteen shortnose sturgeon were captured from the reservoirs, and all (even gravid females) appeared qualitatively less robust than riverine fish previously captured below one of the dams. Ten of the fish were implanted with transmitters and tracked at least once per week. Fish tracked in the upper reservoir, Lake Marion, stayed in the upper portion of that lake or in tributary streams flowing into it. We documented seasonal movements among four primary areas of upper Lake Marion and its tributaries. A spawning site on one of the tributaries, the Congaree River, was verified by collection of viable eggs. Genetic analysis demonstrated significant differences between samples from the Santee–Cooper reservoirs and three nearby coastal rivers. Cooper River samples, however, were not significantly different from reservoir samples, although appreciable differences in haplotype frequencies were observed. The need for a larger sample size was apparent. Although telemetry, spawning, genetic, and observational evidence suggests that the shortnose sturgeon in the reservoirs form a separate population segment, the results are not conclusive because possible downstream movement, especially of juveniles, through the dams has not been investigated.

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