Prevalence and Incidence of Black Band Disease of Scleractinian Corals in the Kepulauan Seribu Region of Indonesia

Black band disease (BBD) is the oldest recognised disease associated with scleractinian corals. However, despite this, few BBD surveys have been conducted in the Indonesian archipelago, one of the world’s hot spots for coral diversity. In this study, we show that BBD was recorded in the reefs of Kepulauan Seribu, Indonesia, at the time of surveying. The disease was found to mainly infect corals of the genus Montipora. In some instances, upwards of 177 colonies (31.64%) were found to be infected at specific sites. Prevalence of the disease ranged from 0.31% to 31.64% of Montipora sp. colonies throughout the archipelago. Although BBD was found at all sites, lower frequencies were
associated with sites closest to the mainland (17.99 km), as well as those that were furthest away (63.65 km). Despite there being no linear relationship between distance from major population centers and BBD incidence, high incidences of this disease were associated with sites characterized by higher
levels of light intensity. Furthermore, surveys revealed that outbreaks peaked during the transitional period between the dry and rainy seasons. Therefore, we suggest that future surveys for disease prevalence in this region of Indonesia should focus on these transitory periods.

Band manager - Ett Content Management System för musikbranchaktörer

Summit Music Management är ett managementföretag som arbetar med en rad svenska artister. I deras arbetsuppgifter ingår även hantering av artisternas webbplatser, ett arbete som visat sig vara säkerhetskänsligt och svårt att få klart. Målet med projektet har varit att utveckla ett Content Management System för aktörer inom musikbranschen, vars syfte det är att förenkla det dagliga arbetet av dessa webbplatser. Systemet ska innehålla funktionalitet som gör det möjligt att skapa webbplatser åt artisterna samtidigt som det ska gå att underhålla och uppdatera textmaterial såväl som bilder som finns på webbplatserna. Systemet har skapats med tekniker, språk och ramverk som finns tillgängliga under fria licensavtal. Systemets grund är skapat med PHP-ramverket Laravel tillsammans med HTML, CSS och Twitter Bootstrap. Denna del fungerar som gränssnitt för administratörer där användaren kan logga in och skapa webbplatser. De webb-platser som skapas av systemet är skrivna i AngularJS tillsammans med HTML, CSS och Twitter Bootstrap. Mellan dessa delar finns ett REST-api skrivet i Laravel som sköter kommunikationen mellan komponenterna. Systemet arbetar mot en MySQL-databas där all data lagras och hämtas ifrån. Summit Music Management har förutom att leverera text- och bildmaterial, även fungerat somtestpanel för att kunna mäta systemets användbarhet. Testerna visade att systemet kan möta de behov som finns hos Summit Music Management men att det kan komma att behöva vidareutvecklas för att bättre passa en större kundgrupp och för att strama åt säkerhetsaspekterna ytterligare.

MEG-measured visually induced gamma-band oscillations in chronic schizophrenia: Evidence for impaired generation of rhythmic activity in ventral stream regions

Background: Gamma-band oscillations are prominently impaired in schizophrenia, but the nature of the deficit and relationship to perceptual processes is unclear. Methods: 16 patients with chronic schizophrenia (ScZ) and 16 age-matched healthy controls completed a visual paradigm while magnetoencephalographic (MEG) data was recorded. Participants had to detect randomly occurring stimulus acceleration while viewing a concentric moving grating. MEG data were analyzed for spectral power (1-100 Hz) at sensorand source-level to examine the brain regions involved in aberrant rhythmic activity, and for contribution of differences in baseline activity towards the generation of low- and highfrequency power. Results: Our data show reduced gamma-band power at sensor level in schizophrenia patients during stimulus processing while alpha-band and baseline spectrum were intact. Differences in oscillatory activity correlated with reduced behavioral detection rates in the schizophrenia group and higher scores on the “Cognitive Factor” of the Positive and Negative Syndrome Scale. Source reconstruction revealed that extra-striate (fusiform/lingual gyrus), but not striate (cuneus), visual cortices contributed towards the reduced activity observed at sensorlevel in ScZ patients. Importantly, differences in stimulus-related activity were not due to differences in baseline activity. Conclusions: Our findings highlight that MEG-measured high-frequency oscillations during visual processing can be robustly identified in ScZ. Our data further suggest impairments that involve dysfunctions in ventral stream processing and a failure to increase gamma-band activity in a task-context. Implications of these findings are discussed in the context of current theories of cortical-subcortical circuit dysfunctions and perceptual processing in ScZ.