A5101462203- Marine and fisheries research
- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Ocean Acidification Effects and Responses
- Oceanographic and Atmospheric Processes
- Genetic diversity and population structure
- Marine and coastal ecosystems
- Fish biology, ecology, and behavior
- Coral and Marine Ecosystems Studies
- Reservoir Engineering and Simulation Methods
- Identification and Quantification in Food
- Aquatic Ecosystems and Biodiversity
- Plant and soil sciences
- Forensic and Genetic Research
- Hydrocarbon exploration and reservoir analysis
- Scientific Computing and Data Management
- Amphibian and Reptile Biology
- Marine Bivalve and Aquaculture Studies
- Environmental Monitoring and Data Management
- Maritime Navigation and Safety
- Geochemistry and Geologic Mapping
- Coleoptera: Cerambycidae studies
- Marine animal studies overview
- Ichthyology and Marine Biology
- Geophysics and Gravity Measurements
Agostinho Neto University
2011-2022
Faculdade de Tecnologia e Ciências
2010
An annotated checklist of the species and subspecies rose chafers (Scarabaeidae: Cetoniinae) hitherto known from Angola is given. This list includes records recent entomological trips in that country (2014, 2015 2017) Portuguese museums private collections. A total 177 31 are recorded for Angola, including 32 endemic species/subspecies (15.4%). Some represented by only holotype specimen (some without locality) or type series. Others were based on a single specimen. Records four genera, one...
Despite increasing awareness of large-scale climate-driven distribution shifts in the marine environment, no study has linked rapid ocean warming to a shift and consequent hybridization fish species. This describes (0.8 °C per decade) coastal waters Angola-Benguela Frontal Zone over last three decades concomitant by temperature sensitive species (Argyrosomus coronus) southward from Angola into Namibia. In this context, across Economic Exclusive Zones will complicate management fishes,...
Contemporary patterns of genetic diversity and population connectivity within species can be influenced by both historical contemporary barriers to gene flow. In the marine environment, present day oceanographic features such as currents, fronts upwelling systems influence dispersal eggs/larvae and/juveniles/adults, shaping substructuring. The Benguela Current system in southeastern Atlantic is one oldest world, provides a unique opportunity investigate relative mechanisms evolutionary...
Multidisciplinary ocean observing activities provide critical information to satisfy ever-changing socio-economic needs, and require coordinated implementation. The upper oxycline (transition between high low oxygenated waters) is fundamentally important for the ecosystem structure can be a useful proxy multiple objectives connected Oxygen Minimum Zones (OMZs). VOICE (Variability of Oxycline its ImpaCt on Ecosystem) initiative demonstrates how societal benefits drive need integration...
Abstract Aim The Benguela Upwelling System ( BUS ) is a major biogeographical boundary in the south‐eastern Atlantic, but little known of effect historical permeability barrier on species distributed across region. We used phylogenetic, life‐history and morphological analyses to test influence regional oceanographic features genetic divergence, evolutionary history ecological divergence warm‐temperate fish, Atractoscion aequidens . Location Current, Atlantic Ocean. Methods Individual At....
Abstract The West Coast dusky kob Argyrosomus coronus is an understudied yet important fishery species in Angola. During a five-year study (2005–2009), the was recorded all sectors, but most inshore recreational southern Angola (Cunene Estuary to Namibe). Early juveniles (<300 mm total length, TL) were captured offshore artisanal at Praia Pinda, whereas (300–600 TL), subadults (600–870 and adults (>870 fisheries as far north Namibe, shoals of large adult fish (>1 000 occasionally purse-seine...
The fisheries for small pelagic species in Angola, Namibia and South Africa fulfil important social economic roles but have undergone substantial changes recent years, some of which are likely to be related climate change. This assessment vulnerability possible adaptation options the main stakeholder groups these was based on a framework encompassing ecological, broader governance context countries. Information gathered through consultations workshops as well from published information....
Blacktail seabream Diplodus capensis were sampled from proximate (10 km apart) exploited and unexploited areas in southern Angola to compare their population structures life-history parameters. Females dominated the larger size older age classes area. In area length frequency distributions more equitable, but there was a lack of large old individuals this due selective nature fishing gear. Growth zone deposition rate validated as being annual using mark-recapture chemically injected...
The genus Diplodus presents multiple cases of taxonomic conjecture. Among these the D. cervinus complex was previously described as comprising three subspecies that are now regarded separate species: cervinus, hottentotus and omanensis. exhibits a clear break in its distribution around Benguela Current system, prompting speculation Angolan South African populations flanking this area may be isolated warrant formal distinction. This study reports first integrated genetic [mitochondrial...
Allometric growth patterns of functional morphological variables that reflect resource use in fish were correlated with the diet Diplodus capensis southern Angola. A total 114 individuals (76–336 mm FL) collected for stomach content analysis and a further 35 (80–320 morphometric analysis. The major dietary components belonged to groups Chlorophyta, Cirripedia, Rhodophyta Bivalvia, made up 71.7% terms computed ranking index. There was clear ontogenetic shift small feeding predominantly on...
Excessive truncation of a population's size structure is often identified as an important deleterious effect exploitation, yet the on population persistence size-structure caused by exploitation not quantified due to data limitations. In this study, we estimate changes in eggs per recruit (EPR) using annual length-frequency samples over 9 year period assess two most recreational fishes southern Angola: west coast dusky kob (Argyrosomus coronus) and leerfish (Lichia amia). Using length-...
Allometric growth patterns of functional morphological variables that reflect resource use in fish were correlated with the diet Diplodus capensis southern Angola. A total 114 individuals (76–336 mm FL) collected for stomach content analysis and a further 35 (80–320 morphometric analysis. The major dietary components belonged to groups Chlorophyta, Cirripedia, Rhodophyta Bivalvia, made up 71.7% terms computed ranking index. There was clear ontogenetic shift small feeding predominantly on...
The population of Cape fur seal Arctocephalus pusillus at Ilha dos Tigres off the coast southern Angola is expanding. Until now only available biological information on has been its demographic parameters, and this insufficiency hindered our understanding population’s ecology. current study aimed to describe diet northernmost subspecies, based a once-off sampling opportunity. was described using scat analysis hard-part identification from scats collected in July 2014. Small pelagic fishes...