The planktonic eggs and larvae are small and are best viewed through a microscope and therefore unknown to most people. Many of the species or close relatives are found also in more northern waters, and species such as monkfish, pearlside, horse mackerel, blackbelly rosefish (jacopever), gurnard and John dory are well known.
Larvae of monkfish/anglerfish (Lophius vomerinus) ca. 5mm. The dorsal, pectoral and pelvic fins are very elongate at this stage.
During our surveys in Namibia and South Africa we manage to identify most eggs and larvae. Since this is a relatively cold upwelling area, few species dominates and these are well documented in the literature even in the egg and larval stages. The challenge increases when we sometimes cross the front between the cold Benguela water and the warmer water of the Angola current. The number of species increase and many of the species are not well documented on the egg and larval stage.
In cooperation with local institutions, IMR has conducted several hake surveys in the region. The main goal has been to assess the stock size, but recently the focus has been directed towards life history studies and particularly to investigate whether the stocks of hake are shared between Namibia and South Africa. During last year's survey, we tried to map the spawning areas and the eggs and larval drift routes.
Yvonne Robberstad | alfa
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A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
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