Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Pictures from a microscopic world

10.08.2006
During a survey in South African and Namibian waters last year, fish eggs and fish larvae from a number of species were collected by scientists from the Institute of Marine Research (IMR) in cooperation with scientists from the region.

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
Further information:
http://www.imr.no/english/news/news_2006/a_microscopic_world

More articles from Ecology, The Environment and Conservation:

nachricht Dead trees are alive with fungi
10.01.2018 | Helmholtz Centre for Environmental Research (UFZ)

nachricht Management of mountain meadows influences resilience to climate extremes
10.01.2018 | Max-Planck-Institut für Biogeochemie

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

Im Focus: A thermometer for the oceans

Measurement of noble gases in Antarctic ice cores

The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Novel 3-D printing technique yields high-performance composites

16.01.2018 | Materials Sciences

New application for acoustics helps estimate marine life populations

16.01.2018 | Life Sciences

Fast-tracking T cell therapies with immune-mimicking biomaterials

16.01.2018 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>