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 Bioinvasion on the rise
15.02.2017 | Universität Konstanz

nachricht Litter Levels in the Depths of the Arctic are On the Rise
10.02.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

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: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Microhotplates for a smart gas sensor

22.02.2017 | Power and Electrical Engineering

Scientists unlock ability to generate new sensory hair cells

22.02.2017 | Life Sciences

Prediction: More gas-giants will be found orbiting Sun-like stars

22.02.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>