HOME >> BIOLOGY >> NEWS
Even fish don't swim well when they're young!

Do you remember learning to swim? Thrashing around, floundering, until suddenly it all clicks into place and a few feeble strokes of doggy-paddle propel you away from your parent's arms. Surely, you think, fish must be born as expert swimmers. Actually, fish larvae are pretty feeble when it comes to an efficient mode of swimming called 'burst-and-coast'. Dr Ulrike Mller from Wageningen University studies how fish swim: "Fish larvae are the most critical life history stage. In marine fish more than 99% of the mortality occurs in the larval stage so anything that might explain what holds them back is useful". Mller will present her research on Monday 3rd April, at the Society for Experimental Biology's Annual Main Meeting in Canterbury [session A5].

The 'burst-and-coast' method of swimming involves alternating stages: the fish power forward in a 'burst' and then hold their body straight to 'coast'. Dr Mller and her colleagues might have found what it is that prevents larvae of the zebrafish from reaching top speeds: the larvae cannot maintain their body in a horizontal position while coasting. The research team think this is because larvae don't have the help of an adult swimbladder and have only small, ineffective side-fins. This lack of control in early days means that the larvae suffer a lot of drag during the coasting phase and this could be something that affects other types of fish. "Many fish larvae hatch without fully formed pectoral fins and all hatch without a swimbladder, so similar problems could occur for them", predicts Mller.

This conclusion is all the more profound because it refutes two previous theories of poor hatchling swimming, one focusing on the burst phase and the other on the coast. The former of the two explanations suggests that because the larvae are not very heavy they may not gain much momentum in the burst phase to carry over into the coast phase, while the latter theory states that when the larvae are very small they e
'"/>

Contact: Lucy Moore
l.moore1@lancaster.ac.uk
786-664-7434
Society for Experimental Biology
3-Apr-2006


Page: 1 2

Related biology news :

1. Monkeys dont go for easy pickings
2. Metabolic syndrome -- dont blame the belly fat
3. It dont mean a thing if it aint got that (modern) swing
4. How dogs dont ape
5. Flies dont buzz about aimlessly!
6. Test finds manufactured nanoparticles dont harm soil ecology
7. Some caterpillers just dont want to grow up
8. When your brain talks, your muscles dont always listen
9. Why our shifty eyes dont drive us crazy
10. Teenagers know about condoms ... so why dont they use them?
11. Why dont all moles progress to melanoma?

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/6/2020)... , ... February 06, 2020 ... ... research organization (CRO) specializing in complex interventional medical device and pharmaceutical trials, ... Regulatory Strategy. In this newly established role, Dorothy oversees the development and ...
(Date:2/5/2020)... ... February 05, 2020 , ... LabKey has released Sample Manager, ... to sample processing within laboratories. , Built with input from a Product ... fields, LabKey Sample Manager has been designed with an intuitive user interface providing ...
(Date:1/29/2020)... ... January 29, 2020 , ... Jason Burke has joined CREO, ... providing consulting services for strategy, research and development and data governance to healthcare ... Managing Partner of CREO, an innovative management consulting and advisory firm based in ...
Breaking Biology News(10 mins):
(Date:1/27/2020)... , ... January 27, 2020 , ... ... it has secured financing from strategic investors led by Halma plc , ... existing investors Sonion, TDF Ventures, GII LLC, and WSJ Joshua Fund. A representative ...
(Date:1/22/2020)... ... January 20, 2020 , ... Brilliant, maker of ... the largest independent electronics distributor in the US, to make it easy for ... with leading smart home products from a single fulfillment partner. Ranging from entry-level ...
(Date:1/10/2020)... ... January 09, 2020 , ... ... services, today announced the acquisition of Cunesoft, a move that expands the company’s ... objectives of life sciences companies. , Based in Munich, Germany, Cunesoft provides intelligent ...
(Date:1/7/2020)... ... January 07, 2020 , ... Vuja De Sciences (“Vuja De”), ... recurrence, today announced the appointments of Chand Khanna, DVM, PhD, DACVIM (Onc), and Dr. ... Vuja De said, “We are delighted to welcome Chand and Lee as new directors. ...
Breaking Biology Technology:
Cached News: