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:7/10/2020)... ... July 09, 2020 , ... Today CJ BIO announced the ... share insight on the “fifth taste” phenomenon that is revolutionizing ingredient mixes, nutritional content ... will be live on Monday, July 13, 2020 at11:00 AM (CDT) during SHIFT20, the ...
(Date:7/1/2020)... ... July 01, 2020 , ... Cure Glioblastoma, a ... most common and aggressive adult brain cancer—announced today the appointments of its first ... charged with supporting the organization’s initiatives and overall vision. , "Senior Fellows are ...
(Date:6/23/2020)... ... June 23, 2020 , ... First Aid Africa, a Scottish ... supplier and manufacturer of innovative portable renewable energy equipment, have announced the success ... the COVID-19 pandemic in Zambia. , One of Renovagen’s FAST FOLD portable solar ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... July 29, 2020 , ... eSource has long been touted as the ... the history of eSource, the reasons it did not take off as quickly as ... source, the industry is moving towards capturing data electronically for clinical trials and then ...
(Date:7/22/2020)... ... 2020 , ... Join experts from Reed Tech , Gary Saner, Sr. ... one hour live webinar on Thursday, August 13, 2020 at 11am EDT ... medical devices. Specifically, for medical devices, the NMPA has departments dealing with medical device ...
(Date:7/18/2020)... ... July 16, 2020 , ... Medial EarlySign , a ... prevention of high-burden diseases, and Centric Consulting, a business and technology consulting firm, ... existing data in order to identify and prioritize patients for care. , Combining ...
(Date:7/10/2020)... ... July 09, 2020 , ... ... of Technology (MIT) has expanded the company’s exclusive license to include clinical ... the point-of-care diagnostic market, focusing initially on the SARS-CoV-2 biosensor. CANARY’s™ ...
Breaking Biology Technology:
Cached News: