Navigation Links
Baby fish 'smell their way home'

se what the home reef smelt like, when they left it only a day or so after hatching."

The team exposed tiny fish larvae in a tank to pure streams of water from four different reefs. To their amazement, within minutes a surprisingly high percentage of baby fish had congregated in the water flow from their home reef.

"It was a lot more than you'd expect to happen by pure chance ?and it applied, in differing degrees, across several species of fish," Mike says.

The fish could also be responding to other stimuli, including distant noise off a reef and the behaviour of other fish, but the team concluded that smell was probably the dominant factor leading the babies home.

"Every reef gives off its own unique chemical signature, a rich mixture of the proteins and amino acids emitted by corals, all the plankton and mucus from its life. We think baby fish can pick this up and distinguish it from other reefs.

"We think some fishes then choose currents that smell like 'home' and swim up them. The ones that cannot do this perish. The ones that get home preserve the unique 'ethnic' make-up of their tribe ?and so continue the process of evolving into separate new species."

How the fish learn the unique smell of home is a mystery still. The researchers theorise that it is imprinted on them either when they are an egg inside their mothers, a fertilised egg swept around on the bottom, or new-hatched fry loose in the stream or brooded in their parents' mouths.

"An egg, even a fry, hasn't a fully developed sense of smell, but it may have a way of absorbing the local molecules and then recognizing their signature as "home" when it grows up a bit and is ready to settle," Mike says.

"This evidence that individual coral reefs play such a key role in the emergence of new species is a fresh reason to take even greater care in how we look after them."


'"/>

Source:James Cook University


Page: 1 2

Related biology news :

1. Priming embryonic stem cells to fulfill their promise
2. Protein offers way to stop microscopic parasites in their tracks
3. Flocking together: Study shows how animal groups find their way
4. Where bacteria get their genes
5. Chickadees can help humans get their bearings
6. Bacteria use hosts immune response to their competitive advantage
7. Structures of marine toxins provide insight into their effectiveness as cancer drugs
8. Beauty queens urge girls not to sacrifice their bones
9. Researchers learn how blood vessel cells cope with their pressure-packed job
10. Stem cells electric abilities might help their safe clinical use
11. Multiple genes permit closely related fish species to mix and match their color vision
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Baby fish smell their way home

(Date:9/30/2014)... Journal of Medicine reports positive results of a ... the subset of lung cancer marked by rearrangement of ... patients with advanced non-small cell lung cancer testing positive ... percent, with 3 complete responses and 33 partial responses. ... the disease to resume its growth after being slowed ...
(Date:9/30/2014)... Pollution in urban and farm runoff in Hawaii is ... finds. , The study, published Tuesday in the ... in the runoff ends up in algae that the ... animals, eyes, flippers and internal organs. , Scientists at ... Oceanic and Atmospheric Administration (NOAA) conducted the study to ...
(Date:9/30/2014)... what goes wrong with your muscles because of age, disease ... actually is. That,s where a new research report published in ... comes in. In the report, a team of ... can help scientists "see" which genes are active in an ... gene activity and that men have approximately 400 more active ...
Breaking Biology News(10 mins):NEJM: Crizotinib effective in Phase 1 trial against ROS1 lung cancer 2Pollution linked to lethal sea turtle tumors 2Pollution linked to lethal sea turtle tumors 3Scientists identify which genes are active in muscles of men and women 2
... ( Glis glis ) are busy caring for their young ... their fat stores to cope with the upcoming winter. Unfortunately, ... and dormice have long been viewed as a special delicacy. ... up for eating, which explains the "edible" part of their ...
... Claremont, CA A chance find by a high ... complete fossil skeleton yet known from the iconic tube-crested ... the Raymond M. Alf Museum of Paleontology at The ... strange headgear before it celebrated its first birthday. Three-dimensional ...
... in the soil and leaks out as nitrate for decades ... France and at the University of Calgary say in a ... had been applied to crops in 1982, about 15 per ... matter, the scientists found. After three decades, approximately 10 ...
Cached Biology News:Fat and fit 2High school student discovers skeleton of baby dinosaur 2High school student discovers skeleton of baby dinosaur 3Nitrogen fertilizer remains in soils and leaks towards groundwater for decades, researchers find 2Nitrogen fertilizer remains in soils and leaks towards groundwater for decades, researchers find 3
(Date:10/1/2014)... 30, 2014 New applications of structures ... have evolved in nature over millennia are featured in ... for applications in biophotonics in the October issue ... journal is published by SPIE, the international society for ... of the peer-reviewed articles are accessible via open access. ...
(Date:10/1/2014)... The U.S. Department of Labor has awarded ... as part of the Trade Adjustment Assistance Community College ... by the Department of Labor and Department of Education. ... E. Perez and Secretary of Education Arne Duncan announced ... to nearly 270 colleges across the country. , ...
(Date:9/30/2014)... D.C., September 30, 2014 Applying a well-known ... researchers at Harvard University has demonstrated the ability ... -- work that holds promise for making future, ... detailing the sides of next-gen rocket ships and ... light passes through oil in water, it becomes ...
(Date:9/30/2014)... Sept. 30, 2014 Report Details ... highest potential revenues Do you want to find ... you revenue predictions for those biological drugs from ... you find financial data, R&D trends, opportunities and ... sales forecasts to 2024 at overall world market, ...
Breaking Biology Technology:Biomimetic and bioinspired materials enable new healthcare options, reports Journal of Biomedical Optics 2Biomimetic and bioinspired materials enable new healthcare options, reports Journal of Biomedical Optics 3U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 2U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 3U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 4Taking thin films to the extreme 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 4Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 5
... Quantified - ... HOPKINTON, Mass., April 24 Caliper Life,Sciences, Inc. ... and services for,drug discovery and life sciences research, today ... coast business operations to,reduce overall facility costs and improve ...
... Therapeutics,Inc. (Nasdaq: FOLD ), today announced that John ... corporate update at the Morgan,Stanley Global Healthcare Unplugged Conference ... the Ritz-Carlton in Key Biscayne, Florida., The presentation ... visiting,Amicus, website at http://www.amicustherapeutics.com . A replay of ...
... Inc.,(Nasdaq: CEPH ) today announced its receipt ... an Abbreviated New Drug Application (ANDA),submitted to the ... Inc., requesting approval to market and sell a ... its Notice,Letter, Watson alleges that the U.S. Patent ...
Cached Biology Technology:Caliper Life Sciences Reports West Coast Consolidation of Operations 2Caliper Life Sciences Reports West Coast Consolidation of Operations 3Caliper Life Sciences Reports West Coast Consolidation of Operations 4Cephalon Notified of Generic Fentanyl Buccal Tablet Filing 2Cephalon Notified of Generic Fentanyl Buccal Tablet Filing 3
... On-Demand Cytometry The Guava ... blue laser based multiparameter cytometer with built-in ... you can screen plates of cells and ... of manipulating multiple tubes or having the ...
A flexible 24-48 hour DNA sequencing service. Samples may be shipped in standard 1.5mL tubes. Oligo synthesis and DNA preparation available. Read lengths up to 850 Phred 20 bases. Universal primers p...
... Agencourt offers single pass sequencing of ... is fueled by our high performance ... million Phred20 bases per day. The ... pass sequencing customers are rapid turnaround, ...
... Facility , Galaxy LIMS, Sophisticated Bioinformatics , ... scientists ,We offer individual sample sequencing of ... for single or double strand publication quality. ... DNA of interest is 1.3 to 7 ...
Biology Products: