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<p class=MsoNormal><b><span style='font-size:18.0pt;font-family:"Arial","sans-serif";
color:#111111;letter-spacing:-.35pt'>Fish recorded singing dawn chorus on reefs
just like birds<o:p></o:p></span></b></p>
<p class=author-byline style='margin:0in;margin-bottom:.0001pt;background:white;
vertical-align:baseline'><span style='font-family:"Arial","sans-serif";
color:#333333'>By<span class=apple-converted-space> </span><span
class=author><span style='border:none windowtext 1.0pt;padding:0in'>Greta
Keenan </span></span><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial","sans-serif"'>21
September 2016<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
color:#111111;letter-spacing:-.35pt'><a
href="https://www.newscientist.com/article/2106331-fish-recorded-singing-dawn-chorus-on-reefs-just-like-birds/?cmpid=NLC%7CNSNS%7C2016-2909-newGLOBAL&utm_medium=NLC&utm_source=NSNS">https://www.newscientist.com/article/2106331-fish-recorded-singing-dawn-chorus-on-reefs-just-like-birds/?cmpid=NLC%7CNSNS%7C2016-2909-newGLOBAL&utm_medium=NLC&utm_source=NSNS</a><o:p></o:p></span></p>
<h1 style='mso-margin-top-alt:7.5pt;margin-right:0in;margin-bottom:9.0pt;
margin-left:0in;vertical-align:baseline'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:#111111;letter-spacing:-.35pt'><o:p> </o:p></span></h1>
<p class=MsoNormal align=center style='text-align:center;line-height:19.8pt;
background:white;vertical-align:baseline'><span style='font-size:13.0pt;
font-family:"Arial","sans-serif";color:#A42E29'><img border=0 width=844
height=487 id="Imagen_x0020_1" src="cid:image003.jpg@01D21A81.FCFA4850"
alt="Bat fish sing from the same song sheet"></span><span style='font-size:
13.0pt;font-family:"Arial","sans-serif";color:#A42E29'><o:p></o:p></span></p>
<p class=MsoNormal align=center style='text-align:center;line-height:19.8pt;
background:white;vertical-align:baseline'><span style='font-size:13.0pt;
font-family:"Arial","sans-serif";color:#A42E29'>Bat fish ballad </span><span
style='font-size:7.5pt;font-family:"Arial","sans-serif";color:#333333'>Norbert
Probst/Getty<o:p></o:p></span></p>
<p class=MsoNormal align=center style='text-align:center;line-height:19.8pt;
background:white;vertical-align:baseline'><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#333333'><o:p> </o:p></span></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:9.0pt;
margin-left:0in;background:white;vertical-align:baseline'><span
style='font-size:11.5pt;font-family:"Arial","sans-serif";color:#333333'>The
ocean might seem like a quiet place, but listen carefully and you might just
hear the sounds of the fish choir.<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'>Most of this underwater music comes from<span
class=apple-converted-space> </span><a
href="https://www.newscientist.com/article/2104958-this-fish-has-a-love-song-and-it-sounds-like-a-windshield-wiper/"><span
style='color:#179CCE;border:none windowtext 1.0pt;padding:0in'>soloist fish</span></a>,
repeating the same calls over and over. But when the calls of different fish
overlap, they form a<span class=apple-converted-space> </span><a
href="https://www.newscientist.com/article/mg20527533-500-oceanology-undersea-dawn-chorus-off-english-coast/"><span
style='color:#179CCE;border:none windowtext 1.0pt;padding:0in'>chorus</span></a>.<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'><o:p> </o:p></span></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:9.0pt;
margin-left:0in;background:white;vertical-align:baseline'><span
style='font-size:11.5pt;font-family:"Arial","sans-serif";color:#333333'>Robert
McCauley and colleagues at Curtin University in Perth, Australia, recorded
vocal fish in the coastal waters off Port Headland in Western Australia over an
18-month period, and identified seven distinct fish choruses, happening at dawn
and at dusk. You can listen to three of them here:<o:p></o:p></span></p>
<p class=MsoNormal style='line-height:19.8pt;background:white;vertical-align:
baseline'><span class=mejs-offscreen><span style='font-size:13.0pt;font-family:
"Arial","sans-serif";color:#A42E29;border:none windowtext 1.0pt;padding:0in'>Audio
Player</span></span><span style='font-size:13.0pt;font-family:"Arial","sans-serif";
color:#A42E29'><o:p></o:p></span></p>
<p class=MsoNormal align=center style='text-align:center;mso-line-height-alt:
8.25pt;background:#222222;vertical-align:baseline'><span
class=mejs-currenttime><span style='font-size:8.5pt;font-family:"Arial","sans-serif";
color:white;border:none windowtext 1.0pt;padding:0in'>00:00</span></span><span
style='font-size:8.5pt;font-family:"Arial","sans-serif";color:white'><o:p></o:p></span></p>
<p class=MsoNormal align=center style='text-align:center;mso-line-height-alt:
8.25pt;background:#222222;vertical-align:baseline'><span class=mejs-duration><span
style='font-size:8.5pt;font-family:"Arial","sans-serif";color:white;border:
none windowtext 1.0pt;padding:0in'>00:00</span></span><span style='font-size:
8.5pt;font-family:"Arial","sans-serif";color:white'><o:p></o:p></span></p>
<p class=MsoNormal style='line-height:19.8pt;background:#222222;vertical-align:
baseline'><span style='font-size:13.0pt;font-family:"Arial","sans-serif";
color:#A42E29'><a href="javascript:void(0);"><span class=mejs-offscreen><span
style='color:#179CCE;border:none windowtext 1.0pt;padding:0in;text-decoration:
none'>Use Up/Down Arrow keys to increase or decrease volume.</span></span><span
style='color:#179CCE;border:none windowtext 1.0pt;padding:0in;text-decoration:
none'><o:p></o:p></span></a></span></p>
<p class=MsoNormal style='line-height:19.8pt;background:#222222;vertical-align:
baseline'><span style='font-family:"Arial","sans-serif";color:#A42E29'><o:p> </o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'><o:p> </o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'>The low “foghorn” call is made by the Black Jewfish
(<em><span style='font-family:"Arial","sans-serif";border:none windowtext 1.0pt;
padding:0in'>Protonibea diacanthus</span></em>) while the grunting call that
researcher Miles Parsons compares to the “buzzer in the Operation board
game” comes from a species of Terapontid. The third chorus is a quieter
batfish that makes a “ba-ba-ba” call.<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'><o:p> </o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'>“I’ve been listening to fish<span
class=apple-converted-space> </span><a
href="https://www.newscientist.com/article/mg16622334-900-squawk-burble-and-pop/"><span
style='color:#179CCE;border:none windowtext 1.0pt;padding:0in'>squawks, burble
and pops</span></a><span class=apple-converted-space> </span>for nearly 30
years now, and they still amaze me with their variety,” says McCauley,
who led the research.<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'><o:p> </o:p></span></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:9.0pt;
margin-left:0in;background:white;vertical-align:baseline'><span
style='font-size:11.5pt;font-family:"Arial","sans-serif";color:#333333'>Sound
plays an important role in various fish behaviours such as reproduction,
feeding and territorial disputes. Nocturnal predatory fish use calls to stay
together to hunt, while fish that are active during the day use sound to defend
their territory. “You get the dusk and dawn choruses like you would with
the birds in the forest,” says Steve Simpson, a marine biologist at the
University of Exeter, UK.<o:p></o:p></span></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:9.0pt;
margin-left:0in;background:white;vertical-align:baseline'><span
style='font-size:11.5pt;font-family:"Arial","sans-serif";color:#333333'>The
recordings were captured by two sea-noise loggers: the first positioned near
the Port Headland shore and the second 21.5 kilometres away in offshore waters.<o:p></o:p></span></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:9.0pt;
margin-left:0in;background:white;vertical-align:baseline'><span
style='font-size:11.5pt;font-family:"Arial","sans-serif";color:#333333'>“This
is a method that allows us to understand what’s happening at Port
Headland 24/7 for a year and a half,” says Simpson. “I don’t
know any scuba diver that can stay down there that long!”<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'>Listening to choruses over a long period of time allows
scientists to<span class=apple-converted-space> </span><a
href="https://www.newscientist.com/article/sounds-of-the-sea/"><span
style='color:#179CCE;border:none windowtext 1.0pt;padding:0in'>monitor fish and
their ecosystems</span></a>, particularly in low visibility waters, such as
those off Port Headland.<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'><o:p> </o:p></span></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:9.0pt;
margin-left:0in;background:white;vertical-align:baseline'><span
style='font-size:11.5pt;font-family:"Arial","sans-serif";color:#333333'>“We
are only just beginning to appreciate the complexity involved and still have
only a crude idea of what is going on in the undersea acoustic
environment,” says McCauley.<o:p></o:p></span></p>
<p style='margin:0in;margin-bottom:.0001pt;background:white;vertical-align:
baseline'><span style='font-size:11.5pt;font-family:"Arial","sans-serif";
color:#333333'>Journal reference:<span class=apple-converted-space> </span><em><span
style='font-family:"Arial","sans-serif";border:none windowtext 1.0pt;
padding:0in'>Bioacoustics</span></em>, DOI:<span class=apple-converted-space> </span><a
href="http://www.tandfonline.com/doi/full/10.1080/09524622.2016.1227940?ai=mv7m0"><span
style='color:#179CCE;border:none windowtext 1.0pt;padding:0in'>10.1080/09524622.2016.1227940</span></a><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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