„Indivizii unui grup nu emit sunete diferite şi nu au nume diferite, ci spun aceleaşi lucruri dar în moduri diferite. Noi credem că ei se pot deosebi între ei cu ajutorul acestor accente”, a afirmat cercetătorul Shane Gero de la Dalhousie University din Canada.
Caşaloţii trăiesc în grupuri numeroase, mai multe generaţii de femele aflându-se laolaltă cu puii lor. Aceştia comunică între ei folosind code, combinaţii specifice de sunete de pocnituri scurte care se propagă prin apă până la un kilometru distanţă.
O echipă de biologi a urmărit un grup de caşaloţi format din şapte membri mai bine de 40 de zile, în timp ce animalele se hrăneau de-a lungul coastei Caraibilor. Cercetătorii au descoperit că una dintre codele folosite de aceştia, formată din cinci pocnituri consecutive, este folosită şi de membrii altor grupuri, însă este accentuată diferit sau timpul dintre sunete este altul.
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