Wer wird beschrieben?

[Nicolá Lutzmann]

Auszug aus einem zugeschickten abstract:

"xxx from three populations were recorded in artificial environments set up to simulate small wetlands. Recordings were undertaken from dawn to midnight. A vocal repertoire of 17 categories was described for these animals with calls consisting of both complex and percussive spectral structures. Vocalizations included clacks, clicks, squawks, hoots, short chirps, high short chirps, medium chirps, long chirps, high calls, cries or wails, hooos, grunts, growls, blow bursts, staccatos, a wild howl, and drum rolling. Also, a sustained vocalization was recorded during the breeding months, consisting of pulse sequences that finished rhythmically. This was hypothesized to function as an acoustic advertisement display."

Für mich wars überraschend, was aber vielleicht auch nicht überraschend ist

Gruss
Nicolá

[pura_vida]

Eine Schildi...., sorry für die Verniedlichung, aber bei den Tönen...

Gruß Michi

[H.S.]

Da rate ich doch mal ganz grob und sage Chelodina oblonga

[Nicolá Lutzmann]

VOICE OF THE TURTLE: THE UNDERWATER ACOUSTIC REPERTOIRE OF THE LONG-NECKED
FRESHWATER TURTLE, CHELODINA OBLONGA

by Jacqueline C. Giles, Jenny A. Davis, Robert D. McCauley & Gerald Kuchling

2009. Journal of the Acoustical Society of America. 125(1): 434-443

Abstract: Chelodina oblonga is a long-necked, freshwater turtle found predominantly in
the wetlands on the Swan Coastal Plain of Western Australia. Turtles from three
populations were recorded in artificial environments set up to simulate small wetlands.
Recordings were undertaken from dawn to midnight. A vocal repertoire of 17 categories
was described for these animals with calls consisting of both complex and percussive
spectral structures. Vocalizations included clacks, clicks, squawks, hoots, short chirps,
high short chirps, medium chirps, long chirps, high calls, cries or wails, hooos, grunts,
growls, blow bursts, staccatos, a wild howl, and drum rolling. Also, a sustained
vocalization was recorded during the breeding months, consisting of pulse sequences that
finished rhythmically. This was hypothesized to function as an acoustic advertisement
display. Chelodina oblonga often lives in environments where visibility is restricted due to
habitat complexity or poor light transmission due to tannin-staining or turbidity. Thus the
use of sound by turtles may be an important communication medium over distances
beyond their visual range. This study reports the first records of an underwater acoustic
repertoire in an aquatic chelonian.


http://www.cnah.org/pdf_files/1266.pdf




Na, dann hätte ich doch dazuschreiben sollen, dass die, die den newsticker auch bekommen, nicht mitraten sollen! Nun denn...


besten Gruss
Nicolá