+ Translate

The functional significance of the diphasic advertisement call of geocrinia victoriana anura leptodactylidae

, : The functional significance of the diphasic advertisement call of geocrinia victoriana anura leptodactylidae. Behavioral Ecology & Sociobiology 16(4): 363-374

The advertisement call of Geocrinia victoriana is markedly diphasic and consists of one introductory note (rarely two or three), followed by a series of repeated notes of similar carrier frequency, but much shorter duration and higher pulse rate. In two-choice field discrimination experiments with the two phases of the advertisement call presented as alternative stimuli, reproductively ripe females were attracted only to the repeated notes, and contacted the source of these signals (a loudspeaker). Field playback experiments were carried out on residential males, with a complete call, an introductory note, or a series of repeated notes being used as the stimulus, and intensity varied upwards in 10 dB increments. With the complete call or the introductory note as the stimulus, calling behaviour of subjects altered significantly from the pre-stimulatory pattern, with a great reduction in output of repeated notes, and an increase in duration and decrease in pulse rate of introductory notes. The threshold intensity (lowest level for a significant change in calling behaviour) with the introductory note as the stimulus, 90-99.9 dB peak sound pressure level (PSPL), was at least 10 dB lower than that with the complete call as the stimulus (110-125 dB, PSPL). Playback of repeated notes had little effect on calling behaviour until the intensity exceeded 120 dB, PSPL. Playback of all three classes of stimulus at constant intensities below and above the threshold for the complete cell (i.e. 90-99.9, and 110-125 dB, PSPL) indicated that changes in calling behaviour were due to the intensity of stimulus rather than to a cumulative effect based on the number of stimuli. Measurements of intensities of advertisement calls of nearest neighbours in natural breeding assemblages (modal class=104-106 dB, PSPL) were consistent with the experimental results. It was thus demonstrated that in G. victoriana the two functions of the advertisement call are partitioned: the repeated notes attract breeding females (hence are equivalent to the mating call), and the introductory notes are directed at other males in a territorial context. The increase in duration of the introductory note is graded rather than discrete, so that this phase of the advertisement call changes progressively from the equivalent of a long-range (first-order) to a short-range (second-order) territorial call, then to an encounter call.

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006680778

DOI: 10.1007/bf00295550

Download PDF Full Text: The functional significance of the diphasic advertisement call of geocrinia victoriana anura leptodactylidae

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Rombouts, F.; Pilnik, W., 1972: Research on pectin depolymerases in the sixties; a literature review. CRC critical reviews in food technology: 3 (1) 1-26

Singh, P.R.; Pandey, S.K.; Payme, A.I.; Singh, H.R., 1996: Impact of mass bathing on the water quality of the river Ganga at Sangam (Allahabad) during Ardha Kumbha, (1995). Mass bathing in Ganga during Ardha Kumbha (1995) affected the water quality of the river, causing significant decrease in dissolved oxygen and increase in conductivity and T. D. S. (total dissolved solids) values. The study suggests that intense h...

Drüeke, T.B., 2001: Parathyroid gland hyperplasia in uremia. The renal proximal tubular reabsorption of sulfate plays an important role in the maintenance of sulfate homeostasis. Two different renal sulfate transport systems have been identified and characterized at the molecular level in the past few years...

Yang, Z-Hong.; Miyahara, H.; Takeo, J.; Katayama, M., 2012: Diet high in fat and sucrose induces rapid onset of obesity-related metabolic syndrome partly through rapid response of genes involved in lipogenesis, insulin signalling and inflammation in mice. Diabetology & Metabolic Syndrome 4(1): 32-32

D'Souza, R.F.C.; Glynn, M.J.; Alstead, E.; Osonayo, C.; Foster, G.R., 2004: Knowledge of chronic hepatitis C among East London primary care physicians following the Department of Health's educational campaign. Background: In August 2002, the Department of Health (DH) wrote to all general practitioners (GPs) in England about hepatitis C, enclosing an educational booklet. Aim: To assess hepatitis C knowledge among East London GPs in June 2003. Design: Pos...

Grenier, D.; Morin, M-P.; Fournier-Larente, J.; Chen, H., 2015: Vitamin D inhibits the growth of and virulence factor gene expression by Porphyromonas gingivalis and blocks activation of the nuclear factor kappa B transcription factor in monocytes. Increasing evidence suggests that 1,25-dihydroxyvitamin D3 (1,25(OH)2 D3 ), a fat-soluble secosteroid hormone, has a positive impact on periodontal health through diverse mechanisms. The present study was aimed at investigating the effect of 1,25(...

Mikhli, S. Z., 1984: Calculation of chips delivered by railroad. According to the Soviet Standard OST 13-74-79 for the gravimetric determination of chip vol., each gondola car containing chips is weighed and samples are taken for the determination of wood specific vol. and calculation of the solid vol. It is su...

Haynes, S.G.; Feinleib, M.; Levine, S.; Scotch, N.; Kannel, W.B., 1978: The relationship of psycho social factors to coronary heart disease in the framingham study part 2 prevalence of coronary heart disease. In a cross-sectional study of 1822 persons aged 45-77 yr of age [in Framingham, Massachusetts, USA], the association of 20 psychosocial scales with coronary heart disease (CHD) prevalence was assessed. Women (aged 45-64 yr) with coronary disease s...

Jones, K.M.; Bound, S.A.; Oakford, M.J., 1994: Combining ethephon and naphthalene acetic acid (NAA) in one spray to thin 'Golden Delicious' apples. A trial was carried out to examine the effects of ethephon or NAA, alone or in combination, used to thin apple cv. Golden Delicious fruits. All sprays were applied only at full bloom (FB). A factorial design was used with ethephon at 0, 50, 100 an...

Hocking, B., 1979: Coronary risk factor screening. Medical Journal of Australia 1(9): 398-398