Summary
Both seismic and auditory signals were tested for their propagation characteristics in a field study of the Cape mole-rat (Georychus capensis), a subterranean rodent in the family Bathyergidae. This solitary animal is entirely fossorial and apparently communicates with its conspecifics by alternately drumming its hind legs on the burrow floor. Signal production in this species is sexually dimorphic, and mate attraction is likely mediated primarily by seismic signalling between individuals in neighboring burrows. Measurements within, and at various distances away from, natural burrows suggest that seismic signals propagate at least an order of magnitude better than auditory signals. Moreover, using a mechanical thumper which could be triggered from a tape recording of the mole-rat's seismic signals, we established that the vertically-polarized surface wave (Rayleigh wave) propagates with less attenuation than either of the two horizontally-polarized waves. Thus, we tentatively hypothesize that Rayleigh waves subserve intraspecific communication in this species.
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Abbreviations
- PPM :
-
pulses per min
- SB :
-
simulated burrow
- SD :
-
standard deviation
- SPL :
-
sound pressure level
References
Aitkin LM, Horseman BG, Bush BMH (1982) Some aspects of the auditory pathway and audition in the European mole, Talpa europaea. Brain Behav Evol 21:49–59
Altuna CA (1983) Sobre la estructura de las construcciones de Ctenomys pearsoni Lessa y Langguth, 1983 Rodentia, Octodontidae. Res Com Jorn C Nat Montevideo 3:70–72
Altuna CA (1985) Microclima de cuevas de Ctenomys pearsoni (Rodentia, Octodontidae) en Arroyo Carrasco (Montevideo). Actas Jorn Zool Uruguay 1985:59–60
Bennett NC (1988) The trend toward sociality in three species of Southern African mole-rats (Bathyergidae): Causes and consequences. Ph.D. thesis, University of Cape Town
Bennett NC (1989) The social structure and reproductive biology of the common mole-rat, Cryptomys h. hottentotus and remarks on the trends and reproduction and sociality in the family Bathyergidae. J Zool (Lond) 219:45–59
Bennett NC, Jarvis JUM (1988a) The reproductive biology of the Cape mole-rat, Georychus capensis (Rodentia, Bathyergidae). J Zool (Lond) 214:95–106
Bennett NC, Jarvis JUM (1988b) The social structure and reproductive biology of colonies of the mole-rat, Cryptomys damearensis (Rodentia, Bathyergidae). J Mammal 69:293–302
Bruns V, Mueller M, Hofer W, Heth G, Nevo E (1988) Inner ear structure and electrophysiological audiograms of the subterranean mole rat, Spalax ehrenbergi. Hearing Res 33:1–10
Brush JS, Narins PM (1989) Chorus dynamics of a neotropical amphibian assemblage: Comparison of computer simulation and natural behaviour. Anim Behav 37:33–44
Burda H (1989) Reproductive biology (Behaviour, breeding and postnatal development) in subterranean mole-rats Cryptomys hottentotus (Bathyergidae). Z Säugetierkd 54:360–376
Burda H, Mueller M, Bruns V (1988) The auditory system in subterranean mammals. In: Elsner N, Barth FG (eds) Sense organs — interfaces between environment and behaviour. G. Thieme, Stuttgart, p 182
Burda H, Bruns V, Nevo E (1989) Middle ear and cochlear receptors in the subterranean mole-rat, Spalax ehrenbergi. Hearing Res 39:225–230
Christensen-Dalsgaard J, Jørgensen MB (1988) The response characteristics of vibration-sensitive saccular fibers in the grassfrog. J Comp Physiol A 162:633–638
Davies KC, Jarvis JUM (1986) The burrow systems and burrowing dynamics of the mole-rats Bathyergus suillus and Cryptomys hottentotus in the fynbos of the south-western Cape, South Africa. J Zool (Lond) 209:125–147
DuToit JT, Jarvis JUM, Louw GN (1985) Nutrition and burrowing energetics of the Cape mole-rat Georychus capensis. Oecologica 66:81–87
Hartline PH (1971) Physiological basis for detection of sound and vibration in snakes. J Exp Biol 54:349–371
Heth G, Frankenberg E, Raz A, Nevo E (1987) Vibrational communication in subterranean mole rats (Spalax ehrenbergi). Behav Ecol Sociobiol 21:31–33
Honeycutt RL, Edwards SV, Nelson K, Nevo E (1987) Mitochondrial DNA variation and the phylogeny of African mole rats (Rodentia: Bathyergidae). Syst Zool 36:280–292
Honeycutt RL, Nelson K, Schlitter DA, Sherman PW (1991) Genetic variation within and among populations of the naked mole-rat: Evidence from nuclear and mitochondrial genomes. In: Sherman PW, Jarvis JUM, Alexander RD (eds) The biology of the naked mole-rat. Princeton University Press, Princeton New Jersey, pp 195–208
Jarvis JUM (1981) Eusociality in a mammal: Cooperative breeding in naked mole-rat colonies. Science 212:571–573
Jarvis JUM (1991) Reproduction of naked mole-rats. In: Sherman PW, Jarvis JUM, Alexander RD (eds) The biology of the naked mole-rat. Princeton University Press, Princeton New Jersey, pp 384–425
Jarvis JUM, Bennett NC (1991) Ecology and behaviour of the family Bathyergidae. In: Sherman PW, Jarvis JUM, Alexander RD (eds) The biology of the naked mole-rat. Princeton University Press, Princeton New Jersey, pp 66–96
Kenagy GJ (1976) Field observations of male fighting, drumming, and copulation in the Great Basin kangaroo rat, Dipodomys microps. J Mammal 57:781–785
Koyama H, Lewis ER, Leverenz EL, Baird RA (1982) Acute seismic sensitivity in the bullfrog ear. Brain Res 250:168–172
Lacey EA, Alexander RD, Braude SH, Sherman PW, Jarvis JUM (1991) An ethogram for the naked mole-rat: Non vocal behaviours. In: Sherman PW, Jarvis JUM, Alexander RD (eds) The biology of the naked mole-rat. Princeton University Press, Princeton New Jersey, pp 209–242
Lewis ER, Narins PM (1985) Do frogs communicate with seismic signals? Science 227:187–189
Lloyd JE (1973) Model for the mating protocol of synchronously flashing fireflies. Nature 245:268–270
Lloyd JE (1983) Bioluminescence and communication in insects. Annu Rev Entomol 28:131–160
Moore SW, Lewis ER, Narins PM, Lopez PT (1989) The call timing algorithm of the white-lipped frog, Leptodactylus albilabris. J Comp Physiol A 164:309–319
Morin JG (1986) Firefleas of the sea: Luminescent signalling in marine ostracode crustaceans. Florida Entomologist 69:105–121
Mueller M, Burda H (1989) Restricted hearing range in a subterranean rodent, Cryptomys hottentotus. Naturwissenschaften 76:134–135
Narins PM (1990) Seismic communication in anuran amphibians. Bioscience 40:268–274
Narins PM, Lewis ER (1984) The vertebrate ear as an exquisite-seismic sensor. J Acoust Soc Am 76:1384–1387
Pepper JW, Braude SH, Lacey EA, Sherman PW (1991) Vocalization of the naked mole-rat. In: Sherman PW, Jarvis JUM, Alexander RD (eds) The biology of the naked mole-rat. Princeton University Press, Princeton New Jersey, pp 243–274
Rado R, Levi N, Hauser H, Witcher J, Adler N, Intrator N, Wollberg Z, Terkel J (1987) Seismic signalling as a means of communication in a subterranean mammal. Anim Behav 35:1249–1251
Randall JA (1984) Territorial defense and advertisement by footdrumming in bannertail kangaroo rats (Dipodomys spectabilis) at high and low population densities. Behav Ecol Sociobiol 16:11–20
Randall JA (1989) Individual footdrumming signatures in bannertailed kangaroo rats Dipodomys spectabilis. Anim Behav 38:620–630
Reichman OJ, Jarvis JUM (1989) The impact of three species of fossorial herbivorous mole-rats (Rodentia: Bathyergidae) on overlying vegetation. J Mammal 70:763–771
Reichman OJ, Smith S (1990) Burrows and burrowing behavior by mammals. Current Mammal 2:197–244
Reichman OJ, Whitham TG, Ruffner G (1982) Adaptive geometry of burrow spacing in two pocket gopher populations. Ecology 63:687–695
Ross RJ, Smith JJB (1978) Detection of substrate vibrations by salamanders: Inner ear sense organ activity. Can J Zool 56:1156–1162
Rupert A, Moushegian G (1970) Neuronal resonses of kangaroo rat ventral cochlear nucleus to low-frequency tones. Exp Neurol 26:84–102
Sherman PW, Jarvis JUM, Alexander RD (eds) (1991) The biology of the naked mole-rat. Princeton University Press, Princeton, New Jersey
Smithers RHN (1983) The mammals of the southern African subregion. University of Pretoria, Pretoria, Republic of South Africa
Walker EP (1975) Mammals of the world. Third ed. vol II. Baltimore. The Johns Hopkins University Press, I–viii, pp 647–1500
Webster DB, Webster M (1972) Kangaroo rat auditory thresholds before and after middle ear reduction. Brain Behav Evol 5:41–53
Webster DB, Webster M (1980) Morphological adaptations of the ear in the rodent family Heteromyidae. Am Zool 20:247–254
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Narins, P.M., Reichman, O.J., Jarvis, J.U.M. et al. Seismic signal transmission between burrows of the Cape mole-rat, Georychus capensis . J Comp Physiol A 170, 13–21 (1992). https://doi.org/10.1007/BF00190397
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DOI: https://doi.org/10.1007/BF00190397