———. 1982. Annual cycles of activity and body composition in
Spermophilus townsendii mollis. Canadian Journal of Zool-
ogy60: 3298 –3306.
———. 1986. Postnatal growth of the Piute ground squirrel
(Spermophilus mollis). Journal of Mammalogy67 : 412 –16.
Rickart, E. A., and P. B. Robertson. 1985. Peromyscus melano-
carpus. Mammalian Species241 : 1–3.
Rickart, E. A., and E. Yensen. 1991. Spermophilus washingtoni.
Mammalian Species371 : 1–5.
Ricklefs, R., and M. Wikelski. 2002. The physiology/life-history
nexus. Trends in Ecology and Evolution17 : 462 – 68.
Rijksen, H. D. 1981. Infant killing: A possible consequence of a
disputed leader role. Behaviour78 : 138 – 68.
Riley, D. A., and M. R. Rosenzweig. 1957. Echolocation in
rats.Journal of Comparative and Physiological Psychology
50 : 323 –28.
Risch, T. S., F. S. Dobson, and J. O. Murie. 1995. Is mean litter
size the most productive? A test in Columbian ground squir-
rels. Ecology76 : 1643 –54.
Rissman, E. F., and R. E. Johnston. 1985. Female reproductive
development is not activated by male California voles ex-
posed to family cues. Biology of Reproduction32 : 352 – 60.
Ritchie, M. E., and G. E. Belovsky. 1990. Sociality of Columbian
ground squirrels in relation to their seasonal energy intake.
Oecologia83 : 495 –503.
Rivers, J. P. W., and M. A. Crawford. 1974. Maternal nutrition
and the sex ratio at birth. Nature252 : 297– 98.
Roach, J. S., P. Stapp, B. Van Horne, and M. F. Antolin. 2001.
Genetic structure of a metapopulation of black-tailed prairie
dogs. Journal of Mammalogy82 : 946 –59.
Roberts, A. M. 1978. The origins of fluctuations in the
human secondary sex ratio. Journal for Biosocial Science
10 : 169 – 82.
Roberts, M., E. Maliniak, and M. Deal. 1984. The reproductive
biology of the rock cavy, Kerodon rupestris,in captivity: A
study of reproductive adaptation in a trophic specialist. Mam-
malia48 : 253 – 66.
Roberts, M. S., K. V. Thompson, and J. A. Cranford. 1988.
Reproduction and growth in captive punare (Thrichomys
apereoidesRodentia:Echimyidae) of the Brazilian Caatinga
with reference to the reproductive strategies of the Echimyi-
dae. Journal of Mammalogy69 : 542 –51.
Roberts, R. L., B. S. Cushing, and C. S. Carter. 1998. Intraspe-
cific variation in the induction of female sexual receptivity in
prairie voles. Physiology and Behavior64 : 209 –12.
Roberts, R. L., J. R. Williams, A. K. Wang, and C. S. Carter.
- Cooperative breeding and monogamy in prairie voles:
Influence of the sire and geographical variation. Animal
Behaviour55 : 1131– 40.
Roberts, S. C. 1997. Selection of scent-marking sites by klip-
springers (Oreotragus oreotragus). Journal of Zoology
243 : 555 – 64.
Roberts, S. C., and R. I. M. Dunbar. 2000. Female territoriality
and the function of scent-marking in a monogamous antelope
(Oreotragus oreotragus). Behavioral Ecology and Sociobiol-
ogy47 : 417–23.
Roberts, S. C., and L. M. Gosling. 2003. Genetic quality and
similarity interact in mate choice decisions by female mice.
Nature Genetics35 : 103 – 6.
———. 2004. Manipulation of olfactory signalling and mate
choice for conservation breeding: a case study of the harvest
mouse. Conservation Biology18 : 548 –56.
Roberts, S.C., L.M. Gosling, E. A. Thornton, and J. McClung. - Scent-marking by male mice under the risk of preda-
tion. Behavioral Ecology12 : 698 –705.
Roberts, S. C., and C. Lowen. 1997. Optimal patterns of scent
marks in klipspringer (Oreotragus oreotragus) territories.
Journal of Zoology243 : 565 –78.
Roberts, T. J. 1977. The mammals of Pakistan.London: Ernest
Benn.
Roberts, W. M., J. P. Rodriguez, T. C. Good, and A. P. Dobson. - Population viability analysis of the Utah prairie dog.
Washington, DC: Environmental Defense Report.
Robins, J. H., J. S. Scheibe, and K. Laves. 2000. Sexual size
dimorphism and allometry in southern flying squirrels,
Glaucomys volans. In The biology of gliding mammals,ed.
R. Goldingay and J. S. Scheibe, 229 – 48. Erlangen, Germany:
Filander.
Robinson, A. S. 2000. Factors affecting reproductive success in
male house mice (Mus domesticus). PhD diss., Southern
Illinois University.
Robinson, R. 1965. Genetics of the Norway rat.Oxford:
Pergamon.
Robinson, S. R. 1981. Alarm communication in Belding’s ground
squirrels. Zeitschrift für Tierpsychologie56 : 150 – 68.
Robinson, S. R., and W. P. Smotherman. 1991. Fetal learning:
Implications for the development of kin recognition. In Kin
recognition,ed. P. G. Hepper, 308 –34. Cambridge: Cam-
bridge University Press.
Robitaille, J. A., and J. Bovet. 1976. Field observations on the
social behavior of the Norway rat, Rattus norvegicus(Berken-
hout). Biology of Behavior1 : 289 –308.
Rodd, F. H., and R. Boonstra. 1988. Effects of adult meadow
voles, Microtus pennsylvanicus,on young conspecifics in field
populations. Journal of Animal Ecology57 : 755 –70.
Rodgers, R. J., and J. I. Randall. 1986. Resident’s scent: A critical
factor in acute analgesic reaction to defeat experience in male
mice. Physiology and Behavior37 : 317–22.
———. 1987. Defensive analgesia in rats and mice. Psychologi-
cal Record37 : 335 – 47.
Roff, D. A. 1992. The evolution of life histories: Theory and
analysis.New York: Chapman and Hall.
Roff, D. A. 2002. Inbreeding depression: Tests of the over-
dominance and partial dominance hypotheses. Evolution
56 : 768 –75.
Rogovin, K. A. 1981. Utilization of territory by little earth hares
(Alactagulus acontion) and structure of their groups by mate-
rials on marking. [In Russian.] Zoologicheskii Zhurnal60 :
568 –77.
———. 1996. Social behavior of Psammomys obesus(Rodentia,
Gerbillidae) under seminatural conditions: A settlement
of high density. [In Russian.] Zoologicheskii Zhurnal
75:399 – 412.
———. 1999. On the origin of bipedal locomotion in rodents:
Ecological correlates of jerboas bipedal hopping. [In Russian.]
Zoologicheskii Zhurnal78 : 228 –39.
Rogovin, K. A., V. F. Kulikov, A. V. Surov, and N. Yu. Vasilieva. - Organization of the desert rodent communities in the
Transaltai Gobi in the territory of Mongolia. [In Russian.]
Zoologicheskii Zhurnal66 : 417–29.
Rogovin, K. A., M. P. Moshkin, J. A. Randall, I. E. Kolosova,
and Yu. A. Chikin. 2003. Availability of resources, demogra-
phy and physiological stress in population of great gerbil
(Rhombomys opimusLicht) in conditions of peak and decline
of density. [In Russian.] Zoologicheskii Zhurnal82 : 497–
References 573