Primate Anti-Predator Strategies pp 173-205 | Cite as
Moonlight and Behavior in Nocturnal and Cathemeral Primates, Especially Lepilemur leucopus: Illuminating Possible Anti-Predator Efforts
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Abstract
What factors affect the behavioral decisions individuals make to forage, travel, rest, or engage in sociality, including reproductive behaviors, at a particular time or place? Decisions to engage in any of these activities should depend on trade-offs between gains in nutrients and, ultimately, in reproductive success, and predation risk (Lima & Dill, 1990). Lima & Dill argue that since most of the components of predation risk are potentially assessable by prey, prey may make behavioral decisions that could reduce the risks. In the case of foraging, a decision concerning foraging when a predation risk exists may differ from a decision based only upon energy considerations. However, Lima & Dill also review the variability of predator behavior, which may limit the prey’s ability to assess risk and the consequent cues prey could use to assess risk. For the observer, the difficulty is one of assessing the animal’s perceived risk of predation. Perceived risk is likely to be more important in understanding prey behavior than predation rate, since rate of predation is what we see after the evolution of anti-predator adaptations in morphology or behavior (Hill, 1998; Janson, 1998; Stanford, 2002).
Keywords
Full Moon Mouse Lemur Activity Budget Moon Phase Microcebus MurinusPreview
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References
- Allman, J. (1977). Evolution of the visual system in the early primates. Prog. Psychob. Physiol., 7: 1–53.Google Scholar
- Altmann, J. (1974). Observational study of behaviour: Sampling methods. Behaviour, 49: 227–267.PubMedGoogle Scholar
- Anderson, J.R. (1984). Ethology and ecology of sleep in monkeys and apes. Advances in the Study of Behavior, 14: 165–229.Google Scholar
- Anderson, J.R. (2000). Sleep-related behavioural adaptations in free-ranging anthropoid primates. Sleep Medicine Reviews, 4: 355–373.PubMedGoogle Scholar
- Atsalis, S. (1999). Seasonal fluctuations in body fat and activity levels in a rain-forest species of mouse lemur, Microcebus rufus. Int. J. Primatol., 20: 883–910.Google Scholar
- Atsalis, S. (2000). Spatial distribution and population composition of the brown mouse lemur Microcebus rufus in Ranomafana National Park, Madagascar, and its implications for social organization. Am. J. Primatol., 51: 61–78.PubMedGoogle Scholar
- Bearder, S.K. (1987). Lorises, bushbabies, and tarsiers: Diverse societies in solitary foragers. In B. Smuts, D. Cheney, R. Seyfarth, R. Wrangham, and T. Struhsaker (Eds.), Primate societies (pp. 11–24). Chicago: Univ. of Chicago Press.Google Scholar
- Bearder, S.K., Nekaris, K.A.I., and Buzzell, C.A. (2002). Dangers in the dark: Are some nocturnal primates afraid of the dark? In L.E. Miller (Ed.) Eat or be eaten: Predator sensitive foraging among primates (pp. 21–40). Cambridge: Cambridge Univ. Press.Google Scholar
- Bearder, S.K., Nekaris, K.A.I., Curtis, D.J. (2006). A re-evaluation of the role of vision in the activity and communication of nocturnal primates. Folia Primatol., 77: 50–71.PubMedGoogle Scholar
- Boinski, S., and Chapman, C.A. (1995). Predation on primates: Where are we and what’s next? Evol. Anthropol., 4: 1–3.Google Scholar
- Bowers, M.A. (1988). Seed removal experiments on desert rodents: The microhabitat by moonlight effect. J. Mammal., 69: 201–204.Google Scholar
- Bowers, M.A. (1990). Exploitation of seed aggregates by Merriam’s kangaroo rats: Harvesting rates and predatory risk. Ecology, 71: 2334–2344.Google Scholar
- Brigham, M., Barclay, R. (1992). Lunar influence on foraging and nesting activity of common poorwills. The Auk, 109: 315–320.Google Scholar
- Cant, J.G.H., Youlatos, D., Rose, M.D. (2001). Locomotor behavior of Lagothrix lagothricha and Ateles belzebuth in Yasuní? National Park, Ecuador: General patterns and nonsuspensory modes. J. Hum. Evol., 41: 141–166.PubMedGoogle Scholar
- Cartmill, M. (1974). Rethinking primate origins. Science, 184: 436–443.PubMedGoogle Scholar
- Cartmill, M. (1992). New views on primate origins. Evol. Anthropol., 1: 105–111.Google Scholar
- Charles-Dominique, P. (1977). Ecology and behaviour of nocturnal prosimians. London: Duckworth.Google Scholar
- Charles-Dominique, P., Hladik, C.M. (1971). Le Lepilemur du sud de Madagascar: Ecologie, alimentation et vie sociale. Terre et Vie, 25: 3–66.Google Scholar
- Cheney, D., Wrangham, R. (1987). Predation. In B. Smuts, D. Cheney, R. Seyfarth, R. Wrangham, and T. Struhsaker (Eds.), Primate societies (pp. 227–239). Chicago: Univ. of Chicago Press.Google Scholar
- Clark, J.A. (1983). Moonlight’s influence on predatory prey interactions between short-eared owls (Asio flammeus) and deermice (Peromyscus manicularus). Behav. Ecol. Sociobiol., 13: 205–209.Google Scholar
- Colquhoun, I. (1988). Cathemeral behavior of Eulemur macaco macaco at Ambato Massif, Madagascar. Folia Primatol., 69(Suppl.1): 22–34.Google Scholar
- Cresswell, W., and Harris, S. (1988). The effects of weather conditions on the movement and activity of badgers (Meles meles) in a suburban environment. J. Zool., 215: 187–194.Google Scholar
- Curtis, D.J., and Rasmussen, M.A. (2002). Cathemerality in lemurs. Evol. Anthropol., 11: 83–86.Google Scholar
- Curtis, D.J., Zaramody, A., and Martin, R.F. (1999). Cathemerality in the mongoose lemur. Eulemur mongoz. Am. J. Primatol., 47: 279–298.PubMedGoogle Scholar
- Daly, M., Behrends, P.R., Wilson, M.I., and Jacobs, L.F. (1992). Behavioural modulation of predation risk: Moonlight avoidance and crepuscular compensation in a nocturnal desert rodent, Dipodomys merriami. Anim. Behav., 44: 1–10.Google Scholar
- Dominy, N.J. (2004). Fruits, fingers, and fermentation: The sensory cues available to foraging primates. Integr. Comp. Biol., 44: 295–303.Google Scholar
- Dominy, N.J., Lucas, P.W., Osorio, D., and Yamashita, N. (2001). The sensory ecology of primate food perception. Evol. Anthropol., 10: 171–186.Google Scholar
- Dominy, N.J., Ross, C.F., and Smith, T.D. (2004). Evolution of the special senses in primates: Past, present, and future. Anat. Rec., 281: 1078–1082.Google Scholar
- Donati, G. (1999). Cathemeral activity of red-fronted brown lemurs (Eulemur fulvus rufus) in the Kirindy forest/CFPF. In B. Rakotosamimanana, H. Rasamimanana, J.U. Ganzhorn, and S.M. Goodman (Eds.), New directions in lemur studies (pp. 119–138). New York: Plenum.Google Scholar
- Donati, G., Lunardini, A., Kappeler, P.M., Tarli, B. (2001). Nocturnal activity in the cathemeral red-fronted lemur (Eulemur fulvus rufus), with observations during a lunar eclipse. Am. J. Primatol., 53: 69–78.PubMedGoogle Scholar
- Eberle, M., Kappeler, P.M. (2002). Mouse lemurs in space and time: A test of the socioecological model. Behav. Ecol. Sociobiol., 51: 131–139.Google Scholar
- Eberle, M., Kappeler, P.M. (2004a). Selected polyandry: Female choice and inter-sexual conflict in a small nocturnal solitary primate (Microcebus murinus). Behav. Ecol. Sociobiol., 57: 91–100.Google Scholar
- Eberle, M., Kappeler, P.M. (2004b). Sex in the dark: Determinants and consequences of mixed male mating tactics in Microcebus murinus, a small solitary nocturnal primate. Behav. Ecol. Sociobiol., 57: 77–90.Google Scholar
- Erkert, H.G. (1974). Der Einfluss des Mondlichtes auf die Aktiviatsperiodik machtaktiver Saugetuere. Oecologia, 14: 269–287.Google Scholar
- Erkert, H.G. (1976). Beleuchtungsabhängiges aktivitätsoptimum bie Nachtaffen (Aotus. trivirgatus). Folia Primatol., 25: 186–192.PubMedGoogle Scholar
- Erkert, H.G. (2000). Bats: Flying nocturnal mammals. In S. Halle and N.C. Stenseth (Eds.), Activity patterns in small mammals: An ecological approach (pp. 253–272). Berlin: Springer.Google Scholar
- Erkert, H.G. (2003). Chronobiological aspects of primate research. In J.M. Setchell and D.J. Curtis (Eds.), Field and laboratory methods in primatology: A practical guide (pp. 252–270). Cambridge: Cambridge Univ. Press.Google Scholar
- Erkert, H.G., Kappeler, P.M. (2004). Arrived in the light: Diel and seasonal activity patterns in wild Verreaux’s sifakas (Propithecus v. verreauxi; Primates: Indriidae). Behav. Ecol. Sociobiol., 57: 174–186.Google Scholar
- Fenton, M.B., Boyle, N.G.H., Harrison, T.M., and Oxley, D.J. (1977). Activity patterns, habitat use, and prey selection by some African insectivorous bats. Biotropica, 9: 73–85.Google Scholar
- Fernandez-Duque, E. (2003). Influences of moonlight, ambient temperature, and food availability on the diurnal and nocturnal activity of owl monkeys (Aotus azarai). Behav. Ecol. Sociobiol., 54: 431–440.Google Scholar
- Fernandez-Duque, E., Rotundo, M. (2003). Field methods for capturing and marking Azarai night monkeys. Int. J. Primatol., 24: 1113–1120.Google Scholar
- Fietz, J. (1999a). Demography and floating males in a population of Cheirogaleus medius. In B. Rakotosamimanana, H. Rasamimanana, J.U. Ganzhorn, and S.M. Goodman (Eds.), New directions in lemur studies (pp. 159–172). New York: Plenum.Google Scholar
- Fietz, J. (1999b). Monogamy as a rule rather than exception in nocturnal lemurs: The case of the fat-tailed dwarf lemur, Cheirogaleus medius. Ethology, 105: 255–272.Google Scholar
- Fietz, J., and Dausmann, K.H. (2003). Costs and potential benefits of parental care in the nocturnal fat-tailed dwarf lemur (Cheirogaleus medius). Folia Primatol., 74: 246–258.PubMedGoogle Scholar
- Fietz, J., and Ganzhorn, J.U. (1999). Feeding ecology of the hibernating primate Cheirogaleus medius: How does it get so fat? Oecologia, 121: 157–164.Google Scholar
- Fleagle, J.G. (1999). Primate adaptation and evolution (2nd ed.). New York: Academic Press, Inc.Google Scholar
- Ganzhorn, J.U., Pietsch, T., Fietz, J., Gross, S., Schmid, J., and Steiner, N. (2004). Selection of food and ranging behaviour in a sexually monomorphic folivorous lemur: Lepilemur ruficaudatus. J. Zool., 263: 393–399.Google Scholar
- Gilbert, B.S., and Boutin, S. (1991). Effect of moonlight on winter activity of snowshoe hares. Artic Alpine Res., 23: 61–65.Google Scholar
- Gilbert, M., and Tingay, R.E. (2001). Predation of a fat-tailed dwarf lemur Cheirogaleus. medius by a Madagascar harrier-hawk Polyboroides radiatus: An incidental observation. Lemur News, 6: 6.Google Scholar
- Goodman, S.M. (2003). Predators on lemurs. In S.M. Goodman and J.P. Benstead (Eds.), The natural history of Madagascar (pp. 1221–1228). Chicago: Univ. of Chicago Press.Google Scholar
- Goodman, S.M., Langrand, O., and Rasolonandrasana, B.P.N. (1997). The food habits of Cryptoprocta ferox in the high mountain zone of the Andringitra Massif, Madagascar (Carnivora: Viverridae). Mammalia, 61: 185–192.Google Scholar
- Goodman, S.M., Langrand, O., and Raxworthy, C.J. (1993a). The food-habits of the barn owl Tyto alba at 3 sites on Madagascar. Ostrich, 64: 160–171.Google Scholar
- Goodman, S.M., Langrand, O., and Raxworthy, C.J. (1993b). Food-habits of the Madagascar long-eared owl Asio madagascariensis in 2 habitats in southern Madagascar. Ostrich, 64: 79–85.Google Scholar
- Goodman, S.M., O’Connor, S., and Langrand, O. (1993c). A review of predation on lemurs: Implications for the evolution of social behavior in small, nocturnal primates. In P.M. Kappeler and J. Ganzhorn (Eds.), Lemur social systems and their ecological basis (pp. 51–66). New York: Plenum Press.Google Scholar
- Goodman, S.M., Rene de Roland, L.A., and Thorstrom, R. (1998). Predation on the eastern wooly lemur (Avahi laniger) and other vertebrates by Henst’s goshawk (Accipiter henstii). Lemur News, 3: 14–15.Google Scholar
- Grubb, P., Butynski, T.M., Oates, J.F., Bearder, S.K., Disotell, T.R., Groves, C.P., and Struhsaker, T.T. (2003). An assessment of the diversity of African primates. Int. J. Primatol., 24: 1301–1357.Google Scholar
- Gursky, S. (1994). Infant care in the spectral tarsier (Tarsius spectrum) Sulawesi, Indonesia. Int. J. Primatol., 15: 843–853.Google Scholar
- Gursky, S. (2000). Effect of seasonality on the behavior of an insectivorous primate, Tarsius spectrum. Int. J. Primatol., 21: 477–496.Google Scholar
- Gursky, S. (2002). Determinants of gregariousness in the spectral tarsier (Prosimian: Tarsius spectrum). J. Zool., 256: 401–410.Google Scholar
- Gursky, S. (2003a). Lunar philia in a nocturnal primate. Int. J. Primatol., 24: 351–367.Google Scholar
- Gursky, S. (2003b). Predation experiments on infant spectral tarsiers (Tarsius spectrum). Folia Primatol., 74: 272–284.PubMedGoogle Scholar
- Gursky, S. (2005). Predator mobbing in Tarsius spectrum. Int. J. Primatol., 26: 207–221.Google Scholar
- Harcourt, C.S., and Nash, L.T. (1986). Species differences in substrate use and diet between sympatric galagos in two Kenyan coastal forests. Primates, 27: 41–52.Google Scholar
- Heffner, R.S., Koay, G., and Heffner, H.E. (2001). Sound localization in a new-world frugivorous bat, Artibeus jamaicensis: Acuity, use of binaural cues, and relationship to vision. Journal of the Acoustical Society of America, 109: 412–421.PubMedGoogle Scholar
- Hill, R.A. (1998). Predation risk as an influence on group size in cercopithecoid primates: Implications for social structure. J. Zool., 245: 447–456.Google Scholar
- Hill, R.A., and Dunbar, R.I.M. (1998). An evaluation of the roles of predation rate and predation risk as selective pressures on primate grouping behaviour. Behaviour, 135: 411–430.Google Scholar
- Isbell, L.A. (1994). Predation on primates: Ecological patterns and evolutionary consequences. Evol. Anthropol., 3: 61–71.Google Scholar
- Jacobs, G.H. (1995). Variations in primate color vision: Mechanisms and utility. Evol. Anthropol., 3: 196–205.Google Scholar
- Jacobs, G.H. (2002). Progress toward understanding the evolution of primate color vision. Evol. Anthropol., 11: 132–135.Google Scholar
- Jahoda, J. (1973). The effect of the lunar cycle on the activity pattern of Onychomys leucogaster breviauritius. J. Mammal., 54: 544–549.Google Scholar
- Janson, C.H. (1998). Testing the predation hypothesis for vertebrate sociality: Prospects and pitfalls. Behaviour, 135: 389–410.Google Scholar
- Jenkins, S.H. (2002). Data pooling and Type I errors: A comment on Leger & Didrichsons. Anim. Behav., 63: F9–F11.Google Scholar
- Kappeler, P.M. (1997). Intrasexual selection in Mirza coquereli: Evidence for scramble competition polygyny in a solitary primate. Behav. Ecol. Sociobiol., 41: 115–127.Google Scholar
- Kappeler, P.M. (1998). Nests, tree holes, and the evolution of primate life histories. Am. J. Primatol., 46: 7–33.PubMedGoogle Scholar
- Kappeler, P.M., and Erkert, H.G. (2003). On the move around the clock: Correlates and determinants of cathemeral activity in wild redfronted lemurs (Eulemur fulvus rufus). Behav. Ecol. Sociobiol., 54: 359–369.Google Scholar
- Kotler, B.P. (1984). Risk of predation and the structure of desert rodent communities. Ecology, 65: 689–701.Google Scholar
- Kotler, B.P., Brown, J.S., and Hasson, O. (1991). Factors affecting gerbil foraging, behavior and rates of owl predation. Ecology, 72: 2249–2260.Google Scholar
- Lang, A., Kalko, E., Römer, H., Bockholdt, C., and Dechmann, D. (2006). Activity levels of bats and katydids in relation to the lunar cycle. Oecologia, 146: 659–666.PubMedGoogle Scholar
- Langrand, O. (1990). Guide to the birds of Madagascar. New Haven: Yale Univ. Press.Google Scholar
- Leger, D.W., and Didrichsons, I.A. (1994). An assessment of data pooling and some alternatives. Anim. Behav., 48: 823–832.Google Scholar
- Lima, S.L., and Dill, L.M. (1990). Behavioral decisions made under the risk of predation A review and prospectus. Can. J. Zool., 68: 619–640.Google Scholar
- Lockard, R., Owings, D. (1974a). Moon-related surface activity of bannertail (Dipodomys spectabilis) and Fresno (D. nitratoides) kangaroo rats. Anim. Behav., 22: 262–273.Google Scholar
- Lockard, R., and Owings, D. (1974b). Seasonal variation in moonlight avoidance by bannertail kangaroo rats. J. Mammal., 55: 189–193.PubMedGoogle Scholar
- Martin, P., and Bateson, P. (1993). Measuring behavior. Cambridge: Cambridge Univ. Press.Google Scholar
- Morrison, D.W. (1978). Lunar phobia in a neotropical fruit bat, Artibeus jamaicensis (Chiroptera: Phyllostomidae). Anim. Behav., 26: 852–855.Google Scholar
- Müller, A.E. (1999a). Aspects of social life in the fat-tailed dwarf lemur (Cheirogaleus medius): Inferences from body weights and trapping data. Am. J. Primatol., 49: 265–280.PubMedGoogle Scholar
- Müller, A.E. (1999b). The social organisation of the fat-tailed dwarf lemur, Cheirogaleus medius (Lemuriformes, Primates). Doctoral dissertation. University of Zurich, Zurich, Switzerland.Google Scholar
- Müller, A.E. (1999c). Social organization of the fat-tailed dwarf lemur (Cheirogaleus medius) in northwestern Madagascar. In B. Rakotosamimanana, H. Rasamimanana, J.U. Ganzhorn, and S.M. Goodman (Eds.), New directions in lemur studies (pp. 139–156). New York: Plenum.Google Scholar
- Mutschler, T. (1999). Folivory in a small-bodied lemur: The nutrition of the Alaotran gentle lemur (Hapalemur griseus alaotrensis). In B. Rakotosamimanana, H. Rasamimanana, J.U. Ganzhorn, and S.M. Goodman (Eds.), New directions in lemur studies (pp. 221–238). New York: Plenum.Google Scholar
- Mutschler, T. (2002). Alaotran gentle lemur: Some aspects of its behavioral ecology. Evol. Anthropol., 11: 101–104.Google Scholar
- Mutschler, T., and Tan, C.L. (2003). Hapalemur, bamboo or gentle lemurs. In S.M. Goodman and J.P. Benstead (Eds.), The natural history of Madagascar (pp. 1324–1329). Chicago: Univ. of Chicago Press.Google Scholar
- Nash, L.T. (1986). Influence of moonlight level on traveling and calling patterns in two sympatric species of Galago in Kenya. In D. Taub and F. King (Eds.) Current perspectives in primate social dynamics (pp. 357–367). New York: Van Nostrand Reinhold Co.Google Scholar
- Nash, L.T. (1998). Vertical clingers and sleepers: Seasonal influences on the activities and substrate use of Lepilemur leucopus at Beza Mahafaly Special Reserve, Madagascar. Folia Primatol., 69(Suppl.1): 204–217.Google Scholar
- Nash, L.T. (2000). Encounter rate estimates on Lepilemur leucopus and Microcebus murinus at Beza Mahafaly Special Reserve, southwestern Madagascar. Lemur News, 5: 38–40.Google Scholar
- Nekaris, K.A.I. (2003). Observations of mating, birthing and parental behaviour in three subspecies of slender loris (Loris tardigradus and Loris lydekkerianus ) in India and SriLanka. Folia Primatol., 74: 312–336.PubMedGoogle Scholar
- Nekaris, K.A.I., and Rasmussen, D.T. (2003). Diet and feeding behavior of Mysore slender lorises. Int. J. Primatol., 24: 33–46.Google Scholar
- Nelson, D. (1989). Gull predation on Cassin’s auklet varies with the lunar cycle. The Auk, 106: 495–497.Google Scholar
- Ortega, J., and Castro-Arellano, I. (2001). Artibeus jamaicensis. Mammalian Species, 662: 1–9.Google Scholar
- Overdorff, D.J. (1988). Preliminary report on the activity cycle and diet of the red-bellied lemur (Lemur rubriventer) in Madagascar. Am. J. Primatol., 16: 143–153.Google Scholar
- Overdorff, D.J., and Rasmussen, M.A. (1995). Determinants of nighttime activity in “diurnal” lemurid primates. In L. Alterman, G.A. Doyle and M.K. Izard (Eds.), Creatures of the dark: The nocturnal prosimians (pp. 61–74). New York: Plenum Press.Google Scholar
- Packer, W.C. (1965). Environmental influences on daily and seasonal activity in Setonix brachyurus (Quoy and Gaimard) (Marsupialia). Anim. Behav., 13: 270–283.PubMedGoogle Scholar
- Pariente, G.F. (1979). The role of vision in prosimian behavior. In G.A. Doyle and R. Marin (Eds.), The study of prosimian behavior (pp. 411–459). New York: Academic Press, Inc.Google Scholar
- Pariente, G.F. (1980). Quantitative and qualitative study of the light available in the natural biotope of Malagasy prosimians. In P. Charles-Dominique, H.M. Cooper, A. Hladik, C.M. Hladik, E. Pagès, G.F. Pariente, A. Petter-Rousseaux, A. Schilling, and J.J. Petter (Eds.), Nocturnal Malagasy primates: Ecology, physiology, and behavior (pp. 117–134). New York: Academic Press, Inc.Google Scholar
- Peetz, A., Norconk, M.A., and Kinzey, W.G. (1992). Predation by jaguar on howler monkeys (Alouatta seniculus) in Venezuela. Am. J. Primatol., 28: 223–228.Google Scholar
- Plesner-Jensen, S., and Honess, P. (1995). The influence of moonlight on vegetation height preference and trappability of small mammals. Mammalia, 59: 35–42.Google Scholar
- Price, M., Waser, N., and Bass, T. (1984). Effects of moonlight on microhabitat use by desert rodents. J. Mammal., 65: 211–219.Google Scholar
- Radespiel, U., Lutermann, H., Schmelting, B., Bruford, M.W., and Zimmermann, E. (2003). Patterns and dynamics of sex-biased dispersal in a nocturnal primate, the grey mouse lemur, Microcebus murinus. Anim. Behav., 65: 709–719.Google Scholar
- Radespiel, U., Sarikaya, Z., Zimmermann, E., and Bruford, M.W. (2001). Sociogenetic structure in a free-living nocturnal primate population: Sex-specific differences in the grey mouse lemur (Microcebus murinus). Behav. Ecol. Sociobiol., 50: 493–502.Google Scholar
- Radhakrishna, S., and Singh, M. (2002). Social behaviour of the slender loris (Loris tardigradus lydekkerianus). Folia Primatol., 73: 181–196.PubMedGoogle Scholar
- Randrianambinina, B., Rakotondravony, D., Radespiel, U., and Zimmermann, E. (2003). Seasonal changes in general activity, body mass and reproduction of two small nocturnal primates: A comparison of the golden brown mouse lemur (Microcebus ravelobensis) in northwestern Madagascar and the brown mouse lemur (Microcebus rufus) in eastern Madagascar. Primates, 44: 321–331.PubMedGoogle Scholar
- Rasoloarison, R.M., Rasolonandrasana, B.P.N., Ganzhorn, J.U., and Goodman, S.M. (1995). Predation on vertebrates in the Kirindy forest, western Madagascar. Ecotropica, 1: 59–65.Google Scholar
- Rasoloharijaona, S., Rakotosamimanana, B., Randrianambinina, B., and Zimmermann, E. (2003). Pair-specific usage of sleeping sites and their implications for social organization in a nocturnal Malagasy primate, the Milne Edwards’ sportive lemur (Lepilemur edwardsi). Am. J. Phys. Anthropol., 122: 251–258.PubMedGoogle Scholar
- Ratsirarson, J., and Emady, R.J. (1999). Prédation de Lepilemur leucopus par Buteo brachpterus dans la forêt galarie de Beza Mahafaly. Working Group on Birds in the Madagascar. Region Newsletter, 9: 14–15.Google Scholar
- Rendigs, A., Radespiel, U., Wrogemann, D., and Zimmermann, E. (2003). Relationship between microhabitat structure and distribution of mouse lemurs (Microcebus spp.) in northwestern Madagascar. Int. J. Primatol., 24: 47–64.Google Scholar
- Richard, A.F., Rakotomanga, P., and Schwartz, M. (1991). Demography of Propithecus verreauxi at Beza Mahafaly, Madagascar: Sex ratio, survival, and fertility, 1984–1988. Am. J. Phys. Anthropol., 84: 307–322.Google Scholar
- Sauther, M.L. (1989). Antipredator behavior in troops of free-ranging Lemur catta at Beza Mahafaly Special Reserve, Madagascar. Int. J. Primatol., 10: 595–606.Google Scholar
- Sauther, M.L. (1991). Reproductive behavior of free-ranging Lemur catta at Beza Mahafaly Special Reserve, Madagascar. Am. J. Phys. Anthropol., 84: 463–477.Google Scholar
- Schmid, J. (1999). Sex-specific differences in activity patterns and fattening in the gray mouse lemur (Microcebus murinus) in Madagascar. J. Mammal., 80: 749–757.Google Scholar
- Schmid, J., and Kappeler, P.M. (1998). Fluctuating sexual dimorphism and differential hibernation by sex in a primate, the gray mouse lemur (Microcebus murinus). Behav. Ecol. Sociobiol., 43: 125–132.Google Scholar
- Schülke, O. (2001). Social anti-predator behaviour in a nocturnal lemur. Folia Primatol., 72: 332–334.PubMedGoogle Scholar
- Schülke, O. (2003a). Living apart together: Patterns, ecological basis, and reproductive consequences of life in dispersed pairs of fork-marked lemurs (Phaner furcifer, Primates). Doctoral dissertation. Universität Würzburg, Würzburg, Germany.Google Scholar
- Schülke, O. (2003b). To breed or not to breed—Food competition and other factors involved in female breeding decisions in the pair-living nocturnal fork-marked lemur (Phaner furcifer). Behav. Ecol. Sociobiol., 55: 11–21.Google Scholar
- Schülke, O., and Kappeler, P.M. (2003). So near and yet so far: Territorial pairs but low cohesion between pair partners in a nocturnal lemur, Phaner furcifer. Anim. Behav., 65: 331–343.Google Scholar
- Schülke, O., and Ostner, J. (2001). Predation on Lepilemur by a harrier hawk and implications for sleeping site quality. Lemur News, 6: 5.Google Scholar
- Schwab, D., and Ganzhorn, J.U. (2004). Distribution, population structure and habitat use of Microcebus berthae compared to those of other sympatric cheirogalids. Int. J. Primatol., 25: 307–330.Google Scholar
- Sokal, R.R., and Rohlf, F.J. (1995). Biometry. New York: W.H. Freeman and Company.Google Scholar
- Stanford, C.B. (2002). Avoiding predators: Expectations and evidence in primate antipredator behavior. Int. J. Primatol., 23: 741–758.Google Scholar
- Sterling, E.J. (1993). Patterns of range use and social organization in aye-ayes (Daubentonia madagascariensis) on Nosy Mangabe. In P.M. Kappeler and J. Ganzhorn (Eds.), Lemur social systems and their ecological basis (pp. 1–10). New York: Plenum Press.Google Scholar
- Sterling, E.J., and Richard, A.F. (1995). Social organization in the aye-aye (Daubentonia madagascariensis) and the perceived distinctiveness of nocturnal primates. In L. Alterman, G.A. Doyle, and M.K. Izard (Eds.), Creatures of the dark: The nocturnal prosimians (pp. 439–451). New York: Plenum Press.Google Scholar
- Sussman, R.W. (1991). Demography and social organization of free-ranging Lemur catta in the Beza Mahafaly Reserve, Madagascar. Am. J. Phys. Anthropol., 84: 43–58.Google Scholar
- Sussman, R.W., and Rakotozafy, A. (1994). Plant diversity and structural analysis of a tropical dry forest in southwestern Madagascar. Biotropica, 26: 241–254.Google Scholar
- Thalmann, U. (2002). Contrasts between two nocturnal leaf-eating lemurs. Evol. Anthropol., 11: 105–107.Google Scholar
- Trent, B.K., Tucker, M.E., and Lockard, J.S. (1977). Activity changes with illumination in slow loris Nycticebus coucang. Appl. Anim. Ethol., 3: 281–286.Google Scholar
- Treves, A. (1999). Has predation shaped the social systems of arboreal primates? Int. J. Primatol., 20: 35–68.Google Scholar
- Troisi, A., Schino, G., D’Antoni, M., Pandolfi, N., Aureli, F., and D’Amato, F.R. (1991). Scratching as a behavioral index of anxiety in macaque mothers. Behav. Neural Biol., 56: 307–313.PubMedGoogle Scholar
- van Schaik, C.P. (1983). Why are diurnal primates living in groups? Behaviour, 87: 120–143.Google Scholar
- van Schaik, C.P., and van Hooff, J.A.R.A.M. (1983). On the ultimate causes of primate social systems. Behaviour, 85: 91–117.Google Scholar
- Warren, R.D., and Crompton, R.H. (1997). A comparative study of the ranging behaviour, activity rhythms and sociality of Lepilemur edwardsi (Primates, Lepilemuridae) and Avahi occidentalis (Primates, Indriidae) at Ampijoroa, Madagascar. J. Zool., 243: 397–415.Google Scholar
- Watanuki, Y. (1986). Moonlight avoidance behavior in Leach’s storm-petrels as a defense against slaty-backed gulls. The Auk, 103: 14–22.Google Scholar
- Weidt, A., Hagenah, N., Randrianambinina, B., and Radespiel, U. (2004). Social organization of the golden brown mouse lemur (Microcebus ravelobensis). Am. J. Phys. Anthropol., 123: 40–51.PubMedGoogle Scholar
- Wiens, F., and Zitzmann, A. (1999). Predation on a wild slow loris (Nycticebus coucang) by a reticulated python (Python reticulatus). Folia Primatol., 70: 362–364.PubMedGoogle Scholar
- Wiens, F., and Zitzmann, A. (2003a). Social dependence of infant slow lorises to learn diet. Int. J. Primatol., 24: 1007–1021.Google Scholar
- Wiens, F., and Zitzmann, A. (2003b). Social structure of the solitary slow loris Nycticebus coucang (Lorisidae). J. Zool., 261: 35–46.Google Scholar
- Wolfe, J.L., and Tan Summerlin, C. (1989). The influence of lunar light on nocturnal activity of the old-field mouse. Anim. Behav., 37: 410–414.Google Scholar
- Wright, P.C. (1978). Home range, activity pattern, and agonistic encounters in a group of night monkeys (Aotus trivirgatus) in Peru. Folia Primatol., 29: 43–55.PubMedGoogle Scholar
- Wright, P.C. (1989). The nocturnal primate niche in the New World. J. Hum. Evol., 18: 635–658.Google Scholar
- Wright, P.C. (1994). The behavior and ecology of the owl monkey. In J.F. Baser, R.E. Weller, and I. Kakoma (Eds.), Aotus: The owl monkey (pp. 97–112). San Diego: Academic Press.Google Scholar
- Wright, P.C. (1996). The neotropical primate adaptation to nocturnality: Feeding in the night (Aotus nigriceps and A. azarae). In M.A. Norconk, A.A. Rosenberger, and P.A. Garber (Eds.), Adaptive radiations of Neotropical primates (pp. 369–382, 546–547). New York: Plenum Press.Google Scholar
- Zinner, D., Hilgartner, R.D., Kappeler, P.M., Pietsch, T., and Ganzhorn, J.U. (2003). Social organization of Lepilemur ruficaudatus. Int. J. Primatol., 24: 869–888.Google Scholar
- Zollner, P.A., and Lima, S.L. (1999). Illumination and the perception of remote habitat patches by white-footed mice. Anim. Behav., 58: 489–500.PubMedGoogle Scholar