Suckling and allosuckling behavior in wild giraffe (Giraffa camelopardalis tippelskirchi)
Abstract
Allosuckling has been reported in many mammalian species. In giraffe, allosuckling has been observed in captivity, and the milk theft hypothesis with reciprocity is regarded as the likeliest explanation for this behavior. However, reports of such behavior in the wild remain sparse to non-existent. Here, we studied the suckling and allosuckling behaviors of three nursing giraffe and their offspring (two calves and one juvenile) for 32 days in the Katavi National Park, Tanzania. In total, we observed 56 suckling bouts, 96 suckling attempts, 5 allosuckling bouts, and 71 allosuckling attempts. We observed that the female decided when to nurse the offspring, as reported in previous studies; however, the suckling bouts of calves were terminated mainly by other individuals. On the other hand, all suckling bouts of juvenile were terminated by the female. The milk theft hypothesis was supported since (1) the allosuckler always joined a suckling pair and never succeeded when approaching a female by itself, (2) the female apparently did not notice the non-filial offspring positioned behind the filial offspring, and (3) the female showed active signs of rejection when she noticed the allosuckler. In addition, we found that juvenile close to weaning showed the highest rate of allosuckling interactions. Therefore, we assume that the presence of a weaning individual might drive the occurrence of allosuckling in giraffe in the wild.
Keywords
Allosuckler Milk theft WeaningPreview
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References
- Altmann, J., 1974. Observational study of behavior: sampling methods. Behaviour 49, 227–265.CrossRefGoogle Scholar
- Baldovino, C.M., Di Bitetti, S.M., 2008. Allonursing in tufted capuchin monkeys (Cebus nigritus): milk or pacifier? Folia Primatol. 79, 79–92.CrossRefGoogle Scholar
- Brandlová, K., Bartoš, L., Haberová, T., 2013. Camel calves as opportunistic milk thefts? The first description of allosuckling in domestic bactrian camel (Camelus bactrianus). PLoS One 8 (1), e53052, https://doi.org/10.1371/journal.pone.0053052.CrossRefGoogle Scholar
- Caister, L., Shields, W.M., Gosser, A., 2003. Female tannin avoidance: a possible explanation for habitat and dietary segregation of giraffes (Giraffa Camelopardalis peraita) in Niger. Afr. J. Ecol. 41, 201–210.CrossRefGoogle Scholar
- Clark, S.T., Odell, D.K., 1999. Nursing papameters in captive killer whales (Orcinus orca). Zoo Biol. 18, 373–384.CrossRefGoogle Scholar
- Dagg, A.I., Foster, J.B., 1976. The Giraffe: Its Biology, Behavior, and Ecology. Krieger Publishing Company, Florida.Google Scholar
- Gloneková, M., Brandlová, K., Pluháček, J., 2016. Stealing milk by young and reciprocal mothers: high incidence of allonursing in giraffes, Giraffa camelopardalis. Anim. Behav. 113, 113–123.CrossRefGoogle Scholar
- Gloneková, M., Vymyslická, P.J., Žáčková, M., Brandlová, K., 2017. Giraffe nursing behaviour reflects environmental conditions. Behaviour 154, 115–129.CrossRefGoogle Scholar
- Langman, V.A., 1977. Cow-calf relationships in giraffe (Giraffa camelopardalis giraffe). Z. Tierpsychol. 43, 264–286.Google Scholar
- Le Pendu, Y., Ciofolo, I., 1999. Seasonal movements of giraffes in Niger. J. Trop. Ecol. 15, 341–353.CrossRefGoogle Scholar
- Leuthold, M.B., 1979. Social organization and behaviour of giraffe in Tsavo East National Park. Afr. J. Ecol. 17, 19–34.CrossRefGoogle Scholar
- MacLeod, K.L., Lukas, D., 2014. Revisiting non-offspring nursing: allonursing evolves when the costs are low. Biol. Lett. 10, 20140378.CrossRefGoogle Scholar
- Martin, P., 1984. The meaning of weaning. Anim. Behav. 32, 1257–1259.CrossRefGoogle Scholar
- Nakamichi, M., Murata, C., Eto, R., Takagi, N., Yamada, K., 2015. Daytime mother-calf relationships in reticulated giraffes (Giraffa camelopardalis reticulate) at the Kyoto City Zoo. Zoo Biol. 34, 110–117.CrossRefGoogle Scholar
- Packer, C., Lewis, S., Pusey, A., 1992. A comparative analysis of non-offspring nursing. Anim. Behav. 43, 265–281.CrossRefGoogle Scholar
- Penzhorn, B.L., 1984. A long-term study of social organization and behaviour of Cape mountain zebra Equus zebra zebra. Ethology 64, 97–146.Google Scholar
- Pluháček, J., Bartošová, J., Bartoš, L., 2011. A case of adaption and allonursing in captive plains zebra (Equus burcheiiii). Behav. Process. 86, 174–177.CrossRefGoogle Scholar
- Pratt, D.M., Anderson, V.H., 1979. Giraffe cow-calf relationships and social development of the calf in the Serengeti. Z. Tierpsychol. 51, 233–251.CrossRefGoogle Scholar
- R Core Team, 2016. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, Austria.Google Scholar
- Riedman, M.L., 1982. The evolution of alloparental care and adoption in mammals and birds. Q. Rev. Biol. 57, 405–435.CrossRefGoogle Scholar
- Roulin, A., 2002. Why do lactating females nurse alien offspring? A review of hypotheses and empirical evidence. Anim. Behav. 63, 201–208.CrossRefGoogle Scholar
- Waltert, M., Meyer, B., Shanyangi, W.M., Balozi, J.J., Kitwara, O., Qolli, S., Krischke, H., Muhlenberg, M., 2008. Foot surveys of large mammals in woodlands of western Tanzania. J. Wildl. Manage. 72, 603–610.CrossRefGoogle Scholar
- Zapata, B., Gonzalez, A.B., Ebensperger, A.L., 2009a. Allonursing in captive guanacos, Lama guanicoe: milk theft or misdirected parental care? Ethology 115, 731–737.CrossRefGoogle Scholar
- Zapata, B., Gaete, G., Correa, A.L., Gonzalez, A.B., Ebensperger, A.L., 2009b. A case of allosuckling in wild guanacos (Lama guanicoe). J. Ethol. 27, 295–297.CrossRefGoogle Scholar