References

 

Heeran, K., V. Andrew-Goff, G. Williams, E. Sultan, M. Hindell, T. Patterson and J. Charrasin. 2013. Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behavior. Deep-Sea Reseach II 88-89:23-33.

Collins K.T., P.D. McGreevy, K. E. Wheatley and R.G Harcourt. 2011. The influence of behavioral context on Weddell seal (Leptonychotes weddellii) airborne mother-pup vocalization. Behavioural Processes 87:286-290.

Doiron, E. E., P. A. Rouget, and J. M. Ternune. 2012. Proportional underwater call type usage by Weddell seals (Leptonychotes weddellii) in breeding and nonbreeding situations. Can. J. Zoology 90: 237-247.

Proffitt, K. M., R. A. Garrott, and J. J. Rotella. 2008. Variation in offspring sex ratio among individual Weddell seal (Leptonychotes weddellii) females of different quality. Behavioral Ecology Sociobiology 62: 1679-1687

Proffitt, K. M., J. J. Rotella, and R. A. Garrott. 2010. Effects of pup age, maternal age, and birth date on pre-weaning survival rates of Weddell seals in Erebus Bay, Antarctica. Oikos 119: 1255-1264

Stirling, I. 1971. Leptonychotes weddelli. Mammalian Species. No. 6. The American Society of Mammalogists.

Gardner, R. and K. G. Heider. 1969. The Weddell Seal. Scientific American Inc.

 

Weddell seal. (2014). In Encyclopaedia     Britannica. Retrieved from http://www.britannica.com/EBchecked/topic/638694/Weddell-seal

 

Red Orbit 2014. <URL: http://www.redorbit.com/education/reference_library/animal_kingdom/mammalia/1112647140/weddell-seal-leptonychotes-weddellii/> Accessed 21 April 2014.

 

Terhune, J. M. 1994. Bioacoustics. Vol. 5. pp. 223-6. The International Journal of Animal Sound and its Recording. Great Britian.

 

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