Intra-sexual female agonistic behaviour of the South American sea lion (Otaria flavescens) in two colonies with different breeding substrates

  title={Intra-sexual female agonistic behaviour of the South American sea lion (Otaria flavescens) in two colonies with different breeding substrates},
  author={Esteban Fern{\'a}ndez-Juricic and Marcelo H. Cassini},
  journal={acta ethologica},
Female agonistic behaviour during pregnancy and lactation is common in several pinnipeds and has been associated to pup or territory defence. [...] Key Method We compared female agonistic behaviour (open-mouth displays and bites) within two colonies with different breeding substrates (homogeneous, Punta Norte; heterogeneous, Pirámide) of South American sea lions using two methods: weighted means and general linear models. We found that both aggressive interaction rates were significantly affected by female…Expand

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