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Morphological reflections of evolutionary adaptations in the tongue of the white-headed duck

Akbari, Ghasem ; Hassanzadeh, Belal ; Madadi, Mohammad Sadegh ; Babaei, Mohammad

Anatomical science international, September 2018, Vol.93(4), pp.469-477 [Periódico revisado por pares]

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  • Título:
    Morphological reflections of evolutionary adaptations in the tongue of the white-headed duck
  • Autor: Akbari, Ghasem ; Hassanzadeh, Belal ; Madadi, Mohammad Sadegh ; Babaei, Mohammad
  • Assuntos: Anatidae ; Anseriformes ; Filter-Feeding Method ; Lingual Organ ; Triangular Structure ; Adaptation, Physiological ; Biological Evolution ; Ducks -- Physiology ; Tongue -- Anatomy & Histology
  • É parte de: Anatomical science international, September 2018, Vol.93(4), pp.469-477
  • Descrição: During an organism's evolution, functional adaptations help species to become better suited to their ecological niches. From the morphological aspect, these adaptations are reflected in the anatomical specializations of different organs. Specializations of the lingual organ is a critical adaptation of birds, such as the white-headed duck (Oxyura leucocephala), that enables their nutritional requirements to be met. For optimal use of the available food resources, the white-headed duck utilizes three methods of food collection, namely pecking, grazing and filter-feeding. Since this species is classified as endangered, we conducted the present study on two carcasses of the white-headed duck (death due to natural causes) employing routine histological methods, light microscopy and scanning electron microscopy. Our results show that the tongue of this bird shares some similarities and some differences with the tongue of other members of the family Anatidae. The results confirm that it is better...
  • Idioma: Inglês

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