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Dinosaur lactation?

Journal Article


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Abstract


  • Lactation is a process associated with mammals, yet a number of birds feed their newly hatched young on secretions analogous to the milk of mammals. These secretions are produced from various sections (crop organ, oesophageal lining and proventriculus) of the upper digestive tract and possess similar levels of fat and protein, as well as added carotenoids, antibodies and, in the case of pigeons and doves, epidermal growth factor. Parental care in avian species has been proposed to originate from dinosaurs. This study examines the possibility that some dinosaurs used secretory feeding to increase the rate of growth of their young, estimated to be similar to that of present day birds and mammals. Dinosaur ‘lactation’ could also have facilitated immune responses as well as extending parental protection as a result of feeding newly hatched young in nest environments. While the arguments for dinosaur lactation are somewhat generic, a case study for lactation in herbivorous site-nesting dinosaurs is presented. It is proposes that secretory feeding could have been used to bridge the gap between hatching and establishment of the normal diet in some dinosaurs.

Publication Date


  • 2013

Citation


  • Else, P. L. (2013). Dinosaur lactation?. The Journal of Experimental Biology, 216 (3), 347-351.

Scopus Eid


  • 2-s2.0-84872558409

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1119&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/120

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 347

End Page


  • 351

Volume


  • 216

Issue


  • 3

Place Of Publication


  • United Kingdom

Abstract


  • Lactation is a process associated with mammals, yet a number of birds feed their newly hatched young on secretions analogous to the milk of mammals. These secretions are produced from various sections (crop organ, oesophageal lining and proventriculus) of the upper digestive tract and possess similar levels of fat and protein, as well as added carotenoids, antibodies and, in the case of pigeons and doves, epidermal growth factor. Parental care in avian species has been proposed to originate from dinosaurs. This study examines the possibility that some dinosaurs used secretory feeding to increase the rate of growth of their young, estimated to be similar to that of present day birds and mammals. Dinosaur ‘lactation’ could also have facilitated immune responses as well as extending parental protection as a result of feeding newly hatched young in nest environments. While the arguments for dinosaur lactation are somewhat generic, a case study for lactation in herbivorous site-nesting dinosaurs is presented. It is proposes that secretory feeding could have been used to bridge the gap between hatching and establishment of the normal diet in some dinosaurs.

Publication Date


  • 2013

Citation


  • Else, P. L. (2013). Dinosaur lactation?. The Journal of Experimental Biology, 216 (3), 347-351.

Scopus Eid


  • 2-s2.0-84872558409

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1119&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/120

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 347

End Page


  • 351

Volume


  • 216

Issue


  • 3

Place Of Publication


  • United Kingdom