.. but not as size variation in identical dental formulae (as in several mammal species), but to differences in number of teeth...
I´m working with heterodontosaurids, a lineage in which several hypotheses of sexual dimorphism were made... but in this case, no examples of sexual dimorphism sustained by different dentitions in dinosaur lineages exists... so I´m looking for examples in other lineages...
Hola Marcos, como te va?
Los guanacos tienen diferente numero, porque las hembras no tienen caninos, no se si se da en otros camelidos.
Los caballos también tengo entendido, pero no estoy seguro
The huia bird, Heteralocha acutirostris, (now extinct) of New Zealand was a rare example of sexual dimorphism in beak - the male had a thin decurved beak for catching invertebrates, while the female had a robust beak for dealing with seeds and so on.
I can't think of a mammal where the male and female have different diets.
Regards,
Gerard.
Thank you Federico and Gerard for your examples,
- The differences in dentition in guanacos and horses between males and females are a great example of what I´m looking for... I had also read about enlarged caniniforms in males of certain cervid species, but in fact, I did not read nothing about differences in dental formula between males and females in those species... I will try to find when this canine grows in horses and guanacos to have a good explanation about these differences... THANK YOU!!!
For the huia bird, that´s a really unusual example, but its also very informative as an example of differences between males and females but not related to sexual dimorfism, but to differences in diet... THANK YOU TOO!!!
I´m going to search some info about what we talk about here.... CHEERS!!!
I found an example of differences in the dental formula possibly due to sexual dimorphism in dicynodonts...
Sullivan, C., Reisz, R.R. and Smith, R.M., 2003. The Permian mammal-like herbivore Diictodon, the oldest known example of sexually dimorphic armament. Proceedings of the Royal Society of London B: Biological Sciences, 270(1511), pp.173-178.
Marcos, me acabo de acordar de este caso de una especie de picaflor con dimorfismo sexual, pero de origen ecológico, si bien no son mamíferos y por lo tanto no hay variación dentaria, es un caso interesante, porque no es un dimorfismo de origen sexual, y tal vez te sirva como antecedente.
Acá va el laburo : https://www.ncbi.nlm.nih.gov/pubmed/10903203
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