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3Episodes
Category: Science

A fun take on the latest science news with enough data to sink your teeth into. Lagrange Point goes beyond the glossy summary and gets in depth with the research from across the world.

Episode 327 - Hippos and Algae, Lions and Porcupines, plus Narwhals.

May 20, 2019

What connects Hippos, Algae and keeping the rivers of Africa healthy? What causes Lions to square-off against Porcupines? What is keeping the Narwhal population healthy despite it's genetic diversity? We look at the strange interconnection between species and how small changes in one ecosystem can destabilise a whole species.

Hippos help keep the rivers and lakes of Africa healthy...through their poo.

Hippos are essential in pumping silicon from the savannah into the rivers and lakes of Africa.

Lions hunt lots of creatures, but what needs to happen for them to try attacking a Porcupine?

Porcupines vs Lion sounds like a March Mammal Madness battle, but what causes a Lion to go after such a tough prey?

The Narwhals population is rebounding but it its still at risk due to it's shallow gene pool.

Can a species survive with a shallow gene pool?

References:

  1. Schoelynck, J., Subalusky, A.L., Struyf, E., Dutton, C.L., Unzué-Belmonte, D., Van de Vijver, B., Post, D.M., Rosi, E.J., Meire, P., Frings, P. Hippos (Hippopotamus amphibius): The animal silicon pumpScience Advances, 2019 DOI: 10.1126/sciadv.aav0395
  2. Julian C. Kerbis Peterhans, Gastone G. Celesia, Thomas P. Gnoske. Lion-Porcupine Interactions in Africa, Including Impacts on Lion Predatory BehaviorJournal of East African Natural History, 2019; 108 (1): 1 DOI: 10.2982/028.108.0101
  3. Westbury, M.V. Narwhal genome reveals long-term low genetic diversity despite current large abundance sizeiScience, 2019 DOI: 10.1016/j.isci.2019.03.023