Browsing Escuela de Ciencias Biológicas by Subject "GUSANO DE TERCIOPELO"

Now showing items 1-3 of 3

    • An undescribed species of velvet worm from Chiapas, Mexico (Onychophora: Peripatidae) 

      Toledo-Matus, Xocoyotzin; Rivera Velázquez, Gustavo; Monge-Nájera, Julián; Morera-Brenes, Bernal (Universidad Estatal a Distancia (Costa Rica), 2018-06)
      Onychophoran worms are considered “living fossils” because their basic body structure has changed little in 500 million years. Only two species have been properly recorded from Mexico: Macroperipatus perrieri from ...

    • Oscillation of the velvet worm slime jet by passive hydrodynamic instability 

      Concha, Andres; mellado, paula; Morera, Bernal; Sampaio Costa, Cristiano; Mahadevan, Lakshminarayanan; Monge Nájera, Julián (Nature Communications, 2015-03-17)
      The rapid squirt of a proteinaceous slime jet endows velvet worms (Onychophora) with a unique mechanism for defence from predators and for capturing prey by entangling them in a disordered web that immobilizes their target. ...

    • Retro fashion: did onychophorans abandon ovoviviparity and revert to laying eggs? 

      Barquero-González, Pablo; Morera, Bernal; Monge-Najera, Julian; barquero-gonzalez, pablo (Universidad de Costa Rica (Costa Rica), 2019)
      Viviparity is so advantageous that it has evolved at least 140 times in the invertebrates, but some Australian and New Zealand onychophorans have gone back, abandoning ovoviviparity to return to laying eggs. Why? Here we ...