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- Nieuwe soorten kunnen geïsoleerd raken van de voorouderlijke soorten met betrekking tot de voortplanting, zelfs als ze in hetzelfde gebied voorkomen -
- Habitat-specific selectionLake Malawi =sandy habitat at bottom of lake, rocky habitat on sides. Initially fish lived in same habitat but later filled these two empty niches. Beneficial mutations were selected in each and cichlids in each habitat developed separately, surviving to pass on favourable traits for their habitat.
- Isn't that cousin Jerry?
- We don't swim out there okay? There's some weird looking fish amongst that sand
- Food-specific selectionInitially there were few fish in the lake (little interspecific competition). As populations grew, so did competition. The lake had a large number of empty feeding niches. Different fish began utilising specific food sources, filling various empty niches and developing separately.
- Can we have dead skin and fish parasites for dinner?
- You must eat all you plankton son!
- I love to eat rock algae!
- Seksuele en Handicap selectieFelle kleuren en patronen bij de mannetjes waren een voorplantingsstragie. Wilekeurige mutaties wisselend tot een verscheidenheid aan nieuwe kleuren en patronen. Dit bleek voordelig, omdat vrouwtjes vooral alleen maar de mannetjes met de felle kleurden kiesten. Door succesvolle reproductie werden nieuwe allelen voor de nieuwe kleuren in de geselecteerde populatie.
- Cichlidae fish have evolved into more than 500 species today. The rapid speciation over a very short period illustrates sympatric speciation, where new species originate in the same geographical area as ancestral species.VERY COOL !
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