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Invasion Genetics

Invasion Genetics. The case of the killer bees. Invasion Genetics The case of the killer bees. Bee Biology History of the African honeybee introduction Africanized honeybee vs. European honeybee Other examples of invasions with hybridizations Discussion of (Schneider et al 2004).

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Invasion Genetics

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  1. Invasion Genetics The case of the killer bees

  2. Invasion GeneticsThe case of the killer bees • Bee Biology • History of the African honeybee introduction • Africanized honeybee vs. European honeybee • Other examples of invasions with hybridizations • Discussion of (Schneider et al 2004)

  3. Bee Biology • The 3 Castes

  4. History of the African honeybee introduction • Brazil (1957) – Warwick E. Kerr • Sought to develop a hybrid adapted to tropical climates • “Accidentally” released 26 Tanzanian queens (Apis mellifera scutellata) • ~200 miles/yr

  5. Honey badger - Mellivora capensis Aggressive behavior of A. mellifera scutellata • Follow for up to 1km (30m for European) • 19 stings / kg for fatality

  6. European Africanized Africanized vs. European honeybees • Africanized Bees • 3 times as many drones • More pollen • Less honey • Frequent swarming • Respond to floweringcues rather day length

  7. Other examples of invasion with hybridization • Atlantic Cordgass (Spartina alterniflora) - Pacific cordgrass (S. foliosa) • Eurasian Tamarix – hybrids are more invasive • Japanse & Himalayan knotweed (Polygonum cuspidatum, P. sachalinense) • Viable seed produced in hybrid but not in pure strains.

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