1 / 8

Mating systems and parental care

B3.2 lesson 6. Mating systems and parental care. - Describe the different types of mating systems (Grade C) -To explain how parental care is a successful evolutionary strategy (Grade A). What is parental care?. This includes: Feeding Protecting Helping offspring to interact with others.

kobe
Download Presentation

Mating systems and parental care

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. B3.2 lesson 6 Mating systems and parental care -Describe the different types of mating systems (Grade C) -To explain how parental care is a successful evolutionary strategy (Grade A)

  2. What is parental care? This includes: • Feeding • Protecting • Helping offspring to interact with others http://www.bbc.co.uk/nature/adaptations/Parental_investment#p005jx1l http://www.bbc.co.uk/nature/adaptations/Parental_investment#p007hrmq

  3. Caterpillar wasps • Caterpillar wasps lay their eggs inside caterpillars so the young eat the caterpillar from the inside.

  4. Mating Systems • Monogamous species- males and females pair for the breeding season or even for life. Example: swans • Polygamous species- an individual mates with a number of partners of the opposite sex during a breeding season. Example: deer

  5. Monogamy and polygamy • What are the advantages of polygamy to the successful males, and what are the advantages to the females? • What are the disadvantages? • What about the offspring?

  6. Definitions • Monogamous – where males and females pair for the breeding season or even for life. • Polygamous – where one individual mates with a number of opposite sex partners during the breeding season. • Pair bonding – the behaviour which forms bonds between a male and female of the same species keeping them together.

  7. Worksheet B3.2.6a- Parental care in flamingos • Worksheet B3.2 6b – What affects the amount of parental care?

  8. What is happening here? Discuss

More Related