individual development. parent offspring conflict long-lived species (e.g. wandering albatross)...

Individual Development

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Individual Development

Parent offspring conflict

• Long-lived species (e.g. Wandering albatross)

• Short-lived species (e.g. Black-capped chickadee)

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Allocation of resources to offspring reduced unchanged

When handicapped

Page 3: Individual Development. Parent offspring conflict Long-lived species (e.g. Wandering albatross) Short-lived species (e.g. Black-capped chickadee) Allocation

Interspecific brood parasitism in the cuckoo (Cuculus canorus)

Adult Offspring

Page 4: Individual Development. Parent offspring conflict Long-lived species (e.g. Wandering albatross) Short-lived species (e.g. Black-capped chickadee) Allocation

Interspecific brood parasitism in the cuckoo (Cuculus canorus)

•may remove one of the host’s eggs•may consume the host’s eggs•may break the host’s eggs•lays eggs in the afternoon•lays eggs in less than 10 second•eggshell pattern similar to host’s

•may remove the host’s eggs•may remove the host’s offspring•matures rapidly•successful in begging

Adult Offspring

Page 5: Individual Development. Parent offspring conflict Long-lived species (e.g. Wandering albatross) Short-lived species (e.g. Black-capped chickadee) Allocation

QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.

Page 6: Individual Development. Parent offspring conflict Long-lived species (e.g. Wandering albatross) Short-lived species (e.g. Black-capped chickadee) Allocation

Circular arena used to test for filial imprinting in young birds

Page 7: Individual Development. Parent offspring conflict Long-lived species (e.g. Wandering albatross) Short-lived species (e.g. Black-capped chickadee) Allocation

Sexual imprinting in zebra finches

Bengalese finch parents

Zebra finch male

Bengalese finch female Zebra finch female

Page 8: Individual Development. Parent offspring conflict Long-lived species (e.g. Wandering albatross) Short-lived species (e.g. Black-capped chickadee) Allocation

Sexual imprinting

Acquisition phaseWhen? Till 30-40 days of ageResult: social preference formed

Consolidation phaseWhen? First courting attemptsResult: social preference linked

to sexual behaviour

Page 9: Individual Development. Parent offspring conflict Long-lived species (e.g. Wandering albatross) Short-lived species (e.g. Black-capped chickadee) Allocation

Sexual imprinting in the whooping crane

Tex, the only female whooping craneat the International Crane Foundationbreeding area in 1982, has beenhand-reared and therefore had im-printed on humans. She rejected themate provided to her, but could beenticed to lay eggs (artificially fertil-ized) by “dancing”with humans. Shepreferred Caucasian men of average size with dark hair.

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