Lecture 11 Flashcards
Colonial invertebrates, different organisms that comprise a super-organism. Are physiologically integrated - can be separated by cannot live on their own
Zooid
Coral - colonial invertebrate
Man-of-war
Animal example of a zooid
- Cooperative care of the young
- Non-fertile members support fertile members
- There may be two or more generations overlapping in the same colony
Three major characteristics of eusocial animals
Females develop from fertilized eggs - diploid (sexual reproduction)
Males develop from unfertilized eggs - haploid (asexual reproduction, parthenogenesis)
Honeybees and haplodiploid
Parasite exploits food resources, parasite feeds on host’s tissue or blood, parasite often specializes on one host, may or may not kill the host, often smaller than the host. (tend to be more benign, are slow growing and don’t usually kill their host or get the host sick)
Conventional parasitism
Ticks, tapeworms, leeches, roundworms
Animal examples of conventional parasitism
When an animal lays its eggs in a host and the eggs hatch out and the larvae consumes the host
Parasitoidism
Parasitoid wasps - wasps lay eggs in the hornworm, the larvae eat the caterpillar and emerge to spin a cocoon and metamorphose into an adult wasp.
Example of a parasitoid animal
When an animal steal from another (may be nesting material, ornaments, food)
Kleptoparasitism
Frigate bird steals food, Satin Bower Bird steals ornaments
Animal examples of kleptoparasitism
Parasite gets its host to raise its young (can be a specialist or generalist)
Social parasitism
Cowbird parasitizes over 200 species of eggs - lays egg in nest of warbler for it to raise
Animal example of social parasitism
A close, prolonged association between two or more different biological species.
Commensalism - one animal benefits while the situation is benign for the other
Mutualism - both animals benefit
Symbiotic relationships
Crustacean carries a poisonous mollusk on his back
Commensalism/symbiotic relationship
Nocturnal bats drink nectar and pollinates the flowers
Mutualism/symbiotic relationship