Societies, mutualists, & parasites - part 3 Flashcards

1
Q

Diversity of non-social parasites

A
  • Endoparasites
  • Animal ectoparasites
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2
Q

diversity of non-social parasites - endoparasites example

A

Fungal parasite that makes “zombie ants”

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3
Q

diversity of non-social parasites - animal ectoparasites example

A
  • ant nest beetles
  • rove beetles and army ants
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4
Q

Diversity in the categories of social parasitism

A
  • Social mutualism turned social parasitism.
  • Xenobiosis.
  • Temporary social parasitism.
  • Dulosis.
  • Inquilinism.
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5
Q

endoparasites - fungal parasite that makes zombie ants

A
  • Ophiocordyceps
  • can cause extreme behavioral modification in its ant hosts
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6
Q

Ophiocordyceps - what aids it’s dispersal

A

a “zombie ant” extended phenotype aids its dispersal to new hosts

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7
Q

Ophiocordyceps - what does it exploit in the ants

A

exploits the social foraging and organization of the ant colony

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8
Q

animal ectoparasites

A
  • Many non-social animal parasites of societies are “predators within”.
  • All employ some form of invisibility, mimicry, or attractiveness.
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9
Q

Ectoparasites - In some cases, the _________________ have ______________________________, parasitizing a diversity of social hosts.

A
  • parasitic lineages
  • diversified into large numbers of species
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10
Q

ectoparasites: ant nest beetles - what do beetles use to infiltrate nests

A

attractiveness to infiltrate ant nests and move freely within, while preying on ant larvae.

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11
Q

ectoparasites: ant nest beetles - how do the beetles use attractiveness to infiltrate

A

The beetle “stridulate” to attract host ants, and produce appeasing chemicals in special glands on the head and antennae.

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12
Q

ectoparasites - rove beetles and army ants

A
  • they are mimetic predators within and consume larvae and adult ants
  • striking example of convergence
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13
Q

ectoparasites - how is it an example of convergence

A

multiple evolutionary events resulting in the same mimic forms within different army ant hosts

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14
Q

Diversity in the categories of social parasitism - Social mutualism turned social parasitism

A

ant-aphid example

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15
Q

social mutualism turned social parasitism - ant-aphid

A
  • Discovery of a novel “caste” within a certain aphid species that is carried into the brood pile of the ants.
  • In the brood pile the individuals of this novel caste drink blood from the ant larvae
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16
Q

diversity in the categories of social parasitism - xenobiosis definition

A

social parasitism where the parasite society nests inside or near to the the nest of the host society and steals resources from the host — kleptoparasitism.

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17
Q

xenobiosis - what may the resources include

A
  • may include the shelter itself
  • can include more direct interactions in the form of solicited, regurgitated food
18
Q

xenobiosis - Hosts and parasites are typically __________________

A

distantly related

19
Q

xenobiosis - what is it typically dependent on

A
  • it often depends on chemical mimicry
  • especially for xenobiosis within the host nest, often through within-nest acquisition of odor chemicals
20
Q

xenobiosis example

A

Megalomyrmex ants

21
Q

xenobiosis - Megalomyrmex ants

A
  • they are xenobiotic social parasites of fungus gardening ants.
  • Megalomyrmex ants eat the fungus of their host (and some larvae).
22
Q

Diversity in the categories of social parasitism - temporary social parasitism

A

Founding individual of the parasitic species infiltrates an existing society of another species and replaces the reproductive as a founding strategy

23
Q

temporary social parasitism - what do they parasitize

A

the whole social mechanism of brood rearing in the colony founding stage.

24
Q

temporary social parasitism - why is this called ‘temporary’

A
  • the mixed-species nests as the orphaned host workers slowly die off
  • then the nest is entirely replaced by parasite workers that perform normal worker tasks.
25
Q

temporary social parasitism - Typically _________________ species

A

closely related

26
Q

temporary social parasitism - why do they have to be closely related

A

the parasite needs to have similar traits and brood rearing mechanisms in order to infiltrate the host colony

27
Q

temporary social parasitism - example

A

Ant species Bothriomyrmex decapitans

28
Q

diversity in the categories of social parasitism - Dulosis definition

A

Permanent social parasitism where the replacement of the host reproductive with the parasite is followed by subsequent acquisition of new host larvae from raided nearby host colonies.

29
Q

dulosis - what does it parasitize

A

the whole social mechanism of brood rearing throughout the parasites life.

30
Q

Dulotic species are _____________ to their host, and often parasitize _____________ species.

A
  • closely related
  • multiple host
31
Q

dulosis - results in _________________________________ of parasite and host, and often multiple host species

A

permanent mixed-species nests

32
Q

diversity of social parasitism - Inquilinism definition

A

A permanent social parasitism in which a specialized reproductive parasite relies entirely on the social mechanisms of the host

33
Q

inquilinism - Typically, inquilines have effectively ___________, with workers no longer produced

A

lost sociality

34
Q

inquilinism - example

A

Teleutomyrmex schneideri

35
Q

inquilinism - Teleutomyrmex schneideri

A
  • As queen lays eggs, parasite is latched onto the rear of the queen and lays eggs into egg pile of queen
  • It’s so dependent on the host that it loses sociality
36
Q

What do we expect to see with respect to trait evolution and species production as mutualisms and parasitisms evolve?

A

We might expect to see coupled evolutionary transitions in the traits of mutualism and parasitism partners through time

37
Q

How could we study trait evolution and species production as mutualisms as parasitisms evolve?

A
  • We can study the evolution of mutualisms and parasitisms by comparing phylogenetic trees of partners
  • looking for signature of co-evolution.
38
Q

define coevolution

A

The reciprocal evolution in two or more interacting species of adaptations selected by the interactions between these species.

39
Q

identifying mutualism and parasitism partners through time

A
  • Timing of traits involved in mutualistic/parasitic partnership
  • Evolution of associations (emanine the tips)
40
Q

identifying mutualism and parasitism partners through time - timing of traits involved

A

shows that they co-evolved if the timing is the same

41
Q

identifying mutualism and parasitism partners through time - evolution of associations

A
  • there can be a:
  • One-to-one host-parasite relationship
  • One host to many closely related (monophyletic) parasites
  • Many closely related (monophyletic) hosts to one parasite
  • One host to many distantly related (polyphyletic) parasites
  • “Co-speciation” of host and parasite lineages