Lecture 17 - Hydrothermal vents, whale falls, seeps

Question 1

Rimicaris exoculata

Answer 1

Vent shrimp
High abundance of epibiotic bacteria beneath their carapace, provide most of their Carbon
Ingest large amounts of metal sulphides

Question 2

Most vent species are…

Answer 2

endemic, specialized for vents

Question 3

Families on vents

Answer 3

Bathymodiolidae - mussles
Vesicomyidae - clams
Vestimentifera - tubeworms
Bresiliidae - shrimp

Question 4

Animals only found on hot vents

Answer 4

Bathograeid crabs

Allvinellid polychaetes

Question 5

Distribution of vent species

Answer 5

Dispersal primarily along rift system
Genetically similar species close on rift with differences increasing with distance
No dispersal across long breaks in rift system

Question 6

Stepping stone dispersal

Answer 6

Tubeworms with free-swimming larvae

Question 7

Island model dispersal

Answer 7

Mollusks with free-swimming larvae

Question 8

Ridge and segment-scale isolation

Answer 8

amphipod that broods its young

Question 9

Brine pool environment

Answer 9

Hypersaline pool with distinct mussel bed barrier

Question 10

Ice worms

Answer 10

polychaetes feeding on bacteria from frozen methane hydrate at hydrocarbon seeps