Reproduction in sea Flashcards
Simon
1
Q
Invertebrate life history strategies combine variations of…
A
- Maximum potential life span
- Number of breeding episodes per lifetime
- Pattern of gamete discharge
- Synchronisation between male and female?
- Relative size & cost of gametes
- Mode of development
- Extent of differences in selective pressures to which adults
& juveniles are exposed - Proportion of total available resources allocated to
reproduction
2
Q
Patterns of gamete discharge
A
- Mass release
- Discharge as they are produced
- Sperm storage
3
Q
High density & viscosity =
A
Gametes wont sink
4
Q
High humidity ‘Wetness’ =
A
Gametes wont dry up
5
Q
High concentrations of
dissolved nutrients =
A
Larvae can feed passively (eg. osmosis)
6
Q
Advantages of broadcast spawning
A
6
Q
Low concentrations of
dissolved O2 =
A
Eggs/ larvae risk suffocation
7
Q
Disadvantages of broadcast spawning (10)
A
8
Q
A
