Fish Population Biology

1
Fish Population Biology
2
(No Transcript)
3
(No Transcript)
4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
Fecundity number of eggs produced per female

• Fecundity is high when eggs are liberated freely.
• Fecundity and egg size are inversely related.
• Fecundity declines with increasing parental care.
• Parental care is relatively common in freshwater
  fishes.

9
Sculpins attach eggs to underside of cobbles.
Nests are defended by solitary males until young
disperse as juveniles.
10
Sunfishes and basses excavate small depressions
and defend nests from predators.
11
Salmonids construct redds, broadcast spawn over
them, and leave eggs to the vagaries of life.
12
Cyprinid Spawning Mounds (probably constructed by
a central stoneroller, Campostoma anamolum)
Used by a mixed species assemblage
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)