Helper effects: Red wolves Flashcards
1
Q
Red Wolf author and date?
A
Sparkman 2010
2
Q
What did the study test?
A
Long and short term effects of helpers?
3
Q
What did the study show about group density and helping effects on young?
A
- Positively correlated with pup mass and survival at low population density,
- Negatively correlated with mass/size at high density
- with no relation to survival.
- mass/size differences persisted into adulthood for both sexes
More competition for resources?
4
Q
What long term effects did helpers have on males or females?
A
- Females had higher lifetime reproductive success.
- Males exhibited diminished lifetime reproductive performance
5
Q
How does the effect of helpers increasing juvenile body size effect them later in life?
A
Heavier juveniles often experience more successful reproductive years
6
Q
Example species where heavier juveniles have more reproductive sucess?
A
Meerkat females: earlier first breedings and increased fecundity
Prairie voles: Heavier females are more likely to get a mate and also show increased fecundity
7
Q
Who were the helpers?
A
Offspring from previous years that delayed dispersal
8
Q
A
