little consensus attract multiple males confuse paternity lower infanticide o

Little consensus attract multiple males confuse

This preview shows page 2 - 3 out of 3 pages.

(little consensus): attract multiple males confuse paternity, lower infanticide o Concealed ovulation: (not conyeing physically your repro status) those that show aare more terrestrial, swelling not useful arboreal habitat, not see it lot of canopy cover, use chemical, scent marking or other olfactory signals Adaptive function: confuse paternity, mating w/ multi males no one sure when act repro peak, reduce potential for infanticide, promote paternal care: multi individ engaging in care, no ovulatory signs confuse when shes fertile so the male will stick around and provide care; linked w/ monogamy male stick around to know when fertile and share a bond needed to evolve monog Male mating strategy: expected to be less choosy, but deal w/ competitors o Direct male-male competition; sperm competition: those males produce most sperm, most viable, long lived probability of fertilization success higher o When? Can’t monopolize females [difficult if live in multi M/F], alpha male hard time monopolizing repro if multi F in estrus at some time, have direct comp. but too much o Seasonality breeding, a lot of F breeding at same time; 1or2 F receptive easier mono. o How to observe? Something to do w/ testes size, dif in body size dimorph, canines, tste Testes size much larger in multi M/F vs pair bonded or 1 male units o Eg. Chimpanzees, have direct comp. but probably also sperm comp. Infanticide an adaptive male strategy? Males kill dependent offspring (unweaned infants) mother still lactating babies still dependent (not juveniles) – not reproducing at this time o Observed in 60s w/ gray langurs, mostly 1-male units, observed during takeovers o An outside male coming into 1M unit, successful? orig male ousted, now has females o
Image of page 2
Image of page 3

You've reached the end of your free preview.

Want to read all 3 pages?

  • Spring '16
  • Jillian Maloney
  • Reproduction, w/ multi males, multi M/F, w/ monogamy male, likely mate w/, w/ peak food

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes