What are male reproductive strategies?
The optimal reproductive strategy of a hypothetical male primate is characterized by rapid sexual maturation, followed by life-long exclusive access to an unlimited number of fertile females willing to mate, and offspring survival should be independent of paternal care.
What do female reproductive strategies focus on?
Because the reproductive physiology of male and female primates differs (males produce sperm and cannot gestate or lactate; females produce eggs and gestate and lactate), males and females differ with regard to parental investment and sexual selection strategies. Female strategies, on the one hand, focus on obtaining …
What behaviors do natural selection generally favor?
Natural selection generally favors behaviors that: a. enhance survival and reproduction.
What factors contribute to a female primate’s success at feeding?
Quality, distribution, and availability are the three key factors that contribute to primates' success at feeding.
What is reproductive strategy?
A reproductive strategy is defined as the way in which a species allocates or budgets energy to produce viable offspring. Energy is diverted into actual offspring and into parental care.
What is the ultimate goal of reproductive strategies?
Regardless of which reproductive strategy a species develops, the goal of all the strategies on the r/K-selection continuum is the successful production of enough offspring to, at least, replace the parental generation.
Why do female chimpanzees mate with as many males as possible?
Having a longer length of receptivity allows females more time to be able to mate with multiple males, which in turn makes multiple males think they may be the father of her offspring and hence help protect (or at least not harm) that offspring.
What does variation in predator specific vocalizations in the Diana monkeys of the Tai forest include quizlet?
Variation in predator-specific vocalizations in the monkeys of the Tai Forest: includes two different loud alarm calls in response to predators, aerial and terrestrial.
What are the reproductive strategies for plant reproduction?
Sexual reproduction in flowering plants involves the production of separate male and female gametophytes that produce gametes. The anther produces pollen grains which contain male gametophytes. The pollen grains attach to the stigma on top of a carpel, in which the female gametophytes (inside ovules) are located.
What’s a reproductive strategy?
The term reproductive strategy is loosely used to refer to the way an animal mates and/or raises offspring. It could refer to things like sexual vs. asexual reproduction. It could also refer to one reproductive episode in a lifetime, semelparous reproduction, vs.
Why do humans mate in private?
Such a state, he suggests, would likely have encouraged other males to attempt to mate with her. Thus, privacy, or perhaps more accurately, seclusion, allowed the male to maintain control over a sexual partner—while also allowing for continued cooperation within a group.
How do humans mate?
Answer and Explanation: Humans mate through a process called sexual intercourse. Human reproduction depends on the fertilization of a woman's ova (egg) by a man's sperm.
What does variation in predator-specific vocalizations in the Diana monkeys of the Tai forest include?
Variation in predator-specific vocalizations in the monkeys of the Tai Forest: includes two different loud alarm calls in response to predators, aerial and terrestrial.
Why do predator-specific vocalizations in Diana monkeys vary?
Terms in this set (5) Predator-specific vocalizations in Diana monkeys vary based on: the type of predator and the predator's attack strategy. Sexual dimorphism: tends to be lower than in groups where males disperse and compete with unrelated males.
Why do people lose their tails?
Recently, researchers uncovered a genetic clue about why humans have no tails. They identified a so-called jumping gene related to tail growth that may have leaped into a different location in the genome of a primate species millions of years ago. And in doing so, it created a mutation that took our tails away.
Why do humans prefer to mate in private?
Such a state, he suggests, would likely have encouraged other males to attempt to mate with her. Thus, privacy, or perhaps more accurately, seclusion, allowed the male to maintain control over a sexual partner—while also allowing for continued cooperation within a group.
Can humans go in heat?
This is also referred to as being "in heat". In contrast, females of species with menstrual cycles can be sexually active at any time in their cycle, even when they are not about to ovulate. Humans have menstrual cycles rather than estrous cycles.
What do Polyandrous residence patterns represent?
Polyandrous residence patterns represent: a social grouping in which males cooperate in parenting activities.
How is the study of primate vocal communication important?
Primate vocalizations can be useful tools in examining many different questions within the language evolution debate, including the evolutionary pressures that may have led to more complex communication and the modality in which human language arose (vocal vs. gestural).
Did early man have a tail?
For half a billion years or so, our ancestors sprouted tails. As fish, they used their tails to swim through the Cambrian seas. Much later, when they evolved into primates, their tails helped them stay balanced as they raced from branch to branch through Eocene jungles.
Can humans grow wings?
For instance, while you might grow taller thank your siblings, hox genes make sure you only grow two arms and two legs – and not eight legs like a spider. In fact, a spider's own hox genes are what give it eight legs. So one main reason humans can't grow wings is because our genes only let us grow arms and legs.
Can a man sense when a woman is on her period?
Great news! A recent study in the journal Ethology reveals that men can detect from a woman's voice whether she is menstruating. Psychologists Nathan Pipitone from Adams State College and Gordon Gallup from SUNY Albany recorded 10 women counting from one to five, at four different points in their menstrual cycles.
Which kin based support strategy increases the reproductive success of red howler males?
Male kin-based coalitions allow male red howler monkeys to ensure their reproductive success.
Which residence pattern has the highest degree of competition between males?
Single-male groups have the highest degree of competition among the various residence patterns. The male in this group is under continual threat from outside males who want to overthrow him and take over the group.
How do non-human primates communicate with each other?
Odors, vocalizations, gestures, and facial expressions are used by non-human primates to inform others of their psychological state and present concerns, which is an important clue to what they are likely to do next.
What was the original adaptive purpose of primate vocalizations?
Vocalizations are a pervasive feature of nonhuman primate social life, yet we know surprisingly little about their function. We review studies supporting the hypothesis that many primate vocalizations function to facilitate social interactions by reducing uncertainty about the signaler's intentions and likely behavior.
Do humans have a mating season?
What we can know for sure is that even though it appears humans may have a quasi-mating season, it is not really a true one as women are receptive to sex year-round and ovulate every 28 days, not annually.
Can humans have wings?
For instance, while you might grow taller thank your siblings, hox genes make sure you only grow two arms and two legs – and not eight legs like a spider. In fact, a spider's own hox genes are what give it eight legs. So one main reason humans can't grow wings is because our genes only let us grow arms and legs.
Did humans have a tail?
Humans do have a tail, but it's for only a brief period during our embryonic development. It's most pronounced at around day 31 to 35 of gestation and then it regresses into the four or five fused vertebrae becoming our coccyx. In rare cases, the regression is incomplete and usually surgically removed at birth.
What if humans had gills?
In short, the presence of gills would lead to speciation into aquatic and terrestrial humans. Alternately, if the terrestrial humans weren't as well suited to life on land as the neanderthals were, humans would stick to coastal regions and neanderthals would be the dominant terrestrial hominid.