Blackpill Why are some animals more sexually dimorphic than other ones?

[wereq]

AI Overview

Sexual dimorphism, or differences between sexes in a species, is driven by a combination of natural selection and sexual selection. Species with greater sexual dimorphism often exhibit stronger competition for mates, where males may develop larger sizes, more elaborate ornamentation, or even specialized weapons to attract females and outcompete rivals. Conversely, species with less dimorphism tend to have more stable mating systems, like monogamy, where both sexes may be more similar in appearance and behavior.

Here's a more detailed look at the factors influencing sexual dimorphism:

1. Sexual Selection:

• Competition:
  In many species, males compete for access to females. This competition can lead to the evolution of larger size, stronger muscles, or more aggressive behavior in males.
  
  
• Mate Choice:
  Females often have preferences for certain traits in males, such as bright colors, elaborate displays, or complex songs. This can lead to the evolution of these traits in males, even if they don't directly benefit survival.
  
  
• Resource Competition:
  In some cases, males may compete directly for resources, such as food or territory, which can lead to differences in size and morphology.

2. Natural Selection:

• Niche Specialization:
  Sometimes, the sexes may occupy different niches, such as different food sources or habitats. This can lead to differences in morphology or behavior that allow them to exploit these niches more effectively.
  
  
• Life History Strategies:
  Differences in reproductive investment between the sexes (e.g., egg size, parental care) can also contribute to sexual dimorphism.
  
  
• Ecological Factors:
  Environmental factors, such as predation pressure or resource availability, can also influence the extent of sexual dimorphism.

3. Examples:

• Primate Evolution:
  The degree of sexual dimorphism in primates correlates with social structure and mating systems. Species with polygynous mating systems (one male, multiple females) often exhibit greater sexual dimorphism than monogamous species.
  
  
• Fish:
  Some fish species, like the seadevil, have extreme sexual dimorphism, with males being dwarfed by females and becoming parasitic, attached to the female and reliant on her for nutrients, according to a Treehugger article.
  
  
• Birds:
  Many bird species display sexual dimorphism in plumage, with males often having brighter or more elaborate colors and patterns used for courtship and display, as noted by Britannica.

 

[LWii]

I hate women

 

[wereq]

I hate women

 

[City Incel]

AI Overview

Sexual dimorphism, or differences between sexes in a species, is driven by a combination of natural selection and sexual selection. Species with greater sexual dimorphism often exhibit stronger competition for mates, where males may develop larger sizes, more elaborate ornamentation, or even specialized weapons to attract females and outcompete rivals. Conversely, species with less dimorphism tend to have more stable mating systems, like monogamy, where both sexes may be more similar in appearance and behavior.

Here's a more detailed look at the factors influencing sexual dimorphism:

1. Sexual Selection:

• Competition:
  In many species, males compete for access to females. This competition can lead to the evolution of larger size, stronger muscles, or more aggressive behavior in males.
  
  
• Mate Choice:
  Females often have preferences for certain traits in males, such as bright colors, elaborate displays, or complex songs. This can lead to the evolution of these traits in males, even if they don't directly benefit survival.
  
  
• Resource Competition:
  In some cases, males may compete directly for resources, such as food or territory, which can lead to differences in size and morphology.

2. Natural Selection:

• Niche Specialization:
  Sometimes, the sexes may occupy different niches, such as different food sources or habitats. This can lead to differences in morphology or behavior that allow them to exploit these niches more effectively.
  
  
• Life History Strategies:
  Differences in reproductive investment between the sexes (e.g., egg size, parental care) can also contribute to sexual dimorphism.
  
  
• Ecological Factors:
  Environmental factors, such as predation pressure or resource availability, can also influence the extent of sexual dimorphism.

3. Examples:

• Primate Evolution:
  The degree of sexual dimorphism in primates correlates with social structure and mating systems. Species with polygynous mating systems (one male, multiple females) often exhibit greater sexual dimorphism than monogamous species.
  
  
• Fish:
  Some fish species, like the seadevil, have extreme sexual dimorphism, with males being dwarfed by females and becoming parasitic, attached to the female and reliant on her for nutrients, according to a Treehugger article.
  
  
• Birds:
  Many bird species display sexual dimorphism in plumage, with males often having brighter or more elaborate colors and patterns used for courtship and display, as noted by Britannica.

They should've mated with me instead.
I used to be special.
So fucking special.

 

[Failed Pullout]

There are some birds

Birds:
Many bird species display sexual dimorphism in plumage, with males often having brighter or more elaborate colors and patterns used for courtship and display, as noted by Britannica.

True but remember there are birds that don't fall under this category at all for example, budgies both the males and females have bright colorful plumage.

 

[Lazyandtalentless]

Facial attractiveness, symmetry and cues of good genes - PubMed

Cues of phenotypic condition should be among those used by women in their choice of mates. One marker of better phenotypic condition is thought to be symmetrical bilateral body and facial features. However, it is not clear whether women use symmetry as the primary cue in assessing the phenotypic...

pubmed.ncbi.nlm.nih.gov

Cues of upper body strength account for most of the variance in men's bodily attractiveness - PubMed

Evolution equips sexually reproducing species with mate choice mechanisms that function to evaluate the reproductive consequences of mating with different individuals. Indeed, evolutionary psychologists have shown that women's mate choice mechanisms track many cues of men's genetic quality and...

pubmed.ncbi.nlm.nih.gov

Yeah, exactly… sexual dimorphism refers to the physical differences between males and females that evolved due to mating pressures. Traits like height, upper body strength, and masculine facial structure in men often signal formidability and genetic fitness, which is why they’re seen as attractive.

Research supports this: Sell et al. (2017) found that upper body strength alone explained over 70% of men’s bodily attractiveness, with no drop-off at the high end… stronger men were consistently rated as more attractive. That suggests women evolved to prefer cues of physical dominance and protection, likely because they signaled a man’s ability to survive, compete, and provide.

At the same time, Scheib et al. (1999) showed that facial symmetry and masculine features, like prominent cheekbones and a longer lower face, also strongly predict attractiveness, even when people aren’t consciously aware of symmetry. These traits are associated with developmental stability and testosterone, both indicators of good genes.

So yeah, a lot of what we find attractive is deeply rooted in evolutionary biology… we’re hardwired to respond to traits that historically signaled health, strength, and reproductive value.