What evolutionary advantage do viruses have in host specificity?












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Warning: I have almost no knowledge of biology past the high school level.



Viruses generally have three components: the DNA, the virus protein coat, and an outer membrane "decorated" with these surface marker glycoproteins. I am thinking that a virus would want to infect as many hosts as possible, so that it would reproduce as much as possible, why would a virus just infect one group of organisms.



What evolutionary advantage do viruses have in host specificity?










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1












$begingroup$


Warning: I have almost no knowledge of biology past the high school level.



Viruses generally have three components: the DNA, the virus protein coat, and an outer membrane "decorated" with these surface marker glycoproteins. I am thinking that a virus would want to infect as many hosts as possible, so that it would reproduce as much as possible, why would a virus just infect one group of organisms.



What evolutionary advantage do viruses have in host specificity?










share|improve this question











$endgroup$












  • $begingroup$
    Tell me if there are issues with this question, I will reply as soon as possible
    $endgroup$
    – JavaScriptCoder
    5 hours ago














1












1








1





$begingroup$


Warning: I have almost no knowledge of biology past the high school level.



Viruses generally have three components: the DNA, the virus protein coat, and an outer membrane "decorated" with these surface marker glycoproteins. I am thinking that a virus would want to infect as many hosts as possible, so that it would reproduce as much as possible, why would a virus just infect one group of organisms.



What evolutionary advantage do viruses have in host specificity?










share|improve this question











$endgroup$




Warning: I have almost no knowledge of biology past the high school level.



Viruses generally have three components: the DNA, the virus protein coat, and an outer membrane "decorated" with these surface marker glycoproteins. I am thinking that a virus would want to infect as many hosts as possible, so that it would reproduce as much as possible, why would a virus just infect one group of organisms.



What evolutionary advantage do viruses have in host specificity?







evolution virology






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edited 4 hours ago









Remi.b

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58.4k8108194










asked 5 hours ago









JavaScriptCoderJavaScriptCoder

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16518












  • $begingroup$
    Tell me if there are issues with this question, I will reply as soon as possible
    $endgroup$
    – JavaScriptCoder
    5 hours ago


















  • $begingroup$
    Tell me if there are issues with this question, I will reply as soon as possible
    $endgroup$
    – JavaScriptCoder
    5 hours ago
















$begingroup$
Tell me if there are issues with this question, I will reply as soon as possible
$endgroup$
– JavaScriptCoder
5 hours ago




$begingroup$
Tell me if there are issues with this question, I will reply as soon as possible
$endgroup$
– JavaScriptCoder
5 hours ago










1 Answer
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$begingroup$

It is true for any living creature, that it would be great for it if it could thrive in all environments. Any creature would do better if it had a greater ecological niche while remaining as competitive in each of these niches. However, competition lead species to specialize in specific niches. Of course, some species are more generalist and some are more specialist but I won't go into these details.



When it comes to parasites, such as viruses, the story is the same. A host is an environment. Being less specific would be great but the immune system is no easy detail to get around. Viruses are often quite specific to a given species, just because it evolved to be efficient for a given host but tend not to be that efficient in other hosts.



Note that parasites are not only species specific but also often tissue specific and specific to the specifics genetics of the host (e.g. malaria).



Somewhat related posts:




  • Why do parasites sometimes kill their hosts?

  • Why aren't all infections immune-system resistant?




Thank you @DeNovo for helpful comment






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  • 1




    $begingroup$
    Good answer. I'd note that, not only are viruses often specific to a given species, they're often quite tissue specific. I think there are several Q/A pairs that may relate to this question. The one you linked, and also this, though asked about bacteria. The basic question (why doesn't some group of organisms just take over everything everywhere) is very similar.
    $endgroup$
    – De Novo
    4 hours ago












  • $begingroup$
    Thank you! Helps the day before my bio test ;)
    $endgroup$
    – JavaScriptCoder
    3 hours ago











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1 Answer
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active

oldest

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1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









3












$begingroup$

It is true for any living creature, that it would be great for it if it could thrive in all environments. Any creature would do better if it had a greater ecological niche while remaining as competitive in each of these niches. However, competition lead species to specialize in specific niches. Of course, some species are more generalist and some are more specialist but I won't go into these details.



When it comes to parasites, such as viruses, the story is the same. A host is an environment. Being less specific would be great but the immune system is no easy detail to get around. Viruses are often quite specific to a given species, just because it evolved to be efficient for a given host but tend not to be that efficient in other hosts.



Note that parasites are not only species specific but also often tissue specific and specific to the specifics genetics of the host (e.g. malaria).



Somewhat related posts:




  • Why do parasites sometimes kill their hosts?

  • Why aren't all infections immune-system resistant?




Thank you @DeNovo for helpful comment






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Good answer. I'd note that, not only are viruses often specific to a given species, they're often quite tissue specific. I think there are several Q/A pairs that may relate to this question. The one you linked, and also this, though asked about bacteria. The basic question (why doesn't some group of organisms just take over everything everywhere) is very similar.
    $endgroup$
    – De Novo
    4 hours ago












  • $begingroup$
    Thank you! Helps the day before my bio test ;)
    $endgroup$
    – JavaScriptCoder
    3 hours ago
















3












$begingroup$

It is true for any living creature, that it would be great for it if it could thrive in all environments. Any creature would do better if it had a greater ecological niche while remaining as competitive in each of these niches. However, competition lead species to specialize in specific niches. Of course, some species are more generalist and some are more specialist but I won't go into these details.



When it comes to parasites, such as viruses, the story is the same. A host is an environment. Being less specific would be great but the immune system is no easy detail to get around. Viruses are often quite specific to a given species, just because it evolved to be efficient for a given host but tend not to be that efficient in other hosts.



Note that parasites are not only species specific but also often tissue specific and specific to the specifics genetics of the host (e.g. malaria).



Somewhat related posts:




  • Why do parasites sometimes kill their hosts?

  • Why aren't all infections immune-system resistant?




Thank you @DeNovo for helpful comment






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Good answer. I'd note that, not only are viruses often specific to a given species, they're often quite tissue specific. I think there are several Q/A pairs that may relate to this question. The one you linked, and also this, though asked about bacteria. The basic question (why doesn't some group of organisms just take over everything everywhere) is very similar.
    $endgroup$
    – De Novo
    4 hours ago












  • $begingroup$
    Thank you! Helps the day before my bio test ;)
    $endgroup$
    – JavaScriptCoder
    3 hours ago














3












3








3





$begingroup$

It is true for any living creature, that it would be great for it if it could thrive in all environments. Any creature would do better if it had a greater ecological niche while remaining as competitive in each of these niches. However, competition lead species to specialize in specific niches. Of course, some species are more generalist and some are more specialist but I won't go into these details.



When it comes to parasites, such as viruses, the story is the same. A host is an environment. Being less specific would be great but the immune system is no easy detail to get around. Viruses are often quite specific to a given species, just because it evolved to be efficient for a given host but tend not to be that efficient in other hosts.



Note that parasites are not only species specific but also often tissue specific and specific to the specifics genetics of the host (e.g. malaria).



Somewhat related posts:




  • Why do parasites sometimes kill their hosts?

  • Why aren't all infections immune-system resistant?




Thank you @DeNovo for helpful comment






share|improve this answer











$endgroup$



It is true for any living creature, that it would be great for it if it could thrive in all environments. Any creature would do better if it had a greater ecological niche while remaining as competitive in each of these niches. However, competition lead species to specialize in specific niches. Of course, some species are more generalist and some are more specialist but I won't go into these details.



When it comes to parasites, such as viruses, the story is the same. A host is an environment. Being less specific would be great but the immune system is no easy detail to get around. Viruses are often quite specific to a given species, just because it evolved to be efficient for a given host but tend not to be that efficient in other hosts.



Note that parasites are not only species specific but also often tissue specific and specific to the specifics genetics of the host (e.g. malaria).



Somewhat related posts:




  • Why do parasites sometimes kill their hosts?

  • Why aren't all infections immune-system resistant?




Thank you @DeNovo for helpful comment







share|improve this answer














share|improve this answer



share|improve this answer








edited 3 hours ago

























answered 4 hours ago









Remi.bRemi.b

58.4k8108194




58.4k8108194








  • 1




    $begingroup$
    Good answer. I'd note that, not only are viruses often specific to a given species, they're often quite tissue specific. I think there are several Q/A pairs that may relate to this question. The one you linked, and also this, though asked about bacteria. The basic question (why doesn't some group of organisms just take over everything everywhere) is very similar.
    $endgroup$
    – De Novo
    4 hours ago












  • $begingroup$
    Thank you! Helps the day before my bio test ;)
    $endgroup$
    – JavaScriptCoder
    3 hours ago














  • 1




    $begingroup$
    Good answer. I'd note that, not only are viruses often specific to a given species, they're often quite tissue specific. I think there are several Q/A pairs that may relate to this question. The one you linked, and also this, though asked about bacteria. The basic question (why doesn't some group of organisms just take over everything everywhere) is very similar.
    $endgroup$
    – De Novo
    4 hours ago












  • $begingroup$
    Thank you! Helps the day before my bio test ;)
    $endgroup$
    – JavaScriptCoder
    3 hours ago








1




1




$begingroup$
Good answer. I'd note that, not only are viruses often specific to a given species, they're often quite tissue specific. I think there are several Q/A pairs that may relate to this question. The one you linked, and also this, though asked about bacteria. The basic question (why doesn't some group of organisms just take over everything everywhere) is very similar.
$endgroup$
– De Novo
4 hours ago






$begingroup$
Good answer. I'd note that, not only are viruses often specific to a given species, they're often quite tissue specific. I think there are several Q/A pairs that may relate to this question. The one you linked, and also this, though asked about bacteria. The basic question (why doesn't some group of organisms just take over everything everywhere) is very similar.
$endgroup$
– De Novo
4 hours ago














$begingroup$
Thank you! Helps the day before my bio test ;)
$endgroup$
– JavaScriptCoder
3 hours ago




$begingroup$
Thank you! Helps the day before my bio test ;)
$endgroup$
– JavaScriptCoder
3 hours ago


















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