Are Fetuses Parasites? Requirements & Argument

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Discussion Overview

The discussion revolves around the classification of fetuses as parasites, exploring the biological and philosophical implications of such a categorization. Participants examine the requirements for parasitism and the nature of the relationship between a fetus and its mother, considering both physiological and genetic perspectives.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Some participants question the requirements for being classified as a parasite, noting that fetuses leech nutrients from their mothers.
  • Others argue that fetuses are not parasites, suggesting that the relationship is symbiotic in the long term.
  • A participant points out that true parasites typically aim to pass on their own genes, while a mother aims to pass on her genes through her offspring.
  • Another viewpoint suggests that if one considers the Selfish Gene theory, the relationship may not fit the definition of parasitism, as it emphasizes gene propagation over species boundaries.
  • One participant mentions that maternal malnutrition can lead to a poorly developed fetus, indicating a complex interaction rather than straightforward parasitism.
  • Humor is introduced in the form of jokes about teenagers, reflecting a lighter take on the topic.

Areas of Agreement / Disagreement

Participants express differing views on whether fetuses can be classified as parasites, with no consensus reached. Some support the notion of fetuses as parasites, while others firmly reject this classification, leading to an ongoing debate.

Contextual Notes

Participants reference various biological concepts and theories, but there are limitations in the discussion regarding definitions of parasitism and the implications of genetic kinship. The conversation remains exploratory without definitive conclusions.

Jooze
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What are the requirements to be a parasite? There is an argument suggesting that fetuses are considered parasites, since they leech nutrients from their host, in this case, their mother.

It feels like the obvious answer is that fetuses are not parasites, but I want to know why.

Thanks in advance.
 
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Jooze said:
What are the requirements to be a parasite? There is an argument suggesting that fetuses are considered parasites, since they leech nutrients from their host, in this case, their mother.

It feels like the obvious answer is that fetuses are not parasites, but I want to know why.

Thanks in advance.

Welcome to the PF. Could you provide links to articles that take one position or the other? That would help us to not duplicate stuff that you already have read. What is the context of your question?
 
abortion rhetoric aside, fetal physiology is fairly well studied. My text (http://www.elsevier.com/wps/find/bookdescription.cws_home/697456/description#description ) is at work, however IIRC the fetus takes Calcium from the mother; usually this presents no problem but loss of bone in the mother is a possibility:

http://www.endotext.org/pregnancy/pregnancy3/pregnancy3.htm

Maternal malnutrition results in a poorly developed fetus; the fetus does not cannibalize the mother.
 
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*waiting patiently for a joke about teenagers*
 
Math Is Hard said:
*waiting patiently for a joke about teenagers*

:smile:
 
It's definitely symbiotic in the long term in most cases.
 
Jooze said:
It feels like the obvious answer is that fetuses are not parasites, but I want to know why.

I think it is clear that fetuses are not parasites. This is not my field, so I can't be sure of the answer to the question, why. However, I suspect one reason relates to the issue of genetic reproduction. A true parasite is trying to pass on it's own genes and steals nutrients from a host, while a mother is trying to pass on its own genes. ... or, something like that, although I'm sure I'm not saying it correctly.
 
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*waiting patiently for a joke about teenagers*

:smile:


While fetii may be functionally parasitic, I expect true parasitism disqualifies genetic kin from the equation, including only other species.

Alternately, if you consider the Selfish Gene (that we are merely vehicles for our genes to get around in), parasitism does not apply, since the gene's goal is to propagate itself, meaning the relationahip definitely works in favour of the gene attempting to get itself replicated.
 
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Preliminary remarks:
1. Where is Jimmy Snyder? This thread is begging for one of his remarks.
2. If you have one, ask your pregnant wife whether fetuses are parasites. However, do watch out for flying objects and flying retorts when she blames you for ruining her body with your parasite.

Math Is Hard said:
*waiting patiently for a joke about teenagers*
Do jokes about 20-something parasites count?
 

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