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Author Topic:   Mental (instinctal) evolution
Saviourmachine
Member (Idle past 3582 days)
Posts: 113
From: Holland
Joined: 01-16-2004


Message 1 of 8 (151962)
10-22-2004 11:53 AM


Mental/instinctual evolution and natural selection
Mental/instinctual evolution and natural selection
Like Darwin already handled in his posthumous essay on instinct, it is interesting how biological evolution seems to result in latent mental and social behaviour in many species. Think of 1) migratory instincts, of 2) mother's instincts in many mammals, of 3) starting to breed when having a nest with a certain amount of eggs, and so on. This is a broad topic of course, but I would like to know - for a start - of these particular issues, what is known about the ratio between genetic hardwiring and social learning/adaptation.
Are there exemplars of species that were genetically disabled in regard to the mentioned instincts? What has a female mammal learned from her mum in regard to licking her kids, cutting the umbilical cord, eating the after-birth and so on? Can a bird count her eggs?
I'd like to see this thread as a place where persons deposit particular cases, 1) where the link between natural selection and mental/instinctual behaviour seems to be stretched, 2) that have someones particular interest, 3) that persons found very interesting evidence for coupling between natural selection and mental/instinctual behaviour (and was at first sight difficult to perceive).
This message has been edited by Saviourmachine, 10-22-2004 10:54 AM

Replies to this message:
 Message 3 by pink sasquatch, posted 10-22-2004 2:25 PM Saviourmachine has replied

  
AdminNosy
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Message 2 of 8 (152005)
10-22-2004 1:51 PM


Thread moved here from the Proposed New Topics forum.

  
pink sasquatch
Member (Idle past 6050 days)
Posts: 1567
Joined: 06-10-2004


Message 3 of 8 (152015)
10-22-2004 2:25 PM
Reply to: Message 1 by Saviourmachine
10-22-2004 11:53 AM


Re: Mental/instinctual evolution and natural selection
Saviourmachine,
There is strong evidence for the genetic basis of behavior, including maternal behavior. One example is the Peg3 knock-out mouse, which is deficient in such behaviors as pup-retrieval, nest building, and allowing suckling:
Science. 1999 Apr 9;284(5412):330-3.
Regulation of maternal behavior and offspring growth by paternally expressed Peg3.
Li L, Keverne EB, Aparicio SA, Ishino F, Barton SC, Surani MA.
Imprinted genes display parent-of-origin-dependent monoallelic expression that apparently regulates complex mammalian traits, including growth and behavior. The Peg3 gene is expressed in embryos and the adult brain from the paternal allele only. A mutation in the Peg3 gene resulted in growth retardation, as well as a striking impairment of maternal behavior that frequently resulted in death of the offspring. This result may be partly due to defective neuronal connectivity, as well as reduced oxytocin neurons in the hypothalamus, because mutant mothers were deficient in milk ejection. This study provides further insights on the evolution of epigenetic regulation of imprinted gene dosage in modulating mammalian growth and behavior.
However, there can be some degree of maternal behavior learning in laboratory mice. From my own experience, placing successful mothers in cages with mothers who have repeatedly abandoned or killed their litters results in the bad mothers becoming good mothers, even after the successful mother is removed...
Can a bird count her eggs?
Presumably some can: Some species of 'parasitic' birds lay their eggs in the nest of other species to co-opt maternal care. They routinely destroy the number of eggs they place in nest, otherwise the returning mother destroys them. (I'm no expert on this, but will try to do more research if you need more details).
In a way, the parasitic bird species may qualify as a species that once had maternal care, and lost it in favor of allowing another species to assume the cost of raising chicks...
I realize that the laboratory mice data is somewhat artificial, but are these the sort of ideas you are looking for?

This message is a reply to:
 Message 1 by Saviourmachine, posted 10-22-2004 11:53 AM Saviourmachine has replied

Replies to this message:
 Message 4 by Saviourmachine, posted 10-22-2004 3:33 PM pink sasquatch has replied

  
Saviourmachine
Member (Idle past 3582 days)
Posts: 113
From: Holland
Joined: 01-16-2004


Message 4 of 8 (152031)
10-22-2004 3:33 PM
Reply to: Message 3 by pink sasquatch
10-22-2004 2:25 PM


Caring mouse & counting birds
Peg3 in knock-out mouse
quote:
A mutation in the Peg3 gene resulted in growth retardation, as well as a striking impairment of maternal behavior that frequently resulted in death of the offspring. This result may be partly due to defective neuronal connectivity, as well as reduced oxytocin neurons in the hypothalamus
  —pink
Yes, that are interesting studies. I think it's very difficult to 'work with' impairments in this area. In general genetic information doesn't seem to be coupled 1-to-1 with traits, and far less with (latent) maternal behaviour. That a mutation in the Peg3 gene results in an impairment of maternal behaviour, doesn't necessarily have to mean that it codes for it, isn't it? Nice, that scientists did found something nevertheless.
Counting birds
And sure, if you know more about 'counting birds', I would like to know. This topic I started not to question 'biological evolution', but more to find unexpecting, marvellous ways in which such an amount of (behavioural) characteristics go from generation to generation. I wouldn't accuse you of using 'artificial' examples.
This message has been edited by Saviourmachine, 10-22-2004 02:37 PM

This message is a reply to:
 Message 3 by pink sasquatch, posted 10-22-2004 2:25 PM pink sasquatch has replied

Replies to this message:
 Message 5 by pink sasquatch, posted 10-22-2004 3:56 PM Saviourmachine has replied

  
pink sasquatch
Member (Idle past 6050 days)
Posts: 1567
Joined: 06-10-2004


Message 5 of 8 (152033)
10-22-2004 3:56 PM
Reply to: Message 4 by Saviourmachine
10-22-2004 3:33 PM


Re: Caring mouse & counting birds
Not sure why I didn't think of this before - but learned behavior transmitted from generation-to-generation is "culture", (though some would argue this is too simplistic a definition).
Most of the work regarding culture in animals has been done in primates - the classic example is of a Japanese macaque who learned that potatoes (introduced by researchers) tasted better washed and seasoned in the ocean, and then passed the knowledge through her colony, with the behavior spreading along preexisting social lines.
The most comprehensive chimp culture study:
Nature. 1999 Jun 17;399(6737):682-5.
Comment in:
Nature. 1999 Jun 17;399(6737):635-6.
Nature. 2001 Jan 4;409(6816):12.
Cultures in chimpanzees.
Whiten A, Goodall J, McGrew WC, Nishida T, Reynolds V, Sugiyama Y, Tutin CE, Wrangham RW, Boesch C.
Scottish Primate Research Group, School of Psychology, University of St Andrews, UK.
As an increasing number of field studies of chimpanzees (Pan troglodytes) have achieved long-term status across Africa, differences in the behavioural repertoires described have become apparent that suggest there is significant cultural variation. Here we present a systematic synthesis of this information from the seven most long-term studies, which together have accumulated 151 years of chimpanzee observation. This comprehensive analysis reveals patterns of variation that are far more extensive than have previously been documented for any animal species except humans. We find that 39 different behaviour patterns, including tool usage, grooming and courtship behaviours, are customary or habitual in some communities but are absent in others where ecological explanations have been discounted. Among mammalian and avian species, cultural variation has previously been identified only for single behaviour patterns, such as the local dialects of song-birds. The extensive, multiple variations now documented for chimpanzees are thus without parallel. Moreover, the combined repertoire of these behaviour patterns in each chimpanzee community is itself highly distinctive, a phenomenon characteristic of human cultures but previously unrecognised in non-human species.
On chimp tool use to crack nuts (you may find particularly interesting since it literally requires years of learning and practice with elders):
Anim Cogn. 2003 Dec;6(4):213-23. Epub 2003 Jul 29.
Cultural innovation and transmission of tool use in wild chimpanzees: evidence from field experiments.
Biro D, Inoue-Nakamura N, Tonooka R, Yamakoshi G, Sousa C, Matsuzawa T.
Primate Research Institute, Kyoto University, Japan. dora.biro@zoology.oxford.ac.uk
Chimpanzees (Pan troglodytes) are the most proficient and versatile users of tools in the wild. How such skills become integrated into the behavioural repertoire of wild chimpanzee communities is investigated here by drawing together evidence from three complementary approaches in a group of oil-palm nut- ( Elaeis guineensis) cracking chimpanzees at Bossou, Guinea. First, extensive surveys of communities adjacent to Bossou have shown that population-specific details of tool use, such as the selection of species of nuts as targets for cracking, cannot be explained purely on the basis of ecological differences. Second, a 16-year longitudinal record tracing the development of nut-cracking in individual chimpanzees has highlighted the importance of a critical period for learning (3-5 years of age), while the similar learning contexts experienced by siblings have been found to result in near-perfect (13 out of 14 dyads) inter-sibling correspondence in laterality. Third, novel data from field experiments involving the introduction of unfamiliar species of nuts to the Bossou group illuminates key aspects of both cultural innovation and transmission. We show that responses of individuals toward the novel items differ markedly with age, with juveniles being the most likely to explore. Furthermore, subjects are highly specific in their selection of conspecifics as models for observation, attending to the nut-cracking activities of individuals in the same age group or older, but not younger than themselves. Together with the phenomenon of inter-community migration, these results demonstrate a mechanism for the emergence of culture in wild chimpanzees.
On culture in orangs (once thought improbable due to their fairly solitary life-style):
Science. 2003 Jan 3;299(5603):102-5.
Comment in:
Science. 2003 Jan 3;299(5603):27-8.
Orangutan cultures and the evolution of material culture.
van Schaik CP, Ancrenaz M, Borgen G, Galdikas B, Knott CD, Singleton I, Suzuki A, Utami SS, Merrill M.
Department of Biological Anthropology and Anatomy, Duke University, Post Office Box 90383, Durham, NC 27708, USA. vschaik@duke.edu
Geographic variation in some aspects of chimpanzee behavior has been interpreted as evidence for culture. Here we document similar geographic variation in orangutan behaviors. Moreover, as expected under a cultural interpretation, we find a correlation between geographic distance and cultural difference, a correlation between the abundance of opportunities for social learning and the size of the local cultural repertoire, and no effect of habitat on the content of culture. Hence, great-ape cultures exist, and may have done so for at least 14 million years.
Are primates to close to humans for your interests?

This message is a reply to:
 Message 4 by Saviourmachine, posted 10-22-2004 3:33 PM Saviourmachine has replied

Replies to this message:
 Message 6 by Saviourmachine, posted 10-22-2004 4:55 PM pink sasquatch has replied

  
Saviourmachine
Member (Idle past 3582 days)
Posts: 113
From: Holland
Joined: 01-16-2004


Message 6 of 8 (152047)
10-22-2004 4:55 PM
Reply to: Message 5 by pink sasquatch
10-22-2004 3:56 PM


Cultural inheritence by chimps
Thank you Pink, interesting stuff too. I am glad we can tell each other what tastes good. Pass the salt, please. Although, I am more searching for links between behaviour and genes. It's that interesting for me, because it somewhat hardwires 'instinct', what is quite easy to accept as fact, but fascinating in regard to 'how' and 'what'.

This message is a reply to:
 Message 5 by pink sasquatch, posted 10-22-2004 3:56 PM pink sasquatch has replied

Replies to this message:
 Message 7 by pink sasquatch, posted 10-22-2004 5:17 PM Saviourmachine has replied

  
pink sasquatch
Member (Idle past 6050 days)
Posts: 1567
Joined: 06-10-2004


Message 7 of 8 (152055)
10-22-2004 5:17 PM
Reply to: Message 6 by Saviourmachine
10-22-2004 4:55 PM


try this...
I am more searching for links between behaviour and genes...
Rather than me throwing more examples at you, why don't you try...
Searching the http://www.pubmed.org database. I suggest you enter - QTL behavior - to start (QTL analysis is a way to map complex traits, if you were unaware). That particular search brought up genetic analysis of everything from foraging honeybees to depressed rats.
There's also a peer-reviewed journal dedicated to the subject, Behavior Genetics. You can access a bit of free content from their homepage even if you don't have access to a subscription.
Good luck, enjoy, and let me know if you want to discuss anything you find...

This message is a reply to:
 Message 6 by Saviourmachine, posted 10-22-2004 4:55 PM Saviourmachine has replied

Replies to this message:
 Message 8 by Saviourmachine, posted 10-22-2004 6:21 PM pink sasquatch has not replied

  
Saviourmachine
Member (Idle past 3582 days)
Posts: 113
From: Holland
Joined: 01-16-2004


Message 8 of 8 (152072)
10-22-2004 6:21 PM
Reply to: Message 7 by pink sasquatch
10-22-2004 5:17 PM


QTL Behaviour & Behaviour Genetics
Thank you for your keywords. That will easify searching a lot. If I have questions I'll return to here. If you guys don't know, nobody knows it on the web IMHO. Thanks.

This message is a reply to:
 Message 7 by pink sasquatch, posted 10-22-2004 5:17 PM pink sasquatch has not replied

  
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