Austronesian woman (Roekiah Soeara, 1942, Indonesian actress - source).
Austronesian and Papuan peoples intermixed in coastal Papua-New Guinea and on
the islands to the east. This intermixture seems to have been mainly due to
Austronesian women joining polygynous Papuan households. Did this happen
through peaceful exchange (brides for land?) or through raiding and
kidnapping?
In all human populations, the sexes differ somewhat
in skin color, women looking paler and men browner and ruddier. This sex
difference is mirrored by a cross-cultural tendency to make lighter skin a
female norm, which women often accentuate by various means (e.g., staying out
of the sun, wearing sun-protective clothing, applying white facial powders or
skin-bleaching preparations). Traditionally, this norm was said to be ‘white’
in Europe and East Asia, ‘golden’ in South-East Asia, and ‘red’ in sub-Saharan
Africa (van den Berghe and Frost, 1986).
Why are women lighter-colored than men? Some
ethologists have argued that light skin is one of several infant traits that
the adult female body has adopted to calm aggressive impulses in men and induce
caring behavior. This visual stimulus would thus influence male sexual response
without being erogenous in and of itself. Whatever the ultimate cause,
traditional social environments have tended to make women’s lighter skin a
criterion of mate choice, often a leading one (Frost, 2011).
Evidently, skin color varies not only between men
and women but also between different human populations. What happens when
people become aware of the second kind of skin-color variation? Specifically, what
happens to the feelings associated with the first kind? How are they transposed
into this new social context?
One result may be a form of trade: women from
lighter-skinned populations will become objects of commerce for sale to men in
darker-skinned populations. This was the case between the 8th and 19th
centuries, when women were exported from Europe to the Muslim world, i.e.,
Spain, North Africa, the Middle East, and South Asia (see previous post).
Has this kind of trade developed elsewhere? To be
economically viable, it should meet certain conditions:
1. The two populations differ enough in skin color
to make the trade worthwhile.
2. There is enough supply, i.e., the women are
obtained for trade on a large enough scale through local wars or slave raiding.
3. There is enough demand, i.e., the male clients
are polygynous enough and wealthy enough.
These conditions came together with the rise of the
Muslim world to geopolitical dominance in the 8th century. Elsewhere, and at
other times, the conditions were less optimal. People usually had little
contact with other people whose skin color substantially differed from their
own. In pre-Columbian America, for instance, it’s difficult to see how such
trading could have developed, given the slight differences in skin color among
different Amerindian groups.
Nonetheless, there are a few intriguing examples,
albeit on a small scale:
Sub-Saharan
Africa
Skin color does visibly differ among the various
peoples of sub-Saharan Africa, to a greater degree in fact than what many
non-Africans might think. These differences seem to interact with notions of
sexual beauty, as Lugira (1970) writes about pre-colonial Uganda:
The Ganda concept of skin
pigmentation considers light coloured complexions to be differing shades of
white. A dark brown skin colour is said to be — eruyeru, that is, somewhat white. A really brown‑reddish‑yellow
person is said to be mweru = white,
which in comparison would be considered to be blonde; and this in the Ganda
aesthetic language is considered as red = myufu,
the most perfect skin pigmentation.
As a result, the lighter skin of some groups could
become a casus belli:
[…] The Nnyambo people were the
handsome looking (brown‑red) inhabitants of the south of Buganda, in the Ziba
countries and Kalagwe. The Nnyambo women were one of the reasons that
induced Suna II to wage war with Kiziba after which he suffered from small pox
and died (Lugira, 1970)
South-East Asia
An incipient trade of this sort existed in 19th- and
20th-century Thailand, where some Chinese merchants would offer their daughters
to Thai rulers in exchange for protection and influence:
'Chinese of wealth', wrote the
American missionary N. A. McDonald in 1884, 'often become favorites with the
rulers and receive titles of nobility, and these noblemen in return present
their daughters to Their Majesties.'
[…] William Skinner noted that
Chinese women were 'prized for their light skin color'. Here, skin colour was
valued as a form of feminine beauty and a sign of 'Chineseness'. (Jiemin, 2003)
This kind of exchange was consistent with indigenous
Thai notions of female beauty, as shown by a recent study:
Young women in all four regions
of Thailand considered ‘bright face skin’ and ‘white-pink (body) skin’ as the
next most important physical appearance characteristics. Women in the North
region were most concerned about having bright face skin, perhaps because they
already tend to have lighter body skin which is viewed as desirable. Women in
South region were most concerned with body skin color, which may be because
they tend to have darker skin color. (Rongmuang et al., 2011)
Papua New Guinea
/ Melanesia
Finally, lighter-skinned women may have been objects
of exchange in coastal Papua New Guinea and on the islands to the east (New
Britain, New Ireland, the Solomons, Fiji). This area was a zone of intermixture
between two streams of settlement: Papuans with dark brown if not black skin
and Austronesians with light brown skin. Interestingly, this intermixture
mainly took the form of Papuan men pairing with Austronesian women, as shown by
comparison of paternally-transmitted Y chromosomes and maternally-transmitted
mtDNA:
[…] This genetic admixture was
most likely male biased involving mostly Austronesian women and, over time,
mostly New Guinean men, resulting in a higher proportion of Melanesian than
Asian Y-chromosome together with a higher proportion of Asian than Melanesian
mtDNAs as observed in contemporary Polynesians (Mona et al. 2007; see also
Kayser et al. 2006)
[…] mtDNA and NRY analyses
indicate that this admixture was sex biased (Melton et al. 1995; Kayser et al.
2000; Su et al. 2000; Hurles et al. 2002): about 94% of Polynesian mtDNAs are
of Asian ancestry, whereas about 66% of Polynesian Y chromosomes are of Near
Oceania ancestry (Kayser et al. 2006). Although the mtDNA support for this
sex-biased admixture hypothesis has recently been questioned (Soares et al.
2011), genome-wide SNP data do indicate significantly more Asian versus New
Guinea ancestry for the X chromosome of Polynesians than for the autosomes
(Wollstein et al. 2010), in agreement with the sex-biased admixture scenario.
In addition, Papuan-speaking groups in New Guinea show higher frequencies of
Asian mtDNA haplogroups than of Asian NRY haplogroups (Kayser, Choi, et al.
2008).
[…] Overall, the mtDNA
haplogroups in the Solomons are predominantly of Asian [i.e., Austronesian]
origin, whereas the NRY haplogroups are predominantly of NO [Near Oceania,
i.e., Papuan] origin. (Delfin et al, 2012)
Since Papuans are much more polygynous than
Austronesians, and in the past more patrilocal, this intermixture was probably
due to Austronesian women traveling over some distance and joining polygynous
Papuan households.1 How and why is anyone’s guess. Peaceful
exchange? “Give us some of your land and we’ll give you some of our women?” Or
was it raiding and kidnapping?
In either case, the two groups were probably keenly
aware that one of them was lighter-skinned and the other darker-skinned. Even
today, after millennia of intermixture, color consciousness remains strong in
this contact zone, as noted by a study of the Eastern Solomons:
The Lau were conscious of skin
color; some parents, particularly mothers, tried to dissuade their sons from
marrying much better-educated girls from the Western Solomons because of their
dark skins. Although color consciousness is decreasing, until quite recently
clans and persons of higher status have been generally lighter, and marriages
have been preferentially within clan or class status levels. (Baldwin and
Damon, 1973)
According to an origin myth from New Britain, these
differences in skin color arose through the marriage choices of two brothers:
To-Kabinana said to To-Karvuvu,
“Do you get two light-coloured coco-nuts. One of them you must hide, then bring
the other to me.” To-Karvuvu, however, did not obey, but got one light and one
dark nut, and having hidden the latter, he brought the light-coloured one to
his brother, who tied it to the stern of his canoe, and seating himself in the
bow, paddled out to sea. He paid no attention to the noise that the nut made as
it struck against the sides of his canoe nor did he look around. Soon the
coco-nut turned into a handsome woman, who sat on the stern of the canoe and
steered, while To-Kabinana paddled. When he came back to land, his brother was
enamoured of the woman and wished to take her as his wife, but To-Kabinana
refused his request and said that they would now make another woman.
Accordingly, To-Karvuvu brought the other coco-nut, but when his brother saw
that it was dark-coloured, he upbraided To-Karvuvu and said: “You are indeed a
stupid fellow. You have brought misery upon our mortal race. From now on, we shall be divided into two
classes, into you and us.” Then they tied the coco-nut to the stern of the
canoe, and paddling away as before, the nut turned into a black-skinned woman;
but when they had returned to shore, To-Kabinana said: “Alas, you have only
ruined our mortal race. If all of us
were only light of skin, we should not die.
Now, however, this dark-skinned woman will produce one group, and the
light-skinned woman another, and the light-skinned men shall marry the
dark-skinned women, and the dark-skinned men shall marry the light-skinned
women.” And so, To-Kabinana divided mankind into two classes. (Gray, 1916, p.
108)
Conclusion
Light-skinned European women became objects of commerce
because of an unusual set of circumstances, essentially the relative dominance
of the Muslim world and, correspondingly, the relative weakness of the European
world.
Circumstances may come and go, but basic notions of
human beauty change less quickly. In the near future, a similar situation may
develop in response to the impoverishment of common people in Europe and North
America and the growing affluence of elites in the Third World, particularly in
resource-rich countries.
Note
1. The literature also puts forward the reverse
scenario as a possible explanation, i.e., Papuan men marrying into Austronesian communities. In this
second scenario, Papuan men would have had to renounce not only patrilocality
but also polygyny and low paternal investment. This is a more radical
behavioral change than the one associated with Austronesian women marrying into
Papuan communities. Elsewhere in the world, we have two other examples of a
high-polygyny population coming into contact with a low-polygyny one: Bantu and
Khoisans in southern Africa and Bantu and Pygmies in central Africa. In both
cases, intermixture has almost wholly involved women moving from the
low-polygyny population to the high-polygyny one. There has been little if any
movement of men in the other direction.
*****************************************************
The Spanish online journal La Tercera Cultura has recently translated and published one of my
posts: “Cómo se llegó a pacificar Europa.”
References
Baldwin, J.C. and A. Damon. (1973). Some genetic
traits in Solomon Island populations, American
Journal of Physical Anthropology, 39,
195-201.
Delfin, D., S. Myles, Y. Choi, D. Hughes, R. Illek,
M. van Oven, B. Pakendorf, M. Kayser, and M. Stoneking. (2012). Bridging Near
and Remote Oceania: mtDNA and NRY Variation in the Solomon Islands, Molecular Biology and Evolution, 29(2), 545–564.
http://mbe.oxfordjournals.org/content/29/2/545.short
Frost, P. (2011). Hue and luminosity of human skin:
a visual cue for gender recognition and other mental tasks, Human Ethology Bulletin, 26(2), 25-34. http://media.anthro.univie.ac.at/ISHE/index.php/bulletin/bulletin-contents
Frost, P. (2010). Femmes
claires, hommes foncés. Les racines oubliées du colorisme, Quebec
City : Presses Universitaires de Laval.
Gray, L.H. (1916). The Mythology of All Races, Vol.
9 Oceanic, Boston: Marshall Jones.
Jiemin, B. (2003). The Gendered Biopolitics of
Marriage and Immigration: A Study of Pre-1949 Chinese Immigrants in Thailand, Journal of Southeast Asian Studies, 34(1), 127-151.
http://www.jstor.org/discover/10.2307/20072478?uid=3737720&uid=2&uid=4&sid=21102467085371
Kayser M, S. Brauer, R. Cordaux R, et al. (2006).
Melanesian and Asian origins of Polynesians: mtDNA and Y chromosome gradients
across the Pacific, Molecular Biology and
Evolution, 23, 2234-2244.
http://mbe.oxfordjournals.org/content/23/11/2234.abstract
Lugira, A.M. (1970). Ganda Art, Kampala: Osasa pub.
Mona, S., M. Tommaseo-Ponzetta, S. Brauer, H.
Sudoyo, S. Marzuki, and M. Kayser. (2007). Patterns of Y-Chromosome Diversity
Intersect with the Trans-New Guinea Hypothesis, Molecular Biology and Evolution, 24 (11), 2546-2555.
http://mbe.oxfordjournals.org/content/24/11/2546.short
Rongmuang, D., B.J. McElmurry, L.L. McCreary, C.G.
Park, A. Miller, and C. Corte. (2011). Regional Differences in Physical
Appearance Identity among Young Adult Women in Thailand, Western Journal of Nursing Research, 33(1), 106-120.
http://dspace.lib.uic.edu/handle/10027/8345
Van den Berghe, P. L. and P. Frost. (1986). Skin color
preference, sexual dimorphism, and sexual selection: A case of gene-culture
co-evolution? Ethnic and Racial Studies, 9,
87-113.
"Some ethologists have argued that light skin is one of several infant traits that the adult female body has adopted to calm aggressive impulses in men and induce caring behavior."
ReplyDeleteThis suggests the possibility that it changes over the monthly cycle.
Papuan polygyny would leave some men without wives; they would not have land either (in a female farming system) so they would be disruptive. Papuan society could export the problem by encouraging unmarried males to move into areas inhabited by Austronesian communities to acquire their women and land.
ReplyDeleteWomen with infant traits, like light skin, are supposed to be particularly desirable. Yet these traits are said to be non-erogenous in adult females, to the extent that women apparently choose a tanned appearance as a way of improving their sexual attractiveness. So light skin is sexual, but at the same time it is not.
Infant traits in babies induce maternal feeling (mother love) which is not entirely dissimilar to romantic love. The mental pathway whereby infant traits induce a certain love (the motherly caring type) is already there.
Under selection for eliciting care, provisioning and monogamy infant traits could have been adapted to the telenomic function in adult women of inducing romantic love in men.
There are examples from history of polygynous non-European men buying European girls as sex slaves and then becoming entranced by them to the extent that the slaves were given unprecedented social position.
In the modern WEIRD environment where men are not expected be immediately serious, the romantic love inducing trait of light skin may get in the way of eliciting sufficient male approaches to give females a choice of suitors. Tanning becomes favoured by young women as a superficial cue to men immediately interested in a casual relationship.
Gigerenzer:"Paradoxically, in these situations a more noncompensatory environment may lead to examining cues in increasing order of validity [...] With sexual selection, it could often be that particular traits evolve as signals because of the stage of the assessment process in which they can be examined, rather than that the cue informativeness of preexisting signals has favored an order of inspection".
I think the light skin cue for romantic love and monogamy, having been initially suppressed, would become more important once a stable relationship was established. A prediction would be that women are far less interested in tanning, or even avoid it, in a serious relationship.
Women have lighter skin than men for one very obvious reason. Women are responsible for building the baby's bones in the womb. If the mother doesn't get enough Vitamin D through her skin and there's not enough in her diet, there isn't going to be a next generation. Thus women have had greater natural selection for lighter skin. Lighter skinned women were the ones who produced the healthiest offspring.
ReplyDeleteThat's not what Systematic review of first-trimester vitamin D normative levels and outcomes of pregnancy found. Moreover, a large scale association study of the genetic determinants of vitamin D insufficiency in Caucasians found no links to skin pigmentation, See here.
ReplyDeleteWomen have lighter skin than men for one very obvious reason. Women are responsible for building the baby's bones in the womb. If the mother doesn't get enough Vitamin D through her skin and there's not enough in her diet, there isn't going to be a next generation. Thus women have had greater natural selection for lighter skin. Lighter skinned women were the ones who produced the healthiest offspring.
ReplyDeleteOne query about this would be whether the same dimorphism is present in chimpanzees, who are mostly covered with hair.
Anon,
ReplyDeleteIt does. I'll discuss this point in my next post.
Sean,
I agree with part of what you say. Polygyny creates a surplus of young unmated males for whom the only way to get a woman is through raiding of other tribes. I'm skeptical, however, about the idea that these men simply moved into Austronesian communities. Such a move would entail a radical behavioral change, i.e., abandonment of polygyny and increased paternal investment.
The Japanese adopted the female tanning fad from the Western world but then dropped it about thirty years ago. I suspect it has more staying power here because (a) traditional notions of feminity are weaker and (b) many if not most young men and women are locked into a culture of sexual 'churning'.
Anon,
What if men were the fairer sex? Would you then be arguing that this makes sense because men need more vitamin D to build their denser bone structure?
Anon,
We see a similar pattern in other primates but it's displayed on the fur and not the skin, i.e., wherever there is a sexual dimorphism in fur color, the females have the lighter color. Moreover, this lighter color seems to mimic the natal coat of the infant.
Blaffer-Hrdy, S. and J. Hartung. 1979. The evolution of sexual dichromatism among primates, American Journal of Physical Anthropology 50:450.
The Japanese adopted the female tanning fad from the Western world but then dropped it about thirty years ago. I suspect it has more staying power here because (a) traditional notions of feminity are weaker and (b) many if not most young men and women are locked into a culture of sexual 'churning'.
ReplyDeleteJapan is also notable for pretty high drops in birthrates and sexual desire among the young.
Japan is notable for an extraordinarily small gap in life expectancy between men and women.
ReplyDeleteEast Asians in general show little sexual dimorphism. I think that is due to the men's lack of prenatal tesosteronisation. That could also explain a lack of interest in the culture of sexual adventure that is dominant in the West.
Do young Western women primarily want sexual adventures nowadays, or are they just in a culture where sex is expected and contraception means there is no longer fear of pregnancy as an excuse?
Central Asia seems the exception, with the exception of Kazakhstan, Y haplogroups of Asian origin are lower than non-Asian ones relative to the amount of proportionate ancestry.
ReplyDeleteEuropeans have impregnated women from cultures with polygyny more than their men have European women. This is easy to do if you have colonized the country and have shiploads of horny sailors who will take what they can get.
But wouldn't the Imperial Chinese soldiers or invading Mongols/Turks occupying central Asia leave a bigger mark?