français|english
Détail du projet : 2022_bassin-primates
- Titre du projet
- Solving the evolutionary puzzle of human childbirth
- Descriptif du projet
- This project addresses one of the most persistent puzzles in human evolution. Humans are unique among the great apes in experiencing a tight fit between the birth canal and neonatal head size (Rosenberg, 1992), occasionally leading to obstructed labour and foetal or maternal death. Until recently, the most likely explanation for our species’ obstetric difficulties was the ‘obstetrical dilemma’ hypothesis (Washburn, 1960), whereby the tight human birth canal evolved as a compromise between two opposing selective pressures: the need for a narrow, compact pelvis for efficient bipedal locomotion and the need for a spacious birth canal for delivering a particularly large-brained neonate. In the last decade, however, a series of empirical locomotion studies have challenged the assumption that a wider canal leads to less efficient locomotion, leaving open the question of what alternative selective pressure could be limiting the size of women’s pelvic canal. The objective of our study is to answer this question by testing the hypothesis that erect posture, and the resulting need of the pelvis to support abdominal organs and the pregnant uterus, could be constraining the size of the birth canal. Humans have evolved a unique combination of obligatory bipedal locomotion, fully erect posture and large-brained neonates, all factors that are likely to have affected the evolution of the pelvis, but other primates share some of these characteristics: some species have a largely orthograde posture (e.g., vertical clingers, brachiators), and some species give birth to large neonates. Humans are also not unique in experiencing a tight fit between the foetus and the birth canal. By taking a wide, comparative approach across primate species, we will be able to test whether orthograde posture, especially in combination with a relatively large foetus, can explain smaller birth canals and obstetric difficulties in humans and other primates.
Travaux réalisés par la plateforme Surfaçus
| Collection | No Inventaire | Descriptif | Vignette | Equipement |
|---|---|---|---|---|
| ZM | 1961-287 | bassin de Hylobates lar, m�le |
|
Faro Edge Arm |
| ZM | 1961-287 | crane de Hylobates lar, m�le |
|
Faro Edge Arm |
| ZM | 1961-287 | mandibule de Hylobates lar, m�le |
|
Faro Edge Arm |
| ZM | 1963-58 | bassin de Theropithecus gelada, M |
|
Faro Edge Arm |
| ZM | 1963-58 | bassin de Theropithecus gelada, M |
|
Faro Edge Arm |
| ZM | 1963-58 | sacrum de Theropithecus gelada, M |
|
Faro Edge Arm |
| ZM | 2004-405 | bassin de Perodicticus potto, M |
|
Faro Edge Arm |
| ZM | 2004-405 | bassin de Perodicticus potto, M |
|
Faro Edge Arm |
| ZM | 2004-405 | sacrum de Perodicticus potto, M |
|
Faro Edge Arm |
| ZM | 2021-2026 | pelvis de Lophocebus aterrimus (Cercoc�be noir) |
|
Faro Edge Arm |
| ZM | 2021-2026 | mandibule de Lophocebus aterrimus (Cercoc�be noir) |
|
Faro Edge Arm |
| ZM | 2021-2026 | sacrum de Lophocebus aterrimus (Cercoc�be noir) |
|
Faro Edge Arm |
| ZM | AC-1871-20 | pelvis de Trachypithecus obscurus (Semnopith�que obscur), femelle |
|
Faro Edge Arm |
| ZM | AC-1871-20 | sacrum de Trachypithecus obscurus (Semnopith�que obscur), femelle |
|
Faro Edge Arm |
| ZM | AC-1880-1026 | bassin et sacrum de Alouatta seniculus, M |
|
Faro Edge Arm |
| ZM | AC-1891-975 | pelvis et sacrum de Erythrocebus patas (singe rouge), femelle |
|
Faro Edge Arm |
| ZM | AC-1899-129 | bassin de Pan troglodytes, F |
|
Faro Edge Arm |
| ZM | AC-1899-129 | bassin de Pan troglodytes, F |
|
Faro Edge Arm |
| ZM | AC-1899-129 | sacrum de Pan troglodytes, F |
|
Faro Edge Arm |
| ZM | AC-1901-659 | bassin de Pan troglodytes, M |
|
Faro Edge Arm |
| ZM | AC-1901-659 | bassin de Pan troglodytes, M |
|
Faro Edge Arm |
| ZM | AC-1901-659 | sacrum de Pan troglodytes, M |
|
Faro Edge Arm |
| ZM | AC-1912-127 | pelvis et sacrum de Erythrocebus patas (singe rouge), femelle |
|
Faro Edge Arm |
| ZM | AC-1912-127 | crane de Erythrocebus patas (singe rouge), femelle. Calotte d�coup�e |
|
Faro Edge Arm |
| ZM | AC-1912-127 | mandibule de Erythrocebus patas (singe rouge), femelle |
|
Faro Edge Arm |
| ZM | AC-1916-67 | bassin et sacrum de Pongo, M |
|
Faro Edge Arm |
| ZM | AC-1928-25 | bassin de Gorilla |
|
Faro Edge Arm |
| ZM | AC-1928-25 | bassin de Gorilla |
|
Faro Edge Arm |
| ZM | AC-1928-25 | sacrum de Gorilla |
|
Faro Edge Arm |
| ZM | AC-1932-572 | crane de Papio hamadryas (babouin hamadryas), m�le |
|
Faro Edge Arm |
| ZM | AC-1932-572 | mandibule de Papio hamadryas (babouin hamadryas), m�le |
|
Faro Edge Arm |
| ZM | AC-1932-572 | pelvis et sacrum de Papio hamadryas (babouin hamadryas), m�le |
|
Faro Edge Arm |
| ZM | AC-1934-252 | pelvis et sacrum de Theropithecus gelada femelle |
|
Faro Edge Arm |
| ZM | AC-1934-616 | sacrum de Papio anubis, F |
|
Faro Edge Arm |
| ZM | AC-1940-712 | bassin de Papio leucophaeus, F |
|
Faro Edge Arm |
| ZM | AC-1940-712 | bassin de Papio leucophaeus, F |
|
Faro Edge Arm |
| ZM | AC-1940-712 | sacrum de Papio leucophaeus, F |
|
Faro Edge Arm |
| ZM | AC-1946-2 | bassin et sacrum de Cercopithecus nictitans, F |
|
Faro Edge Arm |
| ZM | AC-1952-99 | bassin et sacrum de Pongo pygmaeus, M |
|
Faro Edge Arm |
| ZM | AC-1956-152 | crane de Hylobates leucogenys, Nomascus leucogenys (gibbon � favoris blancs du Nord), femelle adulte |
|
Faro Edge Arm |
| ZM | AC-1956-152 | pelvis, sacrum et colonne vert�brale de Hylobates leucogenys, Nomascus leucogenys (gibbon � favoris blancs du Nord), femelle adulte |
|
Faro Edge Arm |
| ZM | AC-1962-299 | crane de Piliocolobus badius (colobe bai), femelle |
|
Faro Edge Arm |
| ZM | AC-1962-299 | mandibule de Piliocolobus badius (colobe bai), femelle |
|
Faro Edge Arm |
| ZM | AC-1962-299 | pelvis et sacrum de Piliocolobus badius (colobe bai), femelle |
|
Faro Edge Arm |
| ZM | AC-1962-335 | bassin et sacrum de Papio leucopaeus, F |
|
Faro Edge Arm |
| ZM | AC-1962-335 | bassin G de Papio leucopaeus, F |
|
Faro Edge Arm |
| ZM | AC-1963-78 | pelvis de Piliocolobus badius (colobe bai), femelle |
|
Faro Edge Arm |
| ZM | AC-1963-78 | sacrum de Piliocolobus badius (colobe bai), femelle |
|
Faro Edge Arm |
| ZM | AC-1965-241 | bassin de Pongo pygmaeus, F |
|
Faro Edge Arm |
| ZM | AC-1965-241 | bassin de Pongo pygmaeus, F |
|
Faro Edge Arm |
| ZM | AC-1965-241 | sacrum de Pongo pygmaeus, F |
|
Faro Edge Arm |
| ZM | AC-1966-311 | sacrum et 3 vert�bres lombaires de Cercocebus aethiops lunulatus, m�le, (mangabey couronn�) |
|
Faro Edge Arm |
| ZM | AC-1966-311 | pelvis de Cercocebus aethiops lunulatus, m�le, mangabey couronn� |
|
Faro Edge Arm |
| ZM | AC-1970-246 | bassin de Semnopithecus entellus, F |
|
Faro Edge Arm |
| ZM | AC-1970-246 | bassin de Semnopithecus entellus, F |
|
Faro Edge Arm |
| ZM | AC-1970-246 | sacrum de Semnopithecus entellus, F |
|
Faro Edge Arm |
| ZM | AC-1971-17 | bassin de Papio leucophaeus, M |
|
Faro Edge Arm |
| ZM | AC-1971-17 | sacrum de Papio leucophaeus, M |
|
Faro Edge Arm |
| ZM | AC-1978-109 | pelvis de Cercocebus aethiops, femelle adulte |
|
Faro Edge Arm |
| ZM | AC-1978-109 | sacrum de Cercocebus aethiops, femelle adulte |
|
Faro Edge Arm |
| ZM | AC-2007-1463 | bassin de Gorilla beringei, M |
|
Faro Edge Arm |
| ZM | AC-2007-1463 | bassin de Gorilla beringei, M |
|
Faro Edge Arm |
| ZM | AC-2007-1463 | sacrum de Gorilla beringei, M |
|
Faro Edge Arm |
| ZM | MO-1883-648 | bassin et sacrum de Daubentonia madagascariensis |
|
Faro Edge Arm |
| ZM | MO-1961-1018 | crane de Piliocolobus badius (colobe bai), femelle adulte |
|
Faro Edge Arm |
| ZM | MO-1961-1018 | pelvis, sacrum et colonne vert�brale, Piliocolobus badius (colobe bai), femelle adulte |
|
Faro Edge Arm |
| ZM | MO-1961-1018 | mandibule de Piliocolobus badius (colobe bai), femelle adulte |
|
Faro Edge Arm |
| ZM | MO-1962-1394 | pelvis de Piliocolobus badius temminckii (colobe bai), femelle adulte |
|
Faro Edge Arm |
| ZM | MO-1962-1394 | sacrum de Piliocolobus badius temminckii, femelle adulte |
|
Faro Edge Arm |
| ZM | MO-1963-299 | bassin de Cercopithecus nictitans, F |
|
Faro Edge Arm |
| ZM | MO-1963-299 | bassin de Cercopithecus nictitans, F |
|
Faro Edge Arm |
| ZM | MO-1963-299 | sacrum de Cercopithecus nictitans, F |
|
Faro Edge Arm |
| ZM | MO-1969-419 | pelvis, sacrum et colonne vert�brale de Cercopithecus aethiops aethiops, m�le adulte |
|
Faro Edge Arm |
| ZM | MO-1969-419 | crane de Cercopithecus aethiops aethiops, m�le adulte |
|
Faro Edge Arm |
| ZM | MO-1969-419 | mandibule de Cercopithecus aethiops aethiops, m�le adulte |
|
Faro Edge Arm |
| ZM | MO-1976-326 | pelvis et sacrum de Colobus guereza guereza (colobe gu�r�za), m�le adulte |
|
Faro Edge Arm |
| ZM | MO-1990-47 | bassin et sacrum de Cercopithecus nictitans, M |
|
Faro Edge Arm |
| ZM | MO-1992-4 | bassin de Daubentonia madagascariensis, M |
|
Faro Edge Arm |
| ZM | MO-1992-4 | bassin de Daubentonia madagascariensis, M |
|
Faro Edge Arm |
| ZM | MO-1992-4 | sacrum de Daubentonia madagascariensis, M |
|
Faro Edge Arm |
| ZM | MO-1995-1548 | bassin de Lophocebus albigena |
|
Faro Edge Arm |
| ZM | MO-1995-1548 | bassin de Lophocebus albigena |
|
Faro Edge Arm |
| ZM | MO-1995-1548 | sacrum de Lophocebus albigena |
|
Faro Edge Arm |
| ZM | MO-1996-2165 | pelvis de Erythrocebus patas (singe rouge), m�le adulte |
|
Faro Edge Arm |
| ZM | MO-1996-2165 | sacrum de Erythrocebus patas (singe rouge), m�le adulte |
|
Faro Edge Arm |
| ZM | MO-1996-2165 | mandibule de Erythrocebus patas (singe rouge), m�le adulte |
|
Faro Edge Arm |
| ZM | MO-2000-403 | bassin de Hylobates leucogenys, F |
|
Faro Edge Arm |
| ZM | MO-2000-403 | bassin de Hylobates leucogenys, F |
|
Faro Edge Arm |
| ZM | MO-2000-403 | sacrum de Hylobates leucogenys, F |
|
Faro Edge Arm |
| ZM | MO-2004-403 | bassin de Varecia variegata subcincta, F |
|
Faro Edge Arm |
| ZM | MO-2004-403 | bassin de Varecia variegata subcincta, F |
|
Faro Edge Arm |
| ZM | MO-2004-403 | sacrum de Varecia variegata subcincta, F |
|
Faro Edge Arm |