+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Zur evolution basicranialar Gelenke bei Vogeln, insbesondere bei Huhner- und Entenvogeln (Galloanseres)

, : Zur evolution basicranialar Gelenke bei Vogeln, insbesondere bei Huhner- und Entenvogeln (Galloanseres). Zeitschrift fuer Zoologische Systematik und Evolutionsforschung. Dezember; 314: 300-317

Basicranial articulations are among the most neglected structures of the avian feeding apparatus. Based on the presented ontogenetic evidence two nonhomologous types of basicranial articulations are distinguished in birds: 1. A basipterygoid articulation developing from an early embryonic quadratopolar comissure, which is homologous to the basipterygoid articulation of other amniotes. This diarthrosis is present in all paleognathous as well as in many juvenile and some adult neognathous birds. 2. A rostropterygoid articulation developing through apposition of the pterygoid on the parasphenoid. This secondary articulation is known from galliform and anseriform birds (Galloanseres). Based on ontogenetic evidence as well as functional analysis following hypothesis explaining the evolution of rostropterygoid articulation in the Galloanseres is proposed: 1. In the groundplan of birds (Aves, sensu GAUTHER 1986) a basipterygoid articulation was present continuously during ontogeny. It protected the pterygoid-quadrate articulation against propalineal distortion by controlling the movement of the caudal end of the flexible, but undivided pterygopalatinal bar. This construction is preserved in recent paleognaths. 2. In the groundplan of the Neognathae an intrapterygoid joint subdividing the pterygopalatinal bar was formed in juveniles. Consequently the basipterygoid articulation had lost its function in adults and was therefore developed only in embryonic and juvenile stages. This condition is present in many recent neognaths. 3. In the stemline of the Galloanseres the intrapterygoid joint was already formed in embryos. Since an undivided pterygopalatinal bar is absent in any ontogenetic stage of the Galloanseres, no basipterygoid articulation is being formed. The recent Galloanseres retain this developmental pattern. 4. In the groundplan of the Gallooanseres a newly developed rostropterygoid articulation was present providing a support for the pterygopalatinal bar.


Other references

Samsonova, I.; Bottcher, F., 1972: Studies on plastome mutability. II. Back mutation of the plastome mutant Pl-alb 1 in tomato. Soviet genetics: transl y 1974, 8 (7) 819-825

L.M.nor L.; Popoff M.Y.; Laurent B.; Hermant D., 1986: Description of a seventh salmonella subspecies salmonella choleraesuis ssp indica new subspecies. A new Salmonella subspecies designated as S. choleraesuis subsp. indica (shortly, subspecies VI) was delineated on the basis of biochemical characters and genomic relatedness. Eight serovars were assigned to this subspecies: one of these was previ...

Karchmer, S.; Shor Pinsker, V.; Guevara Rubio, G., 1973: Acute fetal distress and uterus-inhibiting drugs. Ginecologia Y Obstetricia de Mexico 33(195): 43-66

Anonymous, 1958: CASE RECORDS of the Massachusetts General Hospital; case 44401. New England Journal of Medicine 259(14): 688-694

Truniger, B., 1982: Prophylaxis and treatment of pneumonia. Schweizerische Rundschau für Medizin Praxis 71(15): 641-644

Squire, F.A., 1954: Observations on the Incidence of Trypanosomes in Glossina palpalis (R.-D.) in Sierra Leone. The following is the author's summary. Observations were made in Sierra Leone from September 1949 to November 1951 on the incidence of trypanosomes in Glossina palpalis (R.

Ohta, Y.; Ohkubo, H.; Hatori, K.; Shinomiya, M., 1986: Correlation between liver biopsy and liver function tests in the diagnosis of liver cirrhosis. Rinsho Byori. Japanese Journal of Clinical Pathology 34 Spec No 67: 154-161

Annels, N.; Callan, M.; Rickinson, A.B., 1997: Visualisation of Epstein Barr Virus epitope-specific cytotoxic T lymphocytes in the blood of infectious mononucleosis patients. Immunology 92(SUPPL 1): 24, Dec

Vyas, V.K.; Goel, A.; Ghate, M.; Patel, P., 2015: Ligand and structure-based approaches for the identification of SIRT1 activators. SIRT1 is a NAD(+)-dependent deacetylase that involved in various important metabolic pathways. Combined ligand and structure-based approach was utilized for identification of SIRT1 activators. Pharmacophore models were developed using DISCOtech an...

Narita, S.; Uchiyama, S.; Takemi, K., 1998: The interference and cross sensitivity for an UV ozone monitor. The interference effect of co-existing gases other than ozone is examined when ozone is measured by means of an UV ozone monitor. Interference of non-measured organic chemical compounds can be estimated depending upon the quantities of physical fu...