Natural variation in the appendicular skeleton of Triturus carnifex (Amphibia: Salamandridae)

Journal of Morphology
N P ZaffaroniT Zavanella

Abstract

Intraspecific variation in the appendicular skeleton of two geographically isolated populations of Triturus carnifex, one from northern Italy (Rosate, Milano) and one from central Italy (Bagnaia, Perugia), has been studied. A total of 1,746 forelimbs and 830 hindlimbs were examined. Forelimb skeletal variability was much greater in the Rosate than the Bagnaia population. Skeletal variants were present in 36.3% and 13.5% of the forelimbs, respectively, or in 54.7% and 22.7% of the netws (P < 0.0001). There were no predominant skeletal variants in Bagnaia, while in the Rosate population, the majority of the variants consisted of fusion of radiale and prepollicis and of phalangeal formula 1-2-3-2. Hindlimb skeletal variability was similar in the two populations and appeared to be much lower than that of the forelimb, with highly significant differences in the frequency of basipodium variants within the Rosate population and in the frequency of acropodium variants in both populations. Skeletal variants were present in about 9% of the hindlimbs, or in about 12% of the newts from either population. At present, no conclusion can be drawn about the mechanisms, genetic and/or epigenetic, underlying the skeletal variability observed in t...Continue Reading

References

Apr 1, 1990·The Journal of Experimental Zoology·S K Sessions, S B Ruth
Feb 1, 1989·Ecotoxicology and Environmental Safety·E AriasT Zavanella
Jul 15, 1985·Experientia·P A Tsonis, G Eguchi
Jan 3, 1995·Proceedings of the National Academy of Sciences of the United States of America·B FavierP Dollé
Dec 1, 1993·Genes & Development·K M Small, S S Potter
Jan 1, 1994·Gerontology·E M Smirina
Jan 1, 1994·Gerontology·A K Hota
Jul 1, 1963·Journal of Morphology·D B WAKE
Jun 1, 1931·Wilhelm Roux' Archiv Für Entwicklungsmechanik Der Organismen·Salome Glücksohn
Sep 1, 1983·Evolution; International Journal of Organic Evolution·Pere Alberch
Jan 1, 1985·Evolution; International Journal of Organic Evolution·Pere Alberch, Emily A Gale
Oct 1, 1995·Evolution; International Journal of Organic Evolution·Neil ShubinAndrew J Crawford
Jun 1, 1992·Evolution; International Journal of Organic Evolution·M J Blanco, P Alberch
Sep 1, 1988·Evolution; International Journal of Organic Evolution·George F OsterPere Alberch
Aug 1, 1992·Journal of Morphology·Nicoletta Pacces ZaffaroniTeresa Zavanella

❮ Previous
Next ❯

Citations

Aug 18, 2010·Journal of Morphology·Laura Cabrera-TéllezMartha Patricia Ramírez-Pinilla

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.