EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Effect of environmental pollution on the chromosomal variability of Chironomus riparius Meigen 1804 (Diptera, Chironomidae) larvae from two Piedmont stations



Effect of environmental pollution on the chromosomal variability of Chironomus riparius Meigen 1804 (Diptera, Chironomidae) larvae from two Piedmont stations



Genetica 108(2): 171-180



Different frequencies of chromosomal alterations in salivary gland polytene chromosomes AB, CD and EF were described in larvae of Chironomus riparius (syn. Chironomus thummi) from the trace metal-polluted station of Santena on the river Banna, near Turin, and from the unpolluted station of Corio (40 Km from Turin) which was taken as a reference area. In a sample of 56 larvae from Santena, no specimen with the standard karyotype in all cells of the salivary glands was found. Different types of aberrations were found: 33 paracentric and five pericentric inversions, three deficiencies, four amplified sections and one chromatid break. Fifteen out of the 38 inversions and two amplified sections appeared to be inherited, while all the other aberrations were somatic. Most of the aberrations' breakpoints were located on both sides of the centromere regions, where constitutive heterochromatin is present. Also functional alterations were observed (mainly telomere and centromere decondensations and nine novel puffs). In a sample of 49 larvae of a population from the well-preserved area of Corio only six somatic and one inherited paracentric inversions were found. These results suggest that the strong destabilization of the genomes of C. riparius larvae from Santena could be a reaction to the activity of the toxic substances present in the polluted sediments of the river Banna.

(PDF emailed within 0-6 h: $19.90)

Accession: 003727792

Download citation: RISBibTeXText

DOI: 10.1023/A:1004172019131



Related references

Effect of environmental pollution on the chromosomal variability of Chironomus riparius Meigen 1804 (Diptera, Chironomidae) larvae from two Piedmont stations. Genetica 108(2): 171-180, 2001

Assessment of the environmental stress in different Galician freshwater ecosystems by means of the study of Chironomus riparius Meigen, 1804 larval deformities Diptera, Chironomidae Evaluacion del nivel de estres ambiental en diversos ecosistemas acuaticos de Galicia, mediante el estudio de deformidades en larvas de Chironomus riparius Meigen, 1804 Diptera, Chironomidae. NACC Bioloxia. 1997( ); 8: 271-280, 1998

About the possible repercussions of the presence of deformities on the life cycle of Chironomus riparius Meigen, 1804 Diptera, Chironomidae Sobre la posible repercusion de la presencia de deformidades en el ciclo vital de Chironomus riparius Meigen, 1804 Diptera, Chironomidae. Boletin de la Asociacion Espanola de Entomologia. junio; 231-2: 105-113, 1999

Some ontogenetic aspects of larval deformities of Chironomus riparius Meigen, 1804 Diptera, Chironomidae Algunos aspectos de la ontogenia de las deformidades larvarias de Chironomus riparius Meigen, 1804 Diptera, Chironomidae. Limnetica, 17: 65-69, 1999

Incidence and causes of deformities in recently hatched larvae of Chironomus riparius Meigen, 1804 (Diptera, Chironomidae). Archiv fur Hydrobiologie 149(3): 387-401, 2000

Seasonal and interannual variations in the frequency and severity of deformities in larvae of Chironomus riparius (Meigen, 1804) and Prodiamesa olivacea (Meigen, 1818) (Diptera, Chironomidae) collected in a polluted site. Environmental Monitoring and Assessment 64(3): 617-626, 2000

Inherited and somatic cytogenetic variability in Palearctic populations of Chironomus riparius Meigen 1804 (Diptera, Chironomidae). Genome 47(2): 332-344, 2004

Monitoring deformities of Chironomus riparius Meigen, 1804 (Diptera, Chironomidae) larvae from first to fourth instar: a potential tool for investigating their origin. Archiv fur Hydrobiologie 154(3): 447-460, 2002

About the possible repercussions of the presence of deformities on the life cycle of Chironomus riparius Meigen, 1804 (Diptera, Chironomidae). Boletin de la Asociacion Espanola de Entomologia 23(1-2): 105-113, 1999

Ontogeny of individual asymmetries in several traits of larval Chironomus riparius Meigen, 1804 (Diptera, Chironomidae). Canadian Journal of Zoology 80(8): 1470-1479, 2002

Genotoxic effects of chromium on polytene chromosomes of Chironomus riparius Meigen 1804 (Diptera, Chironomidae). Caryologia 54(1): 59-71, 2001

Mercury accumulation and its teratogenic effect on larvae of Chironomus riparius Meigen (Diptera: Chironomidae). 2006

Cytogenetic characteristics of a population of Chironomus riparius Meigen 1804 (Diptera, Chironomidae) from a polluted Po river station. Genetica (Dordrecht). October; 982: 161-178, 1996

The effect of mercury chloride on morphofunctional parameters in Chironomus riparius Meigen Diptera, Chironomidae larvae. Inland Water Biology 2(1): 89-95, 2009

Sobre la posible repercusion de la presencia de deformidades en el ciclo vital de Chironomus riparius Meigen, 1804 (Diptera, Chironomidae). 1999