C-banding and chromosome evolution in some related species of Australian chironominae

Lentzios, G.; Stocker, Ann Jacob; Martin, Jon

doi:10.1007/bf00122408

Cited by 5 publications

(4 citation statements)

References 45 publications

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“…The banding patterns and chromosomal rearrangements of the polytene chromosomes are relatively complex and expertise in detecting and deciphering these is required. In addition, the analyses are time consuming and can be carried out only on specimens in the late developmental stage (Lentzios et al 1980). In contrast, the molecular-based methods that we have developed are relatively rapid and simple, can be used at any life stage and provide the same level of Chironomus species characterisation.…”

Section: Discussionmentioning

confidence: 99%

Molecular identification of Chironomus spp. (Diptera) for biomonitoring of aquatic ecosystems

Sharley

Pettigrove

Parsons

2004

Australian Journal of Entomology

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Chironomidae larvae often represent a major component of the benthic fauna in inland water bodies and are used frequently as bioindicators of ecosystem health. The genus Chironomus is a recognised indicator of organic enrichment and has been used extensively in the northern hemisphere and New Zealand in ecotoxicological studies. However, similar use of Chironomus in Australia is limited due to the presence of cryptic species that restrict the collection of information on species-specific responses to environmental stress. To address the problems associated with species identification, we have used PCR-RFLP of the mitochondrial COI gene to develop DNA profiles for nine common Australian Chironomus species. Species-specific haplotypes were identified using reference taxa previously identified by cytological analysis, and verified with field specimens collected from seven wetlands around Melbourne. This research provides an effective tool for species identification of this ubiquitous and often abundant genus that will provide the basis of obtaining species-specific information to inform on the health of aquatic ecosystems.

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Section: Discussionmentioning

confidence: 99%

Molecular identification of Chironomus spp. (Diptera) for biomonitoring of aquatic ecosystems

Sharley

Pettigrove

Parsons

2004

Australian Journal of Entomology

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“…It has been reported by Bostock and Sumner (1978) that a combination of several factors including the amount of repetitive sequences, degree and type of repetition and compaction underlies the mechanism of C-banding. Despite this, studies with respect to the amount and patterns of C-band regions in several species of Chironomus have proved to be of great evolutionary importance (see Lentzios et al, 1980). Unlike Drosophila species, marking of centromeric position in polytene chromosomes of Chironomus in general is difficult because of the absence of an organised common chromocenter.…”

Section: C-bandingmentioning

confidence: 99%

Cytogenetic studies of Chironomus circumdatus from India (Diptera: Chironomidae)

Kumar

Gupta

1990

Genetica

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Chironomus circumdatus is one of the most common and wide-spread species in India. Cytogenetic studies pertaining to the mitotic and polytene chromosomes, nucleolar organizer regions, C-banding and naturally occurring chromosomal polymorphism have been carried out for the first time in this Indian species. Altogether seven inversions comprising six paracentric and one pericentric are detected in the Indian populations. The distribution of inversions in relation to different environmental conditions is discussed.

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“…Particularly pronounced is such a difference in the appearance of C-bands in closely related species having equal numbers of chromosomes and similar karyotype morphology (H/igele, 1977;King, 1980). Thus the distribution of heterochromatin, its amount in homologous sections of the chromosomes is of prime importance for the divergency of the species (H~igele, 1977;King, 1980;Lentzios et al, 1980;Ranganath & H/igele, 1982).…”

Section: Introductionmentioning

confidence: 99%

C-banding in the polytene chromosomes of species of the plumosus group (Diptera, Chironomidae) and their experimental hybrids

Michailova

1987

Genetica

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The localization and amount of heterochromatin in the plumosus group were studied, including the species Chironomus plumosus L., C. vancouveri and C. balatonicus. The appearance of C bands of Chironomus plumosus in several European populations is traced. The role of the C heterochromatkn in the differentiation of this species is discussed. From the evolutionary point of view the Swiss populations, in which large centromere heterochromatin blocks have been discovered, are more varied as to the amount of heterochromatin. The importance of duplications for this process is pointed out. The chromosomes of the individuals from C. vancouveri and C. balatonicus have centromeric, telomeric and interstitial heterochromatin. The centromeric heterochromatin is represented by thin C-bands. The particularities in the appearance of C heterochromatin in C. vancouveri and C. balatonicus reflect the structural peculiarities of their chromosomes. The change in the euchromatin regions in these forms is discussed in the light of transformation of euchromatin to heterochromatin in the process of evolution.The appearance of heterochromatin in hybrids (between populations and between species) created experimentally is traced. A change has been discovered in the appearance of heterochromatin in the hybrids compared to the initial parent forms. This difference is expressed more strongly in inter-species hybrids than in interpopulation hybrids of C. plumosus.

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C-banding and chromosome evolution in some related species of Australian chironominae

Cited by 5 publications

References 45 publications

Molecular identification of Chironomus spp. (Diptera) for biomonitoring of aquatic ecosystems

Molecular identification of Chironomus spp. (Diptera) for biomonitoring of aquatic ecosystems

Cytogenetic studies of Chironomus circumdatus from India (Diptera: Chironomidae)

C-banding in the polytene chromosomes of species of the plumosus group (Diptera, Chironomidae) and their experimental hybrids

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