Introduction

Cranston, Ross

doi:10.1007/978-1-349-03849-7_1

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…This species displayed high chromate resistance (18.0 mM Cr(VI)) although it was isolated on LB agar plate and from an environment that was not polluted with toxic chromate (Halpern et al, 2009a). Chironomids are considered pollution tolerant (Winner et al, 1980;Cranston, 1995;Thorne and Williams, 1997;Richardson and Kiffney, 2000). It has been shown that chironomids are able to acclimate and adapt to metals in their environment (Miller and Hendricks, 1996;Groenendijk et al, 2002).…”

Section: The Role Of Endogenous Bacteria In Chironomids Y Senderovichmentioning

confidence: 99%

The protective role of endogenous bacterial communities in chironomid egg masses and larvae

Senderovich

Halpern

2013

The ISME Journal

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Insects of the family Chironomidae, also known as chironomids, are distributed worldwide in a variety of water habitats. These insects display a wide range of tolerance toward metals and organic pollutions. Bacterial species known for their ability to degrade toxicants were identified from chironomid egg masses, leading to the hypothesis that bacteria may contribute to the survival of chironomids in polluted environments. To gain a better understanding of the bacterial communities that inhabit chironomids, the endogenous bacteria of egg masses and larvae were studied by 454-pyrosequencing. The microbial community of the egg masses was distinct from that of the larval stage, most likely due to the presence of one dominant bacterial Firmicutes taxon, which consisted of 28% of the total sequence reads from the larvae. This taxon may be an insect symbiont. The bacterial communities of both the egg masses and the larvae were found to include operational taxonomic units, which were closely related to species known as toxicant degraders. Furthermore, various bacterial species with the ability to detoxify metals were isolated from egg masses and larvae. Koch-like postulates were applied to demonstrate that chironomid endogenous bacterial species protect the insect from toxic heavy metals. We conclude that chironomids, which are considered pollution tolerant, are inhabited by stable endogenous bacterial communities that have a role in protecting their hosts from toxicants. This phenomenon, in which bacteria enable the continued existence of their host in hostile environments, may not be restricted only to chironomids.

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Section: The Role Of Endogenous Bacteria In Chironomids Y Senderovichmentioning

confidence: 99%

The protective role of endogenous bacterial communities in chironomid egg masses and larvae

Senderovich

Halpern

2013

The ISME Journal

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“…Chironomids are known from every continent, being distributed from tropical rain forests to high arctic and alpine tundra. Only three species occur on the Antarctic mainland, although a few others are known from the Antarctic islands (Cranston, 1995).…”

Section: Chironomidae ("Non-biting Midges ")mentioning

confidence: 99%

Midges: Chironomidae and Related Diptera

Walker

2001

Developments in Paleoenvironmental Research

267

108

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“…Chironomidae is considered a species-rich family of flies, with almost 15000 species described worldwide [1]. Generally, Chironomidae larvae are inhabitants of organically enriched places such as in flowing water of streams and rivers or standing water of lakes and pools as well as temporary rain-pools.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study of Phylogenetic Relationship of Rice Field Chironomidae (Diptera) Inferred From DNA Sequences of Mitochondrial Cytochrome Oxidase Subunit I

Al‐Shami¹,

Aziza²,

Rawi³

et al. 2009

American J. of Applied Sciences

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Problem statement: Chironomidae have been recorded in rice fields throughout the world including in many countries such as India, Australia and the USA. Although some studies provide the key to genera level and note the difficulty of identifying the larvae to species level. Chironomid researches have been hindered because of difficulties in specimen preparation, identification, morphology and literature. Systematics, phylogenetics and taxonomic studies of insects developed quickly with emergence of molecular techniques. These techniques provide an effective tool toward more accurate identification of ambiguous chironomid species. Approach: Samples of chironomids larvae were collected from rice plots at Bukit Merah Agricultural Experimental Station (BMAES), Penang, Malaysia. A 710 bp fragment of mitochondrial gene Cytochrome Oxidase subunit I (COI) was amplified and sequenced. Results: Five species of Chironomidae; three species of subfamily Chironominae, Chironomus kiiensis, Polypedilum trigonus, Tanytarsus formosanus, two species of subfamily Tanypodinae, Clinotanypus sp and Tanypus punctipennis were morphologically identified. The phylogenetic relationship among these species was been investigated. High sequence divergence was observed between two individuals of the presumed C. kiiensis and it is suggested that more than one species may be present. However the intraspecific sequence divergence was lower between the other species of Tanypodinae subfamily. Interestingly, Tanytarsus formosanus showed close phylogenetic relationship to Tanypodinae species and this presumably reflect co-evolutionary traits of different subfamilies. Conclusion: The sequence of the mtDNA cytochrome oxidase subunit I gene has proven useful to investigate the phylogenetic relationship among the ambiguous species of chironomids.

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Introduction

Cited by 4 publications

References 2 publications

The protective role of endogenous bacterial communities in chironomid egg masses and larvae

The protective role of endogenous bacterial communities in chironomid egg masses and larvae

Midges: Chironomidae and Related Diptera

Preliminary Study of Phylogenetic Relationship of Rice Field Chironomidae (Diptera) Inferred From DNA Sequences of Mitochondrial Cytochrome Oxidase Subunit I

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