First record of Paraphaenocladius exagitans longipes Sæther &amp; Wang 1995 (Diptera: Chironomidae: Orthocladiinae) from Brazil

This study describes the structure of the Chironomidae community associated with bryophytes in a first-order stream located in a biological reserve of the Atlantic Forest, during two seasons. Samples of bryophytes adhered to rocks along a 100-m stretch of the stream were removed with a metal blade, and 200-mL pots were filled with the samples. The numerical density (individuals per gram of dry weight), Shannon's diversity index, Pielou's evenness index, the dominance index (DI), and estimated richness were calculated for each collection period (dry and rainy). Linear regression analysis was employed to test the existence of a correlation between rainfall and the individual's density and richness. The high numerical density and richness of Chironomidae taxa observed are probably related to the peculiar conditions of the bryophyte habitat. The retention of larvae during periods of higher rainfall contributed to the high density and richness of Chironomidae larvae. The rarefaction analysis showed higher richness in the rainy season related to the greater retention of food particles. The data from this study show that bryophytes provide stable habitats for the colonization by and refuge of Chironomidae larvae, mainly under conductions of faster water flow and higher precipitation.

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Composition and Structure of the Chironomidae (Insecta: Diptera) Community Associated with Bryophytes in a First-Order Stream in the Atlantic Forest, Brazil

Rosa

Silva

Alves

2012

Neotrop Entomol

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Chironomus Newsletter on Chironomidae Research

Anderson

Ekrem²,

Langton³

2013

Chironomus

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First record of Paraphaenocladius exagitans longipes Sæther & Wang 1995 (Diptera: Chironomidae: Orthocladiinae) from Brazil

Abstract: Paraphaenocladius exagitans longipes Saether & Wang, 1995, was

Cited by 2 publications

References 2 publications

Composition and Structure of the Chironomidae (Insecta: Diptera) Community Associated with Bryophytes in a First-Order Stream in the Atlantic Forest, Brazil

Composition and Structure of the Chironomidae (Insecta: Diptera) Community Associated with Bryophytes in a First-Order Stream in the Atlantic Forest, Brazil

Chironomus Newsletter on Chironomidae Research

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