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Annales de Limnologie - International Journal of Limnology

Volume 51 / No 4 (2015)


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Leptophlebiidae (Insecta: Ephemeroptera) from Gorgona Island National Natural Park (Tropical Eastern Pacific, Colombia) with the description of two new species p. 281

Six species of Leptophlebiidae are reported from Gorgona Island, including two new species, showing a geographic relation to the Chocoan-Caribbean and Andean mayfly faunas.

Published online: 08 December 2015
DOI: https://doi.org/10.1051/limn/2015026
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Zoogeography of the ostracod genus Nannocandona (Podocopa) with description of two new species from Europe and East Asia p. 297

Two new Nannocandona species are described, and the world records of N. faba Ekman, 1914 are reviewed. It is proposed that the name should be retained only for the original population. Map of distribution and key to all species of the genus are provided, along with the discussion on the parthenogenetic reproduction of the subterranean Candoninae.

Published online: 08 December 2015
DOI: https://doi.org/10.1051/limn/2015028
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Diversity and distribution of Cladocera (Crustacea: Branchiopoda) in the rock pools of Western Ghats, Maharashtra, India p. 315

Twenty-two species of Cladocera were observed on few rock pools of Western Ghats of Maharashtra, India. Chydoridae was the most species rich family. Genus Alona was rare but species like Leydigia ciliata were regularly found. Localities showed an overall faunal similarity. This is a first detailed study of Cladocera of rocky outcrops from India.

Published online: 17 December 2015
DOI: https://doi.org/10.1051/limn/2015029
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Description of Loricyphes froehlichi, a new genus and species of Leptohyphidae (Ephemeroptera) from São Paulo, Brazil p. 323

A new genus and species of Leptohyphidae, Loricyphes froehlichi, is described from nymph, subimago and egg. The nymphs present unique armature on body, including large tubercles in all tagma. It is superficially similar to Coryphorus (Coryphoridae), but it is probably related to Tricorythodes based on gill morphology.

Published online: 07 December 2015
DOI: https://doi.org/10.1051/limn/2015030
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Specific growth rate, colonial morphology and extracellular polysaccharides (EPS) content of Scenedesmus obliquus grown under different levels of light limitation p. 329

Relationships among cells per particle, EPS content and growth rate of Scenedesmus obliquus are investigated. Cells per particle increased from 1.2 to 2.8 when growth rate decreased from 0.65 to 0.40 day-1; but it fell back to 1.2 as growth rate decreased from 0.40 to 0.14 day-1. The increasing EPS content may not lead to colony formation of S. obliquus.

Published online: 11 January 2016
DOI: https://doi.org/10.1051/limn/2015033
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Study of the effects of photoperiod and salinity in the Alvarado strain of the Brachionus plicatilis species complex (Rotifera: Monogononta) p. 335

We assessed the effects of photoperiod and salinity using life table bioassays with the rotifer Brachionus ‘Alvarado’. Adding, hatching percentages and morphometry of the lorica. The 15 ‰ and photoperiod (16: 8 h) are the best conditions to rotifer cultivation. The dimensions of B. ‘Alvarado’ including into the SM-clade. Perhaps, our strain coexists in sympatry with other lineages in the same aquatic system.

Published online: 13 January 2016
DOI: https://doi.org/10.1051/limn/2015032
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Three-dimensional microdistribution of Chironomus balatonicus larvae (Chironomidae, Diptera) in soft sediments from the Vistula Lagoon (South Baltic Sea) p. 343

The paper focuses on a crucial and overlooked aspect of the ecology of chironomid larvae. Their more regularly distribution was associated with seasonally increased density, and a clustered one with decreased density. The maximum burrowing depth (up to 25 cm) positively correlated with total density, but also depended on the size of the larvae.

Published online: 15 January 2016
DOI: https://doi.org/10.1051/limn/2015034
Open Access

The response of river nitrification to changes in wastewater treatment (The case of the lower Seine River downstream from Paris) p. 351

This paper proves that nitrogen treatment of Paris wastewater since the improvements in WWTP has impacted nitrification in the Seine River. The observations and the modelling tools showed that more nitrifiers are discharged than before but do not develop due to lack in substrate leading in the disappearance of oxygen deficits linked to nitrification.

Published online: 25 January 2016
DOI: https://doi.org/10.1051/limn/2015031