Annales de Limnologie - International Journal of Limnology

Annales de Limnologie - International Journal of Limnology publishes papers on the ecology of freshwater systems, ranging from studies of aquatic organisms, physical and chemical works which relate to the biological environment, to ecological applications and frameworks for water management directives.

Journal founded by University Paul Sabatier, Toulouse in 1964.

  • Acute Exposure to the Neonicotinoid Insecticide Imidacloprid of Zebrafish (Danio rerio) Gonads: A Histopathological Approach

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    Depending on the increase in agricultural production, the use of pesticides has also increased worldwide. Imidacloprid is a neonicotinoid pesticide and one of the most widely used in the world. In this study, it was aimed to investigate the histopathological changes in zebrafish ovary and testis tissue caused by imidacloprid, which pollutes the aquatic ecosystem in various ways. It has been shown that imidacloprid causes histopathological changes in the gonads by causing deterioration in the structure of reproductive cells.

    Ann. Limnol. - Int. J. Lim., 57 (2021) 23
    Published online: 21 October 2021
  • Effects of ethylene-bis-dithiocarbamate (Mancozeb) on zebrafish (Danio rerio) oocytes

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    Pesticides used to protect plants and animals against the competition of unwanted insects, diseases, and weeds, and pests play a delicate role in living systems. It has adverse effects on the environment and health. The most adverse effects of pesticide derivatives are the reduction in biodiversity, water pollution, and health risks. Mancozeb is an ethylene bis dithiocarbamate (EBDC) pesticide containing manganese and zinc. These pesticides are included in the fungicide group because they are used for treating fungal diseases. In this study, the structure of oocytes developing in female zebrafish exposed to different doses of mancozeb (5 mgL−1, 7.5 mgL−1) was examined. Compared with the control group, it was determined that the number of developing oocytes reduced in the experimental groups. There was a significant increase in atretic oocytes, an increase in the level of degenerate oocytes in a dose-dependent manner, and deformation in oocytes became prominent.

    Ann. Limnol. - Int. J. Lim., 57 (2021) 22
    Published online: 21 October 2021
  • Age, growth, and mortality of silver carp Hypophthalmichthys molitrix (Valenciennes, 1844) in the middle and lower reaches of the Pearl River, and implications for management and conservation

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    The main objective of this study was to determine the age, growth, mortality, and population structure of the silver carp Hypophthalmichthys molitrix (Valenciennes, 1844) in the middle and lower Pearl River. This work will benefit conservation of the species and to sustainably develop this valuable fishery.

    Ann. Limnol. - Int. J. Lim., 57 (2021) 21
    Published online: 21 October 2021
  • Phytoplankton dynamics in a seasonal stratified reservoir (Tillari), Western India

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    The present study deals with the phytoplankton dynamics, biomass and physicochemical features in freshwater reservoir, Tillari, western India. The reservoir experience seasonal stratification and mixing associated and changes in the biogeochemical aspects especially the phytoplankton community and chlorophyll a. Depth affected the behavior of the phytoplankton associations. Buildup in phytoplankton biomass was observed in the upper strata of the water column (epilimnion) during the monsoon period (June-July) and winter (December) as a result of nutrient enrichment from the hypolimnion. Among nutrients, nitrate was associated with buildup of Chl a during summer in the epilimnion (r2 = 0.7). A total of about 91 phytoplankton species were identified with major contribution by charophytes and chlorophytes. The dominant phytoplankton species belonged to genera Staurastrum, Cosmarium, Aulacoseira, Nephrocytium and Shroederia. Charophytes made a remarkable presence during the whole study period in the well oxygenated epilimnion as well as in the hypolimnion with relatively low oxygen. Diatom, the major silica sinking group was relatively less abundant. Keeping the importance of the reservoir in view, the understanding phytoplankton community from this poorly explored reservoir with respect to influencing factors is a very vital baseline information. Thus, to design and evaluate the management strategies for the reservoir, continuous monitoring and processes studies is warranted.

    Ann. Limnol. - Int. J. Lim., 57 (2021) 20
    Published online: 12 October 2021
  • Open Access

    Die hard in Lake Bourget! The case of Planktothrix rubescens reborn

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    Determining the factors responsible for cyanobacterial blooms is a key issue for scientists and lake stakeholders. This article provides a complete explanation for a recent bloom of Planktothrix rubescens that occurred in Lake Bourget (France) accompanied by a plausible scenario, likely to be used as a predictive tool in the future.

    Ann. Limnol. - Int. J. Lim., 57 (2021) 19
    Published online: 29 September 2021