Impact of pesticide Cypermethrin and fish kairomone on the life history traits of Daphnia pulex

Date

2007-07-13

Author

Akkaş, Sara Banu
Beklioğlu, Meryem

Metadata

Show full item record

Item Usage Stats

140
views

0
downloads

In freshwaters Daphnia, which help increasing water clarity due to its high grazing pressure and water filtration capacity, are fundamental for the conservation of aquatic biodiversity. In lake ecosystems, predation pressure and exposure to agricultural pesticides are among the most important factors affecting the Daphnia population. Therefore, the investigation of the adaptations of Daphnia under the combined influence of fish predation pressure and insecticides provides a new and more realistic ecological approach to the traditional toxicological approach because pesticides shown to disturb natural chemical communication significantly and thus pose an ecological risk. One of the commonly used pesticides in recent years in Turkey is the synthetic pyrethroid insecticide cypermethrin. The survival of the Daphnia pulex individuals exposed to cypermethrin levels between 0.01-5.00µg L-1 in the acute toxicity experiment indicated that these species might be more sensitive to cypermethrin in the presence of the fish kairomone, which was mimicked by fish kairomone. The chronic toxicity experiments, which were carried out at very low doses (ng L-1), suggested that there might be a trade-off between survival and reproduction, especially in the presence of fish predation pressure. These effects of cypermethrin in the presence and absence of fish predation pressure on Daphnia are discussed from an ecological perspective.

URI

https://hdl.handle.net/11511/87683

Conference Name

5th Symposium for European Freshwater Sciences (SEFS 5) (8 - 13 Temmuz 2007)

Collections

Other, Conference / Seminar

Suggestions

OpenMETU
Core

Impact of alternating wet and dry periods on long-term seasonal phosphorus and nitrogen budgets of two shallow Mediterranean lakes Coppens, Jan; ÖZEN, ARDA; Tavsanoglu, U. Nihan; Erdogan, Seyda; Levi, Eti E.; Yozgatlıgil, Ceylan; Jeppesen, Erik; Beklioğlu, Meryem (2016-09-01) The water balance, with large seasonal and annual water level fluctuations, has a critical influence on the nitrogen and phosphorus dynamics of shallow lakes in the semi-arid climate zone. We constructed seasonal water and nutrient budgets for two connected shallow lakes, Lakes Mogan and Eymir, located in Central Anatolia, Turkey. The study period covered 20 years with alternations between dry and wet years as well as restoration efforts including sewage effluent diversion and biomanipulations in Lake Eymir...
Assessment of Environmental Flows under Human Intervention and Climate Change Conditions in a Mediterranean Watershed Yılmaz, Mustafa Tuğrul; Alp, Emre; Sarıcan, Yeliz; Afsar, Mehdi; Bulut, Burak; Ersoy, Erhan Nuri; Karasu, İpek Gül; Önen, Alper (null; 2017-12-15) Allocation of the river flow for ecosystems is very critical for sustainable management of ecosystems containing aquatic habitats in need of more water than other environments. Availability and allocation of water over such locations becomes more stressed as a result of the influence of human interventions (e.g., increased water use for irrigation) and the expected change in climate. This study investigates the current and future (until 2100) low-flow requirements over 10 subcatchments in a Mediterranean Wa...
Variation in growth, reproduction, and resource allocation in an aquatic plant,Vallisneria spinulosa: the influence of amplitude and frequency of water level fluctuations Li, Lei; Ding, Mingming; Jeppesen, Erik (Springer Science and Business Media LLC, 2020-09-01) Water level fluctuations (WLF), one of the most affected ecological drivers by climate change, are dominant forces controlling submerged macrophyte performance and distribution in freshwater ecosystems. Submerged macrophytes are prominent components of shallow lakes, predicting their response to WLF is therefore crucial for the management and conservation of these valuable and vulnerable ecosystems. We conducted an experiment in 15 outdoor mesocosms to explore the influence of WLF on the performance ofValli...
Impact of water level fluctuations and fish on macroinvertebrate community and periphyton growth in shallow lakes - a mesocosm approach Saraoğlu, Ece; Beklioğlu, Meryem; Department of Biology (2012) A mesocosm experiment was conducted in Lake Eymir between June – September 2009 in order to elucidate the effects of water level changes and fish predation on periphyton growth and macroinvertebrates in semi-arid shallow lakes. Twenty four cylindrical enclosures, each with 1.2 m diameter, open to lake bottom and atmosphere, were placed at three different depths, i.e. 0.8 m (low water level, LW), 1.6 m (high water level, HW) and 2.3 m (however, data regarding the enclosures at 2.3 m were excluded in this stu...
Influence of Farming Intensity and Climate on Lowland Stream Nitrogen Goyenola, Guillermo; Graeber, Daniel; Meerhof, Mariana; Jeppesen, Erik; Teixeira-de Mello, Franco; Vidal, Nicolás; Fosalba, Claudia; Ovesen, Niels Bering; Gelbrecht, Joerg; Mazzeo, Néstor; Kronvang, Brian (MDPI AG, 2020-4-2) Nitrogen lost from agriculture has altered the geochemistry of the biosphere, with pronounced impacts on aquatic ecosystems. We aim to elucidate the patterns and driving factors behind the N fluxes in lowland stream ecosystems differing about land-use and climatic-hydrological conditions. The climate-hydrology areas represented humid cold temperate/stable discharge conditions, and humid subtropical climate/flashy conditions. Three complementary monitoring sampling characteristics were selected, including a ...

Citation Formats

S. B. Akkaş and M. Beklioğlu, “Impact of pesticide Cypermethrin and fish kairomone on the life history traits of Daphnia pulex,” presented at the 5th Symposium for European Freshwater Sciences (SEFS 5) (8 - 13 Temmuz 2007), 2007, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87683.