Evaluation of respiration parameters in a few generations and clones of Simocephalus vetulus (Crustacea, Cladocera) under controlled conditions
| Autor: | Forasacco Elena, Fontvieille Dominique |
|---|---|
| Přispěvatelé: | Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Dipartimento di Biologia, Università degli Studi di Milano [Milano] (UNIMI)-Sez. Zoologia Scienze Naturali |
| Rok vydání: | 2010 |
| Předmět: |
0106 biological sciences
biology Ecology [SDV]Life Sciences [q-bio] 010604 marine biology & hydrobiology Daphnia magna Branchiopoda OXYGEN CONTENT Aquatic animal SIMOCEPHALUS VELUTUS Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Crustacean Cladocera NADH CONTENT Respiration Littoral zone RESPIRATION PARAMETERS Respiration rate |
| Zdroj: | Hydrobiologia Hydrobiologia, Springer, 2010, 643 (1), pp.77-83. ⟨10.1007/s10750-010-0123-0⟩ 8. International Cladocera Symposium :Biology of Cladocera (Crustacea) 8. International Cladocera Symposium :Biology of Cladocera (Crustacea), Oct 2008, Aguascalientes, Mexico |
| ISSN: | 1573-5117 0018-8158 |
| DOI: | 10.1007/s10750-010-0123-0 |
| Popis: | International audience; Cladocera use their thoracic filter limbs, animated by rhythmic and persistent movements, for food collecting and gas exchanges. Several researches have been performed on Daphnia magna in natural environments and in laboratory to identify the adaptations developed toward a decrease or a lack in oxygen. However, no experiment was performed on cladocerans living exclusively in littoral areas, which need efficient adaptations to survive an always changing environment especially regarding oxygen concentration. These changes require from organisms that they spend additional energy in order to satisfy their need in oxygen. The present laboratory experiments were based on a typical inhabitant of littoral areas, Simocephalus vetulus, and on individuals which came directly from natural environments. Respiration rate and NADH fluorescence in filter limb muscles, as a marker of tissue oxygenation, were analysed on 20 families distributed over five generations, all acclimated and cultured under constant food supply conditions. The results underlined differences among generations especially due to body dimensions, and consequently to filter dimensions. As opposed to our former hypothesis, small and young individuals appeared to be more active and thus display a more efficient respiration than big and old Simocephalus. |
| Databáze: | OpenAIRE |
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