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Toxicity evaluation of produced formation waters after filtration treatment

Natural Science 2010年第1期2卷 33-40页

作者： Loredana Manfra Chiara Maggi Jessica Bianchi Michela Mannozzi Olga Faraponova Livia Mariani Fulvio Onorati Andrea Tornambè Claudia Virno Lamberti Erika Magaletti 不详

During the last years many authors have char-acterized the produced formation waters (PFWs) with respect to chemical compounds and toxic-ity. Most of data are related to PFWs collected on offshore platform after treatment process. The available results showed that the particulate phase had an influence on PFW toxicity. As-suming the toxicity of PFWs treated on platform, the aim of this paper is to study the toxicity of these PFWs after a further filtration treatment carried out in laboratory. For this purpose PFWs were sampled from three natural gas platforms located in the Adriatic Sea (Italy) below treat-ment system. The eco-toxicological bioassays have been conducted on test-organisms be-longing to different trophic levels such as bac-teria, algae, crustaceans and fishes. The PFWs resulted toxic according to an overall assess-ment obtained through the bioassays. Further-more, it has been possible to identify the spe-cies that were more sensitive to the tested PFWs, namely Tigriopus fulvus, Dicentrarchus labrax and Vibrio fischeri. Besides, a chemical char-acterization was reported related to the con-taminants present in the PFWs to go with eco-toxicological assessment. Barium, zinc and manganese showed the most concentrations among the metals and the lower molecular weight components were common among the organic compounds. Some differences among PFWs were observed both for toxicity and chemical composition. The highest toxicity was recorded in PFWs (PFW1 and PFW2) containing the highest concentrations of some metals (Ba, Mn and Zn) and/or BTEX.

关键词： Adriatic Sea (Italy) Offshore Platforms Natural Gas Production Fields Produced Formation Waters Toxicity Assessment Bacterium (Vibrio Fischeri) Algae (Dunaliella Tertiolecta and Phaeodactylum Tricornutum) Crustaceans (Artemia franciscana and Tigriopus Fulvus) Fish (Dicentrarchus Labrax) Chemical Characterization

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The Effect of Live Food on the Coloration and Growth in Guppy Fish, <i>Poecilia reticulata</i>

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Agricultural Sciences 2018年第2期9卷 171-179页

作者： Elsah Arce Uribe Marco Polo Franco Archundia Jorge Luna-Figueroa Laboratorio de Acuicultura Departamento de Hidrobiología Centro de Investigaciones Biológicas Universidad Autónoma del Estado de Morelos Cuernavaca Morelos México Maestría en Manejo de Recursos Naturales Centro de Investigaciones Biológicas Universidad Autónoma del Estado de Morelos Cuernavaca Morelos México

Colour production in fish is due mostly to food. In conditions of captivity, the type of food is restricted, while various types of food are used in aquaculture, from processed dry food to small aquatic animals. In this study, we used nauplii of Artemia franciscana, “water fleas” Moina wierzejski, micro-worm Panagrellus redivivus, and commercial flakes. We used Poecilia reticulata, which is one of the most traded fish in ornamental aquaculture and hypothesise that if the live food influences the coloration and growth of P. reticulata, there must be differences in the intensity of colour pattern and growth rate in fish fed with different living animals. Consistent with our prediction, females and males of P. reticulata were more colourful when they were fed on A. franciscana, P. redivivus and M. wierzejski than when they were fed commercial flakes. Females and males of P. reticulata fed with A. franciscana grew in less time than fish fed with P. redivivus, M. wierzejski, or commercial flakes. We conclude that live food is an excellent way to affect growth and coloration in fish.

关键词： Coloration growth rate Artemia franciscana Moina wierzejski Panagrellus redivivus

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