Thesis (Ph. D.)--Catholic University of America, 1944.
|Statement||by Sister Francis Solano Geisler.|
|Series||Catholic University of America Biological Studies -- no. 3, Biological studies (Catholic University of America) -- no. 3.|
|The Physical Object|
|Pagination||22 p. :|
|Number of Pages||22|
STUDIES ON THE POSTEMBRYONIC DEVELOPMENT OF HYALELLA AZTECA (SAUSSURE)1 SISTER FRANCIS SOLANO GEISLER, S. S. J. (Catholic University of America, Washington, D. C.) Hyalella azteca is a common and widely distributed fresh-water amphipod crus-tacean. The genus Hyalella is the only one of the family Talitridae occurring in the fresh waters of America. Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): ersitylibrary (external link)Author: Sister Francis Solano Geisler. African Studies American Studies Ancient Near East and Egypt Art History Asian Studies Book History and Cartography Biblical Studies Classical Studies Education History Jewish Studies Literature and Cultural Studies Languages and Linguistics DEVELOPMENT AND REPRODUCTION OF HYALELLA AZTECA (SAUSSURE, ) IN LABORATORY CULTURE Cited by: Therefore, we characterized energetic imbalances – i.e., variables related to food processing, growth, energy reserves, and reproduction – in a model shredder exposed to a mixture of five fungicides with different modes of toxic action at field relevant sum concentrations of 5 and 25 μg/ amphipod Hyalella azteca Saussure was selected as model species, which was motivated by its.
The acute toxicity of propranolol was assessed on the invertebrates Hyalella azteca, D. magna, and C. dubia, obtaining LC 50 values of , , and mg l −1, respectively, after a h exposure. Acute exposure to nadolol did not affect the survival of the invertebrates. This study utilized the freshwater amphipod (Hyalella azteca) for the indication of contamination risk levels of sediment-associated contaminants in the Erren (ER1∼ER10) and Sanye Rivers (SY1∼SY5) which were contaminated by metal scrap and smelting industries for ty identification evaluations involving the manipulation of pore water and whole-sediment samples were conducted. Bioconcentration factors (BCF) for regulatory purposes are usually determined by fish flow-through tests according to technical guidance document OECD Fish bioconcentration studies are time consuming, expensive, and use many laboratory animals. The aim of this study was to investigate whether the freshwater amphipod Hyalella azteca can be used as an alternative test . A gradient in H. azteca growth was created by reducing food ration. Tests were initiated with neonates (≤48 h old) and the effects of an altered food ration on survival and growth were examined after 10 and 49 days. Growth rates decreased significantly with reduced food ration (10 day growth rates ranged from µg d−1 in the highest feeding regime to µg d−1 in lowest feeding regime).
Studies on the postembryonic development of. Hyalella azteca (Saussure). Hyalella azteca is 1 of these key members, because it can be found in many lakes, ponds, and streams throughout Central. Dionne, K. Structure d'une communauté d'amphipodes Hyalella azteca et sa consommation des détritus organiques selon la saison dans la zone littorale d'un lac boréal. thesis, Université du Québec à Rimouski, Rimouski, Canada, [Google Scholar] Geisler, F.S. Studies on the postembryonic development of Hyalella azteca (Saussure. For example, Othman & Pascoe () studied development reproduction of Hyalella azteca in laboratory conditions and estimated the average time of precopula to be about days. Hyalella azteca. The aim of this study was to investigate whether the freshwater amphipod Hyalella azteca can be used as an alternative test organism for bioconcentration studies. Fourteen substances of different hydrophobicity (log K ow –) were tested under flow-through conditions to determine steady state and kinetic bioconcentration factors (BCF ss.