This study describes the life history characteristics of amictic, unfertilized mictic and fertilized mictic females of the rotifer Brachionus calyciflorus cultured individually on two different algae at 0.1 mg ml −1 food concentration and 27 °C. Toxicants Copper, Sodium pentachlorophenol, 3,4-dichloroaniline, lindane. license cc-by-nc copyright They are pseudocoelomates and possess a gut with an anus. Rotíferos como o Brachionus calyciflorus são animais de teste preferidos em toxicologia aquática por causa de sua sensibilidade à maioria dos tóxicos. General Characteristics: Brachionus is a pair-shaped rotifera. We isolated Brachionus plicatilis and Brachionus calyciflorus from Salado River basin waterbodies and studied the demographic characteristics and competition between them at three salinity levels (0.75, 1.75 and 2.75 g L –1 NaCl) and at two food concentrations (0.1 × 10 6 and 0.5 × 10 6 cells mL –1 Chlorella vulgaris). Brachionus calyciflorus Growth Characteristics 145 Effects ofpH on rotifer population growth characteristics: Triplicate eul't~&~ at five p~'levels; 5.0, 6.0, 7.0, 8.0, 9.0 and a control were used for the popuIatisn growth experiments. Annales de Limnologie - International Journal of Limnology, An international journal of basic and applied freshwater research Such studies can Key Words: Brachionus calyciflorus; Ingestion rate; Supplemental aeration INTRODUCTION In current fish culture practices larviculture is one of the main bottlenecks in the promotion of the production of fish and crustaceans. Several characteristics of rotifers including their very small size, relatively slow motility have contributed … The rotifer Brachionus calyciflorus often occurs simultaneously with the cladoceran Moina macrocopa in tropical water bodies. Abstract The life history characteristics of rotifers usually vary at different temperatures, depending on their species or strains. gal characteristics such as the biochemical make-up of cells and those that affect ingestion and digestion. Maternal age and spine development in the rotifer Brachionus calyciflorus: increase of spine length with birth orders 1. Brachionus calyciflorus Pallas, 1766: UKSI Synonym Source; Brachionis calyciflorus Pallas, 1766 synonym: UKSI Classification unranked Biota kingdom Animalia phylum Rotifera class Eurotatoria order Ploima family Brachionidae genus Brachionus species Brachionus calyciflorus. Three strains of Brachionus calyciflorus Pallas (Qingdao, Wuhu, and Guangzhou strains), were cultured at 20°C, 25°C, and 30°C with 3.0x10 6 cells/ml of Scenedesmus obliquus to investigate their responses in life history characteristics relative to temperature. Rotifers such as Brachionus calyciflorus are favored test animals in aquatic toxicology because of their more sensitivity to most toxicants. Las curvas del incremento poblacional de B. calyciflorus y B. havanaensis empleando Alva-Martínez, A. F., S. S. S. Sarma, & S. Nandini, 2007. Brachionus calyciflorus y Brachionus havanaensis. In the tested concentration range of 0.04–1.28 mg/L, aldrin shortened significantly the durations of embryonic development. Lin Huang, Yilong Xi, Xiaoping Xu, Xinli Wen, Responses in population growth and reproduction of the freshwater rotifer Brachionus calyciflorus to microcystin-LR at different temperatures , Annales de Limnologie - International Journal of Limnology, 10.1051/limn/2012029, 48, 4, (383-390), (2012). Brachionus calyciflorus (Rot if era) Fang Chen, Yi-Long Xia, Ya-Li Ge, and Xiao-Ping Xu ... history characteristics of mictic females between the Wuhu and the Qingdao strains, which produced many more resting eggs than the Guangzhou strain. Brachionus is a genus of planktonic rotifers occurring in freshwater, alkaline and brackish water. Four Brachionus calyceflorus clones (clone A, B, C, and D) different in biochemical and genetic characteristics were collected from Jinghu Lake in summer, and their life history traits were studied at 25 degrees C under the conditions of feeding with 1.0 x 10(6), 2.0 x 10(6), 4.0 x 10(6) and 8.0 x 10(6) cells x L(-1) of Scenedesmus obliquus. Covering the body is an external layer of chitin referred to as lorica. Five 400 ml freshwater Chlorella cultures (4.8 x 106 cells Kun Zhang, Quan Wan, Yi-Long Xi, Competition between Brachionus calyciflorus and Brachionus angularis (Rotifera) in relation to algal food level and initial population density , Annales de Limnologie - International Journal of Limnology, 10.1051/limn/2019001, 55, (2), (2019). Eles também são usados como organismos modelo em vários outros campos biológicos, por exemplo, devido ao seu modo reprodutivo interessante na ecologia evolutiva. Trophi with all characteristics of the genus. The organochlorine insecticide aldrin is commonly used in intensive agriculture, and demonstrates estrogenic activity. Key words: Rotifer, Brachionus calyciflorus, HUFA, larvae, food. Brachionus species in Cochin backwaters in relation to environmental characteristics. Biological Characteristics and Growth of the Korean Freshwater Rotifer, Brachionus calyciflorus at Various Temperatures 한국 담수산 윤층 Brachionus calyciflorus의 생물학적 특징과 온도별 성장 강언종 (국립수산진흥원 진해내수면연구소) ; Test design/concentrations Temperature 25 degrees C. Medium (a moderately hard (100 mg/liter CaCO3) synthetic freshwater medium) In the tested concentration range of 0.04-1.28 mg/L, aldrin shortened significantly the durations of embryonic development. They are bilaterally symmetrical organisms that have more than two cell layers as well as tissues and organs. View list … Department of Biological Sciences, Dartmouth College, Hanover, NH, U.S.A. Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, U.S.A. Rotifers such as Brachionus calyciflorus are favored test animals in aquatic toxicology because of their more sensitivity to most toxicants. Rotifers such as Brachionus calyciflorus are favored test animals in aquatic toxicology because of their sensitivity to ... posterior spines present or absent; with or without postero-median spines at foot opening. INTRODUCTION Rotifers are valuable live food for the culture of the larvae of most fish species. However, differences in the adaptability of rotifers sampled from two climatic zones and belonging to the same cryptic species in response to temperature changes remain undescribed. Abstract. One day prior to the experiments, Coleps sp., B. calyciflorus and B. rubens were kept overnight at ambient epilimnetic water temperatures (for the May experiment at 15°C and for the June experiment at 20°C). Differences in life history characteristics between two sibling species in Brachionus calyciflorus complex from tropical shallow lakes Xue Ling Wang, Xian Ling Xiang*, Meng Ning Xia, Ying Han, Lin Huang and Yi Long Xi Key Laboratory of Biotic Environment and Ecological Safety in Anhui Province, College of Life Sciences, Anhui Normal University, Lin Huang, Yilong Xi, Chunwang Zha, Lanlan Zhao, Xinli Wen, Effects of dieldrin and 17β-estradiol on life history characteristics of freshwater rotifer Brachionus calyciflorus Pallas , Journal of Freshwater Ecology, 10.1080/02705060.2012.668499, 27, 3, (381-392), (2012). Effect of Aldrin on Life History Characteristics of Rotifer Brachionus calyciflorus Pallas Effect of Aldrin on Life History Characteristics of Rotifer Brachionus calyciflorus Pallas Huang, L.; Xi, Y.-L.; Zha, C.-W.; Zhao, L.-L. 2007-11-01 00:00:00 The organochlorine insecticide aldrin is commonly used in intensive agriculture, and demonstrates estrogenic activity. calyciflorus s.s. Kutikova & Fernando based on this characteristic describe their ‘b’ form as being intermediate between Brachionus calyciflorus borgerti Apstein, 1907 and the typical form in the sense that the ‘b’ form lacks the saw-like basal tooth in the median spines of the anterodorsal margin of Brachionus calyciflorus borgerti although they have a broad base. The ... A two-day life cycle test with the rotifer Brachionus calyciflorus, in which multiple broods are produced and the F 1 generation also reproduces (Snell & Moffat Life history characteristics of three types of females in Brachionus calyciflorus Pallas (Rotifera) fed different algae By Yi-Long Xi, Xiang-Fei Huang and Hong-Jun Jin Cite We studied the effects of temperature (20, 25 and 30°C) and algal density (0.5, 1.0 and 3.0×10 6 cells.mL −1 Scenedesmus obliquus) on the outcome of competition and duration of coexistence between B. calyciflorus and M. macrocopa using population growth experiments. The larvae of culturable Indian and Chinese major carps hatch in relatively undeveloped state. hsp70, and hsp90) from the rotifer Brachionus calyciflorus Pallas, analyzed their molecular characteristics, determined its modulatory response under different temperatures and H202 concentrations and investigated the changes in expression of these genes during the aging process. Indian J. Responses in population growth and reproduction of the freshwater rotifer Brachionus calyciflorus to microcystin-LR at different temperatures - Volume 48 Issue 4 - … Brachionus calyciflorus Pallas, originally collected in Gainesville, Florida. A very polymorphous species, with many variants described. Brachionus - WikiMili, The Free Encyclopedia - WikiMili, The Free Encyclopedia Population dynamics of Brachionus calyciflorus and Brachionus havanaensis (Rotifera) on mixed diets with Microcystis aeruginosa and green algae. The present study focused on the interrelationships between the distribution of different species of Brachionus and environmental characteristics in the Cochin backwater ecosystem. THOMAS SCHRÖDER. We cloned cDNA encoding hsp genes (hsp40, hsp60, hsp70, and hsp90) from the rotifer Brachionus calyciflorus Pallas, analyzed their molecular characteristics, determined its modulatory response under different temperatures and H 2 O 2 concentrations and investigated the changes in expression of these genes during the aging process. Brachionus calyciflorus and B. rubens were cultured in batch cultures with filtered lake water (<0.2 μm) and fed with Monoraphidium minutum.