نتایج جستجو برای: acartia tonsa

تعداد نتایج: 484  

2006
Acartia tonsa Hae Jin Jeong

This study investigated feeding rates and selective feeding of the common copepod Acartia tonsa on mixtures of the heterotrophic dinoflagellate Protoperidinium cf. divergens and the cooccurring red-tide dinoflagellate Gonyaulax polyedra and predation effects of A. tonsa on the population growth of P cf. divergens during simulated red-tide and non-red-tide periods. Ingestion and clearance rates ...

2009
Gang Chen Matthew P. Hare Thomas D. Kocher Michael R. Roman Jeffrey W. Shultz Lizhu Chen

Title of Dissertation: CRYPTIC DIVERSITY, ECOLOGICAL DIFFERENTIATION AND POPULATION GENETICS OF AN ESTUARINE COPEPOD, ACARTIA TONSA DANA 1849 (COPEPODA: CALANOIDA) Gang Chen, Doctor of Philosophy, 2009 Dissertation directed by: Dr. Matthew P. Hare Assistant Professor, Department of Biology, University of Maryland, College Park Associate Professor, Department of Natural Resources, Cornell Univer...

2009
Marc Andersen Borg

.................................................................................................. 3 LIST OF PAPERS......................................................................................... 4 INTRODUCTION........................................................................................... 6 Biological invasions The Baltic Sea and the North American Great Lakes – invasion ho...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Darren S Dunlap Terry Fei Fan Ng Karyna Rosario Jorge G Barbosa Anthony M Greco Mya Breitbart Ian Hewson

As dominant members of marine mesozooplankton communities, copepods play critical roles in oceanic food webs and biogeochemical cycling. Despite the ecological significance of copepods, little is known regarding the causes of copepod mortality, and up to 35% of total copepod mortality cannot be accounted for by predation alone. Viruses have been established as ecologically important infectious ...

2007
José Mauro Sterza Luiz Loureiro Fernandes

In order to characterize the zooplankton community at the Vitória Bay estuarine system (Southeastern Brazil), samples were collected in 10 sampling stations during a three-year study (1998-2000), every three months. A total of 64 taxa were identified. Copepoda contributed with the highest species number (49) in the community, especially with Acartia lilljeborgi, Acartia tonsa, Paracalanus parvu...

2011
Roswati Md Amin Marja Koski Ulf Båmstedt Charles Vidoudez

Three strains of the chain-forming diatom Skeletonema marinoi, differing in their production of polyunsaturated aldehydes (PUA) and nutritional food components, were used in experiments on feeding, egg production, hatching success, pellet production, and behavior of three common planktonic copepods: Acartia tonsa, Pseudocalanus elongatus, and Temora longicornis. The three different diatom strai...

2009
tonsa Dana Kam Tang Claudia Dziallas Kristine Hutalle-Schmelzer Hans-Peter Grossart

Effects of food on bacterial community composition associated with the copepod Acartia tonsa Dana Kam Tang*, Claudia Dziallas, Kristine Hutalle-Schmelzer and Hans-Peter Grossart Virginia Institute of Marine Science, Gloucester Point, VA 23062-1346, USA Leibniz Institute of Freshwater Ecology and Inland Fisheries, 12587 Berlin, Germany Biological Sciences, University of Santo Tomas, Manila 1015,...

Journal: :Journal of experimental marine biology and ecology 2000
Gaudy Cervetto Pagano

In the Marseilles region (French Mediterranean coast), A. clausi is one of the most abundant copepod species of the Gulf of Fos while A. tonsa constitutes the almost exclusive copepod species of the Berre lagoon, a neighbouring semi-closed brackish area communicating with the gulf. As different ecophysiological capabilities to stand the various temperature, salinity and food conditions could ex...

1999

The effect of foraging behavior on predation risk was studied by exposing the two small Calanoid copepods Acartia clausi and Acartia tonsa to 0 or 1 ppm (1,500 cells ml-l) of the diatom Thalassiosira weissfogii and to presence of the predator Pureuchaeta norvegica. In filtered water, predation rate was the same on the two species. In algal suspension, predation rate on A. clausi was half that i...

2013
David T. Elliott James J. Pierson Michael R. Roman

We describe a model predicting the effects of low environmental oxygen on vital rates (egg production, somatic growth, and mortality) of the coastal planktonic copepod Acartia tonsa. Hypoxic conditions can result in respiration rate being directly limited by oxygen availability. We hypothesized that A. tonsa egg production, somatic growth, and ingestion rates would all respond in a similar mann...

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