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Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Predation By Apocyclops Royi (Cyclopoid: Copepod) On Ciliates And Rotifers, Raunak Dhanker, Jiang-Shiou Hwang
Predation By Apocyclops Royi (Cyclopoid: Copepod) On Ciliates And Rotifers, Raunak Dhanker, Jiang-Shiou Hwang
Journal of Marine Science and Technology
We studied the prey consumption rates in Apocyclops royi on neonate and adult rotifers, Brachionus rotundiformis and ciliate, Euplotes sp. in the presence and absence of algae, the smaller Isochrysis galbana and the larger Tetraselmis chui. Both males and females of A. royi were able to successfully ingest neonate and adult rotifers and ciliate. The prey consumption rates were significantly lower in males than in females of A. royi. Regardless of sex and reproductive state of the copepod, prey consumption rates were higher on neonates rotifer than on adults. However, the prey consumption rates were significantly lower on ciliate than …
Jellyfish Identification And Quantification In The San Francisco Estuary, Amalia Borson, Lindsay L. Sullivan, Wim Kimmerer
Jellyfish Identification And Quantification In The San Francisco Estuary, Amalia Borson, Lindsay L. Sullivan, Wim Kimmerer
STAR Program Research Presentations
As potential predators and competitors of plankton-eating fish, jellyfish have the potential to negatively impact fish populations. Jellyfish were collected weekly with plankton tows from the RombergTiburonCenterpier in Tiburon, CA. Since some jellyfish were too small to identify, one tow was collected and preserved to record abundances, and a second tow was collected to rear jellyfish until distinguishing characteristics were visible enough for identification. Jellyfish in the preserved tows were then identified, measured, and counted, and their abundance (number m-3) was calculated. Jellyfish from the second tows were reared in plastic buckets that were lightly bubbled using aquarium …
Intraspecific Relationships In Paracalanus Quasimodo [Calinoideae] And Temora Turbinata [Calinoideae] Along The Southeastern Coast Of The United States, Richard Y. Chang
Intraspecific Relationships In Paracalanus Quasimodo [Calinoideae] And Temora Turbinata [Calinoideae] Along The Southeastern Coast Of The United States, Richard Y. Chang
FIU Electronic Theses and Dissertations
Paracalanus quasimodo and Temora turbinata are two calanoid copepods prominent in the planktonic communities of the southeastern United States. Despite their prominence, the species and population level structure of these copepods is yet unexplored. The phylogeographic, temporal and phylogenetic structure of P. quasimodo and T. turbinata are examined in my study. Samples were collected from ten sites along the Gulf of Mexico and Florida peninsular coasts. Three sites were sampled quarterly for two years. Individuals were screened for unique ITS-1 sequences with denaturing gradient gel electrophoresis. Unique variants were sequenced at the nuclear ITS-1 and mitochondrial COI loci. Sampling sites …
Comparison Of The Effects Of Toxic Cyanobacteria On The Reproductive Success Of Eurytemora Affinis Populations In The Baltic Sea And Green Bay, Wisconsin, Amanda Dwyer
Lawrence University Honors Projects
The Northern Baltic Sea, off the southern coast of Finland, and Green Bay, off Lake Michigan in Wisconsin, both experience large toxic cyanobacteria blooms, especially during the summer and early fall months. Nodularia spumigena is the toxic algae in the Baltic Sea and produces the toxin Nodularin. Nodularin is a toxin that has branched from the toxin Microcystin, which is produced by Microcystis, the toxic algae forming blooms in Green Bay. While the toxin often acts as a defense mechanism to deter zooplankton from grazing, the calenoid copepod Eurytemora affinis, with populations in both the Baltic and Green Bay, …