| erection of ceratonova n. gen. (myxosporea: ceratomyxidae) to encompass freshwater species c. gasterostea n. sp. from threespine stickleback (gasterosteus aculeatus) and c. shasta n. comb. from salmonid fishes. | ceratonova gasterostea n. gen. n. sp. is described from the intestine of freshwater gasterosteus aculeatus l. from the klamath river, california. myxospores are arcuate, 22.4 ± 2.6 μm thick, 5.2 ± 0.4 μm long, posterior angle 45° ± 24°, with 2 sub-spherical polar capsules, diameter 2.3 ± 0.2 μm, which lie adjacent to the suture. its ribosomal small subunit sequence was most similar to an intestinal parasite of salmonid fishes, ceratomyxa shasta (97%, 1,671/1,692 nucleotides), and distinct from a ... | 2014 | 24754344 |
| a new opecoelid species (trematoda: opecoelidae) from the threespine stickleback gasterosteus aculeatus l. in california. | plagioporus kolipinskii n. sp. (trematoda: opecoelidae) is described from the intestine of the threespine stickleback, gasterosteus aculeatus l., from lobos creek, a freshwater stream in presidio, san francisco county, california. plagioporus kolipinskii is morphologically somewhat similar to 4 (p. serotinus , p. angusticollis , p. macrouterinus , and p. shawi []) of the 12 currently recognized north american species of the genus, but can be readily distinguished from all 4 in possessing a much ... | 2009 | 19463035 |
| environmental factors influencing survival of threespine stickleback (gasterosteus aculeatus) in a multipurpose constructed treatment wetland in southern california. | survival of the threespine stickleback, gasterosteus aculeatus, differed among marshes in a demonstration 9.9-ha multipurpose constructed treatment wetland designed to improve the quality of secondary-treated municipal wastewater in southern california. at a mean loading rate of 3.3 kg nh4-n ha(-1) d(-1) (6 kg total n ha(-1) d(-1)), the suitability of the wetland to support a population of sticklebacks was estimated to be low. the development of potentially toxic levels of un-ionized ammonia, pa ... | 2007 | 17633430 |
| prey fish returned to forster's tern colonies suggest spatial and temporal differences in fish composition and availability. | predators sample the available prey community when foraging; thus, changes in the environment may be reflected by changes in predator diet and foraging preferences. we examined forster's tern (sterna forsteri) prey species over an 11-year period by sampling approximately 10,000 prey fish returned to 17 breeding colonies in south san francisco bay, california. we compared the species composition among repeatedly-sampled colonies (≥ 4 years), using both relative species abundance and the compositi ... | 2018 | 29543811 |