| susceptibility of avian hosts to experimental gymnophalloides seoi infection. | to determine whether avian species are susceptible to infection with gymnophalloides seoi (a human-infecting intestinal trematode), we exposed 7 species of birds with metacercariae obtained from oysters. the birds were necropsied at days 2, 4, and 6 postinfection (pi). the highest worm recovery at day 6 pi was obtained from the kentish plover (charadrius alexandrinus; mean = 56.0%), followed by the mongolian plover (c. mongolus; 49.3%), and the grey plover (pluvialis squatarola; 32.3%). in contr ... | 2001 | 11318587 |
| [sequence variation of mitochondrial cytochrome b gene and phylogenetic relationships among twelve species of charadriiformes]. | studies of the phylogenetic relationships of the charadriiformes have been largely based on conservative morphological characters. during the past 10 years, many studies on the evolutionary biology of birds adopted phylogenetic information obtained from mitochondrial dna, but few work on the charadriiformes has been reported to date. therefore, phylogenetic relationships and classification of the charadriiformes remains controversial. in this study, we try to shed light on these relationships vi ... | 2003 | 12924155 |
| acute and/or chronic contaminations of heavy metals in shorebirds from korea. | zinc, copper, lead and cadmium were measured in the livers, kidneys and bones of terek sandpipers (xenus cinereus), great knots (calidris tenuirostris) and red-necked stints (calidris ruficollis) from the okgu mudflat, korea. zinc concentrations in bones were significantly higher in terek sandpipers than the other two species and differed among tissues in terek sandpipers. copper concentrations in kidneys and bones but not livers differed among species. copper concentrations in terek sandpipers ... | 2010 | 20603672 |
| heavy metal concentrations in three shorebird species from okgu mudflat, gunsan, korea. | iron, zinc, copper, lead, and cadmium were measured in livers of three shorebird species from okgu mudflat, korea in the east asian-australian migration flyways. iron concentrations in red-necked stints (calidris ruficollis) (geomean = 1,322 microg/g dw) were higher than in terek sandpipers (xenus cinereus) (467 microg/g dw), and great knots (calidris tenuirostris) (158 microg/g dw). copper concentrations in great knots (85.8 microg/g dw) were significantly higher than in red-necked stints (15.9 ... | 2009 | 18763038 |
| three australian leg-flagged great knots (calidris tenuirostris) found on the islet coast of jinmen (quimoy) in fujian, china. | | 2015 | 25855232 |
| discovery of parvatrema duboisi and parvatrema homoeotecnum (digenea: gymnophallidae) from migratory birds in korea. | adult worms of parvatrema spp. (digenea: gymnophallidae) were found in the intestines of 2 species of migratory birds, i.e., a great knot, calidris tenuirostris, and 2 mongolian plovers, charadrius mongolus, in the coastal area of gunsan-si, jeollabuk-do in october 2009. the recovered parvatrema worms were 79 in total number and composed of 2 species. the worms from a great knot were 289 µm in length with the oral and ventral sucker ratio of 2 : 1. they had a single vitellarium, and their intrau ... | 2010 | 20877510 |
| is long-distance bird flight equivalent to a high-energy fast? body composition changes in freely migrating and captive fasting great knots. | we studied changes in body composition in great knots, calidris tenuirostris, before and after a migratory flight of 5,400 km from northwest australia to eastern china. we also took premigratory birds into captivity and fasted them down to their equivalent arrival mass after migration to compare organ changes and nutrient use in a low-energy-turnover fast with a high-energy-turnover fast (migratory flight). migrated birds were as economical as any fasting animal measured yet at conserving protei ... | 2006 | 11331517 |
| empirical evidence for differential organ reductions during trans-oceanic bird flight. | since the early 1960s it has been held that migrating birds deposit and use only fat as fuel during migratory flight, with the non-fat portion of the body remaining homeostatic. recent evidence from field studies has shown large changes in organ sizes in fuelling birds, and theory on fuel use suggests protein may be a necessary fuel during flight. however, an absence of information on the body condition of migrants before and after a long flight has hampered understanding of the dynamics of orga ... | 2000 | 10687826 |
| morphological and digestive adjustments buffer performance: how staging shorebirds cope with severe food declines. | organisms cope with environmental stressors by behavioral, morphological, and physiological adjustments. documentation of such adjustments in the wild provides information on the response space in nature and the extent to which behavioral and bodily adjustments lead to appropriate performance effects. here we studied the morphological and digestive adjustments in a staging population of migrating great knots calidris tenuirostris in response to stark declines in food abundance and quality at the ... | 2019 | 31015972 |