| helminth parasites in six species of shorebirds (charadrii) from the coast of belize. | thirteen species of helminth parasites were recovered from six species of charadriid shorebirds (aves: charadriiformes) from belize: the ruddy turnstone, arenaria interpres, the snowy plover, charadrius alexandrinus, the semipalmated plover, c. semipalmatus, the killdeer, c. vociferus, the white-rumped sandpiper, calidris fuscicollis, and the black-bellied plover, pluvialis squatarola. cestode species were predominant (n = 8), followed by trematode species (n = 3) and acanthocephala (n = 2). the ... | 2001 | 11562710 |
| mercury concentration in the eggs of four canadian arctic-breeding shorebirds not predicted based on their population statuses. | methylmercury is a toxic form of mercury which persists in food webs for long periods of time and biomagnifies up successive trophic levels. shorebirds breeding in the arctic are exposed to methylmercury, derived from both natural and anthropogenic sources, when they ingest their invertebrate prey. populations of many shorebird species are believed to be declining and one hypothesis for these declines is that they are due to detrimental effects of contaminants, including methylmercury. to test t ... | 2013 | 24255861 |
| tetrameres (tetrameres) megaphasmidiata n. sp. (nematoda: tetrameridae), a parasite of the two-banded plover, charadrius falklandicus, and white-rumped sandpiper, calidris fuscicollis, from patagonia, argentina. | tetrameres (tetrameres) megaphasmidiata n. sp. is described from the proventriculus of the two-banded plover, charadrius falklandicus, and the white-rumped sandpiper, calidris fuscicollis, from patagonia, argentina. the new species shares with t. (t.) nouveli, t. (t.) paradisea, t. (t.) prozeskyi, t. paraaraliensis, t. (t.) cladorhynchi, and t. lobybicis the absence of the right spicule and the presence of 4 rows of somatic spines. tetrameres (t.) megaphasmidiata n. sp. differs from the first 4 ... | 2001 | 11227882 |
| linking sex differences in corticosterone with individual reproductive behaviour and hatch success in two species of uniparental shorebirds. | in birds, corticosterone (cort) appears to facilitate reproductive activity because baseline and stress-induced cort levels are elevated in breeding individuals compared with other times of the year. in particular, cort is lower in the sex providing most of the parental care (i.e., incubation), which could be an important adaptation to tolerate stressors that result in abandoning reproduction. therefore, one explanation for sex differences in cort is that lower levels are favoured during the inc ... | 2013 | 23726939 |
| chewing lice (phthiraptera) from calidris fuscicollis (aves: scolopacidae) in southern brazil. | during april and september from 2010 to 2012, 80 birds of the species calidris fuscicollis (white-rumped sandpiper) were collected for parasitological studies in the southern coast of rio grande do sul, under icmbio license no. 26234-1. for ectoparasite collection, the birds were first submerged in water with detergent. the parasites found were fixed in 70% alcohol, cleared in 10% potassium hydroxide and mounted in canada balsam. of 80 birds examined, 79% were parasitized. actornithophilus umbri ... | 2014 | 24742904 |
| feather mites of calidris fuscicollis (aves: scolopacidae) in brazil. | abstractduring the period 2010-2012, eighty individuals of calidris fuscicollis (vieillot, 1819) were collected on the southern coast of rio grande do sul, brazil, with the objective of determining the presence of feather mites. of the 80 birds examined, 32.5% were infested by mites, identified as avenzoaria calidridis (oudemans, 1904) (avenzoariidae) (31.25%), montchadskiana securicata (megnin & trouessart 1884) (pterolichidae) (22.5%) and alloptes limosae (dubinin, 1951) (alloptidae) (6.25%). ... | 2015 | 26560671 |
| feather mites of calidris fuscicollis (aves: scolopacidae) in brazil. | during the period 2010-2012, eighty individuals of calidris fuscicollis (vieillot, 1819) were collected on the southern coast of rio grande do sul, brazil, with the objective of determining the presence of feather mites. of the 80 birds examined, 32.5% were infested by mites, identified as avenzoaria calidridis (oudemans, 1904) (avenzoariidae) (31.25%), montchadskiana securicata (megnin & trouessart 1884) (pterolichidae) (22.5%) and alloptes limosae (dubinin, 1951) (alloptidae) (6.25%). this is ... | 2015 | 26675921 |
| tracing the pathways of neotropical migratory shorebirds using stable isotopes: a pilot study. | we evaluated the potential use of stable isotopes to establish linkages between the wintering grounds and the breeding grounds of the pectoral sandpiper (calidris melanotos), the white-rumped sandpiper (calidris fuscicollis), the baird's sandpiper (calidris bairdii), and other neotropical migratory shorebird species (e.g., tringa spp.). these species molt their flight feathers on the wintering grounds and hence their flight feathers carry chemical signatures that are characteristic of their wint ... | 2003 | 14521278 |
| deceptive nest defence in ground-nesting birds and the risk of intermediate strategies. | nest predation is an important determinant of reproductive success and ground-nesting birds exhibit a variety of nest defence strategies to mitigate the risk. many small-bodied, ground nesting birds rely on deceptive behaviours such as injury-feigning to reduce nest predation: we call this behaviour active deception. however, active deception may entail risks to adults, and passive deceptive behaviour, where individuals effectively sneak away from the nest by flushing at long distances, may be a ... | 2018 | 30296281 |
| a new species of maritrema (trematoda: microphallidae) parasitizing the baird's sandpiper calidris bairdii, and comments about diversity of microphallidae in two nearctic shorebirds at patagonian sites in argentina. | birds are hosts of a wide diversity of trematodes. between them, the microphallidae is a common family with a cosmopolitan distribution. nevertheless, only 10 maritrema species have been recorded previously in south america. the aim of the present paper is to describe a new species of maritrema parasitizing the nearctic baird's sandpiper, calidris bairdii in its wintering areas in patagonia, argentina. we also analyze and compare the microphallid diversity in two host species. we collected 44 c. ... | 2019 | 30248316 |
| consistent declines in wing lengths of calidridine sandpipers suggest a rapid morphometric response to environmental change. | a recent study demonstrated that semipalmated sandpiper (calidris pusilla) wing lengths have shortened from the 1980s to the present-day. we examined alternative and untested hypotheses for this change at an important stopover site, james bay, ontario, canada. we evaluated morphometric patterns in wing length and bill length by age and sex, when possible, and assessed if wing shape has also changed during this time-period. we investigated patterns of morphological change in two additional calidr ... | 2019 | 30943247 |
| geographical variation and population structure in the white-rumped sandpiper calidris fuscicollis as shown by morphology, mitochondrial dna and carbon isotope ratios. | we studied the population structure of a high arctic breeding wader bird species, the white-rumped sandpiper calidris fuscicollis. breeding adults, chicks and juveniles were sampled at seven localities throughout the species' breeding range in arctic canada in 1999. the mitochondrial control region was analysed by dna sequencing, feathers were analysed for carbon isotope ratios (c(13)/c(12)) by isotope ratio mass spectrometry, and morphological measurements were analysed using principal componen ... | 2002 | 28547710 |
| novel avian paramyxovirus (apmv-15) isolated from a migratory bird in south america. | a novel avian paramyxovirus (apmv) isolated from a migratory bird cloacal swab obtained during active surveillance in april 2012 in the lagoa do peixe national park, rio grande do sul state, south of brazil was biologically and genetically characterized. the nucleotide sequence of the full viral genome was completed using a next-generation sequencing approach. the genome was 14,952 nucleotides (nt) long, with six genes (3'-np-p-m-f-hn-l-5') encoding 7 different proteins, typical of apmv. the fus ... | 2017 | 28486490 |
| [three nadejdolepis spasskii & spasskaya, 1954 (cestoda: hymenolepididae) parasites of charadrii (aves) of belize]. | three nadejdolepis from belize, central america, represent new geographical records (1) nadejdolepis paranitidulans (golikova, 1959) (rostellar hooks 40-44 microm long) from charadrius alexandrinus; (2) n. arenariae (cabot, 1969) n. comb. (rostellar hooks 89 microm long) from arenaria interpres; and (3) n. litoralis (webster, 1947) (rostellar hooks 81-85 microm long) from calidris fuscicollis (new host record). additional descriptions, illustrations and information pertaining to these species ar ... | 2000 | 11071154 |