| novel area serving binocular vision in the retinae of procellariiform seabirds. | procellariiforms are pelagic seabirds which fly close to the sea surface and feed either by taking items from the surface or by shallow diving. the retinal ganglion cells in five species (manx shearwater, puffinus puffinus, kerguelen petrel, pterodroma brevirostris, great shearwater, puffinus gravis, broad-billed prion, pachyptila vittata, and common diving petrel, pelecanoides urinatrix) were examined by nissl staining and also by silver staining in the case of the common diving petrel. in all ... | 1991 | 2054586 |
| a comparison of the olfactory abilities of three species of procellariiform chicks. | most studies investigating olfactory sensitivities in procellariiform seabirds have concentrated on adults, but little attention has been paid to how olfactory behaviours develop. we took a first step towards understanding the ontogeny of these behaviours by testing the olfactory abilities of the blue petrel halobaena caerulea, the thin-billed prion pachyptila belcheri, and the common diving petrel pelecanoides urinatrix. we scored the responsiveness of chicks in a sleep-like state to puffs of o ... | 2003 | 12682093 |
| evidence for nest-odour recognition in two species of diving petrel. | in nearly every procellariiform species, the sense of smell appears to be highly adapted for foraging at sea, but the sense of smell among the diving petrels is enigmatic. these birds forage at considerable depth and are not attracted to odour cues at sea. however, several procellariiform species have recently been shown to relocate their nesting burrows by scent, suggesting that these birds use an olfactory signature to identify the home burrow. we wanted to know whether diving petrels use smel ... | 2003 | 12966063 |
| permanent genetic resources added to molecular ecology resources database 1 february 2012 - 31 march 2012. | this article documents the addition of 171 microsatellite marker loci and 27 pairs of single nucleotide polymorphism (snp) sequencing primers to the molecular ecology resources database. loci were developed for the following species: bombus pauloensis, cephalorhynchus heavisidii, cercospora sojina, harpyhaliaetus coronatus, hordeum vulgare, lachnolaimus maximus, oceanodroma monteiroi, puccinia striiformis f. sp. tritici, rhea americana, salmo salar, salmo trutta, schistocephalus solidus, sousa p ... | 2012 | 22642264 |
| feather mercury concentrations in southern ocean seabirds: variation by species, site and time. | we studied mercury contamination in 25 seabird species breeding along a latitudinal gradient across the southern ocean, from gough island (40°s) through marion island (47°s) to byers peninsula (63°s). total mercury concentrations in body feather samples of adults caught at breeding colonies from 2008 to 2011 were determined. krill (euphausia spp.) and other zooplankton consumers had low mercury concentrations (gentoo penguin pygoscelis papua, chinstrap penguin pseudomonas antarctica, common divi ... | 2016 | 27267741 |
| ecological segregation in space, time and trophic niche of sympatric planktivorous petrels. | the principle of competitive exclusion postulates that ecologically-similar species are expected to partition their use of resources, leading to niche divergence. the most likely mechanisms allowing such coexistence are considered to be segregation in a horizontal, vertical or temporal dimension, or, where these overlap, a difference in trophic niche. here, by combining information obtained from tracking devices (geolocator-immersion and time depth recorders), stable isotope analyses of blood, a ... | 2013 | 23646155 |
| stable isotope evidence of diverse species-specific and individual wintering strategies in seabirds. | although there is increasing evidence that climatic variations during the non-breeding season shape population dynamics of seabirds, most aspects of their winter distribution and ecology remain essentially unknown. we used stable isotope signatures in feathers to infer and compare the moulting (wintering) habitat of subantarctic petrels breeding at two distant localities (south georgia and kerguelen). petrels showed species-specific wintering habitat preferences, with a similar pattern of latitu ... | 2006 | 17148388 |
| development of homeothermy in the diving petrels pelecanoides urinatrix exsul and p. georgicus, and the antarctic prion pachyptila desolata. | body temperatures of south georgia diving petrel (p. georgicus) chicks increased from about 37.5 degrees c at hatching to between 38.5 and 39 degrees c within two weeks. temperatures of common diving petrel p. u. exsul chicks averaged 38.8 degrees c after two weeks of age. burrow temperatures varied between 5 and 10 degrees c. measurements of oxygen consumption and body temperature indicated that chicks achieve effective endothermy at 5 degrees c after 9 days in p. u. exsul, 5-6 days in p. georg ... | 1983 | 6135546 |
| elevated mercury concentrations in the feathers of grey-faced petrels (pterodroma gouldi) in new zealand. | our objective was to measure the concentrations of hg, as, cd, co, cr, cu, pb, sb, v and zn in the body feathers of grey-faced petrel (pterodroma gouldi), fluttering shearwater (puffinus gavia), little shearwater (puffinus assimilis) and common diving petrel (pelecanoides urinatrix) from breeding colonies in new zealand between 2006 and 2013. the mean hg concentration (36.48ppm; sd=9.59) in grey-faced petrel feathers was approximately 8.5 to 14 times that detected in the other three species samp ... | 2017 | 28372818 |
| trophic niches of a seabird assemblage in bass strait, south-eastern australia. | the foraging niches of seabirds are driven by a variety of factors, including competition for prey that promotes divergence in trophic niches. bass strait, south-eastern australia, is a key region for seabirds, with little penguins eudyptula minor, short-tailed shearwaters ardenna tenuirostris, fairy prions pachyptila turtur and common diving-petrels pelecanoides urinatrix being particularly abundant in the region. the trophic niches of these species were investigated using isotopic values in wh ... | 2020 | 32201643 |