| ecology and removal of introduced rhesus monkeys: desecheo island national wildlife refuge, puerto rico. | a field project was conducted to remove an introduced population of rhesus macaques (macaca mulatta) from desecheo island national wildlife refuge, puerto rico. a group of 57 monkeys from cayo santiago was released on desecheo island in 1966 to study processes of adaptation. observations in 1969 and 1970 implicated the monkeys in a drastic decline of the nesting populations of brown boobies (sula leucogaster) and red-footed boobies (sula sula). previous efforts at trapping and removal had been c ... | 1989 | 2780956 |
| phylogeny and evolution of the sulidae (aves:pelecaniformes): a test of alternative modes of speciation. | although the allopatric model of speciation is widely accepted, it does not provide a satisfactory explanation for many evolutionary phenomena. several alternative models exist, but they remain largely untested for vertebrate animals. in the present paper, a molecular phylogeny was used to test competing models of speciation in a seabird family, the sulidae. a segment including 807 base pairs of the mitochondrial cytochrome b gene was sequenced from all extant sulid species, and phylogenetic met ... | 1997 | 9126567 |
| weights, hematology, and serum chemistry of seven species of free-ranging tropical pelagic seabirds. | i established reference values for weight, hematology, and serum chemistry for seven species of free-ranging hawaiian tropical pelagic seabirds comprising three orders (procellariiformes, pelecaniformes, charadriiformes) and six families (procellariidae, phaethontidae, diomedeidae, sulidae, fregatidae, and laridae). species examined included 84 hawaiian darkrumped petrels (pterodoma phaeopygia), 90 wedge-tailed shearwaters (puffinus pacificus), 151 laysan albatrosses (diomedea immutabilis), 69 r ... | 1996 | 9359064 |
| metal levels in feathers of 12 species of seabirds from midway atoll in the northern pacific ocean. | seabirds are excellent subjects for examination of heavy metals because they are long-lived, feed at different distances from land, and exhibit different trophic levels. in this paper we compare the levels of lead, cadmium, mercury arsenic, chromium, manganese, selenium, and tin in the feathers of birds nesting on midway atoll in the northern pacific ocean. we test the null hypothesis that there are no interspecific differences in the levels of metals in the feathers of the adult black-footed al ... | 2000 | 10943901 |
| toxoplasmosis in three species of native and introduced hawaiian birds. | toxoplasma gondii was found in endemic hawaiian birds, including 2 nene geese (nesochen sandvicensis), 1 red-footed booby (sula sula), and an introduced bird, the erckels francolin (francolinus erckelii). all 4 birds died of disseminated toxoplasmosis; the parasite was found in sections of many organs, and the diagnosis was confirmed by immunohistochemical staining with anti-t. gondii-specific polyclonal antibodies. this is the first report of toxoplasmosis in these species of birds. | 2002 | 12435157 |
| sex-specific foraging behaviour in a seabird with reversed sexual dimorphism: the red-footed booby. | most hypotheses attempting to explain the evolution of reversed sexual dimorphism (rsd) assume that size-related differences in foraging ability are of prime importance, but the studies on sex-specific differences in foraging behaviour remain scarce. we compare the foraging behaviour of males and females in a seabird species with a rsd by using several miniaturised activity and telemetry loggers. in red-footed boobies males are 5% smaller and 15% lighter than females, but have a longer tail than ... | 2006 | 16195880 |
| p and trace metal contents in biomaterials, soils, sediments and plants in colony of red-footed booby (sula sula) in the dongdao island of south china sea. | concentrations of p and trace metals zn, cu, cd, pb and hg in the faeces, bones, eggshells and feathers of seabirds and in the plants, soils and sediments with and without seabird influence on dongdao island, south china sea, were determined and analyzed. among the seabird biomaterials, the levels of p, zn, cu and cd are the highest in the droppings and several times those in other materials; the hg concentration is the highest in the feathers; and the pb content is comparable among these biomat ... | 2006 | 16530247 |
| bird remains from an archaeological site on henderson island, south pacific: man-caused extinctions on an "uninhabited" island. | long thought never to have been inhabited and to be in a pristine ecological state, henderson island (southeast pacific) is now known to have been colonized and then abandoned by polynesians. bones from an archaeological site on the island associated with (14)c dates of approximately 800 and approximately 500 years b.p. include specimens of 12 species of birds, of which 3, a storm-petrel and two pigeons (nesofregetta fuliginosa, ducula cf. aurorae or d. pacifica, and ducula cf. galeata), no long ... | 1985 | 16593606 |
| the genetic basis of the plumage polymorphism in red-footed boobies (sula sula): a melanocortin-1 receptor (mc1r) analysis. | the red-footed booby (sula sula) is considered one of the most polymorphic seabirds, with 3 recognized major adult plumage types: 1) white, 2) white-tailed brown, and 3) brown and several degrees of intermediates. here we show that the white/melanic polymorphism observed in this species is perfectly associated with 2 point substitutions, val85met and his207arg, at the melanocortin-1 receptor (mc1r) gene. among the melanic plumage variants, we also found a strong association between the degree of ... | 2007 | 17602182 |
| comparative phylogeography of brown (sula leucogaster) and red-footed boobies (s. sula): the influence of physical barriers and habitat preference on gene flow in pelagic seabirds. | to test the hypothesis that both physical and ecological barriers to gene flow drive population differentiation in tropical seabirds, we surveyed mitochondrial control region variation in 242 brown boobies (sula leucogaster), which prefer inshore habitat, and 271 red-footed boobies (s. sula), which prefer pelagic habitat. to determine the relative influence of isolation and gene flow on population structure, we used both traditional methods and a recently developed statistical method based on co ... | 2010 | 19931624 |
| to breed or not to breed: a seabird's response to extreme climatic events. | intermittent breeding is an important life-history strategy that has rarely been quantified in the wild and for which drivers remain unclear. it may be the result of a trade-off between survival and reproduction, with individuals skipping breeding when breeding conditions are below a certain threshold. heterogeneity in individual quality can also lead to heterogeneity in intermittent breeding. we modelled survival, recruitment and breeding probability of the red-footed booby (sula sula), using a ... | 2010 | 20943677 |
| permanent genetic resources added to molecular ecology resources database 1 october 2009-30 november 2009. | this article documents the addition of 411 microsatellite marker loci and 15 pairs of single nucleotide polymorphism (snp) sequencing primers to the molecular ecology resources database. loci were developed for the following species: acanthopagrus schlegeli, anopheles lesteri, aspergillus clavatus, aspergillus flavus, aspergillus fumigatus, aspergillus oryzae, aspergillus terreus, branchiostoma japonicum, branchiostoma belcheri, colias behrii, coryphopterus personatus, cynogolssus semilaevis, cy ... | 2010 | 21565039 |
| millennial mercury records derived from ornithogenic sediment on dongdao island, south china sea. | two ornithogenic sediment cores, which have a time span of 1000 years and are influenced by red-footed booby (sula sula), were collected from dongdao islands, south china sea. the determined mercury concentrations of the two cores show similar and substantial fluctuations during the past millennium, and the fluctuations are most likely caused by the changes in mercury level of the ocean environment and in anthropogenic hg emission. for the past 500 years, the mercury concentration in the red-foo ... | 2011 | 22432275 |
| haemoproteus iwa in great frigatebirds (fregata minor) in the islands of the western indian ocean. | blood parasites of the sub-genus haemoproteus have been reported in seabirds, in particular in species in the suliformes order. these parasites are transmitted by hippoboscid flies of the genus olfersia; strong specificity has been suggested between the vector and its vertebrate host. we investigated the prevalence of haemoproteus infection in suliformes and hippoboscid flies in two oceanic islands of the western indian ocean: europa and tromelin. in total, 209 blood samples were collected from ... | 2014 | 24810172 |
| serological evidence for the circulation of flaviviruses in seabird populations of the western indian ocean. | birds play a central role in the epidemiology of several flaviviruses of concern for public and veterinary health. seabirds represent the most abundant and widespread avifauna in the western indian ocean and may play an important role as host reservoirs and spreaders of arthropod-borne pathogens such as flaviviruses. we report the results of a serological investigation based on blood samples collected from nine seabird species from seven islands in the indian ocean. using a commercial competitiv ... | 2016 | 26194365 |
| blood parasites in noddies and boobies from brazilian offshore islands - differences between species and influence of nesting habitat. | seabirds are often free from blood parasites, and a recent review suggested that phylogenetic, ecological and life-history parameters can determine the prevalence of blood parasites in seabirds. however, there is a lack of data available from many seabird groups, and a larger database is needed to understand prevalence patterns of blood parasites. we used a molecular screening approach to detect parasites of the genera plasmodium, haemoproteus, leucocytozoon and babesia in five species of two ge ... | 2014 | 24229724 |
| comparative ectoparasite loads of five seabird species in the galapagos islands. | in this paper we describe the ectoparasitic lice (insecta: phthiraptera) found on 5 species of seabirds (magnificent frigatebird fregata magnificens; great frigatebird fregata minor ; nazca booby sula granti ; blue-footed booby sula nebouxii ; and red-footed booby sula sula ) on the galapagos archipelago. we found 9 species of ectoparasitic lice: 5 species of pectinopygus ischnocerans, 1 infesting each host; 2 species of colpocephalum amblyceran lice, 1 on each frigatebird species; and 2 shared ... | 2014 | 24911632 |
| evolution of the melanocortin-1 receptor (mc1r) in boobies and gannets (aves, suliformes). | the melanocortin-1 receptor (mc1r) has been linked to intraspecific variation of melanin-based plumage color in several unrelated bird species. however, its involvement in interspecific variation has far less evidence. the sulidae is a family in the suliformes composed of 10 species of pelagic seabirds, distributed in 3 genera. there is significant variation in the amount and distribution of melanin pigments among species in the family sulidae, and 2 species, the brown booby (sula leucogaster) a ... | 2012 | 22351934 |
| climate oscillation and the invasion of alien species influence the oceanic distribution of seabirds. | spatial and temporal distribution of seabird transiting and foraging at sea is an important consideration for marine conservation planning. using at-sea observations of seabirds (n = 317), collected during the breeding season from 2012 to 2016, we built boosted regression tree (brt) models to identify relationships between numerically dominant seabird species (red-footed booby, brown noddy, white tern, and wedge-tailed shearwater), geomorphology, oceanographic variability, and climate oscillatio ... | 2020 | 32953065 |
| evidence for complex sources of persistent halogenated compounds in birds from the south china sea. | persistent halogenated compounds (phcs), including dichlorodiphenyltrichloroethane and its metabolites (ddts), polybrominated diphenyl ethers (pbdes), alternative brominated flame retardants (abfrs), and dechlorane plus (dp), were analyzed in muscle of six bird species from the south china sea. ddts, with concentrations up to 19,000 ng/g lipid weight (lw), were the dominant contaminants contributing to 66-99% of phcs in birds. concentrations of pbdes, abfrs, and dp ranged from 1.1 to 130, 0.73-4 ... | 2020 | 32251911 |
| tissue-specific δ13c in ancient and modern tropical seabirds and flying fish in the xisha islands, south china sea. | we analyzed 13c characteristics in samples of bird bones, feathers, eggshell carbonate and membrane from modern specimens of red-footed booby (sula sula) as well as fish muscle, scales, and bones from its predominant food source, flying fish (exocoetus volitans), and muscle from its secondary food source squid (loligo chinensis), as well as in ancient sub-fossil samples of seabird and flying fish at the xisha islands, south china sea. δ13c is tissue-specific in both seabirds and flying fish due ... | 2018 | 29973087 |
| health status of red-footed boobies ( sula sula) determined by hematology, biochemistry, blood gases, and physical examination. | the red-footed booby ( sula sula) is a widely distributed sulid native to the galápagos archipelago. hematology and blood chemistry parameters have been published for this species, but not from the san cristóbal rookery. analyses were run on blood samples drawn from 31 manually restrained red-footed boobies that were captured by hand from their nests at punta pitt on san cristóbal island. a portable blood analyzer (istat) was used to obtain near immediate field results for ph, partial pressure o ... | 2017 | 29297841 |
| ontogeny of foraging behaviour in juvenile red-footed boobies (sula sula). | the early life stages represent a crucial period that can strongly influence population dynamics. we studied the development of foraging behaviour in the red-footed booby, a tropical seabird with an extensive post-fledging care period (3 to 6 months). adults and juveniles were observed from shore and tracked at sea using gps loggers over 3 consecutive 12-day periods. juveniles initially made a majority of flights inland, likely to practice flying, and formed groups of up to 10 juveniles before m ... | 2017 | 29066750 |