| haemoproteus iwa n. sp. in great frigatebirds (fregata minor [gmelin]) from hawaii: parasite morphology and prevalence. | we describe a new species of haemoproteus kruse, 1890 from great frigatebirds (fregata minor [gmelin]) captured on tern island-french frigate shoals and laysan island in hawaii. parasite prevalence on laysan island (35%) was not significantly different than that of tern island (36%). on laysan, prevalence was highest in juveniles (52%), followed by adult males (29%) and adult females (19%). prevalence on tern was 36% both for adult females and juveniles, and 28% for adult males. parasitemia was ... | 1996 | 8636858 |
| infection by haemoproteus parasites in four species of frigatebirds and description of haemoproteus (parahaemoproteus) valkiūnasi sp. nov. (haemosporida: haemoproteidae). | abstract among seabirds, the family fregatidae stands out with a high prevalence of blood parasites. four of 5 species in this family have been found infected with haemoproteus; however, complete species descriptions with molecular phylogeny are lacking. seventy-five samples from 4 species of frigatebirds, fregata andrewsi, fregata minor, fregata magnificens, and fregata aquila, were screened for infections caused by species of haemoproteus. four different parasites haplotypes were found infec ... | 2011 | 21992108 |
| 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 |
| novel haemoproteus species (haemosporida: haemoproteidae) from the swallow-tailed gull (lariidae), with remarks on the host range of hippoboscid-transmitted avian hemoproteids. | haemoproteus (haemoproteus) jenniae n. sp. (haemosporida: haemoproteidae) is described from a galapagos bird, the swallow-tailed gull creagrus furcatus (charadriiformes, laridae), based on the morphology of its blood stages and segments of the mitochondrial cytochrome b (cyt b) gene. the most distinctive features of h. jenniae development are the circumnuclear gametocytes occupying all cytoplasmic space in infected erythrocytes and the presence of advanced, growing gametocytes in which the pelli ... | 2012 | 22324933 |
| hippoboscid-transmitted haemoproteus parasites (haemosporida) infect galapagos pelecaniform birds: evidence from molecular and morphological studies, with a description of haemoproteus iwa. | haemosporidian parasites are widely distributed and common parasites of birds, and the application of molecular techniques has revealed remarkable diversity among their lineages. four haemosporidian genera infect avian hosts (plasmodium, haemoproteus, leucocytozoon and fallisia), and haemoproteus is split into two sub-genera based on morphological evidence and phylogenetic support for two divergent sister clades. one clade (haemoproteus (parahaemoproteus)) contains parasites developing in birds ... | 2011 | 21683082 |
| testosterone levels and gular pouch coloration in courting magnificent frigatebird (fregata magnificens): variation with age-class, visited status and blood parasite infection. | male magnificent frigatebirds (fregata magnificens) possess a seasonally expressed skin ornament, namely the red and inflatable gular pouch, and are, therefore, a convenient model for the study of some theories related to the evolution of possible testosterone-dependent sexual skin coloration. here we report the findings of a study performed over four consecutive mating seasons in the mexican national park isla isabel. we investigated differences in testosterone level and gular pouch coloration ... | 2007 | 17126838 |
| comparative host-parasite population genetic structures: obligate fly ectoparasites on galapagos seabirds. | parasites often have shorter generation times and, in some cases, faster mutation rates than their hosts, which can lead to greater population differentiation in the parasite relative to the host. here we present a population genetic study of two ectoparasitic flies, olfersia spinifera and olfersia aenescens compared with their respective bird hosts, great frigatebirds (fregata minor) and nazca boobies (sula granti). olfersia spinifera is the vector of a haemosporidian parasite, haemoproteus iwa ... | 2013 | 23659306 |
| infection with haemoproteus iwa affects vector movement in a hippoboscid fly--frigatebird system. | haemosporidian parasites, which require both a vertebrate and invertebrate host, are most commonly studied in the life stages occurring in the vertebrate. however, aspects of the vector's behaviour and biology can have profound effects on parasite dynamics. we explored the effects of a haemosporidian parasite, haemoproteus iwa, on a hippoboscid fly vector, olfersia spinifera. olfersia spinifera is an obligate ectoparasite of the great frigatebird, fregata minor, living among bird feathers for al ... | 2014 | 24215498 |