Publications

five new species of isospora from hawaiian birds.	the following species are described from hawaiian birds: isospora brayi sp. n., with oocysts 27 x 26 micron and sporocysts 19 x 12 micron, from the japanese white-eye, zosterops japonicus temminck & schlegel; isospora cardinalis sp. n., with oocysts 24 x 23 micron, and sporocysts 16 x 10 micron, from the cardinal, cardinalis cardinalis (linnaeus); isospora ivensae sp. n., with oocysts 26 x 25 micron, and sporocysts 18 x 12 micron, from the spotted or white-throated munia, lonchura punctulata (li ...	1980	7452523
avian haemosporidian parasites infection in wild birds inhabiting minami-daito island of the northwest pacific, japan.	haemosporidian parasites infection among wild birds inhabiting minami-daito island was studied. blood films from 183 birds representing 4 species of 4 families were examined microscopically. avian haemosporidian parasites were detected in 3 species with an overall prevalence of 59.6%. none of the 30 daito scops owls (otus scops interpositus) examined were infected. either haemoproteus sp. or plasmodium sp. infection was found in 14 of 31 (45.2%) borodino islands white-eyes (zosterops japonicus d ...	2008	18525175
single- and multiple-clade influenza a h5n1 vaccines induce cross protection in ferrets.	the rapid evolution, genetic diversity, broad host range, and increasing human infection with avian influenza a (h5n1) viruses highlight the need for an efficacious cross-clade vaccine. using the ferret model, we compared induction of cross-reactive immunity and protective efficacy of three single-clade h5n1 vaccines and a novel multiple-clade h5n1 vaccine, with and without mf59 adjuvant. reverse genetics (rg) was used to generate vaccine viruses containing the hemagglutinin (ha) and neuraminida ...	2009	19406182
negative effects of an introduced bird species on growth and survival in a native bird community.	exploitative competition is a major determinant of community structure in natural assemblages [1, 2], but, introduced species are rarely competitors that lead to extinction of native species [3, 4]. here we document strong community-wide competition from the japanese white-eye (zosterops japonicus) on native hawaiian passerine birds. introduced in 1929 [5], white-eye successfully invaded old-growth forest and coexisted with eight native species [6], overlapping multiple foraging substrates with ...	2009	19765990
comparative studies of the dorsal surface of the tongue in three avian species by scanning electron microscopy.	the dorsal lingual surfaces of adult blue-and-white flycatcher, hawfinch, and japanese white-eye were examined by scanning electron microscopy. the tongue of the blue-and-white flycatcher shows a conical shape and a median groove is observed on the anterior lingual apex. the tongue of the hawfinch shows a cuspid-like shape and a median groove and separation of the lingual apex are not observed. many processes are observed in the tip of the tongue of the japanese white-eye. results of morphologic ...	2010	20560446
seed dispersal in hong kong, china: past, present and possible futures.	in the present article, published and unpublished information regarding seed dispersal in the degraded landscape of hong kong, china, is reviewed. information was available for 1681 native plant species, of which 1165 were assigned to probable seed dispersal modes. endozoochory accounted for one-third (34.4%) of all species evaluated, half (54.4%) of those from forests, and more than two-thirds (69.2%) of all trees and tall shrubs. wind dispersal (25.9%) and dispersal by an unknown agent (30.7%) ...	2011	21645275
avian influenza viruses in wild land birds in northern vietnam.	given a paucity of data on the occurrence of avian influenza viruses (aivs) in wild passerines and other small terrestrial species in southeast asia and the importance of highly pathogenic asian-strain h5n1 outbreaks in humans and domestic poultry in these areas, we focused on surveillance for influenza a viral nucleic acids and antibodies for aivs in wild-caught birds in northern vietnam. four of 197 serum samples collected in 2007 from black-crested bulbul (pycnonotus melanicterus), crow-bille ...	2012	22247391
generalist passerine pollination of a winter-flowering fruit tree in central china.	winter-flowering plants outside the tropics may experience a shortage of pollinator service, given that insect activity is largely limited by low temperature. birds can be alternative pollinators for these plants, but experimental evidence for the pollination role of birds in winter-flowering plants is scarce.	2012	22112440
ventral-clap modes of hovering passerines.	some small birds typically clap their wings ventrally, particularly during hovering. to investigate this phenomenon, we analyzed the kinematic motion and wake flow field of two passerine species that hover with the same flapping frequency. for these two birds, the ventral clap is classified as direct and cupping. japanese white-eyes undertake a direct clap via their hand wings, whereas gouldian finches undertake a cupping clap with one wing overlaying the other. as a result of their morphologica ...	2013	23496548
resilient plant-bird interactions in a volcanic island ecosystem: pollination of japanese camellia mediated by the japanese white-eye.	observations of interspecies interactions during volcanic activity provide important opportunities to study how organisms respond to environmental devastation. japanese camellia (camellia japonica l.) and its main avian pollinator, the japanese white-eye (zosterops japonica), offer an excellent example of such an interaction as key members of the biotic community on miyake-jima, which erupted in 2000 and continues to emit volcanic gases. both species exhibit higher resistance to volcanic damage ...	2013	23646136
females lead population collapse of the endangered hawaii creeper.	population collapses result from drastic environmental changes, but the sexes may differ in vulnerability. collapse of the endangered hawaii creeper (oreomystis mana) at hakalau forest national wildlife refuge resulted from food limitation associated with increased numbers of an introduced bird (japanese white-eye, zosterops japonicus), which competes with the creeper for food. both creeper sexes had stunted bill growth and the greatest change in molt of native species in the community. with a s ...	2013	23861831
imperfect replacement of native species by non-native species as pollinators of endemic hawaiian plants.	native plant species that have lost their mutualist partners may require non-native pollinators or seed dispersers to maintain reproduction. when natives are highly specialized, however, it appears doubtful that introduced generalists will partner effectively with them. we used visitation observations and pollination treatments (experimental manipulations of pollen transfer) to examine relationships between the introduced, generalist japanese white-eye (zosterops japonicus) and 3 endemic hawaiia ...	2014	24372761
determination of temperate bird-flower interactions as entangled mutualistic and antagonistic sub-networks: characterization at the network and species levels.	most network studies on biological interactions consider only a single interaction type. however, individual species are simultaneously positioned in various types of interactions. the ways in which different network types are merged and entangled, and the variations in network structures between different sympatric networks, require full elucidation. incorporating interaction types and disentangling complex networks is crucial, because the integration of various network architectures has the po ...	2014	24372171
surveillance potential of non-native hawaiian birds for detection of west nile virus.	west nile virus (wnv) was first detected in north america in 1999. alaska and hawaii (hi) remain the only u.s. states in which transmission of wnv has not been detected. dead bird surveillance has played an important role in the detection of the virus geographically, as well as temporally. in north america, corvids have played a major role in wnv surveillance; however, the only corvid in hi is the endangered hawaiian crow that exists only in captivity, thus precluding the use of this species for ...	2015	26304918
origin of japanese white-eyes and brown-eared bulbuls on the volcano islands.	the ogasawara archipelago comprises two groups of oceanic islands: the bonin islands, formed in the paleogene, and the volcano islands, formed in the quaternary. these groups are located within a moderate distance (ca. 160-270 km) of one another; thus, most land bird species are not distinguished as different subspecies. two land birds, however, show unusual distribution. the japanese white-eyes zosterops japonicus originally inhabited only the volcano islands, but has been introduced to the bon ...	2016	27032679
the complete mitochondrial genome of zosterops japonicas (aves, zosteropidae).	the complete mitochondrial genome (mitogenome) sequence of zosterops japonicus was determined by shotgun sequencing. the total length of mitogenome is 17 809 bp, and contains 13 protein-coding genes, 22 trna genes, 2 ribosome rna genes and 2 control regions (cr). all the protein-coding genes in z. japonicus were distributed on the h-strand, except for the nd6 subunit gene and eight trna genes which were encoded on the l-strand. the phylogenetic tree of z. japonicus and 13 other species belonging ...	2016	26707735
no evidence of critical slowing down in two endangered hawaiian honeycreepers.	there is debate about the current population trends and predicted short-term fates of the endangered forest birds, hawai`i creeper (loxops mana) and hawai`i `ākepa (l. coccineus). using long-term population size estimates, some studies report forest bird populations as stable or increasing, while other studies report signs of population decline or impending extinction associated with introduced japanese white-eye (zosterops japonicus) increase. reliable predictors of impending population collaps ...	2017	29131835
potential disruption of seed dispersal in the absence of a native kauai thrush.	hawaii has experienced a catastrophic decline in frugivorous native birds coupled with the introduction of non-native species. puaiohi (myadestes palmeri), a critically endangered thrush, is the sole extant native songbird capable of dispersing fleshy fruited plants in the rainforest of kauai island, hawaii. as this species has declined to occupy a small proportion of its original range, a suite of largely omnivorous non-native birds have been introduced to this region, including the common and ...	2018	29381764
manipulating social information to promote frugivory by birds on a hawaiian island.	animals across a range of taxa use social information when foraging. fruit-eating vertebrates are no exception and use social information to find fruit, which may ultimately affect plant populations via seed dispersal. in many systems, mutualistic relationships between fruiting plants and frugivores are critical to maintain ecosystem functioning, especially in the tropics. on the island of o'ahu, hawaii, usa, all native, fruit-eating birds are extinct and several plant species are experiencing r ...	2019	31247121
spatial variation in bird pollination and its mitigating effects on the genetic diversity of pollen pools accepted by camellia japonica trees within a population at a landscape level.	bird pollination can vary spatially in response to spatial fluctuations in flowering even within plant populations. in this study, we examined the hypothesis that the spatial variation in bird pollination may induce mitigating effects, which maintains or increases genetic diversity of pollen pools at local sites with low flowering densities. to test this hypothesis, we analyzed the landscape-level genetic effects within a population of camellia japonica on the pollen pools accepted by individual ...	2020	31485029