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behavioral, morphological and physiological correlates of diurnal and nocturnal vision in selected wading bird species.we examined in selected wading bird species if diurnal or nocturnal foraging and the use of visual or tactile feeding strategies could be correlated with retinal structure and function. the selected species were the yellow-crowned night heron (nycticorax violaceus), a crepuscular and nocturnal forager, the great blue heron (ardea herodias), a mainly crepuscular, but also diurnal and nocturnal feeder, the roseate spoonbill (ajaia ajaja), a mainly crepuscular feeder which forages more at night tha ...199910473901
waterbirds (other than laridae) nesting in the middle section of laguna cuyutlán, colima, méxico.laguna de cuyutlán, in the state of colima, mexico, is the only large coastal wetland in a span of roughly 1150 km. despite this, the study of its birds has been largely neglected. between 2003 and 2006 we assessed the waterbirds nesting in the middle portion of laguna cuyutlán, a large tropical coastal lagoon, through field visits. we documented the nesting of 15 species of non-laridae waterbirds: neotropic cormorant (phalacrocorax brasilianus), tricolored egret (egretta tricolor), snowy egret ...200818624252
bill impaction in a group of captive caribbean flamingos (phoenicopterus ruber ruber).flamingos are filter feeders that only rarely ingest larger food items. their bill anatomy is adapted to the suction, filtration, and ejection of a fluid medium. this case report documents a rare case of bill impaction in a group of caribbean flamingos (phoenicopterus ruber) that were kept in a mixed exhibit together with roseate spoonbills (platalea ajaja) and scarlet ibis (eudocimus ruber). the latter species received fatty minced meat as part of their diet, which was also accessible to the fl ...200717939357
genetic differentiation among populations of the roseate spoonbill (platalea ajaja; aves: pelecaniformes) in three brazilian wetlands.effective population size, levels of genetic diversity, gene flow, and genetic structuring were assessed in 205 colonial roseate spoonbills from 11 breeding colonies from north, central west, and south brazil. colonies and regions exhibited similar moderate levels of diversity at five microsatellite loci (mean expected heterozygosity range 0.50-0.62; allelic richness range 3.17-3.21). the central west region had the highest ne (59). f st values revealed low but significant genetic structuring am ...201424737052
morphological and molecular differentiation of parastrigea (trematoda: strigeidae) from mexico, with the description of a new species.parastrigea plataleae n. sp. (digenea: strigeidae) is described from the intestine of the roseate spoonbill platalea ajaja (threskiornithidae) from four localities on the pacific coast of mexico. the new species is mainly distinguished from the other 18 described species of parastrigea based on the ratio of its hindbody length to forebody length. a principal component analysis (pca) of 16 morphometric traits for 15 specimens of p. plataleae n. sp., five of parastrigea cincta and 11 of parastrige ...201424309555
population genetic study of mitochondrial dna in roseate spoonbill (aves; platalea ajaja) breeding colonies from the pantanal wetlands, brazil.five breeding colonies of the roseate spoonbill (aves: platalea ajaja) from two brazilian wetland areas (pantanal and taim marshes) were sampled, and domain i of the mitochondrial dna control region (483 bp) was sequenced in 50 birds. the average haplotype diversity (h = 0.75, s = 0.071) and average nucleotide diversity (pi = 0.004, s = 0.003) were evaluated, and nonsignificant differences were found among the colonies studied. the lack of differentiation among breeding colonies revealed by amov ...200818504651
genetic structure in brazilian breeding colonies of the roseate spoonbill (platalea ajaja, aves: threskiornithidae).roseate spoonbills (platalea ajaja, linnaeus) are wading birds present in two of the most important brazilian wetlands: the pantanal wetlands and rio grande do sul marshes. natural populations of these species have not been previously studied with variable nuclear molecular markers. in order to support decision making regarding the management and conservation of these populations, we estimated and characterized the distribution of genetic variability among five brazilian breeding colonies. the a ...200717573665
hypopi (acari: hypoderatidae) from the roseate spoonbill (aves: ciconiiformes; threskiornithidae).a new species and additional host records for 4 other species of quiescent deutonymphs (hypopi) of mites of the family hypoderatidae are described from the subcutaneous adipose tissues of a roseate spoonbill, ajaia ajaja l., in florida. the hypopus of phalacrodectes parvus n. sp. most closely resembles that of p. platalea pence & duncan from the african spoonbill, platalea alba scopali, in idiosomatic chaetotaxy and structure of the genital apparatus. it differs from this and other species of th ...19968742529
diversity and prevalence of hemoparasites of wading birds in southern florida, usa.relatively few studies on hemoparasites have been conducted on wading birds in the families ardeidae and threskiornithidae (order pelecaniformes), especially in the united states. in this study, we obtained baseline data on the prevalence and genetic diversity of haemosporidian parasites in wading birds opportunistically sampled from southern florida, usa. we detected blood parasites in white ibis (eudocimus albus), glossy ibis (plegadis falcinellus), green heron (butorides virescens), and rosea ...201729379711
effects of habitat suitability for vectors, environmental factors and host characteristics on the spatial distribution of the diversity and prevalence of haemosporidians in waterbirds from three brazilian wetlands.wetlands are ecosystems in which vectors of avian haemosporidians live and reproduce and where waterbirds join to breed in colonies. brazil has wetlands at different latitudes, which enables testing the influence of the ecological factors on the prevalence and diversity of haemosporidians. we identified avian haemosporidians in waterbird species in three wetlands and investigated the effects of vector habitat suitability, landscape and host characteristics on the diversity and prevalence of thes ...201829716645
identity of cysticercoides menidiae chandler, 1935 (cestoda: dilepididae).cysticercoides menidiae chandler, 1935, described as a metacestode of an unknown dilepidid cestode from the intestinal wall and mesenteries of the silversides menidia menidia (pisces: atherinidae), from galveston bay, texas, was found to be conspecific with ascodilepis transfuga (krabbe, 1869), a tapeworm described from the spoonbill. platalea ajaja linnaeus (syn. ajaja ajaja), from brazil. consequently. c. menidiae becomes a junior synonym of a. transfuga.200111534664
reevaluation of the systematic status of cotylotretus grandis (digenea: psilostomidae) with new morphological data.the digenetic trematode cotylotretus grandis is redescribed on the basis of 130 specimens recovered from the body cavity and small intestine of 5 roseate spoonbills ajaia ajaja (aves, ciconiiformes, threskiornithidae) captured in the pantanal do mato grosso, brazil. the spoonbill a. ajaja is the only host recorded for specimens of c. grandis since 1819, when the species was proposed by rudolphi as distoma grande. the synonymy of mesaulus braun, 1902, with cotylotretus odhner, 1902, is discussed ...200212099439
gryporhynchidae (cestoda: cyclophyllidea) in mexico: species list, hosts, distribution and new records.as a result of this study, 8 new host (botaurus lentiginosus for glossocercus caribaensis and valipora mutabilis; egretta caerulea for valipora minuta; egretta thula for glossocercus cyprinodontis; egretta tricolor and nycticorax nycticorax for glossocercus caribaensis; pelecanus occidentalis and platalea ajaja for paradilepis caballeroi) and 31 new locality records for gryporhynchid cestode species in mexico are presented. with these data, the total number of species of this group of helminths ...201424870465
reconstructing genetic mating systems in the absence of parental information in colonially breeding waterbirds.dna-based studies have demonstrated that avian genetic mating systems vary widely, with many species deviating from long-assumed monogamy by practicing extra-pair paternity and conspecific brood parasitism. colonially breeding waterbirds provide interesting models in which to investigate this question because they show nesting habits proposed to promote alternative reproductive strategies. however, little is known about the genetic mating systems of this group of birds, mainly due to difficultie ...201121740559
redescription, generic allocation and synonymy of decorataria magnilabiata (molin, 1860) n. comb. (nematoda: spirurida: acuariidae), a parasite of the roseate spoonbill platalea ajaja l. (aves: threskiornithidae) in south america.decorataria magnilabiata (molin, 1860) n. comb. is proposed for dispharagus magnilabiatus molin, 1860 [= acuaria (cheilospirura) magnilabiata (molin, 1860) railliet, henry & sisoff, 1912; cheilospirura magnilabiata (molin, 1860) stiles & hassall, 1920; dispharynx magnilabiata (molin, 1860) gendre, 1920] (nematoda, spirurida, acuariidae), a parasite of the roseate spoonbill platalea ajaja l. (ciconiiformes, threskiornithidae) known from brazil, france (bird in captivity), argentina and cuba. the ...201121805387
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