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Robert C. Fleischer - One of the best experts on this subject based on the ideXlab platform.
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Hippoboscid-transmitted Haemoproteus parasites (Haemosporida) infect Galapagos Pelecaniform birds: evidence from molecular and morphological studies, with a description of Haemoproteus iwa.
International journal for parasitology, 2011Co-Authors: Iris I. Levin, Gediminas Valkiūnas, Diego Santiago-alarcon, Larisa Lee Cruz, Sarah L. O’brien, Frank Hailer, Don Dearborn, E. A. Schreiber, Robert C. FleischerAbstract: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 belonging to several different orders, except pigeons and doves (Columbiformes), while the other (Haemoproteus (Haemoproteus)) has previously been shown to only infect dove hosts. Here we provide molecular and morphological identification of Haemoproteus parasites from several seabird species that are closely related to those found in dove hosts. We also document a deeply divergent clade with two haemosporidian lineages recovered primarily from frigatebirds (Fregatidae, Pelecaniformes) that is sister to the hippoboscid-(Hippoboscidae) transmitted dove parasites. One of the lineages in this new clade of parasites belongs to Haemoproteus iwa and is distributed in two species of frigatebird (Fregata) hosts from Hawaii, the Galapagos Islands, the eastern Pacific and throughout the Caribbean Basin. Haemosporidian parasites are often considered rare in seabirds due in part to the lack or low activity of some dipteran vectors (e.g., mosquitos, biting midges) in marine and coastal environments; however, we show that H. iwa is prevalent and is very likely vectored among frigatebirds by hippoboscid flies which are abundant on frigatebirds and other seabirds. This study supports the existence of two sister clades of avian Haemoproteus in accord with the subgeneric classification of avian hemoproteids. Description of H. iwa from Galapagos Fregata minor is given based on morphology of blood stages and segments of the mitochondrial cytochrome b gene, which can be used for identification. This study shows that hippoboscid flies warrant more attention as vectors of avian Haemoproteus spp., particularly in marine and coastal environments.
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Journal compilation © 2008 Blackwell Publishing Ltd Blackwell Publishing LtdPERMANENT GENETIC RESOURCES
2008Co-Authors: Frank Hailer, Don Dearborn, See Profile, Robert C. FleischerAbstract:Microsatellite primers for relatedness and population structure in great frigatebirds (Pelecaniformes: Fregatidae
Don Dearborn - One of the best experts on this subject based on the ideXlab platform.
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Hippoboscid-transmitted Haemoproteus parasites (Haemosporida) infect Galapagos Pelecaniform birds: evidence from molecular and morphological studies, with a description of Haemoproteus iwa.
International journal for parasitology, 2011Co-Authors: Iris I. Levin, Gediminas Valkiūnas, Diego Santiago-alarcon, Larisa Lee Cruz, Sarah L. O’brien, Frank Hailer, Don Dearborn, E. A. Schreiber, Robert C. FleischerAbstract: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 belonging to several different orders, except pigeons and doves (Columbiformes), while the other (Haemoproteus (Haemoproteus)) has previously been shown to only infect dove hosts. Here we provide molecular and morphological identification of Haemoproteus parasites from several seabird species that are closely related to those found in dove hosts. We also document a deeply divergent clade with two haemosporidian lineages recovered primarily from frigatebirds (Fregatidae, Pelecaniformes) that is sister to the hippoboscid-(Hippoboscidae) transmitted dove parasites. One of the lineages in this new clade of parasites belongs to Haemoproteus iwa and is distributed in two species of frigatebird (Fregata) hosts from Hawaii, the Galapagos Islands, the eastern Pacific and throughout the Caribbean Basin. Haemosporidian parasites are often considered rare in seabirds due in part to the lack or low activity of some dipteran vectors (e.g., mosquitos, biting midges) in marine and coastal environments; however, we show that H. iwa is prevalent and is very likely vectored among frigatebirds by hippoboscid flies which are abundant on frigatebirds and other seabirds. This study supports the existence of two sister clades of avian Haemoproteus in accord with the subgeneric classification of avian hemoproteids. Description of H. iwa from Galapagos Fregata minor is given based on morphology of blood stages and segments of the mitochondrial cytochrome b gene, which can be used for identification. This study shows that hippoboscid flies warrant more attention as vectors of avian Haemoproteus spp., particularly in marine and coastal environments.
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Journal compilation © 2008 Blackwell Publishing Ltd Blackwell Publishing LtdPERMANENT GENETIC RESOURCES
2008Co-Authors: Frank Hailer, Don Dearborn, See Profile, Robert C. FleischerAbstract:Microsatellite primers for relatedness and population structure in great frigatebirds (Pelecaniformes: Fregatidae
Frank Hailer - One of the best experts on this subject based on the ideXlab platform.
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Hippoboscid-transmitted Haemoproteus parasites (Haemosporida) infect Galapagos Pelecaniform birds: evidence from molecular and morphological studies, with a description of Haemoproteus iwa.
International journal for parasitology, 2011Co-Authors: Iris I. Levin, Gediminas Valkiūnas, Diego Santiago-alarcon, Larisa Lee Cruz, Sarah L. O’brien, Frank Hailer, Don Dearborn, E. A. Schreiber, Robert C. FleischerAbstract: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 belonging to several different orders, except pigeons and doves (Columbiformes), while the other (Haemoproteus (Haemoproteus)) has previously been shown to only infect dove hosts. Here we provide molecular and morphological identification of Haemoproteus parasites from several seabird species that are closely related to those found in dove hosts. We also document a deeply divergent clade with two haemosporidian lineages recovered primarily from frigatebirds (Fregatidae, Pelecaniformes) that is sister to the hippoboscid-(Hippoboscidae) transmitted dove parasites. One of the lineages in this new clade of parasites belongs to Haemoproteus iwa and is distributed in two species of frigatebird (Fregata) hosts from Hawaii, the Galapagos Islands, the eastern Pacific and throughout the Caribbean Basin. Haemosporidian parasites are often considered rare in seabirds due in part to the lack or low activity of some dipteran vectors (e.g., mosquitos, biting midges) in marine and coastal environments; however, we show that H. iwa is prevalent and is very likely vectored among frigatebirds by hippoboscid flies which are abundant on frigatebirds and other seabirds. This study supports the existence of two sister clades of avian Haemoproteus in accord with the subgeneric classification of avian hemoproteids. Description of H. iwa from Galapagos Fregata minor is given based on morphology of blood stages and segments of the mitochondrial cytochrome b gene, which can be used for identification. This study shows that hippoboscid flies warrant more attention as vectors of avian Haemoproteus spp., particularly in marine and coastal environments.
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Journal compilation © 2008 Blackwell Publishing Ltd Blackwell Publishing LtdPERMANENT GENETIC RESOURCES
2008Co-Authors: Frank Hailer, Don Dearborn, See Profile, Robert C. FleischerAbstract:Microsatellite primers for relatedness and population structure in great frigatebirds (Pelecaniformes: Fregatidae
Stucchi Marcelo - One of the best experts on this subject based on the ideXlab platform.
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The skull of the peruvian booby sula variegata (aves, Sulidae)
ASEFIM Instituto de Capacitación y Consultoría, 2013Co-Authors: Stucchi MarceloAbstract:This paper describes the morphology of the skull of the Peruvian booby Sula variegata (Tschudi, 1845), considering its ontogeny, and compared with other species of the family Sulidae and, similarly, with other families of the traditional order Pelecaniformes: Phalacrocoracidae, Anhingidae, Fregatidae, Phaetonthidae and Pelecanidae. In the comparisons could be found characteristics which the Peruvian booby shares with other members of Sulidae, and others that, taken together, distinguish it from other species of the genus Sula. Among the former are: (1) during ontogenetic development, they change the proportions between the rostrum and the braincase, stretching the first and reducing the height of the second. (2) The skulls have a nasal opening in their early stages of development, which is completely closed with the growth of the bird. The respiratory function moves to a space that is below the pre-orbital fenestra and the jugal, which is protected by ranfoteca. (3) Adult individuals present a trabecular space in the inner part of the upper jaw and frontals that confers resistance to the skull. All these features allow the Sulidae to prevent the rupture or buckling of the skull under the force of the impact of the plunge. In the second case there are: (1) cranial roof slightly vaulted over the orbits; (2) Sagittal crest generally narrow, although wide in some individuals; (3) Short temporal region; (4) Straight proximal rostrum in front of the naso-frontal suture.El presente artículo describe la morfología del cráneo del piquero peruano Sula variegata (Tschudi, 1845), considerando su desarrollo ontogénico, y en comparación con otras especies de la familia Sulidae y, de forma complementaria, con otras familias del tradicional orden Pelecaniformes: Phalacrocoracidae, Anhingidae, Fregatidae, Phaetonthidae y Pelecanidae. En las comparaciones realizadas se pudieron encontrar características que comparte el piquero peruano con los demás miembros de la familia Sulidae, y otras que, en su conjunto, lo diferencian de las demás especies del género Sula. Entre las primeras se tienen: (1) durante el desarrollo ontogénico cambian las proporciones entre el rostrum y la caja craneana, alargándose el primero y reduciéndose la altura del segundo con respecto a este. (2) Los cráneos presentan una abertura nasal en sus estadios iniciales de desarrollo, que se cierra completamente con el crecimiento del ave. La función respiratoria se desplaza hacia un espacio que se encuentra debajo de la fenestra pre-orbitaria y el yugal, que es protegida por la ranfoteca. (3) Los individuos adultos presentan un espacio trabeculado en la parte interna de los frontales y la mandíbula superior, que le confiere resistencia al cráneo. Todas estas características les permiten a los Sulidae evitar la ruptura o pandeo del cráneo ante la fuerza del impacto de la zambullida. En el segundo caso se tienen: (1) techo craneano ligeramente abovedado sobre las órbitas. (2) Cresta sagital por lo general angosta, pero ancha en algunos individuos. (3) Región temporal corta. (4) Porción proximal del rostrum recta, delante de la sutura naso-frontal
Jimmy Villón Moreno - One of the best experts on this subject based on the ideXlab platform.
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Comportamiento social y de forrajeo en aves de la familia laridae y Fregatidae en las playas de Anconcito
Universidad Península de Santa Elena, 2016Co-Authors: Fabian Acosta Campoverde, Daniel Rosales Matos, María Bautista Ortiz, Patricia Terán Abreu, Tanya González Banchón, Jimmy Villón MorenoAbstract:Se realizó la observación in situ del comportamiento social y de forrajeo en aves de la familia Laridae y Fregatidae en tres zonas delimitadas en el Puerto Pesquero Artesanal de Anconcito entre mayo y julio de 2016, identificándose como especies abundantes a Fregata magníficens y Chroicocephalus cirrocephalus. El análisis cualitativo de las características morfofisiológicas observadas se contrastó con la bibliografía consultada; puntualizando que el comportamiento innato y adquirido tienen protagonismo en su patrón fijo y/o variable de conducta social. Por otra parte, el análisis cuantitativo de las variaciones de cantidad de aves y parámetros físicos registrados determinó la influencia antropogénica en la técnica de forrajeo oportunista y cleptoparasitista Abstract The observation was performed in situ about social conduct and foraging of the following families: Laridae and Fregatidae in three areas defined in The Artisanal Fishing Port Anconcito between May and July 2016. Identifying the species Fregata Magnificens and Chroicocephaluscirrocephalus. The qualitative analysis concerning to observed characteristics morphophysiological contrasted with the references; Stipulating that the innate and acquired conduct have protagonism in their fixed pattern and/or variable social conduct. Otherwise, the quantitative analysis of the variations quantity of birds and registered physical parameters determined anthropogenic influence on the foraging´s technique like "the Kleptoparasitism" and "opportunism"