Serendipity with chewing lice (Phthiraptera: Menoponidae, Philopteridae) infesting rock pigeons and mourning doves (Aves: Columbiformes: Columbidae) in Manitoba, with new records for North America and Canada

2008 ◽  
Vol 140 (2) ◽  
pp. 208-218 ◽  
Author(s):  
Terry D. Galloway ◽  
Ricardo L. Palma
Keyword(s):  
North America ◽  
New Records ◽  
Columba Livia ◽  
The Other ◽  
Mourning Dove ◽  
Zenaida Macroura ◽  
Chewing Lice ◽  
Extensive Survey ◽  
Rock Pigeon ◽  
Mourning Doves

AbstractAn extensive survey of chewing lice from rock pigeon, Columba livia Gmelin, and mourning dove, Zenaida macroura (L.), carried out from 1994 to 2000 and from 2003 to 2006 in Manitoba, Canada, produced the following new records: Colocerastovornikae Tendeiro for North America; Columbicola macrourae (Wilson), Hohorstiellalata (Piaget), H. paladinella Hill and Tuff, and Physconelloides zenaidurae (McGregor) for Canada; and Bonomiella columbae Emerson, Campanulotes compar (Burmeister), Columbicola baculoides (Paine), and C. columbae (L.) for Manitoba. We collected 25 418 lice of four species (C. compar, C. columbae, H. lata, and C. tovornikae) from 322 rock pigeons. The overall prevalence of infestation was 78.9%, 52.5%, and 23.3% for C. compar, C. columbae, and H. lata, respectively. Coloceras tovornikae was not discovered until 2003, after which its prevalence was 39.9% on 114 pigeons. We collected 1116 lice of five species (P. zenaidurae, C. baculoides, C. macrourae, H. paladinella, and B. columbae) from 117 mourning doves. Physconelloides zenaidurae was encountered most often (prevalence was 36.7%), while the prevalence of the other four species was 26.3%, 18.4%, 3.5%, and 2.6%, respectively.

scholarly journals Using Fecal Glucocorticoids for Stress Assessment in Mourning Doves

The Condor ◽  
2003 ◽  
Vol 105 (4) ◽  
pp. 696-706 ◽  
Author(s):  
Brian E. Washburn ◽  
Joshua J. Millspaugh ◽  
John H. Schulz ◽  
Susan B. Jones ◽  
Tony Mong
Keyword(s):  
Body Mass ◽  
Mourning Dove ◽  
Zenaida Macroura ◽  
Acth Challenge ◽  
Fecal Glucocorticoid Metabolites ◽  
In Captivity ◽  
Mourning Doves ◽  
Para Determinar ◽  
Fecal Glucocorticoids ◽  
Fecal Glucocorticoid

Abstract Fecal glucocorticoid assays provide a potentially useful, noninvasive means to study physiological responses of wildlife to various stressors. The objective of our study was to validate a method for measuring glucocorticoid metabolites in Mourning Dove (Zenaida macroura) feces. We validated the assay using standard procedures (e.g., parallelism, recovery of exogenous corticosterone) to demonstrate that the assay accurately and precisely measured glucocorticoid metabolites in Mourning Dove fecal extracts. We conducted adrenocorticotropin (ACTH) challenge experiments to validate the assay's ability to determine biologically important changes in fecal glucocorticoids. Fecal glucocorticoid levels increased significantly approximately 2–3 hr after administration of ACTH at 50 IU per kg body mass to wild Mourning Doves held in captivity. In contrast, fecal glucocorticoid metabolites did not increase in control birds, birds that received saline injections, or a lower dose of ACTH (1 IU per kg body mass). Variation in overall fecal glucocorticoid metabolite levels may have been influenced by season and the length of time birds were held in captivity. Noninvasive fecal glucocorticoid metabolite analyses, in combination with demographic information, may have considerable utility for monitoring the effects of natural and anthropogenic disturbances on Mourning Dove populations. Uso de Glucocorticoides Fecales Para Evaluar el Estrés en Zenaida macroura Resumen. Las evaluaciones de glucocorticoides fecales representan un medio no invasor potencialmente útil para estudiar las respuestas fisiológicas de los animales silvestres ante agentes causantes de estrés. El objetivo de nuestro estudio fue validar un método para medir metabolitos glucocorticoides en heces de palomas Zenaida macroura. Validamos el método mediante procedimientos estándar (e.g., paralelismo, recuperación de corticosterona exógena) para demostrar que éste mide con exactitud y precisión los metabolitos glucocorticoides en extractos fecales de Z. macroura. Realizamos experimentos de desafío con adrenocorticotropina (ACTH) para validar la habilidad que tenía el método para determinar cambios biológicamente importantes en los glucocorticoides fecales. Los niveles de glucocorticoides fecales aumentaron de forma significativa aproximadamente 2–3 hr después de la administración de ACTH a 50 IU por kg de peso corporal a palomas silvestres mantenidas en cautiverio. En contraste, los metabolitos glucocorticoides fecales no aumentaron en aves control, ni en aves que recibieron inyecciones salinas o una menor dosis de ACTH (1 IU por kg de peso corporal). La variación en los niveles generales de metabolitos glucocorticoides fecales podría haber sido influenciada por la estación y la longitud del período de tiempo en que las aves fueron mantenidas en cautiverio. Los análisis no invasores de metabolitos glucocorticoides, en combinación con información demográfica, podrían ser de considerable utilidad para monitorear los efectos de los disturbios naturales y antropogénicos sobre las poblaciones de Z. macroura.

scholarly journals New records of theropods from the latest Cretaceous of New Jersey and the Maastrichtian Appalachian fauna

2019 ◽  
Vol 6 (11) ◽  
pp. 191206 ◽  
Author(s):  
Chase Doran Brownstein
Keyword(s):  
New Jersey ◽  
North America ◽  
Fossil Record ◽  
New Records ◽  
The Other ◽  
Eastern North America ◽  
Western North America ◽  
Northeastern North America ◽  
Terrestrial Vertebrate ◽  
Postcranial Remains

The faunal changes that occurred in the few million years before the Cretaceous–Palaeogene extinction are of much interest to vertebrate palaeontologists. Western North America preserves arguably the best fossil record from this time, whereas terrestrial vertebrate fossils from the eastern portion of the continent are usually limited to isolated, eroded postcranial remains. Examination of fragmentary specimens from the American east, which was isolated for the majority of the Cretaceous as the landmass Appalachia, is nonetheless important for better understanding dinosaur diversity at the end of the Mesozoic. Here, I report on two theropod teeth from the Mount Laurel Formation, a lower-middle Maastrichtian unit from northeastern North America. One of these preserves in detail the structure of the outer enamel and resembles the dentition of the tyrannosauroid Dryptosaurus aquilunguis among latest Cretaceous forms in being heavily mediolaterally compressed and showing many moderately developed enamel crenulations. Along with previously reported tyrannosauroid material from the Mt Laurel and overlying Cretaceous units, this fossil supports the presence of non-tyrannosaurid tyrannosauroids in the Campanian–Maastrichtian of eastern North America and provides evidence for the hypothesis that the area was still home to relictual vertebrates through the end of the Mesozoic. The other tooth is assignable to a dromaeosaurid and represents both the youngest occurrence of a non-avian maniraptoran in eastern North America and the first from the Maastrichtian reported east of the Mississippi. This tooth, which belonged to a 3–4 m dromaeosaurid based on size comparisons with the teeth of taxa for which skeletons are known, increases the diversity of the Maastrichtian dinosaur fauna of Appalachia. Along with previously reported dromaeosaurid teeth, the Mt Laurel specimen supports the presence of mid-sized to large dromaeosaurids in eastern North America throughout the Cretaceous.

A preliminary survey for avian pathogens in Columbiform birds on Socorro Island, Mexico.

2011 ◽  
Vol 17 (1) ◽  
pp. 11 ◽  
Author(s):  
Saturnino Yanga ◽  
Juan E Martinez-Gomez ◽  
Ravinder N M Sehgal ◽  
Patricia Escalante ◽  
Frank Carlos Camacho ◽  
...  
Keyword(s):  
Dna Amplification ◽  
Cloacal Swab ◽  
Mourning Dove ◽  
Tissue Samples ◽  
Zenaida Macroura ◽  
Trichomonas Gallinae ◽  
Socorro Island ◽  
Disease Risks ◽  
Mourning Doves ◽  
Avian Pox

To assess the potential disease risks posed by resident Columbiformes to the reintroduction of the Socorro Dove Zenaida graysoni to Socorro Island, Mexico, the endemic Socorro Ground Dove Columbina passerina socorrensis and the recently arrived Mourning Dove Zenaida macroura, were screened for ecto- and endoparsites, haemosporidia, Trichomonas gallinae, Chlamydophila psittaci and avian pox. All of the Mourning Doves and Socorro Ground Doves sampled appeared healthy upon capture. We detected Haemoproteus spp. in 88% of Mourning Dove and 30% of Socorro Ground Dove samples using microscopy. Two polymerase chain reaction (PCR) DNA amplification methods detected either Haemoproteus spp. or Plasmodium spp. Pooling results from both tests yielded positives in 100% of the Mourning Doves and 52% of the Socorro Ground Doves. A nested PCR detected Leucocytozoon spp. in 94% of the Mourning Doves and 61% of the Socorro Ground Doves sampled. Thus, at least two genera of haemosporidia are present in columbids of Socorro Island. Microscopy for T. gallinae yielded positives in 33% of Mourning Dove and 30% of Socorro Ground Dove samples. C. psittaci was not detected using PCR on either cloacal swab samples or tissue samples from tested Mourning Doves or Socorro Ground Doves. Necropsies revealed neither lesions indicative of the wet form of avian pox, nor internal lesions associated with trichomoniasis. These results suggest that Socorro Doves selected for reintroduction should be screened carefully to evaluate potential immunological challenges by native haemosporidians and to avoid introduction of other diseases apparently absent from native Columbiformes on Socorro Island.

Sex ratios of hatchling Mourning Doves

1987 ◽  
Vol 65 (4) ◽  
pp. 871-874 ◽  
Author(s):  
Suzanne R. Edmunds ◽  
C. Davison Ankney
Keyword(s):  
Sex Ratio ◽  
Breeding Season ◽  
Seasonal Changes ◽  
Egg Size ◽  
Mourning Dove ◽  
Seasonal Effect ◽  
Zenaida Macroura ◽  
Family Types ◽  
Offspring Sex ◽  
Mourning Doves

The sex of 306 Mourning Dove (Zenaida macroura) chicks from 153 two-egg clutches laid during March–August 1984 was determined by gonadal inspection. Sex of offspring was unrelated to egg sequence over the entire breeding season. There was, however, a seasonal effect on the sex versus egg sequence pattern, particularly in broods with both sexes: during the middle of the breeding season males predominated in first eggs and females in second eggs but this pattern was reversed late in the season. All other comparisons, i.e., overall sex ratio, seasonal changes in sex ratio, binomial distribution of family types, and the relation between egg size and offspring sex, were nonsignificant.

The helminths of wolves and coyotes from the forested regions of Alberta

1968 ◽  
Vol 46 (6) ◽  
pp. 1193-1204 ◽  
Author(s):  
John C. Holmes ◽  
Ronald Podesta
Keyword(s):  
North America ◽  
Food Habits ◽  
National Park ◽  
New Records ◽  
Helminth Fauna ◽  
The Other ◽  
Taenia Hydatigena ◽  
Banff National Park ◽  
Capillaria Aerophila ◽  
Toxascaris Leonina

Ninety-eight wolves and 75 coyotes from the forested regions of Alberta were examined for helminths. Fourteen species (2 trematodes, 8 cestodes, and 4 nematodes) were recovered from wolves, with a mean of 2.6 and a maximum of 6 species per wolf; 18 species (3 trematodes, 8 cestodes, and 7 nematodes) were recovered from coyotes, with a mean of 2.0 and a maximum of 6 species per coyote. Helminths common in wolves were Taenia hydatigena (79% of the wolves infected), Echinococcus granulosus (72%), Taenia krabbei (52%), Toxascaris leonina (14%), and Taenia pisiformis (13%), Toxascaris leonina (52%), Alaria americana (33%), Taenia pisiformis (31%), Uncinaria stenocephala (16%), and Filaroides osleri (15%) were common in coyotes. Metorchis conjunctus, Taenia omissa, and T. taeniaeformis appear to be new records for wolves and M. conjunctus, Taenia twitchelli, Diphyllobothrium sp., and Capillaria aerophila appear to be new for coyotes.High indexes of similarity (and comparable indexes of diversity) suggest that the helminth faunas of wolves in various regions of North America are basically similar. This similarity is probably due to similar food habits of wolves from various regions.The helminth fauna of coyotes appears to vary extensively in diversity and in species between the regions studied. The fauna from the coyotes from the area around Lac la Biche, Alberta, differed markedly from that of the other samples, with a generally richer fauna of different species, more equitably distributed. The helminths, particularly the cestodes, from coyotes from Minnesota and from Banff National Park were as similar to those of wolves as they were to those of coyotes from other areas. These features may be due to the food habits of the host coyotes.

Influence of temperature and other factors on the daily roosting times of Mourning Doves in winter

1994 ◽  
Vol 72 (7) ◽  
pp. 1287-1290 ◽  
Author(s):  
Denis R. Doucette ◽  
Stéphan G. Reebs
Keyword(s):  
Regression Analysis ◽  
New Brunswick ◽  
Mourning Dove ◽  
Zenaida Macroura ◽  
Influence Of Temperature ◽  
Reduce Heat Loss ◽  
Recent Addition ◽  
Mourning Doves ◽  
Unusual Finding

From November 1992 to February 1993, observations were made during 30 departures and 30 arrivals at a Mourning Dove (Zenaida macroura) roost in Moncton, New Brunswick, Canada. Our objective was to identify the effect of cold on the timing of roosting flights in this species, a recent addition to the local wintering fauna. The effect of other environmental factors was taken into account by including them, along with temperature, in a multiple regression analysis. Doves left the roost later relative to sunrise (i) on longer days, (ii) on cloudy mornings, (iii) when fewer birds were using the roosts, (iv) on colder mornings, and (v) when winds were high. They returned to the roost later relative to sunset (i) on colder evenings and (ii) in clear weather. Late arrivals on colder days represent an unusual finding. Anatomical and behavioural considerations suggest that Mourning Doves cannot reduce heat loss as substantially as other species; therefore, late arrivals on cold evenings may reflect the more important role of energy gain through extended foraging required to survive the long winter night.

Notes on Larentiinae—New Records and Corrections (Lepidoptera: Geometridae)

1958 ◽  
Vol 90 (1) ◽  
pp. 42-43 ◽  
Author(s):  
Douglas C. Ferguson
Keyword(s):  
North America ◽  
New Records ◽  
The Other ◽  
Early Literature ◽  
New Occurrences

Recent studies in the Larentiinae revealed two new occurrences for North America, one apparently indigenous and the other introduced. A third species discussed below has stood in the American lists for over fifty years on the basis of a misdetermination, and should be removed.Lygris populata L.The early literature contains many references to this species in North America but it is almost certain that all such records can be attributed to the superficially similar Nearctic species, Lygris propulsata Wlk. During current investigations in the genus Dysstroma, I encountered Alaskan specimens that proved to be genuine Lygris populata. These specimens, in the collections of three different museums where they were misdetermined as, or mixed in with, material of Dysstroma glacialis Hlst., are as follows:

Sign in / Sign up

Export Citation Format

Share Document