Zoogeography and taxonomy of Dirofilaria scapiceps (Leidy, 1886) and D. uniformis Price, 1957 (Nematoda: Filarioidea) of lagomorphs in North America

1983 ◽  
Vol 61 (5) ◽  
pp. 1011-1022 ◽  
Author(s):  
Cheryl M. Bartlett
Keyword(s):  
United States ◽  
North America ◽  
Host Record ◽  
Sylvilagus Floridanus ◽  
Eastern United States ◽  
New Host ◽  
New Host Record ◽  
South Central ◽  
Central United States ◽  
Subcutaneous Tissues

Dirofilaria scapiceps (Leidy, 1886) was found in 62% of 404 Lepus americanus, 27% of 89 Sylvilagus floridanus, 13% of 31 Orytolagus cuniculus (domestic), 4% of 26 L. capensis, and none of 15 L. timidus, 2 L. californicus, and 50 L. townsendii collected in various regions of North America. Dirofilaria scapiceps in L. capensis is a new host record. The two species of Dirofilaria, D. scapiceps and D. uniformis Price, 1957, known from lagomorphs are redescribed. Dirofilaria scapiceps occurs predominantly in connective tissue surrounding tendons in the ankle region and rarely in intermuscular fascia near the knee joint of the hind leg; D. uniformis occurs in subcutaneous tissues of the trunk. Both D. scapiceps and D. uniformis are known only from lagomorphs in North America, D. scapiceps from L. americanus, L. capensis, S. floridanus, S. palustris and O. cuniculus and D. uniformis from S. floridanus, S. palustris and O. cuniculus. Dirofilaria scapiceps is present in lagomorphs in Alaska, Canada, eastern United States and Wyoming whereas D. uniformis is known only from lagomorphs in southeastern and south central United States. Dirofilaria uniformis may have evolved, through paedomorphosis, from D. scapiceps.

New definitive host, range extension, and notes on the morphology of Tristriata anatis Belopolskaia, 1953 (Trematoda, Notocotylidae) from southeast Alaska

1969 ◽  
Vol 47 (2) ◽  
pp. 265-266 ◽  
Author(s):  
George W. Frame
Keyword(s):  
North America ◽  
Host Range ◽  
Large Intestine ◽  
Definitive Host ◽  
Host Record ◽  
Species Description ◽  
New Host ◽  
Southeast Alaska ◽  
New Host Record ◽  
Melanitta Perspicillata

Two surf scoters (Melanitta perspicillata L.) from near Juneau, Alaska, were examined; a total of 22 Tristriata anatis Belopolskaia, 1953, were removed from the ceca and large intestine. This is the second reported discovery of T. anatis, the first in North America, and a new host record. The species description is expanded. Morphology and the influence of methods on interpretation of structures are discussed.

scholarly journals First record and new host record of the obligate dulotic ant, Polyergus bicolor (Hymenoptera: Formicidae), in Alberta, Canada

2020 ◽  
Vol 133 (4) ◽  
pp. 309-312
Author(s):  
Christine E. Sosiak ◽  
Mari West ◽  
James R.N. Glasier
Keyword(s):  
United States ◽  
Host Record ◽  
First Record ◽  
Northeastern United States ◽  
Eastern Canada ◽  
New Host ◽  
The Past ◽  
New Host Record ◽  
Formica Podzolica

We describe the discovery of Polyergus bicolor, an obligate slave-making ant species, as a new provincial record in Alberta. This species was previously known mostly from eastern Canada and the northeastern United States and has been sparsely collected: only once in the past 50 years. Polyergus bicolor was discovered parasitizing Formica podzolica, which is also a new host for the species. This discovery marks a significant expansion of both range and host for P. bicolor.

Falcaustra species (Nematoda: Kathlaniidae) parasitic in turtles and frogs in Ontario

1986 ◽  
Vol 64 (1) ◽  
pp. 228-237 ◽  
Author(s):  
M. R. Baker
Keyword(s):  
North America ◽  
Rana Catesbeiana ◽  
Host Record ◽  
Museum Specimens ◽  
Type Specimens ◽  
New Host ◽  
Southern Ontario ◽  
Terrapene Carolina ◽  
New Host Record ◽  
Species Inquirenda

Five Falcaustra species are reported from southern Ontario: F. inglisi (Anderson, 1964) Baker, 1980 from Rana catesbeiana and R. clamitans (new host record) of Algonquin Park; F. chelydrae Harwood, 1932 and F. wardi (Mackin, 1936) from Chelydra serpentina of Guelph; F. affinis (Leidy, 1856) from Chrysemys picta marginata (new host record) of Guelph; and F. catesbeianae Walton, 1929 from Rana catesbeiana of Long Point, Ontario. The last four species have not previously been reported in Canada. They are redescribed based on specimens from Ontario and museum specimens from North America. Examination of type specimens of Spironoura hylae Reiber, Byrd &Parker, 1940 and Spironoura spiculata Reiber, Byrd &Parker, 1940 revealed that they are synonymous with F. affinis. Type specimens of Falcaustra longespiculata Walton, 1927 from Terrapene Carolina of North America are shown to be lost. This species, which may be synonymous with F. affinis, is designated a species inquirenda.

A taxonomic reevaluation of North American Daphnia (Crustacea: Cladocera). II. New species in the Daphnia pulex group from the south-central United States and Mexico

1996 ◽  
Vol 74 (4) ◽  
pp. 632-653 ◽  
Author(s):  
Paul D. N. Hebert ◽  
Terrie L. Finston
Keyword(s):  
United States ◽  
North America ◽  
Interspecific Hybrids ◽  
Daphnia Pulex ◽  
Species Boundaries ◽  
The South ◽  
Additional Species ◽  
Genetic Studies ◽  
South Central ◽  
Central United States

Although the establishment of species boundaries in the genus Daphnia is complicated by the prevalence of interspecific hybrids and by phenotypic plasticity, genetic studies can resolve these complexities. This investigation employed allozyme analyses to critically assess species boundaries in members of the Daphnia pulex group from the south-central United States and Mexico. These studies demonstrated the occurrence of three common Nearctic species (obtusa, pulex, pulicaria), but also revealed the occurrence of three previously unrecognized taxa (cheraphila, pileata, prolata). All of these newly described species have their distributional centroid in this region of North America and are restricted to clay-water habitats. F1 hybrids were detected between three pairs of species (cheraphila × prolata, obtusa × pileata, pulex × pulicaria), but only the latter hybrids were common. The discovery of daphniid taxa endemic to this region of North America contrasts with the results of a broader survey of sites in Canada, and suggests that additional species await description from other unglaciated regions of North America.

scholarly journals Long-Duration Freezing Rain Events over North America: Regional Climatology and Thermodynamic Evolution

2019 ◽  
Vol 34 (3) ◽  
pp. 665-681 ◽  
Author(s):  
Christopher D. McCray ◽  
Eyad H. Atallah ◽  
John R. Gyakum
Keyword(s):  
United States ◽  
North America ◽  
The United States ◽  
Heat Of Fusion ◽  
Freezing Rain ◽  
Cold Air ◽  
South Central ◽  
Long Duration ◽  
Central United States ◽  
Rain Events

Abstract Freezing rain can cause severe impacts, particularly when it persists for many hours. In this paper, we present the climatology of long-duration (6 or more hours) freezing rain events in the United States and Canada from 1979 to 2016. We identify three focus regions from this climatology and examine the archetypal thermodynamic evolution of events in each region using surface and radiosonde observations. Long-duration events occur most frequently in the northeastern United States and southeastern Canada, where freezing rain typically begins as lower-tropospheric warm-air advection develops the warm layer aloft. This warm-air advection and the latent heat of fusion released when rain freezes at the surface erode the cold layer, and freezing rain transitions to rain once the surface temperature reaches 0°C. In the southeastern United States, a larger percentage of events are of long duration than elsewhere in North America. Weak surface cold-air advection and evaporative cooling in the particularly dry onset cold layers there prevent surface temperatures from rising substantially during events. Finally, the south-central United States has a regional maximum in the occurrence of the top 1% of events by duration (18 or more hours), despite the relative rarity of freezing rain there. These events are associated with particularly warm/deep onset warm layers, with persistent low-level cold-air advection maintaining the cold layer. The thermodynamic evolutions we have identified highlight characteristics that are key to supporting persistent freezing rain in each region and may warrant particular attention from forecasters tasked with predicting these events.

Gastrointestinal parasites of the cave salamander, Eurycea lucifuga Rafinesque, from the southeastern United States

1975 ◽  
Vol 53 (1) ◽  
pp. 52-54 ◽  
Author(s):  
William G. Dyer ◽  
Stewart B. Peck
Keyword(s):  
United States ◽  
West Virginia ◽  
Southeastern United States ◽  
Host Record ◽  
Gastrointestinal Parasites ◽  
New Host ◽  
New Host Record

The gastrointestinal tracts of 255 cave salamanders, Eurycea lucifuga Rafinesque, from Alabama, Georgia, Illinois, Kentucky. Missouri, Tennessee, Virginia, and West Virginia were examined for parasites. Parasites recovered from 114 (44.7%) salamanders included: Prolozoa—Haptophyra gigantea Maupas, 1879; Trematoda—Brachycoelium sp.; *Cainocreadium pseudotritoni (Rankin, 1937) Yamaguti, 1958; Cestoda—*Batrachotaenia cryptobranchi (La Rue, 1914) Freze, 1965; Nematoda—*Capillaria inequalis Walton, 1935; Cosmocercoides dukae (Hull, 1928) Wilkie, 1930; *Omeia papillocauda Rankin, 1937; *Oswaldocruzia pipiens Walton, 1929; *Rhabdias sp.; *Thelandros magnavulvaris (Rankin, 1937) Schad, 1960; and spirurid cysts. An asterisk (*) preceding the parasite name indicates a new host record.

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