Helminth Infracommunities of the Frogs Rana catesbeiana and Rana clamitans from Turkey Marsh, Michigan

1991 ◽  
Vol 77 (3) ◽  
pp. 366 ◽  
Author(s):  
Patrick M. Muzzall
Keyword(s):  
Rana Catesbeiana ◽  
Rana Clamitans

The Coccidia (Apicomplexa: Eimeriidae) of frogs from Algonquin Park, with descriptions of two new species

1989 ◽  
Vol 67 (7) ◽  
pp. 1686-1689 ◽  
Author(s):  
G. J. Chen ◽  
S. S. Desser
Keyword(s):  
New Species ◽  
Young Adult ◽  
Rana Catesbeiana ◽  
Polar Granule ◽  
Rana Sylvatica ◽  
Stieda Body ◽  
Rana Clamitans ◽  
Two New Species ◽  
Coccidian Parasites ◽  
Oocyst Residuum

During June and July of 1988, 264 amphibians from Algonquin Park, Ontario, were examined for eimeriid coccidian parasites; the species examined were Rana catesbeiana Shaw, Rana clamitans Latreille, Rana septentrionalis Baird, and Rana sylvatica LeConte. Two distinct types of oocysts were observed in the feces of the frogs. The highest prevalence of infection was recorded from young adult frogs and two new species of Eimeria are described from these animals. Oocysts of Eimeria algonquini n.sp. are spherical, 15.8 (14.5–16.1) μm in diameter, with a thin single-layered wall; micropyle and polar granule absent; large granular oocyst residuum present. Sporocysts banana-shaped, 19.5 (18.7–20.4) × 4.2 (3.8–4.6) μm with prominent granular residuum; Stieda body absent. Oocysts of Eimeria kermiti n.sp. are ovoid, 25.1 (24.7–26.6) × 19.5 (17.6–20.1) μm with thin single-layered wall; polar granule present; micropyle absent; large granular oocyst residuum present. Sporocysts ovoid, 9.9 (9.3–10.4) × 6.6 (6.0–7.1) μm with Stieda body and prominent granular residuum.

Fertilization of green frog (Rana clamitans) eggs in their native jelly by bullfrog (Rana catesbeiana) sperm

1975 ◽  
Vol 193 (3) ◽  
pp. 419-423 ◽  
Author(s):  
Richard P. Elinson
Keyword(s):  
Rana Catesbeiana ◽  
Rana Clamitans ◽  
Green Frog

MERCURY BIOACCUMULATION IN GREEN FROG (RANA CLAMITANS) AND BULLFROG (RANA CATESBEIANA) TADPOLES FROM ACADIA NATIONAL PARK, MAINE, USA

2007 ◽  
Vol 26 (1) ◽  
pp. 118 ◽  
Author(s):  
Michael S. Bank ◽  
Jeff Crocker ◽  
Bruce Connery ◽  
Aria Amirbahman
Keyword(s):  
National Park ◽  
Rana Catesbeiana ◽  
Rana Clamitans ◽  
Green Frog ◽  
Acadia National Park ◽  
Mercury Bioaccumulation

Noisy Neighbors: Acoustic Interference and Vocal Interactions between Two Syntopic Species of Ranid Frogs, Rana clamitans and Rana catesbeiana

2018 ◽  
Vol 52 (2) ◽  
pp. 176 ◽  
Author(s):  
Susan Z. Herrick ◽  
Kentwood D. Wells ◽  
Timothy E. Farkas ◽  
Eric T. Schultz
Keyword(s):  
Rana Catesbeiana ◽  
Rana Clamitans ◽  
Acoustic Interference ◽  
Vocal Interactions

Growth of Tagged Frogs (Rana catesbeiana Shaw and Rana clamitans Daudin) under Natural Conditions

1941 ◽  
Vol 26 (1) ◽  
pp. 201 ◽  
Author(s):  
Edward C. Raney ◽  
William Marcus Ingram
Keyword(s):  
Rana Catesbeiana ◽  
Rana Clamitans ◽  
Natural Conditions

Acidity and associated water chemistry of amphibian habitats in Nova Scotia

1985 ◽  
Vol 63 (1) ◽  
pp. 97-105 ◽  
Author(s):  
J. M. Dale ◽  
B. Freedman ◽  
J. Kerekes
Keyword(s):  
Nova Scotia ◽  
Rana Catesbeiana ◽  
Function Analysis ◽  
Acid Tolerance ◽  
Rana Sylvatica ◽  
Rana Clamitans ◽  
Bufo Americanus ◽  
Amphibian Species ◽  
Species Groups ◽  
Field Transplant

One hundred and fifty-nine field sites consisting of ditches, bogs, marshes, ponds, and lakes in south and central Nova Scotia were surveyed for the presence of the adults, eggs, or larvae of 11 amphibian species. Water samples were analyzed for pH, alkalinity, color, conductivity, Na, K, Mg, Ca, SO4, and Cl. Discriminant function analysis revealed that none of these variables predicted a species' presence. Two three-species groups were found to be significantly associated among themselves, but mutually exclusive of each other. The two groups were (i) Ambystoma maculatum, Hyla crucifer, and Rana sylvatica and (ii) Rana clamitans, Rana catesbeiana, and Rana palustris. Rana sylvatica and A. maculatum were observed breeding successfully in an acidic bog (mean pH 4.1). Rana clamitans adults and larvae were located in the field at pHs as low as 3.5 and 3.9, respectively. Field transplant studies, using eggs of A. maculatum and R. sylvatica (at pH 5.7 and 4.1) and Bufo americanus (at pH 6.3 and 4.1), revealed that R. sylvatica was least sensitive to acidity. There is considerable variation in acid tolerance among the various species of Nova Scotia amphibians. Nevertheless, successful breeding by some species is occurring at very low pHs.

An intraerythrocytic virus and rickettsia of frogs from Algonquin Park, Ontario

1984 ◽  
Vol 62 (8) ◽  
pp. 1521-1524 ◽  
Author(s):  
Sherwin S. Desser ◽  
John R. Barta
Keyword(s):  
Electron Microscope ◽  
Rana Catesbeiana ◽  
Blood Parasites ◽  
Rana Clamitans ◽  
Virus Particles ◽  
Spherical Inclusions ◽  
Sphagnum Bog ◽  
Prokaryotic Microorganisms ◽  
Large Spherical

Two prokaryotic microorganisms were observed in the erythrocytes of frogs in a survey of blood parasites of six species of amphibians from a sphagnum bog adjacent to Lake Sasajewun, Algonquin Park, Ontario. A cytoplasmic virus was observed in 12 of 75 Rana catesbeiana and 1 of 75 Rana septentrionalis. The virus particles were hexagonal in section, measured 300–370 nm in diameter, and occurred in groups that were often surrounded by lamellar arrays of stacked membranes. Large spherical inclusions were seen in the erythrocytes of 2 of 57 Rana clamitans. In the electron microscope these inclusions were found to contain numerous rod-shaped prokaryotes which measured 1–1.7 μm × 200–300 nm. These organisms were ultrastructurally indistinguishable from rickettsiae.

Vesicular system associated with spermiogenesis of bullfrog

1987 ◽  
Vol 45 ◽  
pp. 818-819
Author(s):  
K. C. Liu ◽  
S. F. Tsay
Keyword(s):  
Electron Microscopy ◽  
Microscopic Study ◽  
Electron Microscopic Study ◽  
Reproductive System ◽  
Seminiferous Tubule ◽  
Rana Catesbeiana ◽  
Routine Procedure ◽  
Electron Microscopic ◽  
Twisted Tubules ◽  
Electron Lucent

In the histologic and electron microscopic study of the male reproductive system of bullfrog, Rana catesbeiana, a vesicular system associated with spermiogenesis was observed. It appeared in the lumenal space of the seminiferous tubule (Fig. 1), in the heads of spermatids (Fig. 2), associated with the chromatins of the spermatid (Fig. 4). As deduced from sections, this vesicular system consisted of vesicles of various size or a large group of waving and twisted tubules (Fig. 3), After routine procedure of treatment for electron microscopy, the lumens of both of the vesicles and tubules were electron lucent.In human, vesicles and vesicular system associated with reproductive cell and tissue were reported. In abnormal spermiogenesis, flower-like body, actually vesicles, and giant vesicle associated with the head of spermatid were observed. In both cases the number of vesicle was limited from a single one to a few.

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