A Survey of Hemoparasite Infections in Free-Ranging Mammals and Reptiles in French Guiana

2000 ◽  
Vol 86 (5) ◽  
pp. 1035
Author(s):  
Benoit de Thoisy ◽  
Jean-Claude Michel ◽  
Ingrun Vogel ◽  
Jean-Christophe Vie
Keyword(s):  
French Guiana ◽  
Free Ranging

Health evaluation of translocated free-ranging primates in French Guiana

2001 ◽  
Vol 54 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Benoît de Thoisy ◽  
Ingrun Vogel ◽  
Jean-Marc Reynes ◽  
Jean-François Pouliquen ◽  
Bernard Carme ◽  
...  
Keyword(s):  
French Guiana ◽  
Health Evaluation ◽  
Free Ranging

scholarly journals Increased rates of dispersal of free-ranging cane toads (Rhinella marina) during their global invasion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Richard Shine ◽  
Ross A. Alford ◽  
Ryan Blennerhasset ◽  
Gregory P. Brown ◽  
Jayna L. DeVore ◽  
...  
Keyword(s):  
French Guiana ◽  
Native Range ◽  
Rhinella Marina ◽  
Range Edge ◽  
Population Spread ◽  
Eastern Australia ◽  
Tropical Australia ◽  
Free Ranging ◽  
Global Invasion ◽  
Daily Changes

AbstractInvasions often accelerate through time, as dispersal-enhancing traits accumulate at the expanding range edge. How does the dispersal behaviour of individual organisms shift to increase rates of population spread? We collate data from 44 radio-tracking studies (in total, of 650 animals) of cane toads (Rhinella marina) to quantify distances moved per day, and the frequency of displacement in their native range (French Guiana) and two invaded areas (Hawai’i and Australia). We show that toads in their native-range, Hawai’i and eastern Australia are relatively sedentary, while toads dispersing across tropical Australia increased their daily distances travelled from 20 to 200 m per day. That increase reflects an increasing propensity to change diurnal retreat sites every day, as well as to move further during each nocturnal displacement. Daily changes in retreat site evolved earlier than did changes in distances moved per night, indicating a breakdown in philopatry before other movement behaviours were optimised to maximise dispersal.

A SURVEY OF HEMOPARASITE INFECTIONS IN FREE-RANGING MAMMALS AND REPTILES IN FRENCH GUIANA

2000 ◽  
Vol 86 (5) ◽  
pp. 1035-1040 ◽  
Author(s):  
Benoît de Thoisy ◽  
Jean-Claude Michel ◽  
Ingrun Vogel ◽  
Jean-Christophe Vié
Keyword(s):  
French Guiana ◽  
Free Ranging

HEMATOLOGICAL AND SERUM CHEMISTRY PROFILES OF FREE-RANGING SOUTHERN TWO-TOED SLOTHS IN FRENCH GUIANA

1999 ◽  
Vol 35 (3) ◽  
pp. 531-535 ◽  
Author(s):  
Ingrun Vogel ◽  
Jean-Christophe Vié ◽  
Benoît de Thoisy ◽  
Brigitte Moreau
Keyword(s):  
French Guiana ◽  
Serum Chemistry ◽  
Free Ranging

HEMATOLOGIC AND SERUM BIOCHEMISTRY VALUES IN TWO SPECIES OF FREE-RANGING PORCUPINES (COENDOU PREHENSILIS, COENDOU MELANURUS) IN FRENCH GUIANA

2003 ◽  
Vol 34 (2) ◽  
pp. 159-162 ◽  
Author(s):  
Brigitte Moreau ◽  
J. Christophe Vié ◽  
Philippe Cotellon ◽  
Ingrund De Thoisy ◽  
Annie Motard ◽  
...  
Keyword(s):  
French Guiana ◽  
Serum Biochemistry ◽  
Free Ranging

Serologic Survey ofToxoplasma gondiiin Noncarnivorous Free-Ranging Neotropical Mammals in French Guiana

2002 ◽  
Vol 2 (1) ◽  
pp. 11-17 ◽  
Author(s):  
B. Carme ◽  
C. Aznar ◽  
A. Motard ◽  
M. Demar ◽  
B. de Thoisy
Keyword(s):  
French Guiana ◽  
Neotropical Mammals ◽  
Serologic Survey ◽  
Free Ranging

scholarly journals Novel Gamma-1 Herpesviruses Identified in Free-Ranging New World Monkeys (Golden-Handed Tamarin [Saguinus midas], Squirrel Monkey [Saimiri sciureus], and White-Faced Saki [Pithecia pithecia]) in French Guiana

2003 ◽  
Vol 77 (16) ◽  
pp. 9099-9105 ◽  
Author(s):  
Benoit de Thoisy ◽  
Jean-François Pouliquen ◽  
Vincent Lacoste ◽  
Antoine Gessain ◽  
Mirdad Kazanji
Keyword(s):  
French Guiana ◽  
New World ◽  
Saimiri Sciureus ◽  
New World Monkeys ◽  
Barr Virus ◽  
Pithecia Pithecia ◽  
In The Wild ◽  
Epstein Barr ◽  
Free Ranging

ABSTRACT The recent finding of a novel Epstein-Barr virus-related lymphocryptovirus (CalHV-3) in a captive colony of common marmoset (Callithrix jacchus) in the United States modifies the view that the host range of lymphocryptovirus is restricted to humans and Old World primates. We investigated the presence of Epstein-Barr virus-related viruses in 79 samples of New World monkeys caught in the wild, including six species of the Cebidae family and one of the Callitrichidae, living in the rain forest of French Guiana. Using a degenerate consensus PCR method for the herpesvirus DNA polymerase gene, we identified three novel lymphocryptoviruses from golden-handed tamarin (Saguinus midas) of the Callitrichidae family and squirrel monkey (Saimiri sciureus) and white-faced saki (Pithecia pithecia) of the Cebidae family. With the CalHV-3 strain, these three novel viruses constitute a well-supported phylogenetic clade in the Lymphocryptovirus genus, which is clearly distinct from the lineage of Old World lymphocryptovirus, hosted by catarrhine monkeys and humans. In tamarins, the prevalence of the novel lymphocryptovirus was more than 50%, indicating that it circulates well in the wild population, perhaps due to specific ecoethological patterns such as confrontations and intergroup migration. The detection and partial molecular characterization of the polymerase gene of three novel Gamma-1-Herpesvirinae from New World monkeys caught in the wild clearly indicate that free-ranging populations of platyrrhine are natural hosts of lymphocryptoviruses. Further characterization of these novel viruses will provide new insight not only into the origin and evolution of Gammaherpesvirinae but also into their pathogenicity.

COMPARISON OF INJECTABLE ANESTHETIC COMBINATIONS IN FREE-RANGING TWO-TOED SLOTHS IN FRENCH GUIANA

1998 ◽  
Vol 34 (3) ◽  
pp. 555-566 ◽  
Author(s):  
Ingrun Vogel ◽  
Benoît de Thoisy ◽  
Jean-Christophe Vié
Keyword(s):  
French Guiana ◽  
Free Ranging

scholarly journals Spatial ecology of cane toads (Rhinella marina) in their native range: a radiotelemetric study from French Guiana

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jayna L. DeVore ◽  
Richard Shine ◽  
Simon Ducatez
Keyword(s):  
Invasive Species ◽  
Body Condition ◽  
Spatial Ecology ◽  
French Guiana ◽  
Source Region ◽  
Behavioural Flexibility ◽  
Native Range ◽  
Environmental Niche ◽  
Rhinella Marina ◽  
Free Ranging

AbstractLike most invasive species, cane toads have attracted less research in their native range than in invaded areas. We radio-tracked 34 free-ranging toads in French Guiana, a source region for most invasive populations, across two coastal and two rainforest sites. Coastal toads generally sheltered in pools of fresh or brackish water but nocturnally foraged on beaches, whereas rainforest toads sheltered in forested habitats, moving into open areas at night. Over five days of monitoring, native toads frequently re-used shelters and moved little between days (means = 10–63 m/site) compared to invasion-front toads from Australia (~ 250 m). Larger toads moved less between days, but displaced in more consistent directions. At night, foraging toads travelled up to 200 m before returning to shelters. Foraging distance was related to body condition at coastal sites, with toads in poorer body condition travelling farther. Rain increased the probability of coastal toads sheltering in the dry habitats where they foraged. Dispersal and rainfall were lower at coastal sites, and the strategies utilized by coastal toads to minimize water loss resembled those of invasive toads in semi-desert habitats. This global invader already exhibits a broad environmental niche and substantial behavioural flexibility within its native range.

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