Predation on nests of three species of Amazon River turtles (Podocnemis) by underground-foraging army ants (Labidus coecus)

2021 ◽  
Author(s):  
M. da Costa Reis ◽  
J. M. Reintjes ◽  
D. Chen ◽  
S. O’Donnell
Keyword(s):  
Amazon River ◽  
Army Ants ◽  
River Turtles

scholarly journals Hematologycal and blood biochemistry parameters of captive big-headed amazon river turtles, Peltocephalus dumerilianus (Testudines: Podocnemididae)

2021 ◽  
Vol 26 (2) ◽  
pp. 207-213
Author(s):  
Neiana Pereira Anselmo ◽  
Mônica Ferreira de Lima França ◽  
Marcio Quara de Carvalho Santos ◽  
Jackson Pantoja-Lima ◽  
Cleide Karoline Pereira da Silva ◽  
...  
Keyword(s):  
Health Status ◽  
Sexual Dimorphism ◽  
Biochemical Parameters ◽  
Femoral Vein ◽  
Amazon River ◽  
Mean Corpuscular Hemoglobin ◽  
Reference Ranges ◽  
Corpuscular Hemoglobin ◽  
Hematological And Biochemical Parameters ◽  
River Turtles

The determination of hematological values is used to obtain knowledge about the health conditions of animal species. The big-headed Amazon River turtles, (Peltocephalus dumerilianus)are considered one of the least known testudine species concerning their biology and health status. Herein, we determined the hematological and plasma biochemical parameters of 17 (eight males and nine females) adult P. dumerilianusto provide reference interval values for clinically healthy individuals. We collected the blood samples by puncturing the femoral vein using long heparinized hypodermic syringes. Sexual dimorphism for individuals was determined by external observation of the shape of the plastron. The average values obtained for the ten hematological and biochemical parameters analyzed were red blood cell count = 0.32 million µL-1; hematocrit = 20.6 %; hemoglobin = 8.5 g dL-1; mean corpuscular volume = 681.6 fL; mean corpuscular hemoglobin = 267.8 pg; mean corpuscular hemoglobin concentration = 41.9 g dL-1; glucose = 80.6 mg dL-1, total protein = 4.1 g dL-1, triglycerides = 388.9 mg dL-1, and total cholesterol = 79.3 mg dL-1.  Despite the sexual dimorphism evidenced for the species, there was no significant statistical difference between males and females for both hematological and biochemical parameters analyzed herein. Based on these results, the population is considered healthy, with parameter values coinciding with previously reported reference ranges for testudines species in the region. The results obtained in this study can be used for assessing the health status of other Amazonian turtle populations, especially in actions aimed at cultivation strategies, management, and species conservation.

Diet of Amazon river turtles (Podocnemididae): a review of the effects of body size, phylogeny, season and habitat

Zoology ◽  
2017 ◽  
Vol 120 ◽  
pp. 92-100 ◽  
Author(s):  
Carla C. Eisemberg ◽  
Stephen J. Reynolds ◽  
Keith A. Christian ◽  
Richard C. Vogt
Keyword(s):  
Body Size ◽  
Amazon River ◽  
River Turtles

Effects of Community-Based Management on Amazon River Turtles: A Case Study ofPodocnemis sextuberculatain the Lower Amazon Floodplain, Pará, Brazil

2013 ◽  
Vol 12 (1) ◽  
pp. 143-150 ◽  
Author(s):  
Priscila Saikoski Miorando ◽  
George Henrique Rebêlo ◽  
Marina Teófilo Pignati ◽  
Juarez Carlos Brito Pezzuti
Keyword(s):  
Amazon River ◽  
Community Based ◽  
Amazon Floodplain ◽  
River Turtles

scholarly journals Continuing problems for Amazon river turtles

Oryx ◽  
1987 ◽  
Vol 21 (1) ◽  
pp. 25-28 ◽  
Author(s):  
Andrew D. Johns
Keyword(s):  
Economic Development ◽  
Human Population ◽  
Amazon River ◽  
Commercial Species ◽  
Podocnemis Expansa ◽  
History Of ◽  
Wildlife Populations ◽  
Over Exploitation ◽  
River Turtles

Amazon river turtles have a long history of over-exploitation, firstly for oil production, and lately as a luxury food for the expanding human population. In many areas, the populations of the two main commercial species Podocnemis expansa and P. unifilis are now so low that extinction is in sight. In 1985 a WWF-US project aimed at investigating interactions between economic development and wildlife populations conducted a case-study of the exploitation of turtles on the River Tefé in western Brazilian Amazonia.

scholarly journals Association of midazolam with ketamine in giant Amazon river turtles Podocnemis expansa breed in captivity

2012 ◽  
Vol 27 (2) ◽  
pp. 144-147 ◽  
Author(s):  
José Roberto Ferreira Alves-Júnior ◽  
Andréa Cristina Scarpa Bosso ◽  
Mariana Batista Andrade ◽  
Karin Werther ◽  
André Luiz Quagliatto Santos
Keyword(s):  
Heart Rate ◽  
Muscle Relaxation ◽  
Amazon River ◽  
Araguaia River ◽  
In Captivity ◽  
Podocnemis Expansa ◽  
Group 2 ◽  
Prolonged Immobilization ◽  
The Right ◽  
River Turtles

PURPOSE: Evaluate the effects of two anesthetic associations in giant Amazon river turtles (P. expansa). METHODS: Twenty P. expansa, healthy, of both sexes, with weights between 1.0 and 1.5 kg of a commercial breeding facility located in the valley of the Araguaia River, Goiás, Brazil, were divided into two groups ( G1 n = 10 and G2 n = 10). Each group received a protocol being: P1 = midazolam (2 mg/kg IM) and ketamine (20 mg/kg IM) and P2 = midazolam (2 mg/kg IM) and ketamine (60 mg/kg IM), applied on G1 and G2, respectively. The drugs were applied in the left forelimb. The clinical parameters evaluated were: locomotion, muscle relaxation, response to pain stimuli in the right thoracic and pelvic members and heart rate. These assessments were made at time 0 (immediately after injection) and times of 5, 10, 20, 30, 45, 60, 90, 120, 150 and 180 minutes after the injections. RESULTS: Group 2 showed a higher heart rate than G1 and more rapid and prolonged immobilization. CONCLUSION: The sedation scores obtained by these protocols (P1 and P2) were satisfactory, with possible pharmacological contention for collecting biological samples and physical examination in P. expansa.

Reproductive Biology and Sexual Dimorphism of Gymnophthalmus vanzoi (Squamata, Gymnophthalmidae) in a Population South of the Amazon River, Brazil

2020 ◽  
Vol 2020 (15) ◽  
pp. 30
Author(s):  
Maiume Silva-da-Silva ◽  
Danilo Augusto Almeida-Santos ◽  
Síria Ribeiro ◽  
Renato Sousa Recoder ◽  
Alfredo P. Santos
Keyword(s):  
Sexual Dimorphism ◽  
Reproductive Biology ◽  
Amazon River
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