All Stories

  1. Giant otter behaviour in a mega-hydroelectric reservoir, Central Amazon, Brazil

    Article • Animal Biology, November 2021, Brill

    Dr. Fernando César Weber Rosas

  2. First report on the colpocytology and serum steroid hormone levels of Giant otters Pteronura brasiliensis

    Article • International Zoo Yearbook, October 2020, Wiley

    Dr. Fernando César Weber Rosas

  3. Cutaneous mycobacteriosis in a captive Amazonian manatee Trichechus inunguis

    Article • Diseases of Aquatic Organisms, March 2018, Inter-Research Science Center

    Dr. Fernando César Weber Rosas

  4. Assessment of sexual maturity in captive Amazonian manatees (Trichechus inunguis)

    Article • Marine Mammal Science, August 2017, Wiley

    Dr. Fernando César Weber Rosas

  5. A case study of artificial feeding of an unweaned giant otter (Pteronura brasiliensis) cub

    Article • Latin American Journal of Aquatic Mammals, December 2015, Sociedad Latinoamericana de Especialistas en Mamiferos Acuaticos (SOLAMAC)

    Dr. Fernando César Weber Rosas

  6. Cub biometry, litter size and reproductive period of giant oters (Pteronura brasiliensis) at the Balbina Hydroelectric Reservoir, Amazonas, Brazil

    Article • Latin American Journal of Aquatic Mammals, December 2015, Sociedad Latinoamericana de Especialistas en Mamiferos Acuaticos (SOLAMAC)

    Dr. Fernando César Weber Rosas

  7. Advances in the study of giant otter (Pteronura brasiliensis): ecology, behavior, and conservation: a review

    Article • Latin American Journal of Aquatic Mammals, December 2015, Sociedad Latinoamericana de Especialistas en Mamiferos Acuaticos (SOLAMAC)

    Dr. Fernando César Weber Rosas

  8. Short Note: Sleeping Sites Used by Giant Otters (Pteronura brasiliensis) in the Balbina Hydroelectric Reservoir, Central Brazilian Amazon

    Article • Aquatic Mammals, June 2015, Aquatic Mammals Journal

    Dr. Fernando César Weber Rosas

  9. First record of jaguar predation on giant otter (Pteronura brasiliensis)

    Article • Animal Biology, January 2015, Brill

    Dr. Fernando César Weber Rosas

  10. Seasonal variation in urinary and salivary reproductive hormone levels in Amazonian manatees (Trichechus inunguis)

    Article • Reproduction Fertility and Development, January 2015, CSIRO Publishing

    Dr. Fernando César Weber Rosas

  11. FIRST ATTEMPT TO MONITOR LUTEINIZING HORMONE AND REPRODUCTIVE STEROIDS IN URINE SAMPLES OF THE AMAZONIAN MANATEE (TRICHECHUS INUNGUIS)

    Article • Journal of Zoo and Wildlife Medicine, December 2014, American Association of Zoo Veterinarians

    Dr. Fernando César Weber Rosas

  12. Giant otter population responses to habitat expansion and degradation induced by a mega hydroelectric dam

    Article • Biological Conservation, June 2014, Elsevier

    Professor Carlos A. Peres, Dr. Fernando César Weber Rosas

  13. Feeding Ecology of the Amazonian Manatee (Trichechus inunguis) in the Mamirauá and Amanã Sustainable Development Reserves, Brazil

    Article • Aquatic Mammals, June 2014, Aquatic Mammals Journal

    Dr. Fernando César Weber Rosas

  14. Changes in the blood parameters of the Amazonian manatee (Trichechus inunguis) after long-distance transportation - doi: 10.4025/actascibiolsci.v35i4.20081

    Article • Acta Scientiarum Biological Sciences, December 2013, Universidade Estadual de Maringa

    Dr. Fernando César Weber Rosas

  15. PLANTS WITH TOXIC PRINCIPLES EATEN BY THE AMAZONIAN MANATEE (Trichechus inunguis) (MAMMALIA, SIRENIA)

    Article • Scientific Magazine UAKARI, November 2013, Uakari

    Dr. Fernando César Weber Rosas

  16. Endocrine monitoring of the ovarian cycle in captive female Amazonian manatees (Trichechus inunguis)

    Article • Animal Reproduction Science, November 2013, Elsevier

    Dr. Fernando César Weber Rosas

  17. Genetic diversity and population structure ofSynthesium pontoporiae(Digenea, Brachycladiidae) linked to its definitive host stocks, the endangered Franciscana dolphin,Pontoporia blainvillei(Pontoporiidae) off the coast of Brazil and Argen...

    Article • Journal of Helminthology, September 2013, Cambridge University Press

    Dr. Fernando César Weber Rosas

  18. Feeding ecology of the giant otter (Pteronura brasiliensis) and the Neotropical otter (Lontra longicaudis) in Jaú National Park, Amazon, Brazil

    Article • Journal of Natural History, July 2013, Taylor & Francis

    Dr. Fernando César Weber Rosas

  19. Long-term effects of habitat fragmentation on mating patterns and gene flow of a tropical dry forest tree, Ceiba aesculifolia (Malvaceae: Bombacoideae)

    Article • American Journal of Botany, June 2013, Wiley

    Dr. Fernando César Weber Rosas

  20. Toxoplasmosis in a Guiana dolphin (Sotalia guianensis) from Paraná, Brazil

    Article • Veterinary Parasitology, January 2013, Elsevier

    Professor Antonio Fernandez, Dr. Fernando César Weber Rosas

  21. What do Local People Know About Amazonian Manatees? Traditional Ecological Knowledge of Trichechus inunguis in the Oil Province of Urucu, AM, Brazil

    Article • Natureza & Conservação, January 2013, Elsevier

    Dr. Fernando César Weber Rosas

  22. Short Note: Ingestion of Invertebrates, Seeds, and Plastic by the Amazonian Manatee (Trichechus inunguis) (Mammalia, Sirenia)

    Article • Aquatic Mammals, September 2012, Aquatic Mammals Journal

    Dr. Fernando César Weber Rosas

  23. The Amazonian Manatee

    Article • May 2012, JSTOR

    Dr. Fernando César Weber Rosas

  24. Phylogeography and Demographic History of the Neotropical Otter (Lontra longicaudis)

    Article • Journal of Heredity, May 2012, Oxford University Press (OUP)

    Dr. Fernando César Weber Rosas

  25. Amazonian Manatee Urinalysis: Conservation Applications

    Article • May 2012, IntechOpen

    Dr. Fernando César Weber Rosas

  26. Occurrence of Antibodies toToxoplasma gondiiandLepstospiraspp. in Manatees (Trichechus inunguis) of the Brazilian Amazon

    Article • Journal of Zoo and Wildlife Medicine, March 2012, American Association of Zoo Veterinarians

    Dr. Fernando César Weber Rosas

  27. Gross and microscopic observations on the lingual structure of the franciscana (Pontoporia blainvillei - gervais and d'orbigny, 1844)

    Article • Microscopy Research and Technique, February 2012, Wiley

    Dr. Fernando César Weber Rosas

  28. Conflict between Fishermen and Giant Otters Pteronura brasiliensis in Western Brazilian Amazon

    Article • Biotropica, November 2011, Wiley

    Dr. Fernando César Weber Rosas

  29. Light and Scanning Electron Microscopic Study of the Tongue in the Estuarine Dolphin (Sotalia guianensisvan Bénéden, 1864)

    Article • ZOOLOGICAL SCIENCE, August 2011, Zoological Society of Japan

    Dr. Fernando César Weber Rosas

  30. The implications of turning behaviour performed by Amazonian manatees after release into the wild

    Article • Journal of Ethology, July 2011, Springer Science + Business Media

    Dr. Fernando César Weber Rosas

  31. Short Note: Tagging Giant Otters (Pteronura brasiliensis) (Carnivora, Mustelidae) for Radio-Telemetry Studies

    Article • Aquatic Mammals, June 2011, Aquatic Mammals Journal

    Dr. Fernando César Weber Rosas

  32. Serum biochemical analytes in captive Amazonian manatees (Trichechus inunguis)

    Article • Veterinary Clinical Pathology, February 2011, Wiley

    Dr. Fernando César Weber Rosas

  33. Silver speciation in liver of marine mammals by synchrotron X-ray absorption fine structure and X-ray fluorescence spectroscopies

    Article • Journal of Environmental Monitoring, January 2011, Royal Society of Chemistry

    Professor Takashi Kunito, Dr. Fernando César Weber Rosas

  34. Gross anatomy and histology of giant otter (Pteronura brasiliensis) and neotropical otter (Lontra longicaudis) testes

    Article • Animal Biology, January 2011, Brill

    Dr. Fernando César Weber Rosas

  35. Urinary parameters of Trichechus inunguis (Mammalia, Sirenia): reference values for the Amazonian Manatee

    Article • Brazilian Journal of Biology, August 2010, FapUNIFESP (SciELO)

    Dr. Fernando César Weber Rosas

  36. Helminths of Sotalia guianensis (Cetacea: Delphinidae) from the South and Southeastern Coasts of Brazil

    Article • Journal of Wildlife Diseases, April 2010, Wildlife Disease Association

    Dr. Fernando César Weber Rosas

  37. Feeding habits of giant otters Pteronura brasiliensis (Carnivora: Mustelidae) in the Balbina hydroelectric reservoir, Central Brazilian Amazon

    Article • Zoologia (Curitiba), February 2010, FapUNIFESP (SciELO)

    Dr. Fernando César Weber Rosas

  38. Morphology, morphometry and ultrastructure of the Amazonian manatee (Sirenia: Trichechidae) spermatozoa

    Article • Zoologia (Curitiba), January 2010, FapUNIFESP (SciELO)

    Dr. Fernando César Weber Rosas

  39. Noninvasive Monitoring of Androgens in Male Amazonian Manatee (Trichechus inunguis): Biologic Validation

    Article • Journal of Zoo and Wildlife Medicine, September 2009, American Association of Zoo Veterinarians

    Dr. Fernando César Weber Rosas

  40. Body weight-length relationships in giant otters (Pteronura brasiliensis) (Carnivora, Mustelidae)

    Article • Brazilian Archives of Biology and Technology, June 2009, FapUNIFESP (SciELO)

    Dr. Fernando César Weber Rosas

  41. Seasonality of habitat use, mortality and reproduction of the Vulnerable Antillean manatee Trichechus manatus manatus in the Orinoco River, Colombia: implications for conservation

    Article • Oryx, April 2009, Cambridge University Press

    Dr. Fernando César Weber Rosas

  42. Order Sirenia (Manatees, Dugongs, Sea Cows)

    Article • May 2008, Wiley

    Dr. Fernando César Weber Rosas

  43. Orders Cetacea and Pinnipedia (Whales, Dolphins, Seals, Fur Seals, Sea Lions)

    Article • May 2008, Wiley

    Dr. Fernando César Weber Rosas

  44. Mammals, birds and reptiles in Balbina reservoir, state of Amazonas, Brazil

    Article • Check List, May 2008, Pensoft Publishers

    Dr. Fernando César Weber Rosas

  45. Placentation in the Amazonian manatee ( Trichechus inunguis )

    Article • Reproduction Fertility and Development, January 2008, CSIRO Publishing

    Dr Carlos Eduardo Ambrosio, Dr. Fernando César Weber Rosas

  46. Conservation genetics of the giant otter (Pteronura brasiliensis (Zimmerman, 1780)) (Carnivora, Mustelidae)

    Article • Brazilian Journal of Biology, December 2007, FapUNIFESP (SciELO)

    Dr. Fernando César Weber Rosas

  47. The use of hydroelectric lakes by giant ottersPteronura brasiliensis: Balbina lake in central Amazonia, Brazil

    Article • Oryx, October 2007, Cambridge University Press

    Dr. Fernando César Weber Rosas

  48. Organ weights of Pontoporia blainvillei and Sotalia guianensis (Cetacea: Pontoporiidae and Delphinidae)

    Article • Journal of the Marine Biological Association of the United Kingdom, May 2007, Cambridge University Press

    Dr. Fernando César Weber Rosas

  49. Cytogenetic study of the giant otter Pteronura brasiliensis Zimmermann 1780 (Carnivora, Mustelidae, Lutrinae)

    Article • Genetics and Molecular Biology, January 2007, FapUNIFESP (SciELO)

    Dr. Fernando César Weber Rosas

  50. COMPARATIVE GROWTH ANALYSIS OF TWO POPULATIONS OF PONTOPORIA BLAINVILLEI ON THE BRAZILIAN COAST

    Article • Marine Mammal Science, July 2006, Wiley

    Dr. Fernando César Weber Rosas

  51. Concentration and subcellular distribution of trace elements in liver of small cetaceans incidentally caught along the Brazilian coast

    Article • Marine Pollution Bulletin, October 2004, Elsevier

    Professor Takashi Kunito, Dr. Fernando César Weber Rosas

  52. Contamination by Persistent Organochlorines in Cetaceans Incidentally Caught Along Brazilian Coastal Waters

    Article • Archives of Environmental Contamination and Toxicology, January 2004, Springer Science + Business Media

    Dr. Fernando César Weber Rosas

  53. Notes on giant otter (Pteronura brasiliensis) behavior in the lake of the Balbina hydroelectric power station, Amazonas, Brazil

    Article • Latin American Journal of Aquatic Mammals, December 2003, Sociedad Latinoamericana de Especialistas en Mamiferos Acuaticos (SOLAMAC)

    Dr. Fernando César Weber Rosas

  54. Orofacial morphology and feeding behaviour of the dugong, Amazonian, West African and Antillean manatees (Mammalia: Sirenia): functional morphology of the muscular-vibrissal complex

    Article • Journal of Zoology, March 2003, Wiley

    Dr. Fernando César Weber Rosas

  55. REPRODUCTION OF THE ESTUARINE DOLPHIN (SOTALIA GUIANENSIS) ON THE COAST OF PARANÁ, SOUTHERN BRAZIL

    Article • Journal of Mammalogy, May 2002, Oxford University Press (OUP)

    Dr. Fernando César Weber Rosas

  56. Reproductive parameters of Pontoporia blainvillei (Cetacea, Pontoporiidae), on the coast of São Paulo and Paraná States, Brazil

    Article • Mammalia, January 2002, De Gruyter

    Dr. Fernando César Weber Rosas

  57. Feeding Ecology of the Giant Otter, Pteronura brasiliensis1

    Article • Biotropica, September 1999, Wiley

    Dr. Fernando César Weber Rosas

  58. Biology and conservation of the Giant Otter Pteronura brasiliensis

    Article • Mammal Review, March 1997, Wiley

    Dr. Fernando César Weber Rosas

  59. Nutritional and mercury content of milk of the Amazon river dolpin, Inia geoffrensis

    Article • Comparative Biochemistry and Physiology Part A Physiology, October 1996, Elsevier

    Dr. Fernando César Weber Rosas

  60. Biology, conservation and status of the Amazonian Manatee Trichechus inunguis

    Article • Mammal Review, June 1994, Wiley

    Dr. Fernando César Weber Rosas

  61. Seasonal movements of the South American sea lion (Otaria flavescens, Shaw) off the Rio Grande do Sul coast, Brazil

    Article • Mammalia, January 1994, De Gruyter

    Dr. Fernando César Weber Rosas

  62. Age and Growth of the South American Sea Lion, Otaria flavescens (Shaw, 1800), in Southern Brazil

    Article • Journal of Mammalogy, February 1993, Oxford University Press (OUP)

    Dr. Fernando César Weber Rosas