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Carvalho, Vitor Luz; Oliveira de Meirelles, Ana Carolina; Alves Motta, Monica Regina; Colares Maia, Débora Castelo Branco de Sousa; Moraes Campello, Maria Verônica; Leal Bevilaqua, Claudia Maria
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2009 |
Occurrence of Pulmonicola cochleotrema (syn. Cochleotrema cochleotrema) (Digenea: Opisthotrematidae) in Antillean manatees (Trichechus manatus manatus) in Brazil.
Latin Amer. Jour. Aquat. Mamm. 7(1-2): 47-52. 1 tab. 3 figs. Dec. 2009.
–ABSTRACT: The present work reports the first record of the trematode parasite Pulmonicola cochleotrema in Antillean manatee (Trichechus manatus manatus) in Brazil. Out of 15 necropsied manatees in the State of Ceará, the parasite was found in the nares, trachea and bronchi of four animals (two juvenile males, one juvenile female and one adult female), for a prevalence of 26.7%. The parasites were identified based on morphological features observed in the 38 collected specimens. No pathological manifestations were observed associated with the presence of the parasites in the present study. The prevalence observed in the State of Ceará and the lack of reports of this parasite species in other states of northeastern Brazil may suggest the existence of an isolated population, a higher occurrence of the intermediate host, or differences in the feeding habits of the manatees.
RESUMO: Este trabalho apresenta o primeiro registro do parasito trematóide Pulmonicola cochleotrema, em peixe-boi-marinho (Trichechus manatus manatus) no Brasil. De 15 peixes-bois necropsiados no Estado do Ceará, foram encontrados parasitos nas narinas, traquéiase brônquios de quatro animais (dois machos juvenis e duas fêmeas, sendo uma adulta e uma juvenil), com prevalência de 26.7%. A identificação dos parasitos foi feita com base nas características morfológicas observadas de 38 espécimes coletados. Não foram observados sinais patológicos relacionados com a presença dos parasitos no presente estudo. A prevalência observada para o Estado do Ceará e a ausência de registro deste parasito em peixes-bois-marinhos de outros Estados do Nordeste, pode sugerir a existência de uma população isolada, uma maior abundância de hospedeiros intermediários ou diferenças nos hábitos alimentares dos animais.
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Sidrim, José Júlio Costa; Carvalho, Vitor Luz; Maia, Débora Castelo Branco de Souza Collares; Brilhante, Raimunda Sâmia Nogueira; Meirelles, Ana Carolina Oliveira de; Silva, Cristine Pereira Negrão; Cordeiro, Rossana de Aguiar; Moreira, José Luciano Bezerra; Bandeira, Tereza de Jesus Pinheiro Gomes; Rocha, Marcos Fábio Gadelha
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2015 |
Bipolaris hawaiiensis as an emerging cause of cutaneous phaeohyphomycosis in an Antillean manatee Trichechus manatus manatus.
Diseases of Aquatic Organisms 113(1): 69-73. 3 figs. DOI: 10.3354/dao02827. Feb. 10, 2015.
–ABSTRACT: Phaeohyphomycoses are emerging and opportunistic diseases caused by dematiaceous fungi that infect many animal species. This paper describes a case of cutaneous phaeohyphomycosis in an Antillean manatee Trichechus manatus manatus caused by Bipolaris hawaiiensis. Blackish skin lesions were observed in an Antillean manatee calf held captive in Brazil. Direct examination of skin scraping from the affected areas revealed the presence of dematious hyphae. Culture of skin fragments led to the isolation and subsequent identification of B. hawaiiensis as the etiologic agent. Treatment with itraconazole for 14 d was effective. Infections by Bipolaris spp. are rare in animals, and this is the first report of B. hawaiiensis in veterinary medicine.
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Choi-Lima, Katherine F.; Campos, Thais M.; O. De Meirelles, Ana Carolina; Silva, Cristine P. N.; Da Costa, E. B., Thiago; Denis M.; De S. Abessa
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2017 |
Using traditional ecological knowledge to prospect the distribution of the Antillean manatee Trichechus manatus manatus (Sirenia: Trichechidae) in the states of Ceará and Rio Grande do Norte, Brazil.
Pan-American Journal of Aquatic Sciences 12(3): 234-247. 2017
–ABSTRACT – The Antillean manatee occurred along 3,000 km of Brazilian coastline. However, an approximately 1,100 km decrease in its distribution has been registered. This study sought to update the information on the distribution of the Antillean manatee based on traditional ecological knowledge between Ceará and Rio Grande do Norte States, Brazil. A total of 678 interviews were conducted. The question used to define manatee distribution was "When was the last time you saw a manatee in your community?" The responses allowed for the areas to be ranked into: Current, Recent, Historical, and Non-Occurrence. Based on the responses given, we have determined the current species distribution area to be between the municipalities of Aracati and Touros. Results confirmed previous occurrence of manatee along the Rio Grande do Norte coast, but in the municipalities of Fortim and Beberibe in Ceará, the interviewees have not seen the species in recent years. Results suggest that the distribution of this species along the eastern coast of Ceará may be decreasing and becoming fragmented. Thus, it is important to make efforts to confirm species distribution in the region, as well as to estimate population size and to
understand the biology and ecology of the species. Keywords: Mangrove, estuary, conservation evaluation, endangered species, mammals.
Resumo – Utilização do conhecimento ecológico tradicional para identificar a distribuição do peixe-boi das Antilhas Trichechus manatus manatus (Sirenia: Trichechidae) nos estados do Ceará e Rio Grande do Norte, Brasil. O peixe-boi das Antilhas ocorria ao longo de 3.000 km da costa brasileira. No entanto, registou-se uma diminuição de aproximadamente 1.100 km na sua distribuição. Este estudo buscou atualizar as informações sobre a distribuição do peixe-boi com base no etnoconhecimento de pescadores entre o Ceará e o Rio Grande do Norte, Brasil. Foram realizadas 678 entrevistas. A pergunta usada para definir a distribuição do peixe-boi marinho foi "Quando foi a última vez que você viu um peixe-boi na sua comunidade ?" As respostas permitiram que as áreas fossem classificadas em: Atual, Recente, Histórica e Não. (2017), 12(3): 234-247
Traditional knowledge on Brazilian manatee 235.
Ocorrência. Com base nas respostas dadas, a área atual de distribuição da espécie foi estabelecida entre as cidades de Aracati e Touros. Os resultados confirmaram informações sobre a distribuição do peixe-boi ao longo da costa do Rio Grande do Norte, mas nas cidades de Fortim e Beberibe no Ceará, os entrevistados não viram a espécie nos últimos anos. Os resultados sugerem que a distribuição desta espécie ao longo da costa leste do Ceará pode estar diminuindo e se tornando fragmentada. São necessários esforços para confirmar a distribuição da espécie na região, bem como para estimar o tamanho da população e entender a sua biologia
e ecologia.
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Carvalho, Vitor Luz; Groch, K. R.; Catão-Dias, J. L.; Meirelles, Ana Carolina Oliveira de; Silva, Cristine Pereira Negrão; Monteiro, A. N. B.; Díaz-Delgado, J.
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2019 |
Cerebral and cardiac congenital malformations in neonatal West Indian manatees (Trichechus manatus).
Jour. Comparative Pathology 166: 29-34. doi.org/10.1016/j.jcpa.2018.10.173 Jan. 2019 (publ. online Nov. 30, 2018).
–ABSTRACT: Strandings of live new-born West Indian manatees (WIMs; Trichechus manatus) are one of the main challenges for the conservation of this species in Brazil, particularly in the northeastern states. Congenital malformations (CMs) are rare in sirenians. We identified CMs in two of 19 stranded WIMs that were rescued, rehabilitated and subjected to complete pathological examinations in Ceará and Rio Grande do Norte States between 1992 and 2017. In case 1, dilation of the cerebral lateral and fourth ventricles with abundant cerebrospinal fluid (internal hydrocephalus), was diagnosed. Furthermore, this animal developed necrotizing enterocolitis associated with pneumatosis intestinalis and aspiration pneumonia late during rehabilitation. Cardiac malformations in case 2 included: right ventricle hypoplasia with marked stenosis of the tricuspid outflow, high ventricular septal defect, segmental pulmonary artery aneurysm, mitral valve haemocyst and left ventricular hypertrophy. Herein, we provide the first description of a neural tube defect, specifically a developmental internal hydrocephalus, and multiple cardiac congenital anomalies, together with their respective clinicopathological features in manatees. Although the aetiology of the CMs remains unknown in these cases, a genetic basis is plausible given the low genetic variability in this population. These cases add to the body of knowledge on health and disease aspects of manatees and may provide scientific basis for future medical and conservation efforts on neonatal WIMs.
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Lima, Camilla S.; Magalhães, Rafael F.; Marmontel, Miriam; Meirelles, Ana Carolina; Carvalho, Vitor Luz; Lavergne, Anne; Thoisy, Benoit de; Santos, Fabrício R.
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2019 |
A hybrid swarm of manatees along the Guianas coastline, a peculiar environment under the influence of the Amazon River plume.
An. Acad. Bras. Ciênc. 91, supl. 3: e20190325. 3 figs. https://doi.org/10.1590/0001-3765201920190325 Aug. 26, 2019.
–ABSTRACT: The West Indian (Trichechus manatus) and Amazonian (T. inunguis) manatees have a sympatric occurrence at the mouth of the Amazon River. A result of this interspecific encounter is the occurrence of hybrids, which are frequently found along the coasts of Amapá state in Brazil, French Guiana and Guyana. Here we present new genetic evidence indicating the occurrence of a hybrid swarm along the Guianas Shield coastline, which is an interspecific hybrid zone that also separates T. manatus populations located east (Brazil) and west (Caribbean, Gulf of Mexico, Florida and Antilles). In addition, we suggest that this hybrid population occupies a peculiar mangrove-rich environment under strong influence of the Amazon River plume, which requires an independent management and should be considered a special conservation area.
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Bibliography and Index of the Sirenia and Desmostylia 