Epidemiology of lobomycosis-like disease in bottlenose dolphins Tursiops spp. from South America and southern Africa

Bressem, Marie‐Françoise Van; Simões-Lopes, Paulo César; Félix, Fernando; Kiszka, Jérémy J.; Daura‐Jorge, Fábio G.; Ávila, Isabel Cristina; Secchi, Eduardo R.; Flach, Leonardo; Fruet, Pedro F.; Toit, Kate Du; Ott, Paulo Henrique; Elwen, Simon Harvey; Giacomo, Amanda Baron Di; Wagner, Jeanne; Banks, Aaron; Waerebeek, Koen Van

doi:10.3354/dao02932

“…The integument was inspected macroscopically for any cutaneous conditions, such as tattoo skin disease (TSD) and lobomycosis-like disease (e.g. Van Bressem et al, 2015). No biological sampling was attempted as traders do not allow it, because all dolphin parts are utilized or commercialized.…”

Section: Methodsmentioning

confidence: 99%

The status and trends of small cetacean landings at Dixcove artisanal fishing port, western Ghana

Ofori-Danson

¹

,

Debrah

²

,

Waerebeek

³

2019

Preprint

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One of the largest documented takes of small cetaceans in western Africa occurs in Western regional coastal waters of Ghana. This temporally coincided with steadily decreasing catches of finfish, especially small pelagics (sardinellas, anchovies, mackerel) over the past decades, attributed to both climate change and indiscriminate exploitation methods. Dixcove, a key fishing port for cetacean landings was surveyed during 96 days between 12 September -17 December 2018. Our goal was to update insights from our earlier surveys, especially on catch rates, catch per unit effort and species composition. A total of 57 delphinids of 10 species were observed landed: Stenella attenuata (28.1%), Stenella clymene (17.5%), Lagenodelphis hosei (10.5%), Steno bredanensis (10.5%), unidentified stenellids (8.8%), Grampus griseus (3.5%), Delphinus sp. (3.5%), Pseudorca crassidens (3.5%) and single specimens of Tursiops truncatus, Stenella longirostris and Stenella frontalis. The observed cetacean catch per diem (cpd =0.59) at Dixcove was low compared to earlier rates for this port (e.g. cpd =2.82, in 2013-2014). However, fishing effort, measured as the number of canoes landing per diem (range 0-25; mean= 8.82 ± 6.05; n=22) was also reduced. Poor fish catches forced many canoes to remain in port. The prevalence in landings of common bottlenose dolphins and common dolphins has significantly decreased in the period 2000-2018. The prevalence of Fraser's dolphins and false killer whales increased. Indications are that a higher proportion of cetacean carcasses may be utilised offshore as shark bait. Hooks baited with cetacean parts are deployed in auxiliary longlines set longside large-mesh drift gillnets with a shark aggregating purpose, a first report in Africa. Shore-based incidental sightings of humpback whales suggest the potential for small scale whale-watching ecotourism in Ghanaian coastal waters, as pertains in the nearby waters of the Republic of Benin.

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“…The integument was inspected macroscopically for any cutaneous conditions, such as tattoo skin disease (TSD) and lobomycosis-like disease (e.g. Van Bressem et al, 2015). No biological sampling was attempted as traders do not allow it, because all dolphin parts are utilized or commercialized.…”

Section: Methodsmentioning

confidence: 99%

The status and trends of small cetacean landings at Dixcove artisanal fishing port, western Ghana

Ofori-Danson

¹

,

Debrah

²

,

Waerebeek

³

2019

Preprint

0

View full text Add to dashboard Cite

One of the largest documented takes of small cetaceans in western Africa occurs in Western regional coastal waters of Ghana. This temporally coincided with steadily decreasing catches of finfish, especially small pelagics (sardinellas, anchovies, mackerel) over the past decades, attributed to both climate change and indiscriminate exploitation methods. Dixcove, a key fishing port for cetacean landings was surveyed during 96 days between 12 September -17 December 2018. Our goal was to update insights from our earlier surveys, especially on catch rates, catch per unit effort and species composition. A total of 57 delphinids of 10 species were observed landed: Stenella attenuata (28.1%), Stenella clymene (17.5%), Lagenodelphis hosei (10.5%), Steno bredanensis (10.5%), unidentified stenellids (8.8%), Grampus griseus (3.5%), Delphinus sp. (3.5%), Pseudorca crassidens (3.5%) and single specimens of Tursiops truncatus, Stenella longirostris and Stenella frontalis. The observed cetacean catch per diem (cpd =0.59) at Dixcove was low compared to earlier rates for this port (e.g. cpd =2.82, in 2013-2014). However, fishing effort, measured as the number of canoes landing per diem (range 0-25; mean= 8.82 ± 6.05; n=22) was also reduced. Poor fish catches forced many canoes to remain in port. The prevalence in landings of common bottlenose dolphins and common dolphins has significantly decreased in the period 2000-2018. The prevalence of Fraser's dolphins and false killer whales increased. Indications are that a higher proportion of cetacean carcasses may be utilised offshore as shark bait. Hooks baited with cetacean parts are deployed in auxiliary longlines set longside large-mesh drift gillnets with a shark aggregating purpose, a first report in Africa. Shore-based incidental sightings of humpback whales suggest the potential for small scale whale-watching ecotourism in Ghanaian coastal waters, as pertains in the nearby waters of the Republic of Benin.

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“…4,5 CASO CLÍNICO Doente do sexo masculino, 58 anos, de raça negra, agricultor, proveniente de Iranduba, município da região…”

Section: 2unclassified

“…3 Um novo cenário epidemiológico está vinculado em algumas espécies de golfinhos. 4,5 CASO CLÍNICO Doente do sexo masculino, 58 anos, de raça negra, agricultor, proveniente de Iranduba, município da região metropolitana de Manaus, em bom estado geral, apresentando há cerca de 28 anos lesões exofíticas na perna esquerda ( Fig.s 1 e 2).…”

Section: Introductionunclassified

Lobomicose

Filho

¹

,

Grana

²

,

Macedo

³

et al. 2018

SPDV

0

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RESUMO -Lobomicose ou doença de Jorge Lobo é uma infecção crónica e granulomatosa causada pela implantação traumática do fungo Lacazia loboi. Esta doença acomete pele e tecido celular subcutâneo. Trata-se de uma dermatose infecciosa típica de regiões tropicais e subtropicais que acomete frequentemente homens adultos ativos nas áreas florestais, além de ter sido diagnosticada em golfinhos. No geral afecta áreas expostas da pele, tais como o pavilhão auricular, os membros superiores e inferiores. Lesões queiloidiformes constituem a manifestação clínica mais comum. A remoção cirúrgica é o procedimento terapêutico de escolha nos casos iniciais, enquanto itraconazol e clofazimina, isolados ou em associação, podem ser utilizados nos casos disseminados. PALAVRAS-CHAVE -Brasil; Dermatomicoses; Lacazia; Lobomicose; Pele. Lobomycosis ABSTRACT -Lobomycosis or Jorge Lobo's disease is a chronic granulomatous infection, caused by the traumatic implantation of the fungus Lacazia loboi, that affects the skin and subcutis. This dermatosis is typical of tropical and subtropical regions and affects mainly active adult males working in the forest INTRODUÇÃOLobomicose, mais recentemente apelidada de Lacaziose, é uma infecção fúngica causada pela levedura Lacazia loboi, previamente chamada Loboa loboi. Esta dermatose, típica das áreas tropicais e sub-tropicais, acomete principalmente a pele exposta, poupando as mucosas. As lesões queloidiformes são a apresentação clínica mais comum. Em termos histológicos, observa-se reação inflamatória granulomatosa crônica que predomina na derme. 1,2Relatos limitados de casos demonstraram que a lobomicose apresenta distribuição em áreas endêmicas na América Latina, tendo uma incidência maior na Amazónia brasileira.2 Na realidade aqui ocorrem a maioria dos diagnósticos, 1,2 mas recentemente foram relatados 15 casos na Índia.3 Um novo cenário epidemiológico está vinculado em algumas espécies de golfinhos. 4,5 CASO CLÍNICO Doente do sexo masculino, 58 anos, de raça negra, agricultor, proveniente de Iranduba, município da região

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Epidemiology of lobomycosis-like disease in bottlenose dolphins Tursiops spp. from South America and southern Africa

Cited by 29 publications

References 67 publications

The status and trends of small cetacean landings at Dixcove artisanal fishing port, western Ghana

The status and trends of small cetacean landings at Dixcove artisanal fishing port, western Ghana

The status and trends of small cetacean landings at Dixcove artisanal fishing port, western Ghana

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