Dear Colleagues: It is a nice pleasure to share another manuscript with you all. Anyone interested, please, get in touch and I'll promptly send the pdf file. Cheers, Marcos Santos Van Bressem, M-F; Santos, M. C. de O. & Oshima, J.E.F. 2009. Skin diseases in Guiana dolphins (Sotalia guianensis) from the Paranaguá estuary, Brazil: A possible indicator of a compromised marine environment. Marine Environmental Research, 67: 63-68. Abstract: We report on the presence of lobomycosis-like disease (LLD) and nodular skin disease (NSD) in a community of Guiana dolphins (Sotalia guianensis) inhabiting the biologically and chemically contaminated Paranagua estuary (Brazil) and on their absence in the community living in the cleaner Cananeia estuary. Prevalence rates of LLD and NSD were 3.9% and 12.6%, respectively, in 103 photo-identified (PI) dolphins from the Paranagua estuary in the period 2006–2007. Adults and calves were affected. Lobomycosis-like lesions may be extensive and form large plaques. Skin nodules were sometimes ulcerated and associated with cutaneous traumas suggesting that traumatic injuries may play a role in the pathogenesis of this condition. In two adult dolphins, NSD evoked the beginning of LLD. In 1996–2007 none of the 200 PI Cananeia S. guianensis had LLD or NSD, a highly significant difference. Interestingly, these dolphins were reported to harbour relatively low concentrations of organochlorines. LLD and NSD are possibly indicators of environmental changes. -- Dr Marcos César de Oliveira Santos Laboratório de Ecologia de Mamíferos Programa de Pós-Graduação em Biologia: Diversidade e Manejo de Vida Silvestre Universidade do Vale do Rio dos Sinos (UNISINOS), Avenida Unisinos, 950, São Leopoldo, RS, Brasil, 93022-000 E-mail: mcos@unisinos.br Telefone/Phone: 51-3590-1229 & Projeto Atlantis, Laboratório de Biologia da Conservação de Cetáceos PROGRAMA JOVEM PESQUISADOR - FAPESP Programa de Pós-Graduação em Zoologia, Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Campus Rio Claro Av 24-A, 1515, Bela Vista, Rio Claro, SP, Brasil, 13506-900. E-mail: sotalia@rc.unesp.br Endereço Residencial/Home Address: Rua João Alfredo Panitz, 204, apto 602, Centro, São Leopoldo, RS 93010-150 E-mail: sotalia@gmail.com Telefone/Phone: 3037-2128