IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Skin disorders of coastal dolphins at Añihué Reserve, Chilean Patagonia: a matter of concern
Sanino, G.P.; Van Bressem, M.-F.; Van Waerebeek, K.; Pozo, N. (2014). Skin disorders of coastal dolphins at Añihué Reserve, Chilean Patagonia: a matter of concern. Bol. Mus. Nac. Hist. Nat. (Chile) 63: 127-157
In: Boletín. Museo Nacional de Historia Natural (Chile). Museo Nacional de Historia Natural: Santiago. ISSN 0027-3910, more
Peer reviewed article  

Available in  Authors 

Keywords
    Cephalorhynchus eutropia Gray, 1846 [WoRMS]; Lagenorhynchus australis (Peale, 1848) [WoRMS]; Marine
Author keywords
    skin diseases, emerging skin anomalies, dolphins, eutrophication, pollution, public health, aquaculture, Patagonia.

Authors  Top 
  • Sanino, G.P.
  • Van Bressem, M.-F.
  • Van Waerebeek, K., more
  • Pozo, N.

Abstract
    Epidemiological characteristics and progression of skin disorders were documented in Peale’s (Lagenorhynchus australis) and Chilean (Cephalorhynchus eutropia) dolphins resident in Añihué Reserve (43.8041ºS; 72.9786ºW) in Chile’s Aysén Region. Since 2004, sea-pen based salmon farms began to surround the Reserve. We analyzed 5,734 frames in a graphic SQLite database obtained during systematic inshore monitoring of cetaceans in 2010-2013, comprising 115 photo-identified L. australis and several unidentified C. eutropia. In 2013, the prevalence of skin disorders peaked in L. australis at 81.7 %, an increase of 30.2 % versus 2011. Morbidity is unknown. Of six cutaneous conditions, 1-4 affected both species: (1) tattoo skin disease with 39.1 % prevalence in L. australis; (2) “pale skin patches”, highly prevalent (74.8 %) in L. australis and characterized by opaque to translucent patches that expanded rapidly, then generally resolved within 10 days and occasionally recurred; (3) “focal skin diseases” were clusters of lesions of variable severity that affected all age categories with a 13.9 % prevalence in L. australis and that led to deep cutaneous ulcers in a C. eutropia; (4) rare “skin lineal anomalies” (4 L. australis, 1 C. eutropia) of variable-length, dark, sometimes reticulated, that may persist for years; (5) a “necrotizing tissue mass” that grew rapidly in one L. australis over a preexisting injury for 40 days before scarring; (6) “ulcerative dermatitis (UDD)”, a condition with hypodermal involvement seen in a cluster of 7 L. australis. Except for TSD, aetiologies of skin disorders remain unknown, however water pollution associated with the expanding salmon farm industry is suspected to have contributed to their emergence.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors