A5068320402- Marine animal studies overview
- Marine and fisheries research
- Coral and Marine Ecosystems Studies
- Ichthyology and Marine Biology
- Fish biology, ecology, and behavior
- Parasite Biology and Host Interactions
- Scarabaeidae Beetle Taxonomy and Biogeography
- Cephalopods and Marine Biology
- Identification and Quantification in Food
- Animal Vocal Communication and Behavior
- Environmental Sustainability and Education
- Mercury impact and mitigation studies
- Underwater Acoustics Research
- Diatoms and Algae Research
- Coastal and Marine Management
- Toxic Organic Pollutants Impact
- Mediterranean and Iberian flora and fauna
- Turtle Biology and Conservation
- Avian ecology and behavior
- Aquaculture disease management and microbiota
- Agricultural and Food Sciences
- Arctic and Antarctic ice dynamics
- Mosquito-borne diseases and control
- Fish Biology and Ecology Studies
- Isotope Analysis in Ecology
Universidade da Região de Joinville
2016-2025
The University of Texas Medical Branch at Galveston
2023
Universidade de São Paulo
2023
Consejo Superior de Investigaciones Científicas
2023
Centro de Investigación en Sanidad Animal
2023
Fundação de Estudos e Pesquisas Aquáticas
2023
Universidade do Estado de Santa Catarina
2023
Universidade Federal de Santa Catarina
2019-2023
Universidade São Francisco
2023
Migration Institute of Australia
2021
Most current bioexposure assessments for UV filters focus on contaminants concentrations in fish from river and lake. To date there is not information available the occurrence of marine mammals. This first study to investigate presence sunscreen agents tissue liver Franciscana dolphin (Pontoporia blainvillei), a species under special measures conservation. Fifty six samples were taken dead individuals accidentally caught or found stranded along Brazilian coastal area (six states). The...
Since 2010, Guiana dolphin morbillivirus (GDMV; family Paramyxoviridae , genus Morbillivirus species ceti syn. Cetacean ) is recognized as the cause of death multiple cetacean along Brazilian coast, including an unusual mortality event in Rio de Janeiro state. Coronaviruses Gammacoronavirus (family Coronaviridae have been previously detected cetaceans northern hemisphere. After emergence severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), responsible for COVID-19 pandemic and with...
Franciscanas are the most endangered dolphins in Southwestern Atlantic. Due to their coastal and estuarine habits, franciscanas suffer from extensive fisheries bycatch, as well habitat loss degradation. Four Franciscana Management Areas (FMA), proposed based on biology, demography, morphology genetic data, were incorporated into management planning delineation of research efforts. We re-evaluated that proposal through analysis control region sequences throughout distribution range (N = 162),...
Abstract Hepatic and pulmonary lesions are common in cetaceans, despite their poorly understood viral etiology. Herpesviruses (HV), adenoviruses (AdV) hepatitis E virus (HEV) emerging agents associated with liver and/or damage mammals. We isolated molecularly tested DNA for HV AdV (n = 218 individuals; 187 108 lung samples) RNA HEV 147 animals; from six cetacean families. All animals stranded or were bycaught Brazil between 2001 2021. Positive-animals analyzed by histopathology. Statistical...
The present study provides information about the diet of sympatric populations small cetaceans in Babitonga Bay estuary. This is first on these species direct sympatry. stomach contents seven Guiana dolphins Sotalia guianensis and eight franciscanas Pontoporia blainvillei were analyzed. prey both was mostly teleost fishes, followed by cephalopods. We identified 13 fishes as part franciscanas, 20 dolphins. Lolliguncula brevis only cephalopod recorded, most important for cetaceans. Stellifer...
The franciscana is endemic to subtropical coastal waters of Brazil, Uruguay, and Argentina, the only living species family Pontoporiidae. It regarded as most endangered cetacean in western South Atlantic. Five management units are recognized (Franciscana Management Areas, FMAs – sensu Secchi et al., 2003a ), with abundance estimates ranging from a few hundred around 15,000 dolphins. Low reproductive potential short life span make this highly susceptible current non-natural removal rates....
Concentrations of Dechlorane (Dec) 603 (0.75 ng/g lipid weight (lw); mean) and Dec 602 (0.38 lw; were quantified in more than 95% the franciscana (Pontoporia blainvillei) dolphin samples, whereas frequency detection decreased to 75% for Plus (DP) (1.53 lw, mean). The presence Chlordene (CP) was also observed (0.13 half samples. On contrary, 604, decachloropentacyclooctadecadiene (aCl10DP), undecachloropentacyclooctadecadiene (aCl11DP) concentrations below limit quantifications all cases. To...
Estimation of visibility bias is critical to accurately compute abundance wild populations. The franciscana, Pontoporia blainvillei, considered the most threatened small cetacean in southwestern Atlantic Ocean. Aerial surveys are effective method estimate this species, but many existing estimates have been unreliable because they lack proper estimation correction factors for bias. In study, helicopter were conducted determine surfacing-diving intervals franciscanas and availability aerial...
Abstract Sea turtles are globally threatened due to short- and long-term exposure anthropogenic activities. Many life-history traits make it difficult study these species in the wild. Stranding events provide invaluable data infer key aspects of sea turtle ecology, such as regional occurrence, health status, mortality rates, potential threats. In this study, we investigate spatial temporal patterns occurrence southwestern Atlantic Ocean based on a systematic, large-scale survey programme...
This study presents the development and validation of a Health Index (HI) to assess overall health stranded marine tetrapods (seabirds, sea turtles, mammals). The HI is based on parameters collected during necropsies histopathological analyses, including body condition, systemic conditions (macroscopic by histopathology), cutaneous injuries, organized lesions, parasitosis, lymphoid depletion, thyroid alterations. was applied data from 6,332 along Brazilian coast. Results showed that...
Pontoporia blainvillei (Gervais & d'Orbigny, 1844) is threatened throughout its distribution. The species can be found year-round in the Babitonga bay estuary (26º 02'-26º 28'S and 48º28'-48º50'W), north coast of state Santa Catarina, Brazil. Boat surveys were conducted order to evaluate abundance density between 2000 2003. Sampling was random stratified, with 46 transects five sub-areas, comprising a total area 160 km². Data collection following linear transect method distance sampling....
Herpesvirus (HV) infections in cetaceans are frequently associated with skin and mucosal lesions. Although HV have been reported worldwide, their occurrence southern Atlantic marine mammals is still poorly understood. We tested skin, oral genital beta-actin PCR-positive samples from 109 free-ranging Brazilian using a universal herpesvirus DNA polymerase PCR. Herpesvirus-positive Guiana dolphin (Sotalia guianensis), dwarf sperm whale (Kogia sima), Bolivian river (Inia boliviensis), lingual...
The toninha, or franciscana, Pontoporia blainvillei (Gervais & D'Orbigny, 1844), is an endemic species of cetacean the southwestern Atlantic Ocean. There little information on occurrence this in its natural environment due to great difficulty sighting it. Systematized and non-systematized observations franciscanas were made from December 1996 through November 2001 at Babitonga Bay, northern coast Santa Catarina State, southern Brazil. small motorboats. A total 79 made, totaling 561...
Abstract Aerial photogrammetry protocols using drones have proved efficient in monitoring free‐living cetaceans. In this work an aerial protocol a drone was applied to estimate morphometric measurements and body condition variation two endangered cetacean species, franciscanas ( Pontoporia blainvillei , n = 122) Guiana dolphin Sotalia guianensis 41). Sampling occurred winter summer Babitonga Bay, southern Brazil. A 115 cm length object used calibrate the scale of at different altitudes....
IntroductionThe species of the genus Sotalia inhabit river and lakesystems Amazonia, lower Orinoco River, andcoastal marine waters from Nicaragua to southern Brazil(Borobia et al., 1991; da Silva Best, 1994; 1996; Carrand Bonde 2000; Flores Silva, 2009). Freshwaterand animals can be differentiated based onskeletal morphology (Monteiro Filho 2002).Recently they were demonstrated separate species,with S. fluviatilis being riverine in theAmazon guianensis found andestuarine environments (Cunha...
Samples from individuals of the populations Sotalia guianensis (Guiana) and Pontoporia blainvillei (Franciscana) dolphins living in Babitonga Bay estuary (26° 28′ S/48° 50′ W), samples a second population P. nearshore area 38′ 41′ were collected analyzed along with their prey between 2000 2006, to determine carbon nitrogen stable isotope ratios verify differences feeding ecology. No found median ð15N values Guiana (15.2‰) Franciscana (15.9‰) Bay, nor (15.0‰) individuals, suggesting no...
Brucella-exposure and infection is increasingly recognized in marine mammals worldwide. To better understand the epidemiology health impacts of Brucella spp. Brazil, molecular (conventional PCR and/or real-time PCR), serological (Rose Bengal Test [RBT], Competitive [c]ELISA, Serum Agglutination [SAT]), pathological, immunohistochemical (IHC) microbiological investigations were conducted samples 129 stranded or by-caught (orders Cetartiodactyla [n = 124], Carnivora 4] Sirenia 1]). Previous...