Flavio José de Lima Silva

Flavio José de Lima Silva
Universidade do Estado do Rio Grande do Norte (UERN)

Dr.

About

52
Publications
11,942
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
421
Citations
Citations since 2016
34 Research Items
296 Citations
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060

Publications

Publications (52)
Article
Morphological studies concerning the digestive system can further information on animal diets, thus aiding in the understanding of feeding behavior. Given the scarcity of information on sea turtle digestive system morphology, the aim of the present study was to describe the digestive tube (DT) morphology of Eretmochelys imbricata hatchlings to furt...
Article
Morphological studies of the oropharyngeal cavity of chelonians have become an interesting tool in the understanding of evolutionary processes associated with feeding habits in aquatic animals and the transition from aquatic to terrestrial forms. In this context, the aim of the present study was to describe the oropharyngeal cavity floor morphology...
Article
False killer whales (FKWs; Pseudorca crassidens) are found in deep waters of temperate and tropical oceans worldwide. This species is considered near threatened and global populations’ trends are unknown although there is evidence of decline of various populations. The mass stranding of cetaceans remains an intriguing event and often the cause(s)...
Article
Sea turtles face several threats and pollution has become a major concern for their conservation worldwide. We analyzed samples of the liver, muscles, and kidneys of 38 Chelonia mydas stranded along the Potiguar Basin, northeastern Brazil, between 2015 and 2018 to determine the total Hg concentration (THg), as well as the concentrations of Cu, Cd,...
Article
Brazil has a coast that is threatened by economic activities and accelerated urbanisation process, causing ecosystem unbalance and decreasing socioenvironmental quality. We analysed data collected from 2010 to 2019 during the Beach Monitoring Project in north-eastern Brazil to quantify sea turtle strandings with signs of anthropogenic interaction,...
Article
Full-text available
Traumas cranianos em tartarugas marinhas geralmente estão relacionados à ação antrópica por colisão com embarcações motorizadas. Em sua maioria, estes eventos são fatais, e quando não, várias sequelas podem permanecer. Desta forma, objetivou-se relatar um caso de uma tartaruga-cabeçuda (Caretta caretta) com politraumatismos craniano. O espécime foi...
Book
O objetivo foi reunir resultados importantes de pesquisas realizadas no Brasil, que contribuíram de forma significativa para aumentar o conhecimento sobre sua biologia e seu grau de ameaça, auxiliando na identificação de medidas que possam diminuir sua mortalidade, seja em Planos de Ação, ou nas ações institucionais das diversas universidades e ONG...
Article
Full-text available
In this paper we report the trauma suffered by a green turtle (Chelonia mydas ), caused by a collision with a motorboat, and describe the case ante and post-mortem . An adult female green turtle was rescued alive on December 2, 2016 at Ponta Negra beach, municipality of Natal, Rio Grande do Norte, Brazil. The rescued animal was sent to the Marine F...
Article
Full-text available
A juvenile green sea turtle (Chelonia mydas) of undetermined sex was rescued on October 16, 2019, in the archipelago of Fernando de Noronha, Pernambuco, Brazil. The animal was presence of active bleeding resulting from two transverse fractures in the carapace, with exposure of the coelomic cavity. Radiological and hematological tests were performed...
Article
This study aims to determine the influence of distance and environmental parameters of water on Sotalia guianensis sounds. We used recordings of three distinct vocalisations for testing their propagation in places with different environmental characteristics in the Northeast and Southeast of Brazil. We observed that the propagation of all the sound...
Article
Full-text available
Fibropapillomatosis (FP) is a multifactorial, neoplastic and infectious disease that affects all sea turtle species, and Chelonid alphaherpesvirus 5 (ChHV5) has been singled out as the primary etiological agent. This disease is mainly characterized by cutaneous tumors, but visceral fibromas, myxofibromas and fibrosarcomas have been also reported an...
Article
Full-text available
Reports of intussusception in sea turtles are generally linked to marine debris ingestion; therefore, only a few cases of the disease are associated with parasitic infestations. The objective of this study was to describe the necropsy findings of the first reported case of colocolic intussusception in a green sea turtle Chelonia mydas, associated w...
Article
Full-text available
This study monitored marine turtle nests in a region known as the Potiguar Basin, which stretches from the northern region of Rio Grande do Norte State (5°4’1.15” S, 36°4’36.41” W) to eastern Ceará State (4°38’48.28” S, 37°32’52.08” W) in Brazil. We collected data from January 2011 to December 2019 to identify species of sea turtles that spawn in t...
Book
Full-text available
Este livro teve o objetivo de reunir resultados importantes de pesquisas realizadas no Brasil, que contribuíram de forma significativa para aumentar o conhecimento sobre sua biologia e seu grau de ameaça, auxiliando na identificação de medidas que possam diminuir sua mortalidade, seja em Planos de Ação, ou nas ações institucionais das diversas univ...
Article
Full-text available
Gastrointestinal perforation in sea turtles may be associated with the ingestion of solid waste; however, other factors, including the ingestion of marine organisms, may cause intestinal perforation. Herein, we report, presumably, the first case of a death of a loggerhead sea turtle (Caretta caretta) from ingesting a live goldspotted eel (Myrichthy...
Book
Full-text available
Em todas estas atividades, a observação do comportamento dos peixes-bois é uma importante ferramenta para a decisão técnica sobre a destinação dos animais, assim como para as tomadas de decisão institucional e governamental sobre o espécime em análise. Os estudos do comportamento animal são importantes no campo científico, assim como se mostram rel...
Article
The presence of pyrethroid compounds in hepatic tissue of Guiana dolphins (Sotalia guianensis) is reported for the first time. Twelve pyrethroids were determined in 50 animals from eight locations of the Brazilian coast. The highest average concentration of total pyrethroids (∑PYR) was 1166 ng.g⁻¹ lw, with values ranging from 148 to 5918 ng.g⁻¹ lw,...
Article
Full-text available
Fish feeding habit associated to the morphology of their digestive tube can provide useful biological and ecological information. Between January and December 2012, we examined 16 fish species discarded by trawl in the Potiguar basin, northeastern Brazil, and classified them into four groups according to Alimentary Index - IAi. Our aims were to: (1...
Article
Full-text available
Fibropapillomatosis is a threat to the survival of marine turtles, especially green turtles; therefore, studies on this neoplastic disease are considered a conservation priority. Our goal was to characterize the incidence and spatial–temporal distribution of fibropapillomatosis in the Potiguar Basin, Rio Grande do Norte and Ceará states, Brazil. Th...
Article
The aortic arrangement is an important structure associated with the maintenance of homeostasis. Based on this information, this study was conducted to describe the collateral arteries of the aortic arch of Antillean manatee and define the standard model for the species. Three specimens, an adult male, adult female and a male neonate, all stranding...
Article
Full-text available
We described aspects of spatial distribution, composition, and seasonality of sea turtle species stranded in the Rio Grande do Norte and Ceará States Basin (“Potiguar Basin”), northeastern Brazil, during a 7-yr period (between 2010 and 2016) and evaluated aspects related to anthropogenic impact. Our results revealed the occurrence of the 5 sea turt...
Chapter
Full-text available
The Sotalia guianensis dolphin occurs in the western Atlantic Ocean, from the south of Brazil to Central America. It is a coastal species, much susceptible to human impacts, as anthropogenic noises, which in general causes potential impacts in marine mammals’ populations, because the emission and reception of sound signals plays a complex and vital...
Article
Full-text available
This study revises and updates information on bottlenose dolphin Tursiops truncatusstrandings and sightings in northeastern Brazil. A total of 72 strandings were recorded from 1992 to 2010, and 51 sightings were recorded from 1988 to 2010 along the states from Ceará to Bahia, including Fernando de Noronha and São Pedro and São Paulo archipelagos, R...
Article
Full-text available
Alive Antillean manatee stranding is one of the main challenges for the conservation of the species in Brazil. In the present study, data on Antillean manatee stranding recorded by the CMA/ICMBio’s Wild Animals Rehabilitation Center from 1987 to 2015 were analyzed. The CMA and the REMANE’s (Northeastern Aquatic Mammal Stranding Network’s) instituti...
Article
Full-text available
This study investigated the emission of subaquatic noise from recreational tourism motorboats, schooners and a sea-bottom mounted water pump. Analyses demonstrated alterations in several whistle (IF: t = 2.42, P = 0.015; FF: t = −2.22, P = 0.025) and calls patterns (MIF: t = −3.13, P = 0.001; MAF: t = −3.49, P = 0.0005; FD: t = −2.21, P = 0.027; D:...
Article
Full-text available
Selective pressure from the environment on species may select adaptations as a whole, including the specific context of acoustics. Some authors report that the acoustic repertoire of Sotalia guianensis presents dialects as a geographical reflection. However, others propose that the environmental characteristics are the factor that imposes these var...
Article
Full-text available
Humpback whales (Megaptera novaeangliae) migrate between their feeding grounds, located in high latitudes, and their breeding grounds, located in low latitudes, exhibiting certain levels of site fidelity to their migratory destinations. The residence time, also known as occupancy rate, can be defined as the minimum number of days that those individ...
Article
This study represents the first survey of the parasitic fauna of cetaceans off the northeastern coast of Brazil. Parasites were collected from 82 animals rescued from the states of Ceará to Bahia, including the archipelago of Fernando de Noronha. A total of 14 species of cetaceans were evaluated: Sotalia guianensis, Stenella sp., Stenella clymene,...
Article
Full-text available
Habitat use by the Little Blue Heron (Egretta caerulea) and discovery of feeding territoriality are discussed here. The results showed the existence of a territorial individual defending an area (2,564.46 +/- 943.56 m(2)) close to the mangrove, and non-territorial individuals (9.17 +/- 2.54) in the rest of a demarcated area (mean area for the non-t...
Article
Full-text available
The present study demonstrates the influence of time of the day and tide on the frequency of individuals and on the social and foraging behaviour of an equatorial population of Sotalia guianensis. A population of Sotalia guianensis from Enseada do Curral (6º13'00"S 35º3'36"W), north-eastern Brazil, was investigated from October 1999 to September de...
Article
1 Laboratório de Sistemática e Ecologia Animal, Departamento de Ciências Biológicas, Universidade do Estado do Rio Grande do Norte, Avenida Antônio de Campos, s/n, CEP: 59600-970, Mossoró, Brazil and Projeto Cetáceos da Costa Branca—UERN, Avenida Antônio de Campos, s/n, CEP: 59600-970, Mossoró, Brazil and Programa de Pós-Graduação em Psicobiologia,...
Article
The present study investigated both circadian and seasonal fluctuations in the daytime activities of the spinner dolphin, Stenella longirostris, from the Fernando de Noronha Archipelago in Brazil. The number of dolphins, and aerial, and reproductive activities were documented. The observations were carried out from January 1997 to December 2001. Te...
Article
Full-text available
The aim of this work is to describe the repertoire of calls utilized by the spinner dolphins (Stenella longirostris) in the southern Atlantic Ocean. We measured four acoustic parameters of the fundamental frequency of each call: (i) duration; (ii) frequency amplitude; (iii) minimum frequency; and (iv) maximum frequency. We also classified calls by...
Article
Full-text available
The increase in the research of cetacean surveys on the Brazilian coast has brought new data on the distribution of species never reported before. The present work reviews the current knowledge on cetaceans species and extends this knowledge with an analysis of cetaceans stranded in the Parnaiba Delta, on the coast of Maranhão State, Brazil. The st...
Article
Full-text available
This study tested the association between variation in precipitation and behavioural seasonality in Sotalia guianensis, at the Curral inlet (6º13′00″S 35º3′00″W) in north-eastern Brazilian coast. From October 1999 to September 2003, observations were carried out four days a month. Behaviours were registered instantaneously each five minute interval...
Article
Full-text available
This work reports a stranding of a dwarf minke whale (Balaenoptera acutorostrata) in 2004 in Caju Bay at Delta of Parnaiba River, Maranhão State (MA), Brazil. The specimen and the maturity characteristics were identified through skull measurements and morphology. Osteological analyses were carried out and abnormal growth of occipital bones was obse...
Article
Full-text available
The coloration pattern of the estuarine dolphin, Sotalia guianensis, does not display variations in its distribution and the colour grey, as its common name suggests, is predominant. On the coast of the state of Rio Grande do Norte a dolphin was sighted with atypical coloration in relation to animals from that region. After observing its morphologi...
Article
Full-text available
We present an overview of predator-prey and other trophic relationships of spinner dolphins ( Stenella longirostris ) around Fernando de Noronha Archipelago, off northeastern Brazil, with use of original data and a brief review of data published elsewhere. Records were made while snorkelling among the dolphins in daytime. Individual fish pursuit an...
Article
Full-text available
We present an overview of predator-prey and other trophic relationships of spinner dolphins (Stenella longirostris) around Fernando de Noronha Archipelago, off northeastern Brazil, with use of original data and a brief review of data published elsewhere. Records were made while snorkelling among the dolphins in daytime. Individual fish pursuit and...
Article
Full-text available
We describe and comment on two aberrant indi- viduals of the genus Stenella from Fernando de Noronha Archipelago, tropical West Atlantic, which we regard as interspecific hybrids. Each dolphin was found living with a large group of spinner dolphins, Stenella longirostris. One of the aberrant dolphins is a presumed hybrid between S. longirostris and...
Article
Full-text available
At Fernando de Noronha Archipelago in the South West Atlantic, spinner dolphins (Stenella longirostris) regularly congregate in large groups in a bay with clear, shallow water, allowing their behaviour to be observed and recorded at close quarters. We present an overview of the diurnal underwater activity of the Noronha spinners while in the bay. A...

Network

Cited By