Marcos César de Oliveira Santos

Universidade de São Paulo

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Salvatore Siciliano

Escola Nacional de Saúde Pública

Rosalinda Carmela Montone

Universidade de São Paulo

José Laílson-Brito

Universidade do Estado do Rio de Janeiro

Alexandre de Freitas Azevedo

Universidade do Estado do Rio de Janeiro

Júlia Emi de Faria Oshima

Universidade Estadual Paulista (Unesp)

Sérgio Rosso

Universidade de São Paulo

Eduardo R. Secchi

Universidade Federal do Rio Grande

Susana Caballero

Group for the Analysis of Development

Giovanna Corrêa e Figueiredo

Universidade de São Paulo

C. Bertozzi

Instituto Biopesca

Cooperative Institutions

Universidade de São Paulo

Universidade Federal de Pernambuco

Universidade Federal do Rio Grande

Universidade Federal da Paraíba

Universidade Estadual Paulista (Unesp)

Universidade Federal do Rio de Janeiro

Universidade Federal do Rio Grande do Sul

Universidade Federal do Paraná

Migration Institute of Australia

Universidade do Estado do Rio de Janeiro

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Insights on site fidelity and calving intervals of the marine tucuxi dolphin (Sotalia fluviatilis) in south-eastern Brazil

Journal of the Marine Biological Association of the United Kingdom (2001)

Marcos César de Oliveira Santos Luciana Barão Acuña Sérgio Rosso

Ecological aspects of the marine tucuxi dolphin, Sotalia fluviatilis (Cetacea: Delphinidae), remain poorly known. Important information can be gathered in long-term studies using photo-identification. Using this methodology, the authors present the first evidence of site fidelity for marine tucuxis in the Cananéia Estuary (25°03′S 48°01′ W), south-eastern Brazil. A total of 86 easily recognizable individuals was catalogued from June 1996 to August 2001, but most of them have been sighted from May 2000. From June 1997 to August 2001, three female tucuxis were sighted on nine (KN #19), 22 (KN #30) and 28 (KN #10) different days in a relatively small area (∼16 km 2 ). Each of them was observed with a calf in 1997–1998 and again with a new offspring in 2000–2001. Thirteen other individuals were reported on eight to 19 different days in the same area between May 2000 and August 2001. Our observations lead to conclusions on the evidence of site fidelity and indicate that calving intervals may range between two and three years for this species in the surveyed area.

Cetacea

10.1017/s0025315401005045

Cite

Citations (65)

Ba/Ca ratios in teeth reveal habitat use patterns of dolphins

Marine Ecology Progress Series (2014)

Silvina Botta Cleandro Pires de Albuquerque Aleta A. Hohn VMF da Silva Marcos César de Oliveira Santos

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 521:249-263 (2015) - DOI: https://doi.org/10.3354/meps11158 Ba/Ca ratios in teeth reveal habitat use patterns of dolphins S. Botta1,*, C. Albuquerque2, A. A. Hohn3, V. M. F. da Silva4, M. C. O. Santos5, C. Meirelles6, L. Barbosa7, A. P. M. Di Beneditto8, R. M. A. Ramos9, C. Bertozzi10, M. J. Cremer11, V. Franco-Trecu12, N. Miekeley13,†, E. R. Secchi1 1Laboratório de Ecologia e Conservação da Megafauna Marinha - EcoMega, Instituto de Oceanografia, Universidade Federal do Rio Grande, Rio Grande RS 96203-900, Brazil 2Departamento Oceanografia e Limnologia, Universidade Federal do Rio Grande do Norte, Natal 59014-100, RN, Brazil 3National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Beaufort, NC 28516, USA 4Laboratório de Mamíferos Aquáticos, Instituto Nacional de Pesquisas da Amazônia, CP 478, Manaus, AM 69011-790, Brazil 5Departamento de Oceanografia Biológica, Instituto Oceanográfico, Universidade de São Paulo, São Paulo, SP 05508-120, Brazil 6Associação de Pesquisa e Preservação de Ecossistemas Aquáticos - AQUASIS, SESC, Caucaia, CE 61627-010, Brazil 7Organização Consciência Ambiental—ORCA, Vila Velha, ES 29101-315, Brazil 8Universidade Estadual do Norte Fluminense, CBB/LCA, Campos dos Goytacazes, RJ 28013-602, Brazil 9Everest Tecnologia em Serviços Ltda. CP 5074, Vitória, ES 29045-970, Brazil 10Projeto BioPesca, Centro Universitário Monte Serrat, Santos, SP 11015-530, Brazil 11Departamento de Ciências Biológicas, Universidade da Região de Joinville, Joinville, SC 89219-710, Brazil 12Proyecto Franciscana, Sección Etología-Facultad de Ciencias, Iguá 4225, Montevideo, CP 11400, Uruguay 13Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, RJ 22453-900, Brazil *Corresponding author: silbotta@gmail.com†Deceased ABSTRACT: Teeth and otoliths are metabolically inert structures that preserve a chronology of chemical variations that may be related to the environmental histories experienced by each organism. Because of the natural decrease of barium (Ba) and increase of strontium (Sr) bioavailability in water with increasing salinity, these elements may be especially useful to track habitat use in aquatic organisms. Therefore, we tested whether the Ba/Ca and Sr/Ca ratios in the teeth of dolphins represent a salinity gradient. The main aim was to determine whether these elements can be used as a natural tag for different aquatic environments. Teeth from 2 freshwater dolphins (Inia geoffrensis and Sotalia fluviatilis) and 2 marine species (S. guianensis and Pontoporia blainvillei) from Brazil and Uruguay were analyzed using a Laser Ablation Inductively Coupled Plasma-Mass Spectrometer. Intensity ratios of 138Ba/43Ca and 86Sr/43Ca were measured along a line that covered all growth increments in the dentin from the second year of life onwards. Teeth from the freshwater species had mean Ba/Ca values tenfold higher than marine dolphins, confirming the inverse relationship between salinity (and thus ambient Ba/Ca) and elemental ratios in teeth. Furthermore, Ba/Ca ratios could also differentiate dolphins from lower-salinity estuarine areas from those in areas with minimal freshwater discharge. No significant differences were found for Sr/Ca values. Results presented encouraging indications for the application of this technique as a potential new tool for studying habitat use in aquatic mammals. KEY WORDS: Barium · Strontium · Laser ablation ICP-MS · Habitat use · Odontocetes Full text in pdf format PreviousNextCite this article as: Botta S, Albuquerque C, Hohn AA, da Silva VMF and others (2015) Ba/Ca ratios in teeth reveal habitat use patterns of dolphins. Mar Ecol Prog Ser 521:249-263. https://doi.org/10.3354/meps11158 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 521. Online publication date: February 17, 2015 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2015 Inter-Research.

10.3354/meps11158

Cite

Citations (10)

Guiana dolphins, Sotalia guianensis (Cetacea: Delphinidae), in the Paranaguá Estuarine Complex: insights on the use of area based on the photo-identification technique

Zoologia (Curitiba) (2010)

Marcos César de Oliveira Santos Júlia Emi de Faria Oshima Eduardo dos Santos Pacífico Ednilson da Silva

The aim of the present study was to provide a preliminary description of habitat use by Guiana dolphins, Sotalia guianensis (Van Bénéden, 1864) in the Paranaguá Estuarine Complex (PEC), state of Paraná, Brazil. Approximately 124 km² were surveyed by small boat from April 2006 to July 2008 in the following subsets of the PEC: Canal do Superagui (~28 km²); Pinheiros Bay (~34 km²); part of Laranjeiras Bay, which included the Guaraqueçaba sub-estuary (~38 km²); and part of the Mixture Section of the PEC (~24 km²). Our efforts were unevenly distributed in the study area. During 55 survey days covering seven distinct seasons, we spent 165 hours observing 323 groups of S. guianensis. Group size varied from two individuals to aggregations as large as approximately 100 dolphins. A total of 49,921 photographs were analyzed; 15,038 (30%) were considered useful for identification purposes. A total of 182 individuals were catalogued, from which 122 (67%) were cataloged in the last three seasons, when the surveyed area was expanded. The number of individual sightings in distinct days varied from one to 16. A total of 94 individuals (51.6%) were re-sighted at least once. From the 37 individuals cataloged in the first season, 18 (48.6%) were re-sighted in the last season. Eleven individuals with 5+ sightings were always observed in the same subset of the estuary, including an individual with 13 sightings. Sixteen individuals with three to 16 sightings were observed in three of the four estuary subsets surveyed. An individual cataloged in May 2002 in a pilot study was re-sighted up to August 2006. Our preliminary results correspond to the first evidence of site fidelity for several monitored individuals; it also revealed, for the first time, the flexibility of movements throughout the entire estuarine complex by several other individuals

Cetacea

10.1590/s1984-46702010000300002

Cite

Citations (8)

Rapport 1994 du comité de suivi de coopération CIRAD-CA/EMBRAPA-CPAC du projet "Connaissance et gestion des hydrosystèmes agricoles des Cerrados"

François Reyniers François Affholder Eduardo Delgado Assad Marcos César de Oliveira Santos

Cote d ivoire

Source

Cite

Citations (0)

Cetacean movements in coastal waters of the southwestern Atlantic ocean

Figshare (2019)

Marcos César de Oliveira Santos José Laílson-Brito Leonardo Flach Júlia Emi de Faria Oshima Giovanna Corrêa e Figueiredo

Abstract: Cetaceans were monitored along ca. 700 km of the southeast coast of Brazil (22°S to 25°S) from 1995 to 2014 using photo-identification. The objective of this study was to identify any presence of long-distance movements for monitored cetacean species and discuss implications. Data on long-range movements of four of the monitored species are presented after the analysis of 321,765 photographs taken for individual identification. Seven individuals from four populations of Guiana dolphins (Sotalia guianensis) considered resident to particular estuaries or bays were reported in dispersal involving movement between pairs of protected areas over long-range distances varying between 86 and 135 km. Three cataloged rough-toothed dolphins (Steno bredanensis), first seen in Guanabara Bay, Rio de Janeiro state (22°46'S) in November 2011, were sighted 240 km southwards as members of the same group in coastal waters of São Paulo state (23°46'S) in July 2014. Water depth for those sightings ranged from 16 to 52.7 m; local sightings of rough-toothed dolphins in Brazil have frequently been in shallow waters, but the species global distribution is usually associated with deeper waters. In a 27-day interval in the spring of 2012, a group of 16 orcas (Orcinus orca) travelled ca. 277 km in shallow coastal waters ranging from 20 to 30 m deep. Orcas are commonly observed between November and February in southeast Brazil, probably in search for prey. In summer months between 2012 and 2014, three Bryde's whales (Balaenoptera edeni) sighted in waters ranging from 14 to 49 m deep, moved between 218 and 327 km. Bryde's whales are usually found in local coastal waters where they spend summer months feeding on sardines. To date, these are the longest estimated movements reported to S. guianensis, S. bredanensis, O. orca and B. edeni in the Southwestern Atlantic Ocean.

10.6084/m9.figshare.7900208

Cite

Citations (0)

Acoustic Description of Beach-Hunting Guiana Dolphins (Sotalia guianensis) in the Cananéia Estuary, Southeastern Brazil

Aquatic Mammals (2020)

Nayara C. Tannure Fernando Sérgio Barbosa Diogo Destro Barcellos Beatriz Mattiuzzo Amanda Esteves Martinelli

Acoustic Description of Beach-Hunting Guiana Dolphins (Sotalia guianensis) in the Cananeia Estuary, Southeastern Brazil

10.1578/am.46.1.2020.11

Cite

Citations (0)

Riverine and marine ecotypes of Sotalia dolphins are different species

Marine Biology (2005)

Haydée A. Cunha Vera Maria Ferreira da Silva José Laílson-Brito Marcos César de Oliveira Santos P.A.C. Flores

Ecotype

Monophyly

Cetacea

10.1007/s00227-005-0078-2

Cite

Citations (120)

Mercury in trophic webs of estuaries in the southwest Atlantic Ocean

Marine Pollution Bulletin (2021)

Tailisi Hoppe Trevizani Rubens César Lopes Figueira Marcos César de Oliveira Santos Camila Domit

Mercury

δ15N

Biomagnification

Bioconcentration

10.1016/j.marpolbul.2021.112370

Cite

Citations (8)

Age and growth of some delphinids in south-eastern Brazil

Journal of the Marine Biological Association of the United Kingdom (2007)

Salvatore Siciliano Renata Maria Arruda Ramos Ana Paula Madeira Di Beneditto Marcos César de Oliveira Santos Ana Bernadete Lima Fragoso

This study provides the first compilation on age and growth of some delphinids in south-eastern Brazil (18°25′S–25°45′S). A total of 154 delphinids were reported: 44 Atlantic spotted dolphin Stenella frontalis ; 36 bottlenose dolphin Tursiops truncatus ; 26 ‘Brazilian’ common dolphin Delphinus sp.; 20 rough-toothed dolphin Steno bredanensis ; 16 Fraser's dolphin Lagenodelphis hosei ; 3 false killer whale Pseudorca crassidens ; 3 unidentified Stenella sp.; 2 pantropical spotted dolphin Stenella attenuata ; 2 short-finned pilot whale Globicephala macrorhynchus ; 1 spinner dolphin Stenella longirostris ; and 1 striped dolphin Stenella coeruleoalba . Age was estimated by counting the number of growth layer groups present in the dentine in 74.5% of the sample. The growth of 92 individuals of the first five species was determined by the Gompertz model to length-at-age data. Stenella frontalis —the oldest specimen was 23 y and the asymptotic length of 224.4 cm predicted by growth curve occurred at about 20 y; T. truncatus —the oldest specimen was 26 y and the asymptotic length of 301.3 cm predicted by growth curve occurred at about 20 y; Delphinus sp.—the oldest dolphin was 18 y and the asymptotic length of 215.9 cm predicted by growth curve occurred at about 5–6 y; S. bredanensis —the oldest specimen was 24 y and the asymptotic length of 258.1 cm predicted by growth curve occurred at about 10 y; L. hosei —the oldest specimen was 19 y and the asymptotic length of 231.2 cm predicted by growth curve occurred at about 7–8 y. Only age was estimated for the other species. The age-at-length data for S. frontalis , Delphinus sp., S. bredanensis and L. hosei were consistent, suggesting a good agreement with previous work on these species. For T. truncatus , the age at asymptotic length obtained in this study might be confirmed by increasing the sample size. The information currently presented will contribute to further life history research of delphinids on the western south Atlantic coast.

Bottlenose dolphin

Cetacea

10.1017/s0025315407053398

Cite

Citations (51)

Desinfección bacteriana del agua de riego mediante el uso de mezclas peroxiacéticas

Vida rural (2007)

Marcos César de Oliveira Santos Fernando Diánez Martínez L. C. del Corral Juan Eugenio Alvaro Martínez-Carrasco Santiago Moreno Vázquez

Source

Cite

Citations (0)