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  • 1
    Online Resource
    Online Resource
    Report of the Working Group on Taxonomy and Stock Identity of bottlenose dolphins in the Southwest Atlantic Ocean
    Sociedad Latinoamericana de Especialistas en Mamiferos Acuaticos (SOLAMAC) ; 2017
    In:  Latin American Journal of Aquatic Mammals Vol. 11, No. 1-2 ( 2017-01-08), p. 16-28
    Details
    In: Latin American Journal of Aquatic Mammals, Sociedad Latinoamericana de Especialistas en Mamiferos Acuaticos (SOLAMAC), Vol. 11, No. 1-2 ( 2017-01-08), p. 16-28
    Abstract: This report compiles the current information on morphology, genetics, stable isotopes, acoustics and parasites of bottlenose dolphins along the Southwest Atlantic Ocean (SWAO), which includes waters of Brazil, Uruguay and Argentina. The authors also briefly review the proposed taxonomy for the genus along the Atlantic coast of South America.
    Type of Medium: Online Resource
    ISSN: 2236-1057 , 1676-7497
    URL: Article
    DOI: 10.5597/00213
    Language: Unknown
    Publisher: Sociedad Latinoamericana de Especialistas en Mamiferos Acuaticos (SOLAMAC)
    Publication Date: 2017
    detail.hit.zdb_id: 2638984-8
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  • 2
    Online Resource
    Online Resource
    Mercury in trophic webs of estuaries in the southwest Atlantic Ocean
    Elsevier BV ; 2021
    In:  Marine Pollution Bulletin Vol. 167 ( 2021-06), p. 112370-
    Details
    In: Marine Pollution Bulletin, Elsevier BV, Vol. 167 ( 2021-06), p. 112370-
    Type of Medium: Online Resource
    ISSN: 0025-326X
    URL: Article
    DOI: 10.1016/j.marpolbul.2021.112370
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 414337-1
    detail.hit.zdb_id: 2001296-2
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  • 3
    Online Resource
    Online Resource
    Bioaccumulation of heavy metals in estuaries in the southwest Atlantic Ocean
    Springer Science and Business Media LLC ; 2022
    In:  Environmental Science and Pollution Research Vol. 30, No. 10 ( 2022-11-12), p. 26703-26717
    Details
    In: Environmental Science and Pollution Research, Springer Science and Business Media LLC, Vol. 30, No. 10 ( 2022-11-12), p. 26703-26717
    Type of Medium: Online Resource
    ISSN: 1614-7499
    URL: Article
    DOI: 10.1007/s11356-022-23974-x
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2014192-0
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  • 4
    Online Resource
    Online Resource
    Trophic dynamics in two South American estuaries encompassing industrial development and a biodiversity hotspot
    Wiley ; 2019
    In:  Aquatic Conservation: Marine and Freshwater Ecosystems Vol. 29, No. 12 ( 2019-12), p. 2045-2056
    Details
    In: Aquatic Conservation: Marine and Freshwater Ecosystems, Wiley, Vol. 29, No. 12 ( 2019-12), p. 2045-2056
    Abstract: Estuaries are critical to the life histories and development of many marine species, and support some of the most productive aquatic ecosystems. However, owing to their geographic accessibility, many estuaries face considerable anthropogenic threats, which can be exacerbated in developing nations. Understanding the ecological implications of anthropogenic activities as a precursor to dedicated conservation activities requires comprehensive assessments of baseline trophic relationships. This study addresses a shortfall in such information for two tropical, coastal ecosystems globally identified as priority areas for biodiversity conservation: the Paranaguá estuarine complex; and the Cananéia–Iguape estuarine lagoon system in southern Brazil. Ecological relationships were investigated through carbon and nitrogen stable isotope (δ 13 C and δ 15 N) determination in sediments, plant fragments and the muscle tissues of marine species occupying different trophic levels, including benthic invertebrates, ichthyofauna ( Stellifer rastrifer , Paralonchurus brasiliensis , and Isopisthus parvipinnis ), and delphinids ( Sotalia guianensis and Pontoporia blainvillei ). Isotope ratios facilitated distinguishing plant fragments, sediments (which were terrestrially influenced) and biota (predominantly marine influenced). However, despite variation among anthropogenic stressors, isotope ratios did not vary between the studied estuaries, implying similar impacts on trophic relationships which might reflect some inter‐estuary mixing. All ichthyofauna and the delphinids had similar generalist diets and shared the same trophic niche, which may reflect their consistent spatio‐temporal distributions and habitat patterns in the estuaries. The data illustrate the utility of isotopically characterizing biodiversity‐hotspot estuaries as a mechanism for rapidly assessing ecological relationships between key species and regional habitats. Such an approach can be used to evaluate ecological connectivity as a baseline for management and might be applied more broadly, embracing multiple regions as part of estuarine and coastal biome conservation efforts.
    Type of Medium: Online Resource
    ISSN: 1052-7613 , 1099-0755
    URL: Issue
    URL: Article
    DOI: 10.1002/aqc.v29.12
    DOI: 10.1002/aqc.3222
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 1146285-1
    detail.hit.zdb_id: 1496050-3
    SSG: 12
    SSG: 14
    SSG: 21
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  • 5
    Online Resource
    Online Resource
    Home ranges of Guiana dolphins ( Sotalia guianensis ) (Cetacea: Delphinidae) in the Cananéia estuary, Brazil
    Cambridge University Press (CUP) ; 2010
    In:  Journal of the Marine Biological Association of the United Kingdom Vol. 90, No. 8 ( 2010-12), p. 1641-1647
    Details
    In: Journal of the Marine Biological Association of the United Kingdom, Cambridge University Press (CUP), Vol. 90, No. 8 ( 2010-12), p. 1641-1647
    Abstract: Home ranges of seven Guiana dolphins ( Sotalia guianensis ) (Van Bénéden, 1864) were studied in the Cananéia estuary (~25°03′S 47°55′W), south-eastern Brazil. Boat-based observations were conducted from May 2000 to July 2003 in ~132 km 2 of protected inner waters. The photo-identification technique was used to follow naturally marked individuals through time and space. From a total of 138 catalogued individuals, five males and two females presented 20+ sightings and were used for home range estimation. Sightings were plotted and analysed in a Geographic Information System (GIS). With the ‘Home Range Tools’ extension the fixed kernel density estimator with band width (smoothing parameter) chosen via least squares cross-validation was performed for each individual. The fixed kernel method was used to estimate the non-parametric utility distribution of each dolphin, keeping band width (h) constant for a data set. The first polygons created by these parameters had an amoeboid shape and in some cases more than one centre of activity. The 95% home range estimated outlines varied from 1.6 to 22.9 km 2 (7.9 ± 8.3 km 2 ). This large interval shows strong evidences on individual variation in S. guianensis ' home ranges. Several individuals showed small home ranges when compared to other cetacean species. An overlap of home ranges of different sizes and shapes were observed for Guiana dolphins with large range movements. Centres of activity were concentrated in the main entrance of the Cananéia estuary. This was a first attempt to understand the way S. guianensis uses the Cananéia estuary and such data are essential for conservation and management purposes.
    Type of Medium: Online Resource
    ISSN: 0025-3154 , 1469-7769
    URL: Article
    DOI: 10.1017/S0025315410001311
    RVK:
    WA 15000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2010
    detail.hit.zdb_id: 1491269-7
    detail.hit.zdb_id: 281325-7
    SSG: 12
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  • 6
    Online Resource
    Online Resource
    Cetacean records along São Paulo state coast, Southeastern Brazil
    FapUNIFESP (SciELO) ; 2010
    In:  Brazilian Journal of Oceanography Vol. 58, No. 2 ( 2010-06), p. 123-142
    Details
    In: Brazilian Journal of Oceanography, FapUNIFESP (SciELO), Vol. 58, No. 2 ( 2010-06), p. 123-142
    Abstract: A costa do Estado de São Paulo (SP) (23º18'S, 44º42'O; 25º14'S, 48º01'O) apresenta aproximadamente 600 km de extensão voltada para o Oceano Atlântico Ocidental no sudeste do Brasil. Registros de encalhes e de avistamentos de cetáceos vêm sendo realizados ao longo desse litoral. Desde 1993, dados obtidos em literatura científica, material osteológico encontrado em museus, fotografias e artigos de arquivos de jornais, universidades e aquários foram organizados e atualizados. Investigações efetuadas em campo referentes a encalhes e avistamentos de cetáceos também foram conduzidas. Um total de 29 espécies de cetáceos foi registrado, incluindo 7 misticetos e 22 odontocetos, como indicados a seguir: Balaenoptera physalus, B. borealis, B. edeni, B. acutorostrata, B. bonaerensis, Megaptera novaeangliae, Eubalaena australis, Physeter macrocephalus, Kogia breviceps, K. sima, Berardius arnuxii, Mesoplodon europaeus, M. mirus, Ziphius cavirostris, Orcinus orca, Feresa attenuata, Globicephala melas, G. macrorhynchus, Pseudorca crassidens, Delphinus capensis, Lagenodelphis hosei, Steno bredanensis, Tursiops truncatus, Stenella frontalis, S. longirostris, S. coeruleoalba, Lissodelphis peronii, Sotalia guianensis e Pontoporia blainvillei. Algumas espécies foram observadas apenas em uma ocasião e incluem tanto vagantes de suas áreas comuns de distribuição, assim como de conhecidas áreas de distribuições preferenciais oceânicas. Outras, como P. blainvillei e S. guianensis, são comumente encontradas em águas rasas o ano todo. Z. cavirostris, P. crassidens e L. hosei são listados pela primeira vez para a costa de SP.
    Type of Medium: Online Resource
    ISSN: 1679-8759
    URL: Article
    DOI: 10.1590/S1679-87592010000200004
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2010
    detail.hit.zdb_id: 730380-4
    detail.hit.zdb_id: 2465333-0
    detail.hit.zdb_id: 2144860-7
    detail.hit.zdb_id: 2669468-2
    SSG: 12
    SSG: 7,36
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    Online Resource
  • 7
    Online Resource
    Online Resource
    [NO TITLE AVAILABLE]
    FapUNIFESP (SciELO) ; 2012
    In:  Brazilian Journal of Oceanography Vol. 60, No. 2 ( 2012-06), p. 189-198
    Details
    In: Brazilian Journal of Oceanography, FapUNIFESP (SciELO), Vol. 60, No. 2 ( 2012-06), p. 189-198
    Abstract: O presente estudo apresenta novas informações sobre os hábitos alimentares de golfinhos-pintados-do-Atlântico, Stenella frontalis, no Atlântico Sudoeste. Foram analisados nove conteúdos estomacais de S. frontalis acidentalmente capturados em operações de pesca entre 2005 e 2007 pela frota pesqueira do município de Cananéia (25°00'S; 47°55'W), sudeste do Brasil. Foram recuperados dos conteúdos estomacais 1 422 bicos de cefalópodes, 147 otólitos e três camarões. Dos itens analisados, foram reportados um mínimo de oito espécies de peixes pertencentes às famílias Trichiuridae, Carangidae, Sparidae, Merluccidae, Engraulidae, Sciaenidae, Congridae e Scombridae, cinco espécies de cefalópodes pertencentes às famílias Loliginidae, Sepiolidae, Tremoctopodidae e Thysanoteuthidae, e uma espécie de camarão da família Penaeidae. Com base no Índice de Importância Relativa (IRI), o peixe-espada, Trichiurus lepturus, correspondeu à espécie de peixe com maior importância. Entre os cefalópodes, a espécie que apresentou o maior valor de IRI foi Doryteuthis plei. Algumas espécies foram reportadas pela primeira vez como presa de S. frontalis em águas brasileiras: Xiphopenaeus kroyeri, Tremoctopus violaceus, Semirossia tenera, Merluccius hubbsi, Pagrus pagrus e Paralonchurus brasiliensis. S. frontalis apresentou hábitos alimentares teutófagos e ictiófagos, com aparente predomínio do primeiro, e predou principalmente sobre itens pelágicos e demersais.
    Type of Medium: Online Resource
    ISSN: 1679-8759
    URL: Article
    DOI: 10.1590/S1679-87592012000200009
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2012
    detail.hit.zdb_id: 730380-4
    detail.hit.zdb_id: 2465333-0
    detail.hit.zdb_id: 2144860-7
    detail.hit.zdb_id: 2669468-2
    SSG: 12
    SSG: 7,36
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  • 8
    Online Resource
    Online Resource
    Sightings of franciscana dolphins (pontoporia blainvillei): the discovery of a population in the Paranaguá estuarine complex, Southern Brazil
    FapUNIFESP (SciELO) ; 2009
    In:  Brazilian Journal of Oceanography Vol. 57, No. 1 ( 2009-03), p. 57-63
    Details
    In: Brazilian Journal of Oceanography, FapUNIFESP (SciELO), Vol. 57, No. 1 ( 2009-03), p. 57-63
    Type of Medium: Online Resource
    ISSN: 1679-8759
    URL: Article
    DOI: 10.1590/S1679-87592009000100006
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2009
    detail.hit.zdb_id: 730380-4
    detail.hit.zdb_id: 2465333-0
    detail.hit.zdb_id: 2144860-7
    detail.hit.zdb_id: 2669468-2
    SSG: 12
    SSG: 7,36
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  • 9
    Online Resource
    Online Resource
    A Gervais' beaked whale (〈I〉Mesoplodon europaeus〈/I〉) washed ashore in southeastern Brazil: extra limital record?
    Aquatic Mammals Journal ; 2003
    In:  Aquatic Mammals Vol. 29, No. 3 ( 2003-12-01), p. 404-410
    Details
    In: Aquatic Mammals, Aquatic Mammals Journal, Vol. 29, No. 3 ( 2003-12-01), p. 404-410
    Type of Medium: Online Resource
    ISSN: 0167-5427 , 0000-0000
    URL: Article
    DOI: 10.1578/01675420360736604
    Language: English
    Publisher: Aquatic Mammals Journal
    Publication Date: 2003
    detail.hit.zdb_id: 2129367-3
    SSG: 12
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  • 10
    Online Resource
    Online Resource
    Guiana dolphin home range analysis based on 11 years of photo-identification research in a tropical estuary
    Oxford University Press (OUP) ; 2016
    In:  Journal of Mammalogy Vol. 97, No. 2 ( 2016-03-23), p. 599-610
    Details
    In: Journal of Mammalogy, Oxford University Press (OUP), Vol. 97, No. 2 ( 2016-03-23), p. 599-610
    Abstract: Home range studies provide significant insights on social organization and interactions, limiting resources and habitat use. Knowledge on home range and habitat use by Guiana dolphins, Sotalia guianensis , is still scarce. The aim of this study was to identify and analyze individual’s home ranges of Guiana dolphins in the Cananéia Estuary (~25°03′S, 47°55′W), located in southeastern Brazil. Photo-identification efforts were conducted between 2000 and 2010. From a total of 135,918 pictures taken, 34,086 (25%) were useful for individual identification. Two-hundred and five individuals were cataloged based on permanent notches along dorsal fin borders. Of the cataloged individuals, 31 had been identified a minimum of 20 times, on distinct dates, prior to this analysis. Home ranges were estimated for these individuals using 4 methods: minimum convex polygon (MCP), adaptive kernel with least-squares cross-validation (AKLSCV), fixed kernel with reference bandwidth (FKHREF), and fixed kernel with least-squares cross-validation (FKLSCV). The sizes of the estimated home ranges varied between 2.2 and 43.8 km 2 ( X¯ = 17.5 km 2 ) with MCP, between 0.8 and 82.5 km 2 ( X¯ = 15.6 km 2 ) with AKLSCV, between 3.9 and 244 km 2 ( X¯ = 72.4 km 2 ) with FKHREF, and from 0.6 to 70.6 km 2 ( X¯ = 13.5 km 2 ) with FKLSCV. Significant differences in size and shape of the generated areas were detected when comparing the 4 tested methods. Variation of individual’s home range sizes and an extensive overlap among home ranges of different Guiana dolphins in the Cananéia Estuary provide evidence that the region supports important resources for this species. Therefore, preventing habitat loss in this region is essential to guaranteeing the persistence of this population. O estudo sobre o uso de área pode fornecer informações sobre organização social e interações, recursos limitantes e sobre o uso de habitat. Ainda é escasso o conhecimento sobre como o boto-cinza, Sotalia guianensis usa seu habitat. O objetivo deste estudo foi identificar e analisar as áreas de uso individuais de S. guianensis no estuário de Cananéia (~25°03′S; 47°55′W), localizado no sudeste brasileiro. Os esforços de foto-identificação foram realizados entre os anos de 2000 e 2010. De um total de 135.918 fotografias tomadas, 34.086 (25%) foram úteis para identificações individuais. Duzentos e cinco indivíduos foram catalogados através das marcas permanentes presentes em suas nadadeiras dorsais. Dentre os indivíduos catalogados, 31 foram identificados ao menos em 20 ocasiões, em dias distintos, antes destas análises. As áreas de uso foram estimadas para estes indivíduos utilizando quatro métodos distintos: mínimo polígono convexo (MPC), kernel adaptativo com largura determinada pelo método de validação cruzada de quadrados mínimos (AKLSCV), kernel fixo com largura de referência (FKHREF) e kernel fixo com largura determinada pelo método de validação cruzada de quadrados mínimos (FKLSCV). Os tamanhos das áreas de uso geradas variaram entre 2,2 e 43,8 km 2 ( X¯ = 17,5 km 2 ) com o uso do MPC, 0,8 e 82,5 km 2 ( X¯ = 15,6 km 2 ) com o uso do AKLSCV, 3,9 e 244 km 2 ( X¯ = 72,4 km 2 ) com o uso do FKHREF, e de 0,6 a 70,6 km 2 ( X¯ = 13,5 km 2 ) com o uso do FKLSCV. Foram detectadas diferenças significativas no tamanho e formato das áreas geradas pelos quatro métodos testados. Variações nos tamanhos das áreas de uso individuais e a extensa sobreposição entre diferentes áreas de uso dos botos-cinza no estuário de Cananéia fornecem evidências de que a região provê recursos importantes para esta espécie. Portanto, prevenir a perda de habitat na região é essencial para garantir a persistência dessa população.
    Type of Medium: Online Resource
    ISSN: 1545-1542 , 0022-2372
    URL: Article
    DOI: 10.1093/jmammal/gyv207
    RVK:
    WA 15000
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2016
    detail.hit.zdb_id: 2066602-0
    SSG: 12
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