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Salinity-driven habitat use of marine-estuarine batoids on the Amazon Coast.

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Title: Salinity-driven habitat use of marine-estuarine batoids on the Amazon Coast.
Authors: Palmeira-Nunes, Ana Rita Onodera1 (AUTHOR) anarits@gmail.com, de Souza Rosa, Ricardo2 (AUTHOR), Nunes, Jorge Luiz Silva1 (AUTHOR), Piorski, Nivaldo Magalhães1 (AUTHOR), de Luna Sales, João Braullio3 (AUTHOR), Santos, Jamerson Aguiar4 (AUTHOR), Martins, Ana Paula Barbosa5 (AUTHOR), Hauser-Davis, Rachel Ann6 (AUTHOR), Rincon, Getulio7 (AUTHOR), Coelho, Keyton Kylson Fonseca8 (AUTHOR), Rodrigues-Filho, Luís Fernando9 (AUTHOR), Wosnick, Natascha10 (AUTHOR)
Source: Environmental Biology of Fishes. Nov2025, Vol. 108 Issue 11, p1763-1782. 20p.
Subject Terms: *Salinity, *Estuaries, *Chondrichthyes, *Marine resources conservation, *Larvae, *Climate change, *Brackish waters, *Habitat conservation
Abstract: The behavioral plasticity of non-marine elasmobranch species allows these animals to strategically inhabit areas where salinity aligns with their physiological needs. Thus, this study aimed to investigate habitat use by rays in an Amazonian estuary, following a categorization of non-marine species based on the type of environment in which critical life history phases occur. Data on the capture of ray species in fishing weirs were acquired through a monitoring program conducted from March 2011 to April 2012. One hundred and forty-five coastal-estuarine rays, representing seven species, were sampled over 1 year in the estuary, across a salinity range from 12.9 to 41.3 ppt (26.8 ± 11.6 ppt). The dominant presence of neonates and juveniles, constituting approximately 70% of the total rays captured year-round, is noteworthy. Additionally, the presence of pregnant females with embryos at various developmental stages indicates the importance of the study area for the life cycle of various elasmobranch species. Our data suggest that Hypanus guttatus and Hypanus geijskesi fit into the estuarine generalist category, and Gymnura aff. micrura fits into the non-marine transient category. We identify salinity as a key driver of ray temporal distribution within the Amazonian coast, a crucial region for elasmobranch conservation. Future studies should, therefore, aim to understand how climate change might impact elasmobranch habitat use in this region. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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  Label: Title
  Group: Ti
  Data: Salinity-driven habitat use of marine-estuarine batoids on the Amazon Coast.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Palmeira-Nunes%2C+Ana+Rita+Onodera%22">Palmeira-Nunes, Ana Rita Onodera</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> anarits@gmail.com</i><br /><searchLink fieldCode="AR" term="%22de+Souza+Rosa%2C+Ricardo%22">de Souza Rosa, Ricardo</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nunes%2C+Jorge+Luiz+Silva%22">Nunes, Jorge Luiz Silva</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Piorski%2C+Nivaldo+Magalhães%22">Piorski, Nivaldo Magalhães</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22de+Luna+Sales%2C+João+Braullio%22">de Luna Sales, João Braullio</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Santos%2C+Jamerson+Aguiar%22">Santos, Jamerson Aguiar</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Martins%2C+Ana+Paula+Barbosa%22">Martins, Ana Paula Barbosa</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hauser-Davis%2C+Rachel+Ann%22">Hauser-Davis, Rachel Ann</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rincon%2C+Getulio%22">Rincon, Getulio</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Coelho%2C+Keyton+Kylson+Fonseca%22">Coelho, Keyton Kylson Fonseca</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rodrigues-Filho%2C+Luís+Fernando%22">Rodrigues-Filho, Luís Fernando</searchLink><relatesTo>9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wosnick%2C+Natascha%22">Wosnick, Natascha</searchLink><relatesTo>10</relatesTo> (AUTHOR)
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Environmental+Biology+of+Fishes%22">Environmental Biology of Fishes</searchLink>. Nov2025, Vol. 108 Issue 11, p1763-1782. 20p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Salinity%22">Salinity</searchLink><br />*<searchLink fieldCode="DE" term="%22Estuaries%22">Estuaries</searchLink><br />*<searchLink fieldCode="DE" term="%22Chondrichthyes%22">Chondrichthyes</searchLink><br />*<searchLink fieldCode="DE" term="%22Marine+resources+conservation%22">Marine resources conservation</searchLink><br />*<searchLink fieldCode="DE" term="%22Larvae%22">Larvae</searchLink><br />*<searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br />*<searchLink fieldCode="DE" term="%22Brackish+waters%22">Brackish waters</searchLink><br />*<searchLink fieldCode="DE" term="%22Habitat+conservation%22">Habitat conservation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The behavioral plasticity of non-marine elasmobranch species allows these animals to strategically inhabit areas where salinity aligns with their physiological needs. Thus, this study aimed to investigate habitat use by rays in an Amazonian estuary, following a categorization of non-marine species based on the type of environment in which critical life history phases occur. Data on the capture of ray species in fishing weirs were acquired through a monitoring program conducted from March 2011 to April 2012. One hundred and forty-five coastal-estuarine rays, representing seven species, were sampled over 1 year in the estuary, across a salinity range from 12.9 to 41.3 ppt (26.8 ± 11.6 ppt). The dominant presence of neonates and juveniles, constituting approximately 70% of the total rays captured year-round, is noteworthy. Additionally, the presence of pregnant females with embryos at various developmental stages indicates the importance of the study area for the life cycle of various elasmobranch species. Our data suggest that Hypanus guttatus and Hypanus geijskesi fit into the estuarine generalist category, and Gymnura aff. micrura fits into the non-marine transient category. We identify salinity as a key driver of ray temporal distribution within the Amazonian coast, a crucial region for elasmobranch conservation. Future studies should, therefore, aim to understand how climate change might impact elasmobranch habitat use in this region. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=189055131
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10641-025-01702-x
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 20
        StartPage: 1763
    Subjects:
      – SubjectFull: Salinity
        Type: general
      – SubjectFull: Estuaries
        Type: general
      – SubjectFull: Chondrichthyes
        Type: general
      – SubjectFull: Marine resources conservation
        Type: general
      – SubjectFull: Larvae
        Type: general
      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Brackish waters
        Type: general
      – SubjectFull: Habitat conservation
        Type: general
    Titles:
      – TitleFull: Salinity-driven habitat use of marine-estuarine batoids on the Amazon Coast.
        Type: main
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            NameFull: Palmeira-Nunes, Ana Rita Onodera
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            NameFull: Hauser-Davis, Rachel Ann
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          Dates:
            – D: 01
              M: 11
              Text: Nov2025
              Type: published
              Y: 2025
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              Value: 108
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