IDEAS home Printed from https://ideas.repec.org/a/bla/agecon/v56y2025i2p210-227.html
   My bibliography  Save this article

Contaminated water spillovers or peer effects? Determinants of disease outbreaks in shrimp farming in Vietnam

Author

Listed:
  • Aya Suzuki
  • Susan Olivia
  • Vu Hoang Nam
  • Guenwoo Lee

Abstract

Disease outbreaks are one of the major issues in the aquaculture sector and can lead to significant economic losses. Although the source of the disease is difficult to trace, understanding how it occurs is important to mitigate the problem. A crucial factor that has not received sufficient attention is the presence of spillovers among fish farmers connected by waterways. This study examines the presence of spillovers among shrimp farmers in Southern Vietnam based on primary data. In particular, it quantifies the effects of contaminated water spillovers from one farm to another and the peer effects of farming practices among neighbors. We solve the reflection problem by employing a method developed in social network analyses. The findings indicate that a farmer's practices are affected by their neighbors’ farming practices. Further, the disease outbreak in a farmer's pond is affected by those in their neighbors’ ponds, even after controlling for contextual peer effects and correlated effects. The negative effects of neighbors’ ponds on the probability of disease outbreaks in a farmer's pond may offset the positive effects of the farmer's good farming practices, suggesting the importance of considering neighboring farmers as a group when addressing the issue of disease control.

Suggested Citation

  • Aya Suzuki & Susan Olivia & Vu Hoang Nam & Guenwoo Lee, 2025. "Contaminated water spillovers or peer effects? Determinants of disease outbreaks in shrimp farming in Vietnam," Agricultural Economics, International Association of Agricultural Economists, vol. 56(2), pages 210-227, March.
  • Handle: RePEc:bla:agecon:v:56:y:2025:i:2:p:210-227
    DOI: 10.1111/agec.12872
    as

    Download full text from publisher

    File URL: https://doi.org/10.1111/agec.12872
    Download Restriction: no

    File URL: https://libkey.io/10.1111/agec.12872?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:bla:agecon:v:56:y:2025:i:2:p:210-227. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Wiley Content Delivery (email available below). General contact details of provider: https://edirc.repec.org/data/iaaeeea.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.