First record of parasitic isopod Mothocya melanosticta (Schiödte and Meinert, 1884) (Isopoda: Cymothoidae) on blue flying fish Exocoetus volitans and Indian sardine Sardinella sindensis from the southeast coast of India.

  • P. Vigneshwaran
  • S. RavichandranEmail author
  • Melissa B. Martin
  • D. Karthick Rajan


Cymothoid isopods are parasitic crustaceans of fishes that can cause considerable damage to their host. The first record of Mothocya melanosticta (Schiöedte and Meinert 1884) parasitizing blue flying fish Exocoetus volitans Linnaeus 1758 and Indian sardine Sardinella sindensis (Day, 1878) is here reported from the southeast coast of India. The species M. melanosticta has not been previously reported on members of the Clupeidae family of fishes. Mothocya melanosticta occurs in the Indian and Pacific oceans, with a new locality from India in this present study. Collected cymothoiids ranged from a moderate body size of 14.7─17.0 mm (ovigerous female) and 8.1─10.2 mm (male). Mothocya melanosticta is recognized by the rostrum moderately produced and folded back, coxae 2─5 progressively longer than wide, coxae 6 and 7 distinctly rounded, short pleotelson, pleopods 3─5 endopods with moderately developed proximomedial lobes and pleopods 5 larger in size than pleopods 4.


Cymothoid Isopod Mothocya Fish parasites New host Indian coast 



We are thankful to Dr. Niel Lucien Bruce for his help on isopod identification. This research was financially supported by the Department of Science and Technology (SB/SO/AS/063/2013), Government of India. The comments provided by the anonymous reviewers are gratefully acknowledged.


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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • P. Vigneshwaran
    • 1
  • S. Ravichandran
    • 1
    Email author
  • Melissa B. Martin
    • 2
  • D. Karthick Rajan
    • 1
  1. 1.Centre of Advanced Study in Marine BiologyAnnamalai UniversityParangipettaiIndia
  2. 2.School of Marine and Environmental SciencesUniversiti of Malaysia TerengganuKuala TerengganuMalaysia

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