Mandibular Odontogenic Fibrosarcoma in Pickhandle Barracuda (Sphyraena jello Cuvier, 1829)

  • Vijayapoopathi Singaravel
  • Ayyaru Gopalakrishnan
  • Kuzhanthaivel Raja
  • Ramalingam Vijayakumar


The spontaneous occurrence of mandibular odontogenic fibrosarcoma is reported in pickhandle barracuda (Sphyraena jello) from Parangipettai fish landing centre, southeast coast of India. The gross morphology revealed reddish-white, fleshy distended tumours in and around the intraoral bone musculature. The necropsy examination showed no gross evidence of local invasion and distant metastasis into visceral organs. Histopathologically, tumours were characterized by abundant hyperplastic small spindle cells arranged into well-defined interwoven bundles. The spindle cells presented scant fibrillar cytoplasm, and oval to elongated hyperchromatic and pleomorphic nuclei. The ultrastructure of mandibular lesions was composed of differentiated fibroblasts with nuclei enveloped by a thin rim of cytoplasm with denser heterochromatin and lighter euchromatin. Mitotic figures were seen in high numbers of cells, telophase of the karyokinesis was observed. No virus particles were observed in the examined lesions. Based on the histological and ultra-structural findings, this tumour was diagnosed as mandibular odontogenic fibrosarcoma in S. jello.


Neoplasm Barracuda Histopathology Fibrosarcoma 



The authors would like to acknowledge the Ministry of Earth Sciences (MoES), Government of India, New Delhi for financial support for the project entitled “Prevalence and impact of ovarian parasitic nematode infestation on the economically important fishes of Tamil Nadu coast including cages and mariculture facilities” (MoES/36/OOIS/Extra/49/2016) and also acknowledge the Ministry of Environment, Forest and Climate Change (MoEF&CC), Government of India, New Delhi for financial support for the project entitled “Prevalence of tumours in food fishes of Tamil Nadu coast” (D.O. No.22-31/2010-CS-I). The author (Dr. K. Raja) acknowledges the Department of Science and Technology (DST) – Science and Engineering Research Board (SERB) Government of India, New Delhi for financial assistance, in the form of National Post-Doctoral Fellowship (PDF/2016/000584) and the author (Dr. R. Vijayakumar) also acknowledges the Department of Science and Technology (DST) – Science and Engineering Research Board (SERB) Government of India, New Delhi for financial assistance, in the form of National Post-Doctoral Fellowship (PDF/2016/001452/LS).


This study was funded by Ministry of Environment Forest and Climate Change (MoEF&CC) (Grant No. D.O. No.22–31/2010-CS-I) and Ministry of Earth Sciences (MoES) (Grant No. MoES/36/OOIS /Extra/49/2016), Government of India.

Compliance with Ethical Standard

Conflict of Interest

First author (Dr. V. Singaravel), third author (Dr. K. Raja) and fourth author (Dr. R. Vijayakumar) declares that they have no conflict of interest. The second author (Dr. A. Gopalakrishnan) has received research grant from Ministry of Earth Sciences (MoES) and Ministry of Environment, Forest and Climate Change, Government of India.

Ethical Approval

This article does not contain any experimental studies with human participants or animals performed by any of the authors. Tumour-affected fish samples are directly collected from the fisherman at landing centre.

Informed Consent

This article does not contain any studies with human participants.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Vijayapoopathi Singaravel
    • 1
    • 2
  • Ayyaru Gopalakrishnan
    • 1
  • Kuzhanthaivel Raja
    • 3
  • Ramalingam Vijayakumar
    • 4
  1. 1.Centre of Advanced Study in Marine Biology, Faculty of Marine SciencesAnnamalai UniversityParangipettaiIndia
  2. 2.Department of Biotechnology, AVS college of Arts and ScienceSalemIndia
  3. 3.PG & Research Department of ZoologyGovernment Arts CollegeChidambaramIndia
  4. 4.Department of MicrobiologyBharathidasan UniversityTiruchirappalliIndia

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