First record of bicephalism in the blacktip shark Carcharhinus limbatus (Elasmobranchii: Carcharhinidae) in the southern Gulf of Mexico

Wakida-Kusunoki, Armando T. ^[2] ; Anislado-Tolentino, Vicente ^[3] ; Castro-Barbosa, Rodolfo ^[4] ; Del Moral-Flores, Luis Fernando ^[1]
1. [1] Universidad Nacional Autónoma de México
  
  Universidad Nacional Autónoma de México
  
  México
2. [2] Instituto Nacional de Pesca y Acuacultura. Boulevard del Pescador s/n esquina Antigua Carretera a Chelem Yucalpetén, Yucatán, 97320. México
3. [3] Grupo de Investigadores Libres Sphyrna (GILS). Boulevard del CImatario 439. Consteación, Qerétaro, Querétaro. México. 76087
4. [4] Independet Reasearcher.
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Localización: Latin American Journal of Aquatic Research, ISSN-e 0718-560X, ISSN 0716-1069, Vol. 51, Nº. 5, 2023, págs. 685-691
Idioma: inglés
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Resumen
- The first case of bicephalia in a male embryo of the blacktip shark Carcharhinus limbatus in the southern Gulf of Mexico is described. The embryo was found and removed from a pregnant female caught off the coast of Tabasco, Mexico. The specimen had two heads, two dorsal fins, two spine columns conjoined in the pelvic region, two esophagus, and a single stomach.