Descripción y comparación de la línea lateral de tres especies de rayas eléctricas del género Narcine (Torpediniformes: Narcinidae)
Por:
De la Cruz-Torres, Jonathan, Gonzalez-Acosta, Adrian F., Martinez-Perez, Jose A.
Publicada:
1 jun 2018
Categoría:
Agricultural and biological sciences (miscellaneous)
Resumen:
This study describes the composition and structural arrangement of the lateral line system of three electric ray species (Narcine bancroftii, N. entemedor and N. vermiculatus). All three species showed the supraorbital (SO), infraorbital (IO), hyomandibular (HYO) and posterior lateral line (PLL) canals, less branched compared to other batoids. Narcine entemedor differs from its congeners by the extensive branching of the SO and IO canals, which converge in the inter-orbital region; in N. vermiculatus these canals present a similar condition, but are less branched. In contrast, N. bancroftii has divergent canals (directed outwards from the inter-orbital region). HYO canals are located on the periphery of the electric organs in these species; in N. bancroftii the branches extend towards the posterior region, whereas in the other species are reduced (N. entemedor) or almost absent (N. vermiculatus). The PLL is curved and projected towards the urostyle, it also shows a large number of ramifications, except in N. vermiculatus. Information about the LL canal system arrangement and pore number in Narcine can be useful for the taxonomic distinction of its species, as it has been corroborated in other Torpediniformes. © 2018, Universidad de Costa Rica. All rights reserved.
Filiaciones:
De la Cruz-Torres, Jonathan:
Univ Nacl Autonoma Mexico, ICMyL, Posgrad Ciencias Mar & Limnol, Circuito Exterior S-N Ciudad Univ, Mexico City 04510, DF, Mexico
Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Av Inst Politecn Nacl S-N, La Paz 23096, Baja Calif Sur, Mexico
Gonzalez-Acosta, Adrian F.:
Inst Politecn Nacl, Ctr Interdisciplinario Ciencias Marinas, Av Inst Politecn Nacl S-N, La Paz 23096, Baja Calif Sur, Mexico
Martinez-Perez, Jose A.:
UNAM, Fac Estudios Super Iztacala, Lab Zool, Av Barrios 1, Tlalnepantla 54090, Estado De Mexic, Mexico
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