New insights on Pomphorhynchus sphaericus Gil de Pertierra, Spatz et Doma, 1996 (Acanthocephala: Pomphorhynchidae)
Por:
Montes, Martin Miguel, Arredondo, Nathalia J., Marcotegui, Paula, Ferrari, Walter, Solari, Agustin, Martorelli, Sergio Roberto
Publicada:
1 nov 2021
Ahead of Print:
1 oct 2021
Resumen:
The finding of Pomphorhynchus sphaericus in new localities from La Plata
River allowed the reevaluation of the species using a taxonomic
integrative approach. The newly found specimens in Pimelodus maculatus
from Samborombon Bay differ from P. sphaericus by the roots of hooks 1-6
which not form a wide sheet split into 2 apophysis, the slender,
separated and equatorial testicles, the position of the cement glands,
the shape of the proboscis, the shape and length of lemnisci, and the
eggs size. Despite the notorious observed morphological differences, the
COI mtDNA analysis confirmed that Pomphorhynchus individuals are the
same conspecific, and showed that there is a high phenotypical
plasticity in this species. Pomphorhynchus sphaericus is the first South
American species analyzed to a DNA level (COI mtDNA, ITS, and 18S rDNA
genes). The molecular analysis relates P. sphaericus to P. bulbocolli
and P. purhepechus.
Filiaciones:
Univ Nacl La Plata, Ctr Estudios Parasitol Vectores CEPAVE, Consejo Nacl Invest Cient Tecn, Calle 2 584, RA-1900 Buenos Aires, DF, Argentina
Univ Buenos Aires, Lab Sist & Biol Parasitos Org Acuaticos, Inst Biodiversidad & Biol Expt Aplicada IBBEA CON, Fac Ciencias Exactas & Nat, Ciudad Univ Pab II 4 Piso,Int Guiraldes 2160, Buenos Aires, DF, Argentina
UNAM, CONICET, Inst Biol Subtrop, RA-1033 Buenos Aires, DF, Argentina
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