Detection of Paragonimus mexicanus (Trematoda) metacercariae in crabs from Oaxaca, Mexico

Acta Trop. 2014 Sep:137:95-8. doi: 10.1016/j.actatropica.2014.05.004. Epub 2014 May 16.

Abstract

Metacercariae of Paragonimus mexicanus were collected in crabs Tehuana guerreroensis (Rathbun, 1933) in the municipality of Putla, Oaxaca, Mexico. Metacercariae were found in 20.8% of the crabs collected, with an average of 1.9 metacercarie per crab. Stained metacercariae showed the specific characteristics of P. mexicanus by morphology and sequencing a fragment of the 28S ribosomal gene obtained by PCR. These findings reveal that T. guerreroensis is an intermediate host for P. mexicanus; this new report is relevant considering the potential risk of transmission in the states of Oaxaca and Guerrero, Mexico.

Keywords: Crabs; Metacercariae; Paragonimus mexicanus; Tehuana.

MeSH terms

  • Animals
  • Base Sequence
  • Brachyura / parasitology*
  • Cluster Analysis
  • DNA, Helminth / chemistry
  • DNA, Helminth / genetics
  • DNA, Ribosomal / chemistry
  • DNA, Ribosomal / genetics
  • Metacercariae / classification
  • Metacercariae / genetics
  • Metacercariae / isolation & purification*
  • Mexico
  • Microscopy
  • Molecular Sequence Data
  • Paragonimus / anatomy & histology
  • Paragonimus / classification
  • Paragonimus / genetics
  • Paragonimus / isolation & purification*
  • Phylogeny
  • RNA, Ribosomal, 28S / genetics
  • Sequence Analysis, DNA

Substances

  • DNA, Helminth
  • DNA, Ribosomal
  • RNA, Ribosomal, 28S