Skip to main content


Log in

First Data on the Parasites of the Pacific Kingcroaker Menticirrhus elongatus (Perciformes: Sciaenidae): Description of a New Species of Rhamnocercoides (Dactylogyridea: Diplectanidae)

  • Original Paper
  • Published:
Acta Parasitologica Aims and scope Submit manuscript



A new monogenean, Rhamnocercoides lambayequensis n. sp. (Dactylogyridea: Diplectanidae), is described based on the specimens collected from the gills of the Pacific kingcroaker Menticirrhus elongatus (Günther 1864) (Perciformes: Sciaenidae), a demersal fish endemic to Eastern Pacific, captured off the South American Pacific coast, Lambayeque Region, Peru.

Materials and Methods

Monogeneans were fixed in hot 4% formalin. Some monogeneans were transferred directly onto a slide in a drop of glycerin–ammonium picrate mixture (GAP). Others were mounted stained with Gomori’s trichrome in Canada balsam. Drawings were made using of a drawing tube.


The new species is mainly characterized by its MCO, which is tubular and straight, with external (distally expanded and bifurcated) and internal tubes (distally uncovered by external tube). Rhamnocercoides lambayequensis n. sp. is also characterized by having the following features: a weakly sclerotized almost pyriform vagina; haptoral acicular spines with expanded distal portion and by having a small group of haptoral accessory spines associated with haptoral lobes arranged as spikes.


This is the first data on the parasites of M. elongatus, a little known, but popular fish in local markets. The present finding brings to two, the number of known species of Rhamnocercoides Luque and Iannacone 1991, and represents the sixth described marine diplectanid species infecting sciaenid fishes from Peru.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1

Similar content being viewed by others


  1. Jiménez-Prado, P., Béarez, P. 2004. Peces Marinos del Ecuador continental. Tomo 2: Guía de Especies / Marine fishes of continental Ecuador. Volume 2: Species Guide. SIMBIOE/NAZCA/IFEA.

  2. Robertson DR, Allen GR (2006) Shore fishes of the tropical eastern Pacific: an information system. Smithsonian Tropical Research Institute, Balboa, Panamá

    Google Scholar 

  3. Chirichigno N, Vélez M (1998) Clave para identificar los peces marinos del Perú. Publicación Especial del Instituto del Mar, Perú

    Google Scholar 

  4. Chirichigno N, Cornejo RM (2001) Catálogo comentado de los peces marinos del Perú. Publicación Especial del Instituto del Mar, Perú, p 314

    Google Scholar 

  5. Cohen SC, Justo MCN, Kohn A (2013) South American Monogenoidea parasites of fishes, amphibians and reptiles. Oficina de Livros, Rio de Janeiro, p 663

    Google Scholar 

  6. Luque JL, Cruces C, Chero J, Paschoal F, Alves PA, Silva AC, Sanchez L, Iannacone J (2016) Checklist of Metazoan parasites of fishes from Peru. Neotrop Helminthol 10:301–375

    Google Scholar 

  7. Mendoza-Garfias B, García-Prieto L, Pérez-Ponce de León G (2017) Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates. Zoosystema 39:501–598.

    Article  Google Scholar 

  8. Ergens R (1969) The suitability of ammonium picrate-glycerin in preparing slides of lower Monogenoidea. Folia Parasitol 16:320

    Google Scholar 

  9. Mizelle JD (1936) New species of trematodes from the gills of Illinois fishes. Am Midl Nat 17:785–806.

    Article  Google Scholar 

  10. Mizelle JD, Price CE (1963) Additional haptoral hooks in the genus Dactylogyrus. J Parasitol 19:785–806.

    Article  Google Scholar 

  11. Bush AO, Lafferty KD, Lotz JM, Shostak AW et al (1997) Parasitology meets ecology on its own terms: Margolis et al. revisited. J Parasitol 83:575–583.

    Article  CAS  PubMed  Google Scholar 

  12. Chero JD, Cruces CL, Sáez G, Iannacone J, Luque JL (2017) Diplectanids (Monogenea) parasitic on sciaenid fish from Peru with the proposal of Pseudorhamnocercoides n. gen., the description of Rhamnocercus dominguesi n. sp. and the redescription of Rhamnocercoides menticirrhi Luque and Iannacone, 1991. Acta Parasitol 62:541–548.

    Article  CAS  PubMed  Google Scholar 

  13. Luque JL, Iannacone J (1991) Rhamnocercidae (Monogenea: Dactylogyroidea) in Sciaenid fishes from Perú, with description of Rhamnocercoides menticirrhi n. gen, n. sp. and two new species of Rhamnocercus. Rev Biol Trop 39:193–201

    Google Scholar 

  14. Luque JL (1996) Distribución transversal y asociaciones interespecíficas en las comunidades de metazoarios ectoparásitos de peces esciénidos marinos del Perú. Rev Biol Trop 44:383–390

    CAS  PubMed  Google Scholar 

  15. Luque JL, Oliva ME (1999) Metazoan parasites infracommunities of Menticirrhus (Teleostei: Sciaenidae): an amphi-oceanic approximation. J Parasitol 85:379–381.

    Article  CAS  PubMed  Google Scholar 

  16. Knoff M, Cohen SC, Cárdenas MQ, Cárdenas-Callirgos JM, Gomes DC (2015) A new species of diplectanid (Monogenoidea) from Paranthias colonus (Perciformes, Serranidae) off Peru. Parasite 22:11.

    Article  PubMed  PubMed Central  Google Scholar 

  17. Iannacone J, Luque JL (1993) New records of helminths parasitic on Peruvian Amazonian fishes (Osteichthyes). Rev Biol Trop 41:3030–3305

    Google Scholar 

  18. Froese, R., Pauly, D. 2021. FishBase. World Wide Web electronic publication. Accessed on 12 January, 2021

Download references


We thank Lidia Sánchez (MUSM) for allowing us access to specimens under their care. The authors are grateful to the following people who helped to the collection of fishes in Peru: Ivette Cuellar, Eva G. Huancachoque, Alexander Reyes, Milagros Carrillo, and Cynthia E. Rodríguez, all from the National University Federico Villarreal (UNFV). Jhon D. Chero and Celso L. Cruces were supported by a student fellowship from the Coordenação de Aperfeiçoamento de Pessoal do Ensino Superior, Brazil (CAPES)—Finance Code 001. José L. Luque was supported by a Researcher fellowship from the Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil (CNPq).

Author information

Authors and Affiliations



The study was designed by JDC, CLC, and JLL. Collection of parasites was performed by JDC, CLC, and GS. Laboratories were performed by JDC, CLC, and GS. The manuscript was written by JDC and CLC and subsequently revised by all other authors.

Corresponding author

Correspondence to José L. Luque.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All applicable institutional, national, and international guidelines for the care and use of animals were followed.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Chero, J.D., Cruces, C.L., Sáez, G. et al. First Data on the Parasites of the Pacific Kingcroaker Menticirrhus elongatus (Perciformes: Sciaenidae): Description of a New Species of Rhamnocercoides (Dactylogyridea: Diplectanidae). Acta Parasit. 66, 1246–1250 (2021).

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: