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Grant support

This work was partly sponsored by FarmBill grant (AP21PPQS&T00C169/21-0425-000-FR) . Authors thank J. Burbridge for technical assistance, Dr S. Latham for providing fungal cultures and Dr J. Chitambar for critical reading of the manuscript draft. The first author is also especially grateful for the financial support received from "Accion financiada por la Comunidad de Madrid en el marco del Convenio Plurianual con la Universidad Rey Juan Carlos en la linea de actuacion 1, Programa de "Estimulo a la investigacion de jovenes doctores". Ref. proyectoM2730 Acronimo NEMAVID".

Analysis of institutional authors

Alvarez-Ortega, SergioCorresponding Author

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November 22, 2024
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Cotylenchus cleo gen. n., sp. n., a new plant-parasitic nematode (Tylenchida: Anguinidae) parasitising on leaves of western sword fern plants from rainforests in Washington State, USA

Publicated to:Nematology. 26 (5): 579-592 - 2024-05-01 26(5), DOI: 10.1163/15685411-bja10325

Authors: alvarez-ortega, Sergio; Subbotin, Sergei A

Affiliations

Calif Dept Food & Agr, Plant Pest Diag Ctr, 3294 Meadowview Rd, Sacramento, CA 95832 USA - Author
Russian Acad Sci, Ctr Parasitol AN Severtsov, Inst Ecol & Evolut, Leninskii Prospect 33, Moscow 117071, Russia - Author
Univ Rey Juan Carlos, Dept Biol & Geol, Fis & Quim Inorgan, Campus Mostoles 2, Madrid 28933, Spain - Author

Abstract

A new genus and species of anguinid nematode, Cotylenchus cleo gen. n., sp. n., was recovered from leaves of the western sword fern, Polystichum munitum, growing in rainforests in several locations of Olympic National Park, Washington State, USA. This new anguinid nematode induced distinct necrotic and chlorotic symptoms on fern leaves characterised by yellowing, light to brown areas between veins. The new species is characterised by a long and slender body, six incisures in the lateral field, robust stylet (12.013.5 mu m) with large and rounded knobs, pyriform to elongate and abutting basal pharyngeal bulb, and long conical tail with pointed terminus; females having posteriorly located vulva (V = 74-80%) and well-developed post-vulval uterine sac (26-59 mu m) and males having spicules 20-23 mu m long. Phylogenetic analysis of the partial 18S rRNA and the D2-D3 expansion segments of the 28S rRNA genes showed that this anguinid nematode formed a separate evolutionary lineage different from all other Anguinidae taxa. The new species was also characterised by sequencing the ITS rRNA and COI genes.

Keywords

FernLeaf necrosisNew genusNew speciesPhylogenyTaxonomTaxonomy

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Nematology due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 84/181, thus managing to position itself as a Q2 (Segundo Cuartil), in the category Zoology. Notably, the journal is positioned en el Cuartil Q2 para la agencia Scopus (SJR) en la categoría Agronomy and Crop Science.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-07-08:

  • WoS: 1

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-08:

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 1.5.
  • The number of mentions on the social network X (formerly Twitter): 2 (Altmetric).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Russia; United States of America.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Álvarez Ortega, Sergio) .

the author responsible for correspondence tasks has been Álvarez Ortega, Sergio.