ArticleSystematic parasitology2026
New species of Urocleidoides (Monopisthocotyla: Dactylogyridae) from Cyphocharax spilurus (Osteichthyes: Curimatidae) from the Nanay River, Peru.
Article in Systematic parasitology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Parasitological studies on Cyphocharax spp. from different regions of South America, have recorded different species of Urocleidoides Mizelle & Price, 1964 parasitizing their gills. To date, no parasites have been documented for Cyphocharax spilurus (Günther) from the Peruvian Amazonia. Thus, the main objective of the present study was to survey the monopisthocotylan parasites from the gills of C. spilurus collected in the Peruvian Amazonia. Twenty specimens of C. spilurus were collected from the Nanay River, Loreto, Peru. Parasites were removed from the gills using dissection needles and cleared in Hoyer's medium for the study of sclerotized structures. Two new species were described: Urocleidoides nanayensis n. sp. characterized by the male copulatory organ consisting in an elongated sclerotized tube forming a loop-like reservoir at its base, and an articulated accessory piece bearing a multi-pronged terminal apparatus with hook-like projections. The vaginal sclerite is can-opener-shaped, and the haptor presents unequal ventral and dorsal anchors with poorly developed roots; hooks are arranged in seven pairs: pairs I and V share a similar shape with elongated filaments, while pairs II-IV and VI-VII are composed of two subunits with straight shanks and short filaments. Urocleidoides loretoensis n. sp. is characterized by the shape of the MCO, which consists in a knife-blade-shaped with a cone-shaped base and a smoothly arched, needle-tipped sclerotized tube, and an articulated accessory piece bearing a stippled central rod with a curved branch and fan-like membranous sheath. The vaginal sclerite is irregular, with a ventrally directed process, arched lamina, and recurved distal end. The haptor presents unequal ventral and dorsal anchors with poorly developed roots; the ventral bar is straight and robust while the dorsal bar is slender with a small mid-region projection. Hook pairs I and V are morphologically distinct from the remaining pairs (II-IV and VI-VII), which share an erect thumb, slightly curved shank, and short filament. The discovery of two new species of Urocleidoides brings the number of valid species in the genus to 67 and constitutes the first parasitological record for C. spilurus; it also represents the first species of the genus described in a curimatid host from the Peruvian Amazon.
Indexed as
Identifiers
42873322What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.