Ultrastructure of spermiogenesis and spermatozoa of Discocotyle sagittata (Monogenea: Polyopisthocotylea: Discocotylinea) [PDF]
Folia Parasitologica, 2001 Ultrastructural analysis revealed that the spermatozoon of Discocotyle sagittata (Leuckart, 1842) is composed of two parallel axonemes, mitochondrion, nucleus and cortical microtubules. The nucleus, which occupies a central/distal position and has an unusual crescent-shaped profile, is slightly shorter than the mitochondrial rod.
Cable, J, Tinsley, RC
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Morphological identification tools of Pseudodiscocotyla opakapaka and Kannaphallus raphidium (Monogenea: Polyopisthocotylea) from Acanthopagrus bifasciatus (Spariformes: Sparidae) [PDF]
Arquivo Brasileiro de Medicina Veterinária e ZootecniaFish is considered one of the nutritive protein sources affected by various parameters including parasitism. Monogeneans are an ectoparasitic species infecting fish’s skin, fins, and gills.
G. Alojayri +3 more
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Experimental transmission of Sparicotyle chrysophrii (Monogenea: Polyopisthocotylea) to gilthead seabream (Sparus aurata) and histopathology of the infection [PDF]
Folia Parasitologica, 2009 The polyopisthocotylean Sparicotyle chrysophrii (Van Beneden et Hesse, 1863) was experimentally transmitted to gilthead seabream (Sparus aurata L.) by exposure to eggs (EGT) and by cohabitation with naturally parasitized fish (CT). In EGT trials, the infection was successfully transmitted by introducing containers with monogenean eggs in the fish tanks,
Sitjà-Bobadilla, Ariadna +1 more
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Revue bibliographique. Ultrastructure des Monogènes : liste des espèces et des organes étudiés
Knowledge and Management of Aquatic Ecosystems, 1993 Les données bibliographiques (plus de 180 références) concernant l'ultrastructure des monogènes, en microscopie électronique à balayage (MEB) et microscopie électronique à transmission (MET), sont présentées sous la forme de deux listes.
JUSTINE J-L.
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Hypothèse sur l’origine biogéographique deDiplozoon(Monogenea, Polyopisthocotylea) [PDF]
Annales de Parasitologie Humaine et Comparée, 1988 SUMMARY. The evolutionary geographic origin of Diplozoon and Octomacrum (Monogenea, Polyopisthocotylea) is discussed. Diplozoon occurs in Eurasia and Africa, whereas the distribution of Octomacrum is limited to North-America. These two monogeneans likely had a common proge nitor originating from the Pacific.
A. Lambert, N. Le Brun
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New records of nine monogenean parasites infesting non‐native freshwater fish species in New Zealand
New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1052-1068, December 2025.ABSTRACT Twenty‐one non‐native freshwater fish species have established populations in New Zealand, yet only two have been reported with monogenean infestations; grass carp, Ctenopharyngodon idella (Valenciennes in Cuvier and Valenciennes, 1844) and western mosquitofish, Gambusia affinis (Baird and Girard, 1853), each with two identified monogenean ...
Ethan D. Renner, Ian C. Duggan
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Observations on the food and the gut pigment of the Polyopisthocotylea (Trematoda: Monogenea)
Parasitology, 1954 1. It has been shown by spectroscopic and histochemical methods that eight representative species of Polyopisthocotylea feed mainly on the blood of their hosts.2. The blood is probably haemolysed fairly rapidly and subsequently absorbed by amoeboid ingestion, the globin moiety of the haemoglobin forming the chief nutriment of the parasite and the ...
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Aquaculture Research, Volume 2025, Issue 1, 2025.The increase in fish production in aquaculture reflects the growth of the world population. However, this expansion is accompanied by challenges, such as the intensification of production systems through increased stocking density, which induces stress in fish, weakening their immune system and making them more susceptible to disease outbreaks ...
Maria Carolina Ribeiro +5 more
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Reviews in Aquaculture, Volume 16, Issue 1, Page 287-308, January 2024.Sparicotylosis has been present in Mediterranean aquaculture of the gilthead seabream for the past 25 years, yet disease management and treatments are not effective. This is further jeopardised by global warming and resistance of Sparicotyle chrysophrii to available anthelminthic compounds.
Ivona Mladineo +5 more
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Ultrastructure of spermiogenesis and spermatozoa ofPolylabroides australis(Platyhelminthes, Monogenea, Polyopisthocotylea, Microcotyudae) [PDF]
Parasite, 1994 Testis follicles are surrounded by a sheath and conlain several stages of spermatogenesis. Primary spermatocytes have large nuclei with a loose granular appearance and synaptonemal complexes, and their densely packed cell bodies are small and rich in mitochondria.
K. Rohde, N.A. Watson
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