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''Calydiscoides euzeti'' is a species of
The species is distinguished from other species of the
It is
monogenea
Monogeneans, members of the class Monogenea, are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they ...
n of the family Diplectanidae
The Diplectanidae are a family of monopisthocotylean monogeneans. They are all parasitic on the gills of fish (marine or freshwater). Diplectanids are small animals, generally around 1 mm in length. As parasites, they can be extremely numero ...
.
As all members of the family Diplectanidae
The Diplectanidae are a family of monopisthocotylean monogeneans. They are all parasitic on the gills of fish (marine or freshwater). Diplectanids are small animals, generally around 1 mm in length. As parasites, they can be extremely numero ...
, it has a single posterior testis
A testicle or testis ( testes) is the gonad in all male bilaterians, including humans, and is Homology (biology), homologous to the ovary in females. Its primary functions are the production of sperm and the secretion of Androgen, androgens, p ...
and a single ovary
The ovary () is a gonad in the female reproductive system that produces ova; when released, an ovum travels through the fallopian tube/ oviduct into the uterus. There is an ovary on the left and the right side of the body. The ovaries are end ...
that wraps the lateral caecum of the intestine.
As all members of the genus ''Calydiscoides
''Calydiscoides'' is a genus of monopisthocotylean monogeneans, included in the family Diplectanidae.
The genus currently includes 16 species, which are all parasitic on the gills of marine fish of the family Lethrinidae and Nemipteridae. All ...
'', it is characterized by the presence of lamellodisc
Lamellodiscs are epidermal structures, which are typical of and found only in certain monogeneans of the family Diplectanidae. There are, typically, two lamellodiscs, one ventral and one dorsal, located on the haptor of the monogenean. Lamellodis ...
s, which are specialized attachment organs made up of concentric lamellae, on the posterior part of its body.
The species is distinguished from other species of the
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
''Calydiscoides
''Calydiscoides'' is a genus of monopisthocotylean monogeneans, included in the family Diplectanidae.
The genus currently includes 16 species, which are all parasitic on the gills of marine fish of the family Lethrinidae and Nemipteridae. All ...
'' by the shape and size of its male copulatory organ, which is elongate in shape with an anterior curved whip, and 70–83 μm in length.
It is ectoparasite
Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted str ...
on the gills of two species of marine fish, emperors
The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife ( empress consort), mother/grandmother (empress dowager/ grand empress dowager), or a woman who rule ...
, namely the spotcheek emperor ''Lethrinus rubrioperculatus
''Lethrinus rubrioperculatus'',the spotcheek emperor, red-eared emperor, red-ears, red-edged emperor, scarlet-cheek emperor, and spot cheek emperor, is a species of marine ray-finned fish
Actinopterygii (; ), members of which are known as ray ...
'' and the Yellowlip emperor '' Lethrinus xanthochilus''. It has been found off New Caledonia
New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t ...
, in the South Pacific Ocean.
The name of the species, ''euzeti'', means that it was named in honour of Professor Louis Euzet
Louis Euzet (27 July 1923 in Lézignan-Corbières, France – 24 September 2013 in Sète, France) was a French parasitologist.
Education
Louis Euzet was a high-school student in Narbonne, France, and a student of the University of Montpelli ...
, a famous French parasitologist.
References
{{Taxonbar, from=Q2326722 Diplectanidae Animals described in 2007