The Diplectanidae are a family of
monopisthocotylea
The Monopisthocotylea are an inferior class of parasitic flatworms in the class Monogenea.WoRMS (2019). Monopisthocotylea. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=119219 on 2019-02-08
Yamaguti, S. (1963). Systema Helmi ...
n
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 ...
ns. They are all parasitic on the
gill
A gill () is a respiration organ, respiratory organ that many aquatic ecosystem, aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow r ...
s of
fish
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...
(marine or freshwater). Diplectanids are small animals, generally around 1 mm in length. As
parasite
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 ...
s, they can be extremely numerous, up to several thousand on an individual fish.
History
The family Diplectanidae was proposed by the Italian parasitologist
Monticelli in 1903 (as subfamily Diplectaninae).
The status of the family and its components was later examined by various authors, including Johnston &
Tiegs (1922), Price (1937),
[Price, E. W. 1937: North American Monogenetic Trematodes. I. The superfamily Gyrodactyloidea ''Journal of the Washington Academy of Sciences'' 27, 146-164]
PDF
Bychowsky (1957),
Yamaguti (1963), and Oliver (1987).
Morphology
Diplectanids are diagnosed by the combination of these three characters:
* Presence of accessory adhesive organs on dorsal and ventral part of the
haptor
The haptor is the attachment organ of the monogeneans, a group of parasitic Platyhelminthes.
The haptor is sometimes called opisthaptor (from ''opistho-'': behind) to emphasize that it is located in the posterior part of the body, and to diffe ...
, called
squamodisc
Squamodiscs are epidermal structures, which are typical of and found only in certain monogeneans of the family Diplectanidae. There are, typically, two squamodiscs, one ventral and one dorsal, located on the haptor of the monogenean. Squamodiscs ...
s when they are made up of rodlets and
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 when they include lamellae
* In the haptor, three transversal bars (one ventral, two lateral (dorsal), connected to two pairs of hooks (one pair dorsal, one pair ventral)
* A germarium (or ovary) which is anterior to the testis and loops around the right intestinal caecum
Genera
The genera recognized in WoRMS are:
* ''
Acanthocercodes''
Kritsky & Diggles, 2015
* ''
Acleotrema''
Johnston & Tiegs, 1922
* ''
Aetheolabes''
Boeger & Kritsky, 2009
* ''
Anoplectanum''
Boeger, Fehlauer & Marques, 2006
* ''
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 ...
''
Young, 1969
* ''
Darwinoplectanum''
Domingues, Diamanka & Pariselle, 2011
* ''
Diplectanocotyla''
Yamaguti, 1953
* ''
Diplectanum''
Diesing, 1858 [Diesing, K. M. 1858. Revision der Myzhelminthen. Abtheilung: Trematoden. ''Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Wien :K.-K. Hof-und Staatsdruckerei in Commission bei Karl Gerold's Sohn.'' pp. 307-39]
Biodiversity Heritage Library
* ''
Echinoplectanum''
Justine & Euzet
Euzet (; ) is a commune in the Gard department in southern France.
Population
See also
*Communes of the Gard department
*Occitania (administrative region)
Occitania ( ; ; ) is the southernmost Regions of France, administrative region ...
, 2006
* ''
Furcohaptor
''Furcohaptor'' is a genus of monopisthocotylean monogeneans, belonging to the family Diplectanidae.WoRMS (2018). Furcohaptor Bijukumar & Kearn, 1996. Accessed at: http://marinespecies.org/aphia.php?p=taxdetails&id=717363 on 2018-09-16 All known ...
''
Bijukumar & Kearn, 1996
* ''
Lamellodiscus
''Lamellodiscus'' is a genus of monopisthocotylean monogeneans in the family Diplectanidae; all species of ''Lamellodiscus'' are small worms, Fish diseases and parasites, parasitic on the gills of teleost fish.
The type-species of the genus is ' ...
''
Johnston & Tiegs, 1922
* ''
Latericaecum
''Latericaecum'' is a genus of monopisthocotylean monogeneans, belonging to the family Diplectanidae
The Diplectanidae are a family of monopisthocotylean monogeneans. They are all parasitic on the gills of fish (marine or freshwater). Diplecta ...
''
Young, 1969
* ''
Laticola
''Laticola'' is a genus of monopisthocotylean monogeneans, belonging to the family Diplectanidae.WoRMS (2018). Laticola Yang, Kritsky, Sun, Zhang, Shi & Agrawal, 2006. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=517965 on ...
''
Yang, Kritsky, Sun, Zhang, Shi & Agrawal, 2006
* ''
Lepidotrema''
Johnston & Tiegs, 1922
* ''
Lobotrema
''Lobotrema'' is a genus of monopisthocotylean monogeneans, belonging to the family Diplectanidae.Tripathi, Y. R. (1959). Monogenetic trematodes from fishes of India. Indian Journal of Helminthology, 9(1/2), 1-149. All its species are Fish diseas ...
''
Tripathi, 1959
* ''
Monoplectanum''
Young, 1969
* ''
Murraytrema''
Price, 1937
* ''
Murraytrematoides''
Yamaguti, 1958
* ''
Nasobranchitrema''
Yamaguti, 1965
* ''
Neodiplectanum''
Mizelle & Blatz, 1941
* ''
Oliveriplectanum''
Domingues & Boeger, 2008
* ''
Paradiplectanum
''Paradiplectanum'' is a genus of monopisthocotylean monogeneans in the family Diplectanidae.WoRMS (2018). Paradiplectanum Domingues & Boeger, 2008. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=517974 on 2018-12-23
Domingue ...
''
Domingues & Boeger, 2008
* ''
Protolamellodiscus''
Oliver, 1969 [Oliver G., 1969. Recherches sur les Diplectanidae (Monogenea) parasites de Téléostéens du Golfe du Lion. II. Lamellodiscinae nov. sub-fam. Vie & Milieu. 20 (l-A): 43-72.]
* ''
Pseudodiplectanum''
Tripathi, 1955
* ''
Pseudolamellodiscus''
Yamaguti, 1953 [ ]
* ''
Pseudomurraytrematoides''
Domingues & Boeger, 2008
* ''
Pseudorhabdosynochus
''Pseudorhabdosynochus'' is a genus of monopisthocotylean monogeneans, included in the family Diplectanidae. The type-species of the genus is ''Pseudorhabdosynochus epinepheli'' ( Yamaguti, 1938).
The genus includes more than 80 species, which a ...
''
Yamaguti, 1958
* ''
Pseudorhamnocercoides''
Chero, Cruces, Sáez, Iannacone & Luque, 2017
* ''
Rhabdosynochus''
Mizelle & Blatz, 1941
* ''
Rhamnocercoides''
Luque & Iannacone, 1991
* ''
Rhamnocercus''
Monaco, Wood & Mizelle, 1954
* ''
''
Zhang in Zhang, Yang & Liu, 2001
* ''
Spinomatrix''
Boeger, Fehlauer & Marques, 2006
* ''
Telegamatrix''
Ramalingam, 1955
* ''
Teraplectanum''
Lim, 2015
References
{{Taxonbar, from=Q5017475
Platyhelminthes families
Animal parasites of fish
Taxa described in 1903
Taxa named by Francesco Saverio Monticelli