Open Access
Research Article

Table 1

Studies of sperm ultrastructure in the Polyopisthocotylea.

Family (Alpha. order) Genus, species, author, and host * Sperm reference “Polyopisthocotylean” structure of sperm ** Details **
Axinidae Axine sp. (ex Hemirhamphus brasiliensis) [55] no Only two micrographs; no lateral microtubules
Chauhaneidae Pseudomazocraes cf. monsivaisae [55] Polyopisthocotylean Typical structure; extremity with nucleus + single axoneme
Diclidophoridae Diclidophora merlangi (Kuhn in Nordmann, 1832) Krøyer, 1851 [27] Polyopisthocotylean Includes spermiogenesis; single micrograph shows typical structure
Diclidophoridae Diclidophora merlangi (Kuhn in Nordmann, 1832) Krøyer, 1851 [70] Polyopisthocotylean Single micrograph shows typical structure
Diclidophoridae Diclidophora sp. [105] Polyopisthocotylean Only two micrographs, but typical sections of spermatozoa
Diclidophoridae Choricotyle chrysophryi Van Beneden & Hesse, 1863 [as Choricotyle pagelli] [105] Polyopisthocotylean A single micrograph
Diplozoidae Diplozoon sp.? [as Diplozoon gracile] [39,48] Aberrant No axonemes; numerous parallel microtubules
Discocotylidae Discocotyle sagittata (Leuckart, 1842) [19] Polyopisthocotylean Includes spermiogenesis; crescent-shaped nucleus; lateral flange
Gastrocotylidae Pricea multae Chauhan, 1945 [110] Polyopisthocotylean Includes spermiogenesis; typical section; lateral flange
Gastrocotylidae Gastrocotyle sp. [99] Polyopisthocotylean Includes spermiogenesis; no section with nucleus and both axonemes, but sections with nucleus and single axoneme have the lateral microtubules
Gotocotylidae Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 (as Gotocotyla secunda) [92] dubious Single photograph, without nucleus section
Gotocotylidae Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 [56] Polyopisthocotylean Typical polyopisthocotylean structure with additional undulating membrane
Heteraxinidae Cemocotyle sp. (ex Caranx crysos) [58] Polyopisthocotylean Single micrograph, but typical
Heteraxinidae Heteraxine sp. (ex Scomberomorus tritor) [58] Polyopisthocotylean Several micrographs, typical
Heteraxinidae Heteraxinoides sp. (ex Pomadasys jubelini) [58] dubious Single photograph, not in region of nucleus
Heteraxinidae Gonoplasius sp. (ex Pseudocaranx dentex) [94] Polyopisthocotylean Includes spermiogenesis
Hexabothriidae Erpocotyle catenulata (Guberlet, 1933) [105] Polyopisthocotylean Single micrograph with several sections; electron-lucent nucleus; membranes disrupted; not sure whether lateral microtubules are present
Hexostomatidae Hexostoma sp. (ex Euthynnus alleteratus) [54] Polyopisthocotylean Only three sections shown, but typical
Mazocraeidae Kuhnia sp. (ex Scomber colias [as S. japonicus]) [55] Polyopisthocotylean Only two micrographs; typical structure, additional cytoplasmic microtubules
Microcotylidae Metamicrocotyla macracantha (Alexander, 1954) Koratha, 1955 [9] Polyopisthocotylean Includes spermiogenesis
Microcotylidae Microcotyle sp. [10] Polyopisthocotylean Includes spermiogenesis; only two micrographs depict typical sperm structure
Microcotylidae Polylabroides australis (Murray, 1931) Mamaev & Parukhin, 1976 [95] Polyopisthocotylean Includes spermiogenesis
Microcotylidae Pagellicotyle mormyri (Lorenz, 1878) Mamaev, 1984 [as Microcotyle mormyri] [104,105] Polyopisthocotylean Includes spermiogenesis
Microcotylidae Microcotyle erythrini Van Beneden & Hesse, 1863 [105] Polyopisthocotylean Includes spermiogenesis
Microcotylidae Atrispinum sargi (Parona & Perugia, 1890) Euzet & Maillard, 1974 [as At. “sargui”] [33,34] Polyopisthocotylean Not illustrated
Microcotylidae Atriaster sp. (ex Diplodus cervinus) [37] Polyopisthocotylean Includes spermiogenesis; polygonal nucleus
Microcotylidae Atriaster heterodus Lebedev & Parukhin, 1969 [96] Polyopisthocotylean Includes spermiogenesis; polygonal nucleus
Microcotylidae Microcotyle sp. (ex Abudefduf analogus) [55] Polyopisthocotylean Typical structure; membrane ornamentation
Microcotylidae Sciaenacotyle panceri (Sonsino, 1891) Mamaev, 1989 [as Microcotyle pancerii] [89] Polyopisthocotylean Includes spermiogenesis
Octomacridae Octomacrum lanceatum Mueller, 1934 [28] Polyopisthocotylean Includes spermiogenesis; typical sections
Plectanocotylidae Plectanocotyle gurnardi (Van Beneden & Hesse, 1863) [105] Polyopisthocotylean Only two micrographs, but typical structure well visible
Polystomatidae Neopolystoma spratti Pichelin, 1995 [109] no Includes spermiogenesis; at level of nucleus, the longitudinal microtubules do not form a complete circle
Polystomatidae Pseudodiplorchis americanus Rodgers & Kuntz, 1940) Yamaguti, 1963 [18] no Includes spermiogenesis; sections with nucleus have no lateral microtubules
Polystomatidae Polystoma sp. [68] no Sections with nucleus have no lateral microtubules
Polystomatidae Polystoma sp. [11] dubious Not illustrated; reports absence of peripheral microtubules
Polystomatidae Concinnocotyla australensis (Reichenbach- Klinke, 1966) Pichelin, 1991 [110] Polyopisthocotylean Includes spermiogenesis; annular nucleus section wrapping axonemes; two lateral flanges
Polystomatidae Polystomoides sp. [90,91] dubious No section at the level of nucleus
Protomicrocotylidae Protomicrocotyle ivoriensis Wahl, 1972 [99] Polyopisthocotylean Includes spermiogenesis
Pterinotrematidae Pterinotrema sp. [34] no Not illustrated; the text states that lateral microtubules are absent
Pyragraphoridae Pyragraphorus pyragraphorus (MacCallum & MacCallum, 1913) Sproston, 1946 [55] Polyopisthocotylean Two micrographs; typical structure
Sphyranuridae Sphyranura sp. [34] dubious Not illustrated; based on “personal communication by Oliver and Euzet”
*

The systematic placement of species has been updated when appropriate; the host fish is indicated when the monogenean species was not identified.

**

“Polyopisthocotylean”: The Polyopisthocotylean structure is defined as two axonemes and a continuous row of peripheral microtubules in the region which contains the nucleus; “Aberrant”: special case of Diplozoidae; “Dubious”: available micrographs do not show the Polyopisthocotylean structure; “no”: available micrographs show that the structure is not polyopisthocotylean.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.