Ceratothoa carinata

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Hadfield K, Bruce N, Smit N (2016) Redescription of poorly known species of Ceratothoa Dana, 1852 (Crustacea, Isopoda, Cymothoidae), based on original type material. ZooKeys (592) : 39–91, doi. Versioned wiki page: 2016-05-25, version 98006, https://species-id.net/w/index.php?title=Ceratothoa_carinata&oldid=98006 , contributors (alphabetical order): Pensoft Publishers.

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BibTeX:

@article{Hadfield2016ZooKeys,
author = {Hadfield, Kerry A. AND Bruce, Niel L. AND Smit, Nico J.},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {Redescription of poorly known species of Ceratothoa Dana, 1852 (Crustacea, Isopoda, Cymothoidae), based on original type material},
year = {2016},
volume = {},
issue = {592},
pages = {39--91},
doi = {10.3897/zookeys.592.8098},
url = {http://zookeys.pensoft.net/articles.php?id=8098},
note = {Versioned wiki page: 2016-05-25, version 98006, https://species-id.net/w/index.php?title=Ceratothoa_carinata&oldid=98006 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Redescription of poorly known species of Ceratothoa Dana, 1852 (Crustacea, Isopoda, Cymothoidae), based on original type material
A1 - Hadfield K
A1 - Bruce N
A1 - Smit N
Y1 - 2016
JF - ZooKeys
JA -
VL -
IS - 592
UR - http://dx.doi.org/10.3897/zookeys.592.8098
SP - 39
EP - 91
PB - Pensoft Publishers
M1 - Versioned wiki page: 2016-05-25, version 98006, https://species-id.net/w/index.php?title=Ceratothoa_carinata&oldid=98006 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.592.8098

Wikipedia/ Citizendium:

<ref name="Hadfield2016ZooKeys">{{Citation
| author = Hadfield K, Bruce N, Smit N
| title = Redescription of poorly known species of Ceratothoa Dana, 1852 (Crustacea, Isopoda, Cymothoidae), based on original type material
| journal = ZooKeys
| year = 2016
| volume =
| issue = 592
| pages = 39--91
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.592.8098
| url = http://zookeys.pensoft.net/articles.php?id=8098
| pmc =
| accessdate = 2024-12-23

}} Versioned wiki page: 2016-05-25, version 98006, https://species-id.net/w/index.php?title=Ceratothoa_carinata&oldid=98006 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Isopoda
Familia: Cymothoidae
Genus: Ceratothoa

Name

Ceratothoa carinata (Bianconi, 1869) – Wikispecies link – Pensoft Profile

Material examined

Neotype [here designated]. South African Musuem, Cape Town (SAMC-A085795) – female (33 mm TL; 15 mm W), collected from Maputo Bay, Mozambique, from the buccal-cavity of Selar crumenophthalmus, November 2013, coll. Wynand Vlok (HP 221). Paratypes. Three females (27–31 mm TL; 12–14 mm W), same data as holotype (SAMC-A085796).

Description

Neotype female. Length 33 mm, width 15 mm.
Body rectangular, 1.8 times as long as greatest width, dorsal surface with medial longitudinal ridge present, widest at pereonites 3–5, most narrow at pereonite 1, lateral margins slightly convex. Cephalon 0.6 times longer than wide, visible from dorsal view, subtriangular. Frontal margin rounded to form blunt rostrum. Eyes oval with distinct margins, one eye 0.1 times width of cephalon; 0.2 times length of cephalon. Antennula more stout and same length as antenna, with 7 articles; antennule peduncle articles 1 and 2 distinct and articulated. Antenna with 8 articles.
Pereonite 1 with median projection, anterior border straight, anterolateral angle with small distinct produced point, extend to middle of the eye. Posterior margins of pereonites smooth and straight. Coxae 2–3 narrow; with posteroventral angles rounded; 4–7 with rounded point; not extending past pereonite margin. Pereonites 6 and 7 narrower and becoming more progressively rounded posteriorly. Pleon with pleonite 1 most narrow, visible in dorsal view; pleonites posterior margin with irregular small nodules. Pleonite 2 not overlapped by pereonite 7; posterolateral angles of pleonite 2 narrowly rounded. Pleonite 5 widest, posterior margin produced medially. Pleotelson 0.5 times as long as anterior width, dorsal surface with 2 sub-medial depressions, lateral margins weakly convex, posterior margin subtruncate and shallowly emarginate.
Pereopod 1 basis 1.5 times as long as greatest width; ischium 0.8 times as long as basis; merus proximal margin without bulbous protrusion; carpus with straight proximal margin; propodus 1.7 times as long as wide; dactylus moderately slender, 1.2 times as long as propodus, 2.9 times as long as basal width. Pereopod 7 basis as long as greatest width; ischium 1.2 times as long as basis, with a large proximal bulbous protrusion; merus proximal margin with large bulbous protrusion, merus 0.5 times as long as wide, 0.3 times as long as ischium; carpus 0.7 times as long as wide, 0.3 times as long as ischium, without bulbous protrusion; propodus 1.3 times as long as wide, 0.5 times as long as ischium; dactylus moderately slender, as long as propodus, 2.2 times as long as basal width.
Uropod same length as pleotelson, peduncle 0.8 times longer than rami, peduncle lateral margin without setae; rami not extending beyond pleotelson, marginal setae absent, apices narrowly rounded. Endopod apically rounded, 3 times as long as greatest width, lateral margin straight, mesial margin straight, terminating without setae. Exopod extending to end of endopod, 4 times as long as greatest width, apically rounded, lateral margin weakly convex, mesial margin straight, terminating without setae.

Size

Ovigerous female: 28.5–38 mm TL (10–14 mm W); non-ovigerous female: 13–34 mm TL; male: 10–12 mm TL (Bianconi 1869[19], Schioedte and Meinert 1883[3], Stebbing 1910[13], Trilles 1972b[14], c[15]).

Distribution

Western Indian Ocean and southwest Pacific Ocean: Mozambique (Bianconi 1869[19], Hilgendorf 1879[2], Schioedte and Meinert 1883[3]); Great Redangs, Malay Peninsula (Lanchester 1902[12]); Seychelles (Stebbing 1910[13]); New Caledonia (Trilles 1972b[14], c[15], Bruce 2007[8]); Red Sea (Trilles 2008[6]); Japan (Nunomura 2006[20], Saito 2009[18], Nagasawa et al. 2014[10]); and Australia (Martin et al. 2013[9]).

Hosts

On Lutjanus adetii (previously Lutjanus amabilis) (Trilles 1972b[14], c[15]); Pseudocaranx dentex (see Nunomura 2006[20]); Decapterus muroadsi (see Nunomura 2006[20], Saito 2009[18], Nagasawa et al. 2014[10]); and Selar crumenophthalmus (see Martin et al. 2013[9], present study).

Remarks

Ceratothoa carinata can be identified by the characteristic medial ridge extending longitudinally along the dorsal pereon surface. Furthermore, it has a laterally depressed and wider than long pleotelson; pereonite 7 with an enlarged carinate ischium and large bulbous protrusion on the merus; uropods reaching the distal edge of the pleotelson; as well as a concave posterior margin on the pleotelson.
Bianconi (1869)[19] originally described this species from a single ovigerous female from Mozambique and stated that it was most similar to Ceratothoa gaudichaudii and Ceratothoa trigonocephala. Since then, another species, Ceratothoa trillesi (Avdeev 1979[16]) was also described from the Australia–New Zealand region, and shared many morphological characteristics. There has been some confusion surrounding the synonymy of Ceratothoa trillesi with Ceratothoa carinata (see Avdeev 1979[16], Trilles 1994[5]), however, these species differ substantially with Ceratothoa trillesi lacking the distinctive medial ridge, enlarged basis and ischium on pereopod 7, and a wide and depressed pleotelson seen in Ceratothoa carinata.
Species and names within Ceratothoa have been moved in and out of synonymy, an indication of both the difficulty of identifying and characterising species. Furthermore, many species are variable (Hadfield et al. 2014a[21]) and species morphological boundaries are often unclear. In addition, the Cymothoidae also have groups of cryptic species such as has been seen in Mothocya (Bruce 1986[22]) and Anilocra (Bunkley Williams and Williams 1981[23], Bruce 1987[24]) and therefore the designation of a neotype is necessary in the long-term interests of nomenclatural stability.
Schioedte and Meinert (1883)[3] mention a specimen from the type locality (Mozambique) that was originally deposited into Zoologisches Museum, Museum für Naturkunde, Homboldt-Universität, Berlin, Germany. Enquiries to that museum, as well as Muséum National d’Histoire Naturelle, Natural History Museum, London, the Naturalis Biodiversity Center and the Zoological Museum, University of Copenhagen, failed to locate any material that could be identified as the type for Ceratothoa carinata. It is highly probable that this specimen was destroyed in World War II or lost during relocation of the material. As cymothoid isopods are among the most misunderstood and difficult isopods to identify (Brusca 1981[25]), a complete description (or redescription) of the type material is essential for accurate identifications and research on the species. The current material of Ceratothoa carinata was obtained from the type locality and corresponds with the original drawings of the species (Bianconi 1869[19]). Both specimens have the noticeable medial ridge or hump running longitudinally down the length of the pereon. The pleotelson is medially concave and is wider than long. Furthermore, the uropods do not extend past the end of the pleotelson and the posterior margin of the pleotelson is indented medially; the eyes are small but clearly visible; and the antennae are stout and extend to the anterior margin of pereonite 1.
As the current specimen is undoubtedly Ceratothoa carinata, it is hereby designated as the neotype for the species, fulfilling all of the requirements necessary in the International Code of Zoological Nomenclature (Anon 1999, ICZN, Article 75).

Taxon Treatment

  • Hadfield, K; Bruce, N; Smit, N; 2016: Redescription of poorly known species of Ceratothoa Dana, 1852 (Crustacea, Isopoda, Cymothoidae), based on original type material ZooKeys, (592): 39-91. doi

Images

Figure 3. Ceratothoa carinata (Bianconi, 1869), female neotype (33 mm) (SAMC-A085795). A dorsal view B dorsal view of pereonite 1 and cephalon C pereonite 1 D pereopod 7 E ventral view of cephalon F dorsal view of pleotelson G uropod H lateral view.
Figure 3. Ceratothoa carinata (Bianconi, 1869), female neotype (33 mm) (SAMC-A085795). A dorsal view B dorsal view of pereonite 1 and cephalon C pereonite 1 D pereopod 7 E ventral view of cephalon F dorsal view of pleotelson G uropod H lateral view. 

Other References

  1. ↑ Gerstaecker A (1901) Isopoda. In: Bronn H (Ed.) Die Klassen und Ordnungen der Arthropoden wissenschaftlich dargestellt in Wort und Bild. Crustacea (Zweite Hälfte: Malacostraca), Fünfter Band. II., Abtheilung, 278 pp.
  2. ↑ 2.0 2.1 Hilgendorf F (1879) Die von Herrn. W. Peters in Moçambique gesammelten Crustaceen. Monatsbericht de Königlich Preussischen Akademie der Wissenschaften zu Berlin, (Physikalisch-mathematischen Klasse) 1878: 782–851.
  3. ↑ 3.0 3.1 3.2 3.3 Schioedte J, Meinert F (1883) Symbolæ ad monographium Cymothoarum crustaceorum familiæ. III. Saophridæ. IV. Ceratothoinæ. Naturhistorisk Tidsskrift, Kjøbenhavn 13: 281–378.
  4. ↑ Trilles J (1986) Les Cymothoidae (Crustacea, Isopoda, Flabellifera) d’Afrique. Bulletin du Muséum National d’Histoire Naturelle 8: 617–636.
  5. ↑ 5.0 5.1 Trilles J (1994) Les Cymothoidae (Crustacea, Isopoda) du Monde. Podrome pour une faune. Studia Marina 21/22: 1–288. [for 1991]
  6. ↑ 6.0 6.1 6.2 Trilles J (2008) Some marine isopods from the Senckenberg Research Institute (Frankfurt am Main, Germany) (Crustacea, Isopoda: Cymothoidae, Aegidae, Corallanidae, Cirolanidae). Senckenbergiana Biologica 88: 21–28.
  7. ↑ Kensley B (2001) Biogeography of the marine Isopoda of the Indian Ocean, with a check-list of species and records. In: Kensley B Brusca R (Eds) Isopod Systematics and Evolution Crustacean Issues 13. A.A. Balkema, Rotterdam, 205–264.
  8. ↑ 8.0 8.1 Bruce N (2007) Provisional list of the marine and freshwater isopods (Crustacea) of New Caledonia. In: Payri C Richer de Forges B (Eds) Compendium of marine species of New Caledonia. Documents scientifiques et techniques II7, 2nd ed., IRD, Nouméa, 275–279.
  9. ↑ 9.0 9.1 9.2 Martin M, Bruce N, Nowak B (2013) Redescription of Ceratothoa carinata (Bianconi, 1869) and Ceratothoa oxyrrhynchaena Koelbel, 1878 (Crustacea: Isopoda: Cymothoidae), buccal-attaching fish parasites new to Australia. Zootaxa 3683: 395–410. doi: 10.11646/zootaxa.3683.4.4
  10. ↑ 10.0 10.1 10.2 Nagasawa K, Fukuda Y, Nishiyama M (2014) Further record of Ceratothoa carinata (Isopoda: Cymothoidae) parasitic on Decapterus maruadsi in Japanese waters. Biogeography 16: 59–61.
  11. ↑ Martin M, Bruce N, Nowak B (2015a) Review of the fish-parasitic genus Ceratothoa Dana, 1852 (Crustacea: Isopoda: Cymothoidae) from Australia, with description of two new species. Zootaxa 3963: 251–294. doi: 10.11646/zootaxa.3963.3.1
  12. ↑ 12.0 12.1 Lanchester W (1902) On the Crustacea collected during the “Skeat Expedition” to the Malay Peninsula. Part 2. Anomura, Cirripedia and Isopoda. Proceedings of the Zoological Society of London 1902: 363–381.
  13. ↑ 13.0 13.1 13.2 Stebbing T (1910) Isopoda from the Indian Ocean and British East Africa. The Percy Sladen Trust Expedition to the Indian Ocean under the leadership of Mr J. Stanley Gardiner. Volume III. Transactions of the Linnean Society of London (Zoology) 14: 83–122, pls. 125–111. doi: 10.1111/j.1096-3642.1910.tb00525.x
  14. ↑ 14.0 14.1 14.2 14.3 Trilles J (1972b) Les Cymothoidae (Isopoda, Flabellifera) du Muséum National d’Histoire Naturelle de Paris. Etude critique accompagnée de précisions en particulier sur la répartition géographique et l’écologie des différentes espèces représentées. I. Les Ceratothoinae Schioedte et Meinert, 1883. Bulletin du Muséum d’Histoire Naturelle, Paris, 3e série, Zoologie 91: 1231–1268.
  15. ↑ 15.0 15.1 15.2 15.3 Trilles J (1972c) Sur quatre isopodes cymothoides du Pacifique (Nouvelle Caledonie). Cahiers de l’Office de Recherche Scientifiques et Techniques Outre Mers, série Océanographique 10: 3–17.
  16. ↑ 16.0 16.1 16.2 Avdeev V (1979) Parasitic isopods of the genus Meinertia from Australian-New Zealand region. Biologiya Morya (Vladivostok) 2: 48–54.
  17. ↑ Nierstrasz H (1931) Isopoda genuina. II. Flabellifera. In: Weber M De Beaufort L (Eds) Die Isopoden der Siboga-Expedition. E.J. Brill, Leiden, 123–233.
  18. ↑ 18.0 18.1 18.2 Saito N (2009) Note on a cymothoid isopod parasitized in the buccal cavity of the round scad, Decapterus maruadsi (Temminck & Schlegel, 1844). Cancer (The Carcinological Society of Japan) 18: 7–9.
  19. ↑ 19.0 19.1 19.2 19.3 Bianconi G (1869) Specimina zoologica Mosambicana, Fasciculus XVII. Memorie dell’Accademia delle Scienze dell’Istituto di Bologna 9: 199–222.
  20. ↑ 20.0 20.1 20.2 Nunomura N (2006) Marine isopod crustaceans in the Sagami Sea, Central Japan. Memoirs of The National Science Museum, Tokyo 41: 7–42.
  21. ↑ Hadfield K, Bruce N, Szinetár C, Smit N (2014a) Ceratothoa retusa (Schiœdte & Meinert, 1883) (Isopoda, Cymothoidae), a variable species of fish parasitic marine isopod from the Indian Ocean. Crustaceana 87: 448–462. doi: 10.1163/15685403-00003293
  22. ↑ Bruce N (1986) Revision of the isopod crustacean genus Mothocya Costa, in Hope, 1851 (Cymothoidae: Flabellifera), parasitic on marine fishes. Journal of Natural History 20: 1089–1192. doi: 10.1080/00222938600770781
  23. ↑ Bunkley Williams L, Williams E (1981) Nine new species of Anilocra (Crustacea: Isopoda: Cymothoidae) external parasites of West Indian coral reef fishes. Proceedings of the Biological Society of Washington 94: 1005–1047.
  24. ↑ Bruce N (1987) Australian Pleopodias Richardson, 1910, and Anilocra Leach, 1818 (Isopoda: Cymothoidae), crustacean parasites of marine fishes. Records of the Australian Museum 39: 85–130. doi: 10.3853/j.0067-1975.39.1987.166
  25. ↑ Brusca R (1981) A monograph on the Isopoda Cymothoidae (Crustacea) of the eastern Pacific. Zoological Journal of the Linnean Society 73: 117–199. doi: 10.1111/j.1096-3642.1981.tb01592.x
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