Cymothoa bychowskyi Avdeev, 1979

Ravichandran, S., Vigneshwaran, P. & Rameshkumar, G., 2019, A taxonomic review of the fish parasitic isopod family Cymothoidae Leach, 1818 (Crustacea: Isopoda: Cymothooidea) of India, Zootaxa 4622 (1), pp. 1-99 : 18-19

publication ID

https://doi.org/ 10.11646/zootaxa.4622.1.1

publication LSID

urn:lsid:zoobank.org:pub:4537BB46-452F-4E0C-A444-4AA5E12A64E7

DOI

https://doi.org/10.5281/zenodo.3512150

persistent identifier

https://treatment.plazi.org/id/E129637E-FF8B-A451-FF47-FA0AFE0FFD33

treatment provided by

Plazi

scientific name

Cymothoa bychowskyi Avdeev, 1979
status

 

Cymothoa bychowskyi Avdeev, 1979 View in CoL

( Fig. 1 View FIGURE 1 j–l)

Cymothoa bychowskyi Avdeev, 1979a: 230 View in CoL , pl. 6, 7; 1985: 217, fig. 1.— Trilles, 1994: 138.—Williams, Bunkley-Williams & Pitlik, 2000: 157.— Kensley, 2001: 232.— Bruce, Lew Ton & Poore, 2002: 174.—Paulay, Kropp, Ng & Eldredge, 2003: 479.— Trilles & Bariche, 2006: 228.— Rameshkumar, Ravichandran, Sivasubramanian & Trilles, 2013d: 42, fig. 1c.— Martin, Bruce & Nowak, 2016: 6 View Cited Treatment .

Type and type locality. The holotype Cymothoa bychowskyi , held at Russian Pacific Federal Fisheries Research Institute, Vladivostok ( TINRO АGK 75011) from northwestern Australia, red cornetfish Fistularia petimba Lacépède, 1803 .

Material examined. 1 ovig. female (27 mm), Agatti Island, Lakshadweep, 20 April 2011, from Strongylura leiura (Bleeker, 1850) , coll. G. Rameshkumar ( CAS / MBRM C- 87).

Reamarks. Cymothoa bychowskyi can be identified by the body 2.4 times as long as wide; pereonite 1 with broad anterolateral margins reaching half the length of cephalon; coxae 2–4 posteroventral margins rounded, coxae 5–7 posteroventral margins project laterally in dorsal view; pleonites subequal in length, pereonite 7 posterolateral margin extending to pleonite 4; pleotelson posterior margin rounded; uropods not extending beyond posterior margin of the pleotelson and pleopod 2 of female holotype with an appendix masculine.

Avdeev (1979a) originally described C. bychowskyi from Australia and included information on the male specimen. Avdeev (1979a) made a comparison to C. parupenei Avdeev, 1979a and also mentioned the deposition of the paratypes at TINRO ( AGK 75012–75021). Cymothoa bychowskyi is currently known to parasitise only the red cornetfish, Fistularia petimba and occurs in a small geographical range. This species has only been collected least and would require more collections for a more informative analysis.

Cymothoa bychowskyi has high host specificity and the infrequent reports would suggest low occurrence. Rameshkumar et al. (2013) reported 7.9% prevalence (3 of 38 hosts) of the species from Agatti Island, Lakshadweep, southeastern India.

Distribution. Northwestern and Western Australia, precise locality not given ( Avdeev 1979a; Kensley 2001). Also reported from Guam, Micronesia ( Williams et al. 2000), Okinawa, Japan ( Williams et al. 2000), Lakshadweep and India ( Rameshkumar et al. 2013).

Hosts. Known only from family Fistulariidae : Fistularia petimba, Lacepède, 1803 , (see Avdeev 1979a; Williams et al. 2000; Rameshkumar et al. 2013d) and bluespotted cornetfish Fistularia commersonii Rüppell, 1838 ( Williams et al. 2000).

CAS

California Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Cymothoidae

Genus

Cymothoa

Loc

Cymothoa bychowskyi Avdeev, 1979

Ravichandran, S., Vigneshwaran, P. & Rameshkumar, G. 2019
2019
Loc

Cymothoa bychowskyi

Martin, M. B. & Bruce, N. L. & Nowak, B. F. 2016: 6
Rameshkumar, G. & Ravichandran, S. & Sivasubramanian, K. & Trilles, J. - P. 2013: 42
Trilles, J. - P. & Bariche, M. 2006: 228
Bruce, N. L. & Lew Ton, H. M. & Poore, G. C. B. 2002: 174
Kensley, B. 2001: 232
Trilles, J. - P. 1994: 138
Avdeev, V. V. 1979: 230
1979
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