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Issue: Vol. 5642 No. 1: 27 May 2025
Type: Article
Published: 2025-05-27
DOI: 10.11646/zootaxa.5642.1.2
Page range: 16-28
Abstract views: 80
PDF downloaded: 5

Complementary description and further record of Thysanote rastrelligeri Rangnekar, 1962 (Copepoda: Siphonostomatoida: Lernaeopodidae) from a new host

Regional Forensic Science Laboratory; Kannur; Kerala; India; 670-002
School of Animal Science; Aquatic Science and Environment; Faculty of Bioresources and Food Industry; Universiti Sultan Zainal Abidin; Besut Campus; 22200 Besut; Terengganu; Malaysia; Blue Innovation Division; Seto Inland Sea Carbon Neutral Research Center; Graduate School of Integrated Sciences for Life; Hiroshima University; 5–8–1 Minato-machi; Takehara; Hiroshima; 725–0024; Japan; Travancore Nature History Society (TNHS); MBRRA; Mathrubhumi Road; Vanchiyoor; Trivandrum; Kerala 695035; India
School of Animal Science; Aquatic Science and Environment; Faculty of Bioresources and Food Industry; Universiti Sultan Zainal Abidin; Besut Campus; 22200 Besut; Terengganu; Malaysia
Graduate School of Integrated Science and Technology; Nagasaki University; 1-14 Bunkyomachi 852-8521 Nagasaki; Japan
Pisces marine fish parasite Copepoda Thysanote scad body surface Indian Ocean

Abstract

The parasitic copepod Thysanote rastrelligeri Rangnekar, 1962, was originally described from the branchial cavity of the Indian Mackerel, Rastrelliger kanagurta (Cuvier, 1816) and it has not been reported after its original description. The type specimens of T. rastrelligeri are unavailable, so we provide herein a complementary description of the species based on fresh materials collected from the body surface of the Torpedo scad Megalaspis cordyla (L. 1758), obtained from the fish market at the Kerala coast, India. Thysanote rastrelligeri can be identified based on the following important features: presence of two pairs of maxillary processes; cephalothorax longer than trunk; presence of four simple posterior trunk processes, two dorso-laterals and two ventro-laterals; uropods about 0.5 times as long as posterior processes. Torpedo scad is considered as the new host record and the body surface, a new site of attachment.

 

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How to Cite

Helna, A.K., Aneesh, P.T., Ismail, N. & Maran, B.A.V. (2025) Complementary description and further record of Thysanote rastrelligeri Rangnekar, 1962 (Copepoda: Siphonostomatoida: Lernaeopodidae) from a new host. Zootaxa, 5642 (1), 16–28. https://doi.org/10.11646/zootaxa.5642.1.2