Pennella diodontis Oken 1816
Creators
Description
Pennella diodontis Oken, 1816
(Fig. 7)
Synonyms. Pennella cervicornis Heegaard, 1943, P. plumosa (Dekay, 1844) Type host and locality. Diodon sexmaculatus, Philippines.
Morphology. Size: 24–28 mm. Papillae: partial coverage, clavate and club-like, consistent in size and shape, not found in organized groups. Holdfasts: two only, short. First antenna with three segments, second with two segments. Plumes: simple, single.
Remarks. A valid species. Original description from porcupine fish, Diodon sexmaculatus (= D. holacanthus) (Oken 1816); redescription from the same host species, Ceylon (Kirtisinghe 1932; Fig. 7). Considered incorrectly as infesting two host genera: Lophius and Diodon (Wilson 1917). The history of P. diodontis was often confused with that of P. sagitta (Wilson 1917), however, P. diodontis reported from Lophius was an error of Blainville (1822) based on a poor description and incorrect host identification; P. diodontis is in fact a parasite of porcupine fish (Diodontidae: Diodon) and P. sagitta is found so far only on frogfish (Antennaridae: Histrio, possibly Antennarius)). Lasarus and Sreenivasan (1977) reported P. diodontis from the moorish idol (Zanculus canascens (= Z. cornuta) in the Indian Ocean. The single habitus figure and brief description are not sufficient to confidently place their specimens (eight) in P. diodontis. However, the size of the parasite (26mm) and the cephalothoracic papillae (few small at center, and larger branched papillae around the cephalothorax periphery) are reminiscent of the species. As a parasite of Diodon, P. diodontis is a small species with uniformity in most structures between specimens (Hogans 1988a), however, its cephalothoracic papillae may vary slightly in arrangement and number depending on the individual parasite (Hogans 1988a; Heegard 1943).
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Pennellidae
- Genus
- Pennella
- Kingdom
- Animalia
- Order
- Siphonostomatoida
- Phylum
- Arthropoda
- Scientific name authorship
- Oken
- Species
- diodontis
- Taxon rank
- species
- Type status
- holotype
- Taxonomic concept label
- Pennella diodontis Oken, 1816 sec. Hogans, 2017
References
- Oken, L. (1816) Lehrbuch der Naturgeschichte. Dritter Theil, Zoologie. Fol. 2. A. Schmid, Jena, 1299 pp. [pp. 181, 357]
- Dekay, J. E. (1844) Zoology of New York or the New York fauna. Part IF. Crustacea. W. & A. White & J. Visscher, Albany, N. Y., 415 pp. [pp. 60]
- Kirtisinghe, P. (1932) Pennella zeylanica n. sp. a parasitic copepod of Histiophorous gladius Day. Parasitology, 24, 137 - 139. https: // doi. org / 10.1017 / S 0031182000020473
- Wilson, C. B. (1917) North American parasitic copepods belonging to the family Lernaeidae with a revision of the entire family. Proceedings of the United States National Museum, 53, 1 - 150.
- Blainville, M. H. D. (1822) Memoire sur les Lernaees (Lernaea, Linn.). Journal Physique, 95, 437 - 447.
- Lasarus, S. & Sreenivasan, P. V. (1977) On a copepod parasite Pennella diodontis Oken with epizoic cirripede Chonchoderma virgatum Spengler on a new host Zanculus canascens (Linnaeus). Indian Journal of Fisheries, 24 (2), 204 - 206.
- Hogans, W. E. (1988 a) Redescription of Pennella sagitta (Copepoda: Pennellidae) from Histrio histrio (Pisces) in the northwest Atlantic Ocean with a provisional review of the genus Pennella Oken, 1816. Journal of Zoology, London, 216 (2), 379 - 390.
- Heegard, P. (1943) Parasitic copepods mainly from tropical and Antarctic seas. Arkives Zoology, 34 (A), 1 - 37.