Gigantactis microdontis Bertelsen, Pietsch, and Lavenberg 1981
Creators
Description
Gigantactis microdontis Bertelsen, Pietsch, and Lavenberg, 1981 (Figs. 1, 2)
Gigantactis sp. 2: Parin et al., 1973: 146 (19.5-mm metamorphosal stage; eastern tropical Pacific, 12° 30’ S, 87°45’ W, 0–100 m); Parin et al., 1977: 156 (107 mm SL, western tropical Pacific Ocean, 7° 57’ N, 135° 53’ E, 0–1000 m).
Gigantactis microdontis Bertelsen et al., 1981: 54, figs. 56–58, 67 (original description, seven specimens, 19.5–127 mm SL, eastern Pacific); Bertelsen and Pietsch, 2002: 959, 961, fig. 3D (comparison with congeners, in key); Love et al., 2005: 62 (eastern North Pacific); Walther-Mendoza et al., 2013: 413, tabl. 1 (in list, LACM 30284, 32204, off Guadalupe Island).
Material. IOM 3596, female (Fig. 1A), 110 mm SL, western tropical Pacific Ocean, 7° 57’ N, 135° 53’ E, Isaacs-Kidd midwater trawl no. 87, fished open between 0–1000 m, 3300 m wire out, 5:42–6:42 hours, R/ V Vityaz, cruise 57, station 7297, sample no. 199, 29 March 1975.
Description. Illicium without lateral filaments, nearly cylindrical throughout length; escal bulb (Fig. 1B) clubshaped, without dermal spinules, pigmented only near base and on distal part of short distal prolongation; distal patch of pigment oblong in shape, tapering posteriorly towards pore of photophore; 13 unpigmented stalked filaments, arising from distal surface of bulb just inside edge of distal pigment patch in two nearly parallel, lateral series that meet anteriorly; escal filaments short, length approximately equal to diameter of bulb, spatulate and compressed distally.
Dorsal-fin rays 5, anal-fin rays 5, pectoral-fin rays 16, caudal-fin rays 9, free nearly to base. Number of premaxillary teeth 20; number of dentary teeth 31. Measurements in percent of SL: illicial length 245.5, length of esca (excluding distal filaments) 6.4, caudal peduncle length 32.7, longest caudal-fin rays (second and seventh) 37.3, longest dentary and premaxillary tooth 0.7 and 0.9, respectively.
Remarks. Parin et al. (1977: 156) measured SL of 107 mm for this specimen; however, we measured 110 mm from the tip of the pterygiophore of the illicium to the posteriormost margin of the hypural plate. It may reflect a different scheme of measurements.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- IOM
- Event date
- 1975-03-29
- Family
- Gigantactinidae
- Genus
- Gigantactis
- Kingdom
- Animalia
- Material sample ID
- IOM 3596
- Order
- Lophiiformes
- Phylum
- Chordata
- Scientific name authorship
- Bertelsen, Pietsch, and Lavenberg
- Species
- microdontis
- Taxon rank
- species
- Verbatim event date
- 1975-03-29
- Taxonomic concept label
- Gigantactis microdontis Bertelsen, 1981 sec. Prokofiev & Pietsch, 2019
References
- Bertelsen, E., Pietsch, T. W. & Lavenberg, R. J. (1981) Ceratioid anglerfishes of the family Gigantactinidae: Morphology, sys- tematics, and distribution. Natural History Museum Los Angeles County, Contribution in Science, 332, i-vi + 1 - 74.
- Parin, N. V., Becker, V. E., Borodulina, O. D. & Tchuvasov, V. M. (1973) Deep-sea pelagic fishes of the south-eastern Pacific Ocean. Transactions of the Institute of Oceanology, Academy of Sciences of the USSR, 94, 71 - 172. [in Russian, with English abstract]
- Parin, N. V., Becker, V. E., Borodulina, O. D., Karmovskaya, E. S., Fedoryako, B. I., Shcherbachev, Y. N., Pokhilskaya, G. N. & Tchuvasov, V. M. (1977) Midwater fishes in the western tropical Pacific Ocean and the seas of the Indo-Australian Archipelago. Transactions of the Institute of Oceanology, Academy of Sciences of the USSR, 107, 68 - 188. [in Russian, with English abstract]
- Bertelsen, E. & Pietsch, T. W. (2002) A new species of deep-sea anglerfish of the genus Gigantactis (Lophiiformes: Gigantac- tinidae) from the Western North Atlantic Ocean. Copeia, 2002 (4), 958 - 961. https: // doi. org / 10.1643 / 0045 - 8511 (2002) 002 [0958: NSODSA] 2.0. CO; 2
- Love, M. S., Mecklenburg, C. W., Mecklenburg, T. A. & Thorsteinson, L. K. (2005) Resource inventory of marine and estuarine fishes of the west coast and Alaska: A checklist of North Pacific and Arctic Ocean species from Baja California to the Alaska-Yukon border. OCS Study MMS 2005 - 030 and USGS / NBII 2005 - 001. U. S. Department of the Interior, U. S. Geological Survey, Biological Resources Division, Seattle, Washington, x + 276 pp.
- Walther-Mendoza, M., Ayala-Bocos, A., Hoyos-Padilla, M. & Reyes-Bonilla, H. (2013) New records of fishes from Guadalupe Island, Northwest Mexico. Hidrobioloigica, 23 (3), 410 - 414.