Asteronyx loveni Müller & Troschel, 1842

Granja-Fernández, Rebeca, Hendrickx, Michel E., Rangel-Solís, Pedro Diego & López-Pérez, Andrés, 2023, Deep-sea Ophiuroidea (Echinodermata) collected during the TALUD cruises in western Mexico, Zootaxa 5259 (1), pp. 1-71 : 14

publication ID

https://doi.org/ 10.11646/zootaxa.5259.1.1

publication LSID

lsid:zoobank.org:pub:4306F52E-FD24-45B0-B307-66B71173D805

DOI

https://doi.org/10.5281/zenodo.7798716

persistent identifier

https://treatment.plazi.org/id/03AB87FA-FFAC-FFD8-FF7B-FE50FC17F852

treatment provided by

Plazi

scientific name

Asteronyx loveni Müller & Troschel, 1842
status

 

Asteronyx loveni Müller & Troschel, 1842 View in CoL View at ENA

Fig. 1G‒M View FIGURE 1

Asteronyx loveni Müller & Troschel, 1842: 119‒120 View in CoL , pl. 10, figs. 3‒5.—H.L. Clark 1913: 219.— Döderlein 1927: 59‒63, pl. 7, figs. 7‒8.— Kyte 1969a: 1737.— Lambert & Austin 2007: 71‒72, fig. 27.— Okanishi et al. 2011: 370‒371, fig. 2; 2017: 6‒12, figs. 1‒6.

Asteronyx locardi Koehler, 1895: 88 View in CoL .

Asteronyx dispar Lütken & Mortensen, 1899: 185 View in CoL , pl. 21, figs. 1‒2.—H.L. Clark 1913: 218.

Asteronyx cooperi Bell, 1909: 22 View in CoL .

Ophiuropsis lymani Studer, 1884: 85 View in CoL , pl. 5, figs. 12a‒d.

Ophiuraster patersoni Litvinova, 1998: 441‒443 , fig. 3.

See Paterson (1985) for other synonymous records.

Material examined.11 individuals at six stations. TALUD VI, Sta. 34, 1 ind. (ICML-EMU-11115). TALUD VIII, Sta. 11, 2 ind. (ICML-EMU-11110). TALUD IX, Sta. 21B, 1 ind. (ICML-EMU-9012). TALUD X, Sta. 22, 2 ind. (ICML-EMU-11112). TALUD XII, Sta. 29, 3 ind. (ICML-EMU-11111) and 1 ind. (ICML-EMU-11698). TALUD XIII, Sta. B, 1 ind. (ICML-EMU-11113).

Comparative material. Asteronyx dispar Lütken & Mortensen, 1899 , syntypes, 15 ind.: MCZ OPH-2816 , MCZ OPH-2875 , MCZ OPH-2876 , USNM 19592 About USNM , USNM 19593 About USNM , USNM 19595 About USNM , USNM 19596 About USNM , USNM 19597 About USNM (Supplementary file 2).

Description (ICML-EMU-11111). DD = 23 mm. Disc subpentagonal, indented interradially. Dorsal disc covered with thickened skin and sparse epidermal circular ossicles, lacking scales. RS clearly multilayered, elongated, thin, prominent distally, almost reaching the center of the disc ( Fig. 1G View FIGURE 1 ). Ventral interradii entirely covered by integument with circular-shaped epidermal ossicles. Genital slits round, restricted to proximal part of the interradius, short, covering approximately 1/6 of interradius. OSh not evident ( Fig. 1H View FIGURE 1 ). One small circular madreporite.AdSh broader than long, rectangular with rounded edges, meeting in front of OSh. Jaws bearing seven papillae at each side; OPa four, granule-like; TPa three at jaw tips, spiniform, larger than OPa, separated. Teeth several, similar to TPa ( Fig. 1I View FIGURE 1 ). Arms entirely covered by integument, coiled, gradually narrowing distally ( Fig. 1J View FIGURE 1 ); two arms wider and slightly shorter than the remaining three. LAP located on the ventral lateral side of vertebrae, rounded, prominent ( Fig. 1K View FIGURE 1 ). First tentacle pore lacking ArSp; second with one ArSp; subsequent pores gradually reaching up to 6‒7 ArSp in the middle of the arm, hook-shaped, serrated ( Fig. 1K View FIGURE 1 ). Middle part of the arm with ventralmost ArSp very elongated (approximately two VAP in length), bulbous ( Fig. 1L View FIGURE 1 ). TSc lacking. Color pattern yellowish-brown (ethanol preservation) ( Fig. 1G‒M View FIGURE 1 ).

Habitat and distribution. Widely distributed in deep waters worldwide, except polar regions ( Paterson 1985). In the eastern tropical Pacific, A. loveni has been reported from Mexico, Panama, and the Galapagos Islands (Lütken & Mortensen 1899; Maluf 1991; Granja-Fernández et al. 2015); 100‒ 4,721 m, but more common at 200‒ 2,000 m depth ( Paterson 1985; Okanishi et al. 2018). Associated with gorgonians and Pennatulacea ( Fujita & Ohta 1988). The material of the TALUD cruises is from the southern Gulf of California and off Jalisco; 920‒ 1,643 m depth, associated with unidentified gorgonians.

Remarks. Asteronyx loveni has been recorded in Mexico in the Gulf of California and off western Baja California and Baja California Sur ( Granja-Fernández et al. 2015). During the TALUD cruises it was collected further south, off Jalisco (19º19′37″N; 105º26′20″W), which represents a significant extension of its distribution in western Mexico. Some of the TALUD specimens were associated with unidentified gorgonians. The arms of A. loveni have a specific function since the two wider arms firmly attach to the substrate (the gorgonians in this case), and the remainder, long and slender arms, extend into the water column to collect particles used for feeding ( Paterson 1985; Fujita & Ohta 1988). Genetic data show considerable diversity suggesting that A. loveni might be a complex of several closely related species ( Christodoulou et al. 2019).

VI

Mykotektet, National Veterinary Institute

MCZ

Museum of Comparative Zoology

Kingdom

Animalia

Phylum

Echinodermata

Class

Ophiuroidea

Order

Euryalida

Family

Asteronychidae

Genus

Asteronyx

Loc

Asteronyx loveni Müller & Troschel, 1842

Granja-Fernández, Rebeca, Hendrickx, Michel E., Rangel-Solís, Pedro Diego & López-Pérez, Andrés 2023
2023
Loc

Asteronyx loveni Müller & Troschel, 1842: 119‒120

Doderlein, L. 1927: 59
Clark, H. L. 1913: 219
Troschel, F. H. 1842: 120
1842
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