Barathronus maculatus Shcherbachev, 1976

Nielsen, Jørgen G., 2019, Revision of the circumglobal genus Barathronus (Ophidiiformes, Bythitidae) with a new species from the eastern North Atlantic Ocean, Zootaxa 4679 (2), pp. 231-256 : 244-245

publication ID

https://doi.org/ 10.11646/zootaxa.4679.2.2

publication LSID

lsid:zoobank.org:pub:A3A1CEE3-DA6D-4CF8-B529-7200B987C51F

DOI

https://doi.org/10.5281/zenodo.3797799

persistent identifier

https://treatment.plazi.org/id/0A6687ED-8B26-D17C-FF0B-FE233B97FD59

treatment provided by

Plazi

scientific name

Barathronus maculatus Shcherbachev, 1976
status

 

Barathronus maculatus Shcherbachev, 1976 View in CoL

Table 2. Figs. 2 View FIGURE 2 , 15–17 View FIGURE 15 View FIGURE 16 View FIGURE 17

Barathronus maculatus Shcherbachev, 1976: 191 View in CoL (type locality: 26°41’S, 34°06’E).

Barathronus maculatus: Shcherbachev, 1978: 191 View in CoL ; Nielsen & Machida 1985; Nielsen et al. 1999: 139; Yeh et al. 2009: 228; Bray et al. 2015; Nielsen et al. 2019: 563 View Cited Treatment .

Barathronus View in CoL sp.: Nielsen 1969: 59; Machida 1984: 266.

Material examined ( 22 specimens, SL 115–225 mm): Holotype: ZIL 42298 (SL 157 mm, male), Mozambique Channel, 26°41’S, 34°06’E, RV Fiolent, st. 198, bottom trawl, 1000 m, 27 Sep. 1973. Non-types: USNM 150285 About USNM (SL 156 mm, male), off Japan, 35°05’40’’N, 138°29’30’’E, RV Albatross, st. D-5065, bottom trawl, 386–430 m, 15 Oct. 1906. MNHN 1988-1589 About MNHN (SL 154 mm, male), off Madagascar, 22°20´2.3’’S, 42°58’58.8’’E, RV Vauban, Crosnier coll., trawl 109, 995– 1020 m, 30 Nov. 1973. ZIL 45144 (SL 182 mm, female), off Natal, South Africa, 30°16’S, 31°18’E, RV Fiolent, bottom trawl, 950–1050 m, 26 may 1974. MNHN 1984-371 About MNHN (SL 144 mm, male), off Madagascar, 13°02’S, 48°02’E, RV Vauban, Crosnier coll., trawl 133, 1000–1525 m, 21 Jan. 1975. BSKU 28689 View Materials (SL 137 mm, female), off Ryu-kyu ls., 28°53’N, 127°18’E, RV Yuryo-maru, No. 8 net no. 60, bottom trawl, 820–830 m, 16 Mar. 1978. AMS I 24059-013 (SL 187 mm, female), off New South Wales, 33°29’S, 152°12’E to 33°32’S, 152°09’E, RV Kapala, field no. K 83-09-02, bottom trawl, 942–978 m, 23 Aug. 1983. AMS I 27717-002 (SL 175 mm SL, female), off New South Wales, 33°58’S, 152°12’E, RV Kapala, field no. K 88-04-08, bottom trawl, 1025–1150 m, 24 Mar. 1988. AMS I 27711-001 (SL 163 mm, male), off New South Wales, 33°50’S, 151°57’E to 33°47’S, 151°57’E, RV Kapala, field no. K 88-10-01, bottom trawl, 960–1050 m, 16 May 1988. AMS I 27638- 001 (SL 225 mm, male), off New South Wales, 33°44’S, 152°06’E to 33°42’S, 152°09’E, RV Kapala, field no. K 88-11-01, bottom trawl, 1020–1040 m, 14 June 1988. AMS I 28477-002 (SL 212 mm, male), off Newcastle, New South Wales, 32°57’S, 152°44’E, RV Kapala, field no. K 88-16-04, bottom trawl, 1042–1061 m, 17 Aug. 1988. SAMZ MB-F031499 (SL 116+ mm, male), off Natal, South Africa, 29°43.2’S, 31°43.6’E, RV Benguela, st. G 13534, prawn trawl, 645 m, 23 Aug.1988. ZMUC P771755 View Materials (SL 118+ mm, male), off northern Madagascar, 12°28.5’S, 48°09.9’E, RV Vityaz, cr. 17, st. 2601, bottom trawl, 710– 700 m, 12 Nov. 1988. AMS I 29799 View Materials -003 (SL 188–215 mm, 2 females), east of Newcastle , New South Wales, 32°57’S, 152°48’E to 32°55’S, 152°45’E, RV Kapala , field no. K 89-06-02, bottom trawl, 1043–1061 m, 10 Apr. 1989. AMS I 29823-008 (SL 188 mm female), off Port Stephens , New South Wales, 32°38’S, 152°57’E to 32°28’S, 153°00’E, RV Kapala , field no. K 89-13-01, bottom trawl, 896–969 m, 29 June 1989. AMS I 29748-002 (SL 195 mm, female), east of Nowra , New South Wales, 34°55’S, 151°14’E to 34°52’S, 151°16’E, RV Kapala , field no. K 89-16-01, bottom trawl, 1024–1061 m, 10 Aug. 1989. CSIRO H 3142-01 View Materials (SL 83 mm, male), south-west of Imperieuse Reef , West Australia, 18°00’S, 118°09’E, RV Surefire , prawn trawl, 545 m, 28 Feb. 1992. CSIRO H 3149-01 View Materials (SL 85 mm, female), north of Dampier Archipelago , West Australia, 18°50’S, 116°20’E, RV Surefire , prawn trawl, 500 m, 10 Mar. 1992. CSIRO H 3197-05 View Materials (SL 96 mm, female), north of Dampier Archipelago , West Australia, 18°46’S, 116°15’E, RV Surefire , prawn trawl, 550 m, 06 Feb. 1992. CSIRO H 4136-02 View Materials (SL 91 mm, female), west of Rowley Shoals , West Australia, 18°46’S, 116°17’E RV Surefire , prawn trawl, 555 m, 15 Feb. 1992. BSKU 86066 View Materials (SL 115 mm, female), Tosa Bay , Japan, 33°06.5’N, 133°42.5’E to 33°05.5’N, 133°43.0’E, RV Kotaka-maru , otter trawl, 763–803 m, 2 Mar. 1999. GoogleMaps

Remarks. Barathronus maculatus is relatively often caught by commercial trawlers as it occurs on the upper continental slope.

Diagnosis. Barathronus maculatus is the largest known species of the genus with a SL of up to 225 mm. It differs from the other five species of the genus with dark-pigmented peritoneum by the distinct, dark brown pigmentation dorsally between head and dorsal fin and on sides of the light brown body in preserved specimens ( Fig. 15B View FIGURE 15 ); in newly caught specimens ( Fig. 15A View FIGURE 15 ) the pigmentation is dark blue like the peritoneum and the body is faintly reddish. Also the following combination of characters is characteristic: dorsal-fin rays 75–83, anal-fin rays 54–66, precaudal vertebrae 32–36, total vertebrae 74–79, long rakers on anterior gill arch 31–32, vomer with up to four and dentary with up to five fangs. Length of penis up to 10% SL ( Fig. 16 View FIGURE 16 ); it is proximally covered by a large dorsal clasper and a smaller ventral clasper protected ventrally by a well-developed fleshy hood. In specimens longer than about 140 mm SL the eyes are not externally visible while the eyes of smaller specimens appear as a narrow, dark ring surrounding lighter tissue. Otolith roundish and three times as long as thick and twice as long as the centrally placed, undivided sulcus ( Fig. 17 View FIGURE 17 ).

Description. For a detailed description see Nielsen & Machida (1985: 1). The principal meristic and morphometric characters are shown in Table 2.

Comparisons. Long preserved specimens of B. maculatus with completely bleached lateral pigmentation may be confused with B. algrahami (described in the present paper), but additional characters separate the two species (see B. algrahami ).

Distribution ( Fig. 2 View FIGURE 2 ). Known from South Africa to Japan and off southeastern Australia at 386–1525 m depth.

ZIL

Academy of Sciences, Zoological Institute

RV

Collection of Leptospira Strains

ZMUC

Zoological Museum, University of Copenhagen

CSIRO

Australian National Fish Collection

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Ophidiiformes

Family

Aphyonidae

Genus

Barathronus

Loc

Barathronus maculatus Shcherbachev, 1976

Nielsen, Jørgen G. 2019
2019
Loc

Barathronus maculatus: Shcherbachev, 1978: 191

Nielsen, J. G. & Pogonoski, J. J. & Appleyard, S. A. 2019: 563
Yeh, H. - M. & Lee, M. - Y. & Shao, K. - T. 2009: 228
Nielsen, J. G. & Cohen, D. M. & Markle, D. F. & Robins, C. R. 1999: 139
Shcherbachev, Yu. N. & Levitsky, V. N. & Portsev, P. D. 1978: 191
1978
Loc

Barathronus maculatus

Shcherbachev, Yu. N. 1976: 191
1976
Loc

Barathronus

Machida, Y. 1984: 266
Nielsen, J. G. 1969: 59
1969
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