First records of Parapercis roseoviridis (Perciformes: Pinguipedidae) in the Southeast Atlantic

4 Pages·2000·0.22 MB·English

by  Bañón, R

NOTES ICHTYOLOGIQUES
FIRST RECORDS OF PARAPERCIS Measurements were made according to
ROSEOVIRIDIS (PERCIFORMES: PIN- Gilbert (1905) and Yamakawa (1982) with a calli-
GUIPEDIDAE) IN THE SOUTHEAST per to the nearest mm. Lateral line scales were
ATLANTIC. Rafael BAÑÓN, Rocío 69-1ºG counted from the posterior margin of opercle and
[[email protected]], Dolores GARABANA, Tomás do not include the few that extend posteriorly to
Alonso 53–5ºA, Angeles ARMESTO, Chano the caudal fin base.
Piñeiro 11–1ºB & Durán PABLO, Instituto Es-
pañol de Oceanografia, Aptdo. 1552; 36208 Vigo, Parapercis roseoviridis
SPAIN.
Material examined. - IEOV 03596,
RÉSUMÉ. - Premiers signalements de Parapercis 186 mm SL, Valdivia Bank, 15 Aug. 1996,
roseoviridis (Perciformes: Pinguipedidae) en 26º13’S-6º14’E, 220 m; IEOV 03696, 158 mm
Atlantique Sud-Est. SL, Valdivia Bank, 30 Aug. 1996, 26º13’S-
Ce travail donne des informations sur la 6º15’E, 220 m; IEOV 01598, 190 mm SL, Valdi-
capture de quatre spécimens de P. roseoviridis au via Bank, 18 Nov. 1998, 26º11’S-06º21’E, 228 m;
large du banc de Valdivia et du mont sous-marin IEOV 01698, 148 mm SL, Valdivia Bank, 16
Vema et analyse la distribution de cette espèce. Nov. 1998, 26º06’S-06º21’E, 235 m.
Jusqu’à maintenant, le genre était seulement Description (Fig. 1). - Body elongate,
représenté dans l’Atlantique par P. atlantica, des subcylindrical; head wide, somewhat depressed;
îles du Cap Vert. mouth slightly oblique and moderately large, the
maxilla extending posteriorly to a vertical at ante-
Key words. - Pinguipedidae - Parapercis roseovi- rior margin of pupil; upper jaw with a band of
ridis - ASE - Valdivia Bank - Vema seamount villiform teeth anteriorly which tapers laterally
- First records. and an outer of series of larger teeth; lower jaw
with a band of anterior villiform teeth that tapers
laterally to a single series of larger teeth; six en-
The genus Parapercis Bleeker, 1863 is larged canines at front of lower jaw; vomerine and
constituted by marine fishes from the tropical and palatine teeth present, latter in a single series; sca-
warm temperate Indo-Pacific area and the subtro- les on body, cheeks and opercles but lacking on
pical parts of Eastern Atlantic Ocean (Kamohara, rest of head; smaller scales on bases of pectoral
1960). Randall (1984) recognized 40 valid species and caudal fins; dorsal, anal and ventral fins na-
and Heemstra (1986) about 50 species, including ked; lateral line continuous, slightly arched, over
several undescribed ones. In the eastern Atlantic pectoral fin; numerous pores in scaleless parts of
only one species, P. atlantica (Vaillant, 1887), head, but lacking in preopercular and opercular
was described from the Cape Verde Islands and is margin; opercle with a single, short, flat spine
endemic (Cadenat, 1937). This paper reports the above; dorsal fin with five spines gradually longer
first record of P. roseoviridis (Gilbert, 1905) in posteriorly and 23 soft rays; the last spine fully
the Southeast Atlantic, from the Valdivia Bank connected to first ray by a fin membrane; anal fin
and Vema seamount. with a feeble spine and 19-20 soft rays; all dorsal
and anal soft rays branched, the last to base; gill
Material and methods rakers short, represented by stout tubercles with 4-
Four Parapercis roseoviridis specimens 7 teeth; rosy-reddish colour in head and body,
were collected during two experimental surveys, whitish below; ten yellow cross bands arranged
VAL 96 and VAL 98, carried out by two spanish roughly in pairs, fading out dorsally and below
commercial bottom trawlers during the last trimes- lateral line; a yellowish band from posterior part
ter of 1996 and 1998 in the SE Atlantic. The spe- of eye toward preopercle angle; a red margined
cimens were frozen on board and later, in the la- band above base of pectoral fin; lips yellow; spi-
boratory, measurements and meristic characters nous dorsal reddish or blackish, the other fins yel-
were recorded. Afterwards the specimens were lowish, unmarked; no black blotch at base of cau-
preserved in 70% ethanol and stored in the fishes dal. Biometric and meristic characters are presen-
collection of the Instituto Español de Oceanogra- ted in table I.
fía in Vigo (IEOV).
Cybium 2000, 24(4): 411-299.
412 BAÑON ET AL.
Fig. 1. - Specimen of Parapercis roseoviridis, IEOV 01598, 190 mm SL, captured in Valdivia Bank on
18 Nov. 1998.
Distribution. - In the Pacific ocean, know Discussion
from Hawaiian islands (Gilbert, 1905) and Kyu- The realisation of experimental fishing
shu–Palau Ridge (Japan) (Yamakawa, 1982) and surveys in little known areas by commercial bot-
in the Atlantic ocean, Valdivia Bank and Vema tom trawlers permits us to discover the presence
Seamount. of species in areas where they had not previously

Table I. - Biometry and meristic characters of the four IEOV specimens of Parapercis roseoviridis.
First records of Parapercis roseoviridis in the Southeast Atlantic 413
been recorded. The specimens here described were
captured in Valdivia Bank (Fig. 2), but they are
also observed by one of the authors in Vema sea-
mount the 11 November 1997, at 31º37’S-8º23’E
and 113 m depth, although specimens from this
area were not preserved.
The specimens here studied coincide in
general terms with previous descriptions, but we
have found some differences.
According to the literature, the colour of
the spinous dorsal fin in this species is largely
blackish (Gilbert, 1905; Randall, 1984). Ya-
makawa (1982) does not describe this coloration
for the specimens of Japan but the photo attached
to text shows clearly this blackish membrane. We
could observe this character in three of the four
described specimens, and it was reddish in two of
Fig. 2. - Map of western Africa region showing
them, IEOV 03596 and IEOV 01598 (Fig. 1), and
the areas where specimens of P. roseoviridis were
blackish in the other one, IEOV 01698. Different
observed.
sexual colour phases are characteristic of some
species of this genus (Randall, 1984); the smaller
(female) fish often have a colour pattern that is islands. The presence of P. roseoviridis in Valdi-
different from the pattern of the larger (male) via Bank and Vema seamount extends its distribu-
specimens of the same species (Heemstra, 1986).
tion in seamounts and Islands of tropical and sub-
The presence of a reddish spinous dorsal fin in tropical waters of Pacific and Atlantic.
most of these specimens could be indicative of a
sexual dichromatism for this species, although,
Acknowledgements. - The authors would like to
after conservation, it was not possible to deter- thank Drs. J.E. Randall, J.-C. Quéro and M.E.
mine with centainty the sex in the specimens de- Anderson for their help in the determination of P.
scribed.
roseoviridis. The Instituto Español de Oceanogra-
The presence of a feeble spine in the anal fía supported this study.
fin has not been described before for this species,
however, this character is mentioned in the des-
criptions of numerous species of the genus (Shen,
REFERENCES
1983; Randall, 1984) and Heemstra (1986) men-
tioned this character in the family diagnosis based
ANDERSON M.E., 1992. - A new sandperch,
on genus Parapercis. The four specimens exami- Parapercis maritzi (Teleostei: Pinguipedi-
ned have this spine, although what is named spine dae), from South Africa. S. Afr. J. Zool.,
here may be really a soft ray (Kamohara, 1960).
27(4): 151-155.
The scales number in lateral line is 55-58 CADENAT J., 1937. - Recherches systématiques
for the specimens of Hawaii (Anderson, 1992) and sur les poissons littoraux de la côte occidenta-
62-63 for the specimens of Japan (Yamakawa,
le d’Afrique, récoltés par le navire Président
1982). Our specimens have 61-63 scales in lateral Théodore-Tissier, au cours de sa 5e croisière
line, similar to the number in Japanese specimens. (1936). Rev. Trav. Inst. Pêches Marit., 10(4):
Some of these differences could be rela-
508-511.
ted with the isolation of distinct populations, al- GILBERT C.H., 1905. - The aquatic resources of
though the scarcity of references to this species the Hawaiian islands, Part II, Section II. The
does not allow us to made any conclusions and the
deep sea fishes. Bull. U.S. Fish. Comm.,
study of more specimens is necessary. 23(2): 575-713.
HEEMSTRA P.C., 1986. - Mugiloididae. In:
The presence of P. roseoviridis in the
Atlantic is unexpected; until now, only one spe- Smith’s Sea Fishes (Smith M.M. & P.C.
Heemstra, eds), pp. 739-741. Johannesburg:
cies of the same genus, P. atlantica was recogni-
MacMillan South Africa Ltd.
zed for the east Atlantic, endemic of Cape Verde
414 BAÑON ET AL.
KAMOHARA T., 1960. - A review of the fishes VAILLANT M.L., 1887. - Sur la présence d’un
of the family Parapercidae found in the wa- poisson appartenant au genre Neopercis dans
ters of Japan. Rep. Usa Mar. Biol. Sta., 7(2): l’Atlantique. C. R. hebd. Acad. Sci. Paris,
1-14. 105: 1032-1033.
RANDALL J.E., 1984. - Two new Indo-Pacific YAMAKAWA T., 1982. - Parapercis roseoviri-
Mugiloidid fishes of the genus Parapercis. dis. In: Fishes of the Kyushu-Palau ridge and
Freshw. Mar. Aquar., 7(12): 41-49. Tosa Bay (Okamura O. et al., eds), p. 385.
SHEN S.C., 1983. - Study on Sand Perch (Mugi- Tokyo: JAMARC, Tosho Printing Co.
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36(2): 23-36.
Reçu le 21.10.1999.
Accepté pour publication 03.03.2000.