Redescription of Alburnus kotschyi Steindachner, 1863, with comments on Alburnus sellal adanensis Battalgazi, 1944 (Teleostei: Leuciscidae)
Author
Freyhof, Jörg
Author
Özuluğ, Müfit
Author
Kaya, Cüneyt
Author
Bayçelebi, Esra
Author
Turan, Davut
text
Zootaxa
2018
2018-02-22
4382
3
573
582
journal article
30687
10.11646/zootaxa.4382.3.8
8d5384b5-d0c6-476f-bf9e-ea0672c37962
1175-5326
1182982
3E4E32B9-FA82-4A62-971C-FEA0FC37CFFF
Redescription of
Alburnus kotschyi
Steindachner 1863
Fig. 1
+3
Material examined.
IUSHM 37900-253
,
neotype
,
79.2 mm
SL;
Turkey
:
Hatay prov
.:
stream Arsuz east of Arsuz
,
36.399N
35.886E
.
—
IUSHM 2017-1370
,
23
,
44–110 mm
SL;
Turkey
:
stream Çelik between Gölbaşı and Pazarcık
,
37.622N
37.503E
.
—
IUSHM 2017-1371
, 45–
101 mm
SL;
Turkey
:
stream Çelik at road south of Gölbaşı
,
37.623N
37.5034E
.
—
FFR
0 4661, 31,
71–106 mm
SL;
Turkey
:
Hatay
prov.: stream
Arsuz
at
Hacıahmetli
,
36.379N
35.930E
.
—
FFR
0 4663, 27,
75–109 mm
SL;
Turkey
:
Osmaniye
prov.
: stream
Karaçay
at
Yolçatı
bridge,
37.061N
36.112E
.
—
FFR
0 4665, 35,
49–94 mm
SL;
Turkey
:
Kahramanmaraş
prov.
: stream
Aksu
at
Pazarcık
,
37.526N
. 37.311E.—
FFR
0 0 868, 57,
51–141 mm
SL;
Turkey
:
Kahramanmaraş
prov.
: stream
Terbüzek
at
southern Göksun
,
38.001N
36.498E
.
—
FFR
0 0 999, 12,
56–94 mm
SL;
Turkey
:
Adana
prov.
: stream
Üçürge
at
western Çakallı
,
37.189N
35.101E
.
—
FFR
0 4664, 8,
50–91 mm
SL;
Turkey
:
Adana
prov.
: stream
Üçürge
at
northern Karaisalı
,
37.275N
35.061E
.
—
FSJF 2901
,
9
,
72–111
mm
SL;
Turkey
:
Kahramanmaraş
prov.
: stream
Sevdili
40 km
east of
Elbistan
,
38.255N
37.533E
.
Diagnosis.
The diagnosis is based on material from Arsuz, Ceyhan and Seyhan Rivers.
Alburnus kotschyi
is similar to
A. heckeli
,
A. sellal
and
A. timarensis
by having a prominent dark-brown or dark-grey lateral stripe (vs. absent in
A. baliki
,
A. caeruleus
,
A. qalilus
and
A. orontis
which have a pattern of irregularly set and shaped grey blotches on silvery background). Except the colour pattern,
A. kotschyi
is distinguished from
A
.
caeruleus
by having a more slender body (body depth at dorsal-fin origin 21–26% of SL vs. 26–34%) and having less branched anal-fin rays (9½–11½ vs. 13½–17½) and the ventral keel exposed 3–10 scales in front of anus (vs. scaleless).
Alburnus kotschyi
is distinguished from
A
.
orontis
by having less branched anal-fin rays (9½–11½ vs. 12½–15½), the ventral keel exposed 3–10 scales in front of anus (vs. keel exposed 0–2 scales) and a soft last simple dorsal-fin ray (vs. stiff in
A. orontis
).
Alburnus kotschyi
is distinguished from
A. heckeli
,
A. sellal
,
A. tarichi
and
A. timarensis
by having 49–59 total lateral line scales (vs.
77–93 in
A. heckeli
,
66–89 in
A. sellal
,
54–72 in
A. timarensis
,
70–93 in
A. tarichi
) and 9–12 gill rakers on first gill arch (vs.
13–17 in
A. timarensis
).
FIGURE 1.
Alburnus kotschyi
, IUSHM 37900-253, neotype, 79.2 mm SL; Turkey: Arsuz.
FIGURE 2.
Pseudophoxinus zekayi
, about 70 mm SL; Turkey: Arsuz, same data as IUSHM 36700-133.
FIGURE 3.
Alburnus kotschyi
, from the top, FSJF 2901, 100 mm SL; Turkey: stream Terbüzek; IUSHM 2017-1371, 100 mm SL; Turkey: stream Çelik.
Description.
See
Figure 1
+3 for general appearance of the
neotype
(IUSHM 37900-253) and other individuals. Body elongate, compressed. Dorsal, ventral profiles convex. Head short, interorbital area convex. Mouth oblique, lower jaw slightly projecting beyond upper jaw. Snout slightly pointed, its length smaller than interorbital distance, greater than eye diameter. Caudal peduncle depth 1.8–2.5 times in its length. Dorsal-fin margin straight, anal-fin margin slightly convex anteriorly, slightly concave posteriorly. Distance between pelvicfin origin and dorsal-fin origin equal to about ½ of pelvic-fin length. Anal-fin origin one scale behind last dorsal-fin ray. Keel between anus and pelvic-fin base exposed for 3–10 scales in front of anus. Maximum size
170 mm
SL.
Dorsal fin with 3 simple and 7½ (1)–8½ (75) branched rays. Anal fin with 3 simple and 9½ (13), 10½ (48) and 11½ (15) branched rays. Pectoral fin with 1 simple and 13 (5), 14 (6), 15 (28), 16 (29) and 17 (8) branched rays, outer margin slightly convex. Pelvic fin 1 simple and 8 (76) branched rays, outer margin convex. Caudal-fin deeply forked and lobes pointed. Axillary pelvic lobe present. Lateral line complete, reaching caudal-fin base, perforating 46-56 scales on body and 2 or 3 on caudal-fin base; 49 (1), 50 (4), 51 (9), 52 (12), 53 (10), 54 (8), 55 (10)–56 (9), 57 (9), 58 (3) and 59 (1) total lateral line scales. 9 (7), 10 (40) and 11 (29) scale rows lateral line and dorsal-fin origin; 4 (28), 5 (34) and 6 (14) scale rows lateral line and anal-fin origin. Ventral keel, slightly prominent, exposed for 3–10 scales in front of anus. 9 (1), 10 (9), 11 (9) and 12 (3) short gill rakers on first gill arch. Pharyngeal teeth 2.5–5.2 (5) or 2.5–5.1 (5).
Coloration.
Back and upper part of flank pale brown, lower part of flank and belly silvery in life. In formalin preserved fish, back and upper flank dark brown, lower part of flank and belly yellowish. A dark-brown or grey stripe present on upper part of flank from posterior margin of operculum to caudal peduncle, distinct on both anterior and posterior parts of flank, its width approximately equal to eye diameter. Scale pockets on back and flank above or slightly below lateral line dark-brown or grey. Dorsal and caudal fins grey; anal, pelvic and pectoral fins yellowish or hyaline. Small black dots on fin rays.
Distribution
.
Alburnus kotschyi
is known from Arsuz, Seyhan and Ceyhan Rivers flowing to the Mediterranean Sea in southern
Turkey
.
Alburnus
from Arsuz, Ceyhan and Seyhan could not be distinguished and also molecular data presented by
Geiger
et al
. (2014)
suggest that these populations are conspecific.