Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
Author
Albert, James S.
text
Zootaxa
2017
2017-08-08
4318
3
401
438
journal article
32158
10.11646/zootaxa.4318.3.1
8d4c68da-48ac-44d9-982b-bb2a13ed886c
1175-5326
887692
2848Cac4-F301-4A47-B6Cd-366051Ad2B5E
Gymnotus carapo carapo
New Subspecies
Figure 3
C,
Tables 3
and
4
Syntypes:
NRM 64 (1),
262 mm
; NRM 8224 (1),
331 mm
; UUZM Linn. coll. 56 (1),
293 mm
. Collected in the first half of the 18th Century near Paramaribo, Suriname (Lönnberg 1896:23;
Fernholm & Wheeler 1983
:216–217;
Wheeler 1991
:162–163, fig. 6).
Non-Types:
MCZ
31219 (1),
262 mm
,
Suriname
(exact locality unknown)
.
UMMZ
190414
, 260
mm,
Suriname
,
Brokopondo
,
Suriname River
,
Tapeoeripa creek
near
Brokopondo village
(
05°04’N
,
054°58’W
)
.
UMMZ
190414
(5),
71–214 mm
,
Suriname
,
Brokopondo
,
Suriname River
,
Tapeoeripa creek
near.
Brokopondo village
(
05°04’N
,
054°58’W
)
.
USNM 225274
(8),
81–318 mm
,
Suriname
,
Nickerie
,
Lucie River
, upstream of
Amotopo-Camp Geologie Rd.
(
03°36’N
,
57°37’W
)
.
USNM 225275
(11),
81–270 mm
,
Suriname
,
Nickerie
,
Corantijn River
,
350 m
downstream from
Wilhelm II
falls (
03°34’N
,
057°15’W
)
.
USNM 225276
(16),
75–148 mm
,
Suriname
,
Nickerie
, Corantijn River, Dalbana Creek, ca.
3 km
upstream from
Amotopo–Camp Geologie Rd.
(
04°20’N
,
057°37’W
)
.
USNM 225284
(10),
54–143 mm
,
Suriname
,
Nickerie
,
Corantijn River
,
Lana Creek
, ca.
4 km
from intersection with
W. Corantijn River
(
05°28’N
,
057°15’W
)
.
USNM 225285
(12),
85–257 mm
,
Suriname
,
Nickerie
,
Corantijn River
, creek south of
Matapi
, approx.
2 km
downstream of
Cow Falls
(
04°59’N
,
057°38’W
)
.
USNM 225286
(15),
80–319 mm
,
Suriname
,
Nickerie
,
Corantijn River
,
Koekwie creek
(
05°31’N
,
057°10’W
)
.
USNM 225290
(19),
14–157 mm
,
Suriname
,
Nickerie
,
Corantijn River
,
Dalibane Creek
,
Camp Dacclemmen
(
05°34’N
,
057°11’W
)
.
USNM 225297
(14),
53–137 mm
,
Suriname
,
Nickerie
,
Corantijn River
, stream on S. side
Lucie River
(
03°35’N
,
057°39’W
)
.
UF
180165
(6),
185–337 mm
,
Suriname
,
Para
,
Kola Kreek
aff.
Para River
(
05°27’8.820”N
,
055°14’42.060”W
)
.
UF
180169
(5),
182–340 mm
,
Suriname
,
Brokopondo
,
Marshall Kreek
, aff.
Suriname River
(
05°14’24.9”N
,
055°05’58.6”W
)
.
UF
180173
(11),
34–72 mm
; UF
180175
(2),
65–219 mm
,
Suriname
,
Marowijne
,
Cottica Rivier
, aff.
Commewijne River
(
05°35.21’N
,
054°17.11’W
)
.
Description:
Specimens of
G. carapo
from
Suriname
overlap substantially in morphometric and meristic PCspace with specimens from other localities (
Figures 4
,
5
, and 12).
Gymnotus carapo carapo
is characterized by the following combination of statistically significant (p <0.01) traits when compared to the rest of the species as a whole (see Principal Components Analyses and t-tests): long preorbital distance (
PR
31.4%–40.2% HL, mean 36.3% vs. 28.0%–39.4%, mean 34.6% in all other subspecies) and wide mouth (MW 33.6%–47.6% HL, mean 43.0% vs. 32.2%–49.0%, mean 40.2% in all other subspecies).
Distribution:
Known from Atlantic coastal drainages of
Suriname
and
French Guiana
, including the
Brokopondo
,
Nickerie
, and
Suriname
districts of
Suriname
in the Lucie,
Suriname
, and Corantijn rivers, and all departments of
French Guiana
(
Figure 2
B).
Etymology:
Subspecific epithet derived from the specific epithet.