Faunistic survey of Hydromedusae (Cnidaria, Medusozoa) from the coast of Paraná State, Southern Brazil
Author
Nagata, Renato Mitsuo
Author
Júnior, Miodeli Nogueira
Author
Haddad, Maria Angélica
text
Zootaxa
2014
3768
3
291
326
journal article
46353
10.11646/zootaxa.3768.3.3
a21a2d8d-94b7-4b57-bcdd-495c6e5a54dc
1175-5326
252337
D223B938-DB44-4738-AA6D-9C5627B9C7A1
Cirrholovenia tetranema
Kramp
(
Fig. 14
)
References consulted.
Kramp 1959b
: 254, fig. 17.
Kramp 1961
: 173.
Kramp 1968
: 79–80, fig. 214.
Goy 1979
: 276, fig. 14.
Kubota 1995
: 365–378, figs 2–3 and 6.
Bouillon 1999
: 423, fig. 3.84.
Tronolone 2001
: 99–102, figs 24 A–C. Bouillon
et al.
2004: 134, figs 70 A–
C. Xu & Huang 2004
: 111–113, fig. 3.
Nogueira 2012
, fig. 8.
Material.
Municipality of Pontal do Paraná, Balneário de Praia de Leste (
25º46’32”S
–
48º12’15”W
):
24/02/ 1999
—
1 specimen
; (
25º48’10”S
–
48º04’90”W
):
24/03/1999
—
1 specimen
.
Reference specimens deposited.
Dzoo-Cn 247,
1 specimen
.
World distribution.
Indian Ocean;
India
(
Navas-Pereira & Vannucci 1991
), Strait of
Malacca
, and
Philippines
(
Kramp 1968
). Pacific Ocean;
Japan
(
Kubota 1995
). Mediterranean Sea (Bouillon
et al.
2004). Atlantic Ocean;
Brazil
(see below).
Distribution in
Brazil
.
State of Pernambuco (
Goy 1979
), and from São Paulo to Rio Grande do Sul (Moreira 1970, 1975; Navas-Pereira 1981;
Tronolone 2001
;
Nogueira 2012
; this study).
Description.
Umbrella nearly hemispherical, as high as broad,
1.8–2.1 mm
in umbrellar height. Mesoglea thin, velum narrow. Manubrium small, cruciform, mouth with 4 short and simple lips. Gonads voluminous, cylindrical, along almost whole length of radial canals. 4 wide tentacular bulbs, without rudimentary bulbs. Although previous investigators have reported 4 to 15 marginal cirri per quadrant (
Kramp 1959b
,
1968
;
Kubota 1995
;
Bouillon 1999
;
Tronolone, 2001
), the two specimens analyzed had only 1–2; cirri might have been lost during collection. Four interradial statocysts, or 8–9 adradial (
Kramp 1959b
;
Kubota 1995
).
Systematic remarks.
Four valid species are in the genus (
Schuchert 2013
).
Cirrholovenia polynema
Kramp
is the largest (up to
12 mm
in diameter), has the largest number of tentacles (32–40), cirri (up to 8 between tentacles), statocysts (2 between tentacles), thick mesoglea, crenulated lips, and wide and square mouth and manubrium in fixed animals (
Kramp 1959b
,
1968
).
Cirrholovenia reticulata
Xu & Huang 2004
has a thick mesoglea and the exumbrella covered by a net of papillae (
Xu & Huang 2004
).
Our specimens were significantly larger than those previously reported in the literature, which measured about
1.5 mm
in diameter (
Kramp 1959b
,
1961
;
Tronolone 2001
; Bouillon
et al.
2004). Only
Kubota (1995)
reported specimens from
Japan
up to
2.5 mm
.
Biological data.
C. tetranema
is rare in
Brazil
, usually found in small numbers, in shallow waters (Navas-
Pereira 1981
;
Tronolone 2001
) or in estuaries, such as São Francisco do Sul Bay (
Nogueira 2012
). According to
Moreira (1978)
the species tolerates low salinities in the laboratory.
Kubota (1995)
described stages of young medusae, their growth, cnidome, and spawning time of gametes.