Taxonomy and diversity of Hydrozoa (Cnidaria, Medusozoa) of La Paz Bay, Gulf of California
Author
Mendoza-Becerril, María A.
CONACYT-Centro de Investigaciones Biológicas del Noroeste S. C., Inst. Politécnico Nacional 195, La Paz, BCS 23096, México. m _ angelesmb @ hotmail. com; https: // orcid. org / 0000 - 0002 - 9449 - 0543
Author
Estrada-González, Mariae C.
Universidad Autónoma de Baja California Sur, Carretera al Sur km 5.5, La Paz, BCS 23080, México.
Author
Mazariegos-Villarreal, Alejandra
Centro de Investigaciones Biológicas del Noroeste S. C., Inst. Politécnico Nacional 195, La Paz, BCS 23096, México. amaza 04 @ cibnor. mx; https: // orcid. org / 0000 - 0001 - 8932 - 0462
Author
Restrepo-Avendaño, Luisa
Grupo de Investigación en Limnología Básica y Experimental y Biología y Taxonomía Marina (LimnoBasE y Biotamar), Instituto de Biología, Universidad de Antioquia, Apartado 1226, Medellín, 05001000, Colombia.
Author
Villar-Beltrán, Rogelio D.
Facultad de Ciencias Biológicas y Agropecuarias, Campus Tuxpan, km 7.5 Carretera Tuxpan-Tampico, Tuxpan, Veracruz 92850, México. biolm. rogelio. villar @ gmail. com; https: // orcid. org / 0000 - 0001 - 5459 - 9715
Author
Agüero, José
Medusozoa México, La Paz, BCS 23060, México. j _ zans @ yahoo. com; https: // orcid. org / 0000 - 0003 - 2565 - 0256
Author
Cunha, Amanda F.
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo (USP), Rua do Matão, Travessa 14, 101, São Paulo 05508 - 090, Brazil. amanfcunha @ gmail. com; https: // orcid. org / 0000 - 0003 - 3276 - 2651
text
Zootaxa
2020
2020-07-01
4808
1
1
37
journal article
10.11646/zootaxa.4808.1.1
1175-5326
3927861
64E656F6-FBD7-4BA2-B399-B10A97CBEF72
Eudendrium capillare
Alder, 1856
Figs. 4
B–E
Eudendrium capillare
Alder 1856: 355
, pl. 12, figs. 9–12.
Eudendrium tenue
Agassiz 1865: 160
, fig. 250.—
Fraser 1938a: 20
.—
Fraser 1938b: 109
.—
Fraser 1948: 199
.
Type
locality.
Embleton Bay
,
Northumberland
,
Great Britain
(
Alder 1856
)
.
Material examined.
Polyp—PB6_8, sampling site 3 (1), mature, male, on rock, Bryozoa, and Polychaeta.
Description.
Colony small (
4 mm
high), stolonal and erect, monosiphonic, arising from creeping hydrorhiza, hydrocaulus alternately branched. Exoskeleton with visible layer corresponding to perisarc. Perisarc thin (
2.8–4.6 µm
wide), annulated at the base of the hydrocaulus and branches. Hydranths urn-shaped (
0.4 mm
long from base to hypostome,
0.3 mm
wide) with proximal perisarc groove; gastroderm with black pigment spots, without ring of nematocysts above the perisarc groove. Hypostome large, knob-shaped; one whorl of 19–24 solid and filiform tentacles. Male gonophores as fixed sporosacs, with up to three chambers each, on reduced hydranths.
Nematocysts (length x diam.). Heterotrichous microbasic eurytele (7.2–9.7 x
3.4–4.2 µm
).
More detailed description in
Calder (1988)
and
Marques (2001)
.
Taxonomic status.
Accepted. AphiaID 117544.
Remarks.
This species is differentiated from
Eudendrium ramosum
(
Linnaeus, 1758
)
based on the size of the heterotrichous microbasic euryteles, which are larger in
E. ramosum
(24.7–33.0 µm long,
10.8–17.4 µm
wide) (
Marques 2001
).
Distribution.
Species frequently distributed in warm waters of the Atlantic, Indian, and Pacific oceans (
Calder 1988
;
Marques 2001
). In Mexican Pacific, the species was reported in Baja California (Cedros
Island and Isla
Partida) (
Fraser 1938b
;
Fraser 1948
), Baja California Sur (San Juanico Bay and Dewey Channel) (
Fraser 1948
), Colima (Clarion Island) (
Fraser 1938a
;
Fraser 1948
) and Guerrero (White Friars Islands) (
Fraser 1938a
).