Antennella secundaria ( Gmelin, 1791 ), Gmelin, 1791

Peña Cantero, Álvaro L. & Horton, Tammy, 2017, Benthic hydroids (Cnidaria, Hydrozoa) from bathyal and abyssal depths of the Northeast Atlantic held in the modern Discovery Collections, Zootaxa 4347 (1), pp. 1-30: 20-23

publication ID

https://doi.org/10.11646/zootaxa.4347.1.1

publication LSID

lsid:zoobank.org:pub:176D72B0-0DD6-4D51-83CA-D47C2268A3CF

DOI

http://doi.org/10.5281/zenodo.5248594

persistent identifier

http://treatment.plazi.org/id/03F0943B-FFCF-4D02-0BF8-F8B3FBAD117E

treatment provided by

Plazi

scientific name

Antennella secundaria ( Gmelin, 1791 )
status

 

Antennella secundaria ( Gmelin, 1791)  

( Fig. 9A–E View FIGURE 9 )

Antennella secundaria   — Ansín Agís et al., 2001: 140 –145, fig. 63 (synonymy).

Material examined. 13881#1, five stems up to 10 mm high, on Sertularella gayi   , no gonothecae.

Description. Stems unbranched, up to 10 mm high, and with up to six hydrothecae. Stem resting on short apophysis. First two cauline internodes with two nematothecae, third internode longer and provided with six nematothecae ( Fig. 9A View FIGURE 9 ). Remaining stem divided by alternating oblique and transverse nodes into an alternate series of hydrothecate/ahydrothecate internodes ( Fig. 9B–D View FIGURE 9 ). Ahydrothecate internodes typically with three medial nematothecae ( Fig. 9C View FIGURE 9 ), although internodes with only one also present ( Fig. 9B View FIGURE 9 ). Hydrothecate internodes with one hydrotheca and four nematothecae: two flanking hydrothecal aperture on long pedicels ( Fig. 9E View FIGURE 9 ) (frequently one without pedicel), one nematotheca at axil between adcauline hydrothecal wall and internode ( Fig. 9D View FIGURE 9 ) and a mesial infrathecal nematotheca not reaching hydrothecal basal part ( Fig. 9B–D View FIGURE 9 ). All nematothecae bi-chambered. Hydrotheca cup-shaped ( Fig. 9E View FIGURE 9 ). Hydrothecal wall roughly straight in lateral view, but distinctly widening at distal part of adcauline side. Hydrothecal aperture circular; rim laterally concave ( Fig. 9E View FIGURE 9 ).

Remarks. See Calder (1997b), Schuchert (1997) or Ansín Agís et al. (2001) for a wide discussion on the species.

Ecology and distribution. This is a eurybathic species, known between 0 ( Millard 1975) and 2700 m (Vervoort 2006); present material collected from the Porcupine Seabight at a depth of 863 m. Worldwide distribution in temperate, subtropical and tropical seas (Vervoort 2006).

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Halopterididae

Genus

Antennella

Loc

Antennella secundaria ( Gmelin, 1791 )

Peña Cantero, Álvaro L. & Horton, Tammy 2017
2017
Loc

Antennella secundaria

Ansin 2001: 140
2001