Lytocarpia brevirostris ( Busk, 1852 )

Chakraborty, Oishinee & Raghunathan, C., 2020, Notes on seven Aglaopheniids (Cnidaria: Hydrozoa: Aglaopheniidae) from Andaman and Nicobar Islands with three new records to India, Zootaxa 4790 (2), pp. 291-317 : 298-300

publication ID

https://doi.org/ 10.11646/zootaxa.4790.2.6

publication LSID

lsid:zoobank.org:pub:CDBDED59-95EE-4666-A4B6-F33AD6AA31E5

DOI

https://doi.org/10.5281/zenodo.10564133

persistent identifier

https://treatment.plazi.org/id/039187E0-FF8E-FFB5-FF13-9C2CFEE6FE86

treatment provided by

Plazi

scientific name

Lytocarpia brevirostris ( Busk, 1852 )
status

 

Lytocarpia brevirostris ( Busk, 1852) View in CoL

( Fig. 2c View FIGURE 2 , 3 View FIGURE 3 d–f)

Plumularia brevirostris Busk, 1852 ; 397.

Aglaophenia brevirostris Kirchenpauer, 1872: 27 ; Bale, 1884: 169; Kirkpatrick, 1890: 611; Bale, 1913: 135.

Plumularia vitana Kirchenpauer, 1872: 34 .

Aglaophenia maldivensis Borradaile, 1905: 843 View in CoL ; Billard, 1913: 91.

Thecocarpus brevirostris Billard, 1910: 51 ; 1913: 89; Briggs, 1918: 34, 45; Stechow, 1919: 137; Bedot, 1921 a: 332; 1922: 157; Jarvis, 1922: 350; Pennycuik, 1959: 187; Rees & Thursfield, 1965: 186; Millard, 1968: 254; Vasseur, 1974: 158; Millard, 1975: 454; 1978: 199; Tang, 1991: 32–33.

Lytocarpia brevirostris Stechow, 1922:151 View in CoL ; 1923: 245; Ryland & Gibbons, 1991: 545–546; Bouillon et al., 1995: 36; Irving, 1995: 324; Watson, 2002: 347; Vervoort & Watson, 2003: 306; Gravier-Bonnet and Bourmaud, 2012: 106, 114, 120; Di Camillo et al., 2012: 525.

Material examined. Stn. 27: 07.x. 2016, 11 m; Stn. 30: 06.x. 2016, 10 m; Stn. 33: 06.x. 2016, 18 m; Stn. 35: 23.iii. 2018, 13 m; Stn. 48: 28.xii. 2017, 13 m.

Description. Colonies pinnate with second order of branching ( Fig. 3d View FIGURE 3 ). Hydrocaulus polysiphonic and hydroclades alternately arranged. Hydrocaulus divided into internodes; internodes bearing hydrocladial apophyses. Hydrocladial apophysis always associated with one anteriorly placed mamelon and two large nematothecae with double opening, one inferior nematotheca and one axillary anterior nematotheca ( Fig. 3f View FIGURE 3 ). Hydrocladia segmented by oblique nodes with overlapping hydrothecae. Hydrotheca elongate with one prominent abcauline tooth and six lateral teeth, adcauline tooth absent ( Fig. 2c View FIGURE 2 ). Adcauline hydrothecal wall more or less straight and abcauline hydrothecal wall sinuous. Hydrotheca with a short intra-thecal septum towards the lower adcauline side. Single hydrotheca associated with two lateral nematothecae and one median inferior nematotheca. Lateral nematothecae directed upwards. Median nematotheca adnate to the hydrotheca for half its length and the rest free, directed away from the hydrotheca. Median inferior nematotheca not reaching the hydrothecal margin in length. Reproductive structures observed as closed corbulae that replaced the hydrocladium ( Fig. 3e View FIGURE 3 ). Corbulae bears six to eight leaf-like ribs. Corbulae axis divided into segments by oblique nodes; first segment with a hydrotheca and three nematothecae; one median inferior and two laterals. Proximal portion of each rib with a hydrotheca and two lateral nematothecae, median inferior nematotheca absent. Subsequent portion of the ribs with numerous nematothecae.

Colour. Yellow, in live colonies

Remarks. In the present study, the species was recorded beyond the depth of 10 m up to 13 m. In terms of bathymetric distribution of the species, it has been recorded as stenobathic between 12–30 m ( Gravier-Bonnet and Bourmaud, 2012) from Baa atoll. In another study, from Bunaken Marine National Park, Indonesia, the species was recorded to have a wide vertical distribution, being more abundant in the extremes and rare in the 10–30 m depth range ( Di Camillo et al. 2011). The species is a new record to Indian waters.

Substrate. The colonies were observed to be growing on rocks, boulders and in crevices.

Distribution. Type locality; off Cumberland Island, Queensland.

India; Andaman and Nicobar Islands (Present study).

Elsewhere; South Pacific Islands, Northern Australia, tropical Indian Ocean from India to Africa (Di Camillo et al. 2012).

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Aglaopheniidae

Genus

Lytocarpia

Loc

Lytocarpia brevirostris ( Busk, 1852 )

Chakraborty, Oishinee & Raghunathan, C. 2020
2020
Loc

Lytocarpia brevirostris

Gravier-Bonnet, N. & Bourmaud, C. A. - F. 2012: 106
Vervoort, W. & Watson, J. E. 2003: 306
Watson, J. E. 2002: 347
Bouillon, J. & Massin, C. & Kresevic, R. 1995: 36
Irving, R. A. 1995: 324
Ryland, J. S. & Gibbons, M. J. 1991: 545
1991
Loc

Thecocarpus brevirostris

Tang, Z. 1991: 32
Millard, N. A. H. 1978: 199
Millard, N. A. H. 1975: 454
Vasseur P 1974: 158
Millard, N. A. H. 1968: 254
Rees, W. J. & Thursfield, S. 1965: 186
Pennycuik, P. R. 1959: 187
Jarvis, F. E. 1922: 350
Stechow, E. 1919: 137
Briggs, E. A. 1918: 34
Billard, A. 1913: 89
Billard, A. 1910: 51
1910
Loc

Aglaophenia maldivensis

Billard, A. 1913: 91
Borradaile, L. A. 1905: 843
1905
Loc

Aglaophenia brevirostris

Bale W. M. 1913: 135
Kirkpatrick, R. 1890: 611
Bale, W. M. 1884: 169
Kirchenpauer, G. H. 1872: 27
1872
Loc

Plumularia vitana

Kirchenpauer, G. H. 1872: 34
1872
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