Brooksia rostrata Traustedt, 1893

Ishak, Nurul Huda Binti Ahmad, ‘ Aliah, Nur, Adam, Binti & Kassim, Zaleha, 2018, A taxonomic revision of the genus Thalia Blumenbach, 1798; Weelia Yount, 1954; Brooksia Metcalf, 1918 (Salpida: Salpidae) from East Coast of Peninsular Malaysia, Zootaxa 4422 (4), pp. 451-477: 467-468

publication ID

https://doi.org/10.11646/zootaxa.4422.4.1

publication LSID

lsid:zoobank.org:pub:678C3281-5FAD-4BEA-B08A-2584E5897B4C

persistent identifier

http://treatment.plazi.org/id/CF1C87B4-FFEA-4533-FF77-FA10FD6EFEDD

treatment provided by

Plazi

scientific name

Brooksia rostrata Traustedt, 1893
status

 

4. Brooksia rostrata Traustedt, 1893 

Salpa rostrata Traustedt, 1893  , pp. 8, pl. I, figs. 1 – 4 ( cited in Thompson 1948 and Sewell 1926; Apstein, 1894, pp. 16, 36, pl. ii, figs. 9 View Figure , 17 – 19 ( cited in Sewell 1926)

Brooksia rostrata  Metcalf, 1918, pp. 50 (cited in Sewell 1926); Fraser, 1947; Thompson, 1948: 120, pl. 43, pl. 45; Yount, 1954; van Soest, 1975; Chihara & Murano, 1997: 1381, pl. 7; Godeaux: 1998, pp. 287, fig. 17.16c; Kott, 2005; Hereu & Suárez- Morales, 2012; Garic & Batistic, 2016; Purushothaman et al. 2017; Franco et al. 2017

Specimens examined. In my study, this species was the present at 5 sampling sites. C2: 15 solitary zooids, 31 aggregate zooids, 5°25'33.93"N, 103°17'32.72"E, Jun 2016; C3: 16 solitary zooids, 13 aggregate zooids, 5°28'54.80"N, 103°22'55.42"E, Jun 2016; D1: 1 aggregate zooid, 5°14'5.31"N, 103°14'40.12"E, July 2016; D2: 4 aggregate zooid, 5°14'5.20"N, 103°16'36.04"E, July 2016; D3; 3 aggregate zooids, 5°15'50.06"N, 103°17'44.13"E, July 2016. Malaysia: East Cost of Peninsular Malaysia  . UMTTn 0 0 0 7.

Description. Solitary ( Fig. 8a View Figure , Top & Middle; 8b): Body length reach 4.3 mm without anterior projection, and reaching 6 mm including the anterior projection. Body is elongatedly cylindrical; squaring posteriorly while strongly developing a projection anteriorly, below the lower lipAbout lip, bearing four longitudinal muscles; which are extensions of the dorsal sphincters, and two ventral longitudinal muscles. The projection mayAbout may be as long as the body, although in most specimen it is shorter. The test is lost in this specimen. There are 7 body muscles observed in the specimens. The muscles are arranged in two dorsal group (MI– MIII and MIVAbout MIV – MVII), where MI is joined by the intermediate muscle and MIII and MIVAbout MIV are converging laterally. The body muscles are ventrally interrupted by two longitudinal muscles which run from MVII to the anterior tip of the anterior projection. The dorsal tubercle located close in front of the ganglion, very slightly curved. The ganglion carries the broad horseshoe eye and located in front of MI. The alimentary canal is coiled into a loose nucleus, located immediately behind MVII. The endostyle is slightly curved, reaches back to at least near MIVAbout MIV. Ihle states that it reaches between MIVAbout MIV and MV, but according to Traustedt it only reaches to MIII. This specimen resembles more to Ihle than to Traustedt. The gill is slender. Stolon runs forward in a more or less straight course on the mid ventral line.

Aggregate ( Fig. 8a View Figure , Bottom; 8b): Body is oval shaped. The test is lost in this specimen. Due to the poor state of preserved specimens, it is impossible to study the body muscles. Van Soest (p. 116) stated the number of fibers could vary from 14–26 fibers. This specimen agree to the range of fibers count. The alimentary canal is coiled into a rather tight nucleus, which lies at the posterior most part of the body. The endostyle is short, bent to a hook in front, near its point of origination neighboring behind the oral siphon. Ovary and embryo is situated between MIII and M IV on the right side. The gills are slender.

Remarks. Both solitary and aggregate zooids of this species were found during the sampling of this study. The aggregate seems to be unfit for critical taxonomy study due to poor preservation that caused specimen shrinkage. The solitary and aggregate zooids conforming to Thompson's (1948) figures. Fedele (1926) figured an aggregate specimen with very long attachment organs; no such specimens were encountered in the present material.

Distribution. Distributional data on Brooksia rostrata  reported that it mainly occurred in temperate waters (van Soest 1975). Records from the Atlantic Ocean includes the occurrence on southeast of Bermuda (Madin et al. 1996) and Caribbean Sea and the Gulf of Mexico ( Hereu & Suárez-Morales 2012). It has also been found in the Arabian Sea (including the Laccadive Sea), the BayAbout Bay of Bengal and the Andaman Sea ( Sewell 1926), Gulf of Naples ( Fedele 1926), Red Sea and Gulf of Suez ( Godeaux 1974), Gulf of Aden and Hanish HillAbout Hill ( Godeaux 1987) and Adriatic Sea ( Sigl 1912; Batistić et al. 2014). Records found from the Pacific Ocean includes ( Yount 1954; 1958), Australian Seas ( Thompson 1948), Province of Izu ( Tokioka 1937; 1960), European waters (Costello et al. 2001), Kaoping Trench, southwestern waters of Taiwan ( Tew & Lo 2005), Taiwan waters ( Liao et al. 2013 & Franco et al. 2017) and Indo-West Pacific (van der Land 2008). The compilation of previous literature and present data distribution of Brooksia rostrata  is shown in Figure 9 View Figure .

lip

Universit� de Lille

may

Adygean State University

MIV

Universita' degli Studi di Milano, Medicina Veterinaria, Sez. Parassitologia

Bay

Mus�um d'Histoire Naturelle de Bayonne

Hill

Sir Harold Hillier Gardens

Kingdom

Animalia

Phylum

Chordata

Class

Thaliacea

Order

Salpida

Family

Salpidae

Genus

Brooksia

Loc

Brooksia rostrata Traustedt, 1893

Ishak, Nurul Huda Binti Ahmad, ‘ Aliah, Nur, Adam, Binti & Kassim, Zaleha 2018

2018
Loc

rostrata

Traustedt 1893

1893
Loc

Brooksia rostrata

Traustedt 1893

1893