Distaplia stylifera ( Kowalevsky, 1874 ), Kowalevsky, 1874

Monniot, Françoise, 2012, Some ascidians from the southern coast of Madagascar collected during the “ AtimoVatae ” survey, Zootaxa 3197, pp. 1-42: 33

publication ID

http://doi.org/ 10.5281/zenodo.246182

DOI

http://doi.org/10.5281/zenodo.4893815

persistent identifier

http://treatment.plazi.org/id/3055E11F-FFB0-FFB1-71A5-C8E4FDAE6C0A

treatment provided by

Plazi

scientific name

Distaplia stylifera ( Kowalevsky, 1874 )
status

 

Distaplia stylifera ( Kowalevsky, 1874)  

( Figure 27 View FIGURE 27. A B)

Didemnum stylifera Kowalevsky 1874: 43   , Red Sea

Distaplia stylifera: Kott 1990: 127   fig. 46 pl. 9 f–g, and synonymy. Monniot F. & Monniot C. 2001: 258 fig. 119 C. and synonymy, widely distributed

Stations. TA 52 ( MNHN A 3 DIS 104). TA 60 ( MNHN A 3 DIS 103).

Three colonies, one with a short peduncle and two others sessile, the largest 15mm in diameter, have kept their orange colour in formalin. The consistency of the tunic is spongy, the pigment is limited to the upper part of the colonies. The zooids form circular systems. They are small and contracted, colourless. The atrial languet is large and wide. The 4 rows of stigmata lack parastigmatic vessels. The gut loop is wide with a short stomach asymmetrical and longitudinally folded. A well marked annular widening takes place between the stomach and the intestine. The gonads hang below the abdomen ( Fig. 27 View FIGURE 27. A B). The testis has 5 to 6 vesicles in a rosette; the sperm duct ( Fig. 27 View FIGURE 27. A B) begins with a deep loop directed posteriorly to encircle the single oocyte before running upwards to the gut loop. No larvae are present in these small colonies.

The genus Distaplia   as opposed to Sycozoa   is defined as having parastigmatic vessels in the branchial sac and this is not the case here. Kott (1990) mentioned that the parastigmatic vessels are sometimes missing in D. stylifera   which has a very constant anatomy around the world.

D. stylifera   is recorded in many places in the Pacific and Atlantic oceans, in the Red Sea, but for the first time here in the western Indian Ocean.

MNHN

Museum National d'Histoire Naturelle

DIS

Dinamation International Society

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Enterogona

Family

Holozoidae

Genus

Distaplia

Loc

Distaplia stylifera ( Kowalevsky, 1874 )

Monniot, Françoise 2012
2012
Loc

Distaplia stylifera:

Monniot 2001: 258
Kott 1990: 127
1990
Loc

Didemnum stylifera

Kowalevsky 1874: 43
1874