Prionospio membranacea Imajima, 1990

Abe, Hirokazu & Sato-Okoshi, Waka, 2021, Molecular identification and larval morphology of spionid polychaetes (Annelida, Spionidae) from northeastern Japan, ZooKeys 1015, pp. 1-86 : 1

publication ID

https://dx.doi.org/10.3897/zookeys.1015.54387

publication LSID

lsid:zoobank.org:pub:F6BD9213-9DB7-4564-AA00-3C61B2F43B2D

persistent identifier

https://treatment.plazi.org/id/EBD5ACCC-440D-5B40-850C-F2A1A775CBA1

treatment provided by

ZooKeys by Pensoft

scientific name

Prionospio membranacea Imajima, 1990
status

 

Prionospio membranacea Imajima, 1990 Fig. 5E-G View Figure 5

Larval morphology.

Long and thin in shape. Prostomium rounded anteriorly, lateral parts of peristomium not especially well demarcated. Two pairs of red or dark red eyes arranged somewhat in trapezoidal shape, lateral pair kidney-shaped and situated anteriorly. Small caruncle develop in late larvae, extends posteriorly from posterior part of prostomium (Fig. 5G View Figure 5 ). In late larvae branchial anlages occur from chaetiger II, pygidium acquires anal cirri (Fig. 5G View Figure 5 ). Palps not yet developed in 15- and 20-chaetiger larva (Fig. 5E, F View Figure 5 ) but developed in 24-chaetiger larva (Fig. 5G View Figure 5 ). Pigmentation absent except eyes.

Remarks.

Adult individuals of this species were collected from muddy bottom sediments at 22 m depth in Onagawa Bay in December 2011 by using a Smith-McIntyre grab sampler. The species was referred to P. membranacea as the adult morphology agrees with the descriptions of this species by Imajima (1990b). The larvae and adults were confirmed to match (18S: 1752/1752 and 1747/1750 except for gaps, 16S: 502/505 bp) using molecular data (Fig. 2 View Figure 2 ). Planktonic larvae of this species were found in Onagawa Bay during August to October.

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Spionida

Family

Spionidae

Genus

Prionospio