Document of bibliographic reference 332153

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Morphology and reproductive biology of a new Pseudopolydora (Annelida: Spionidae) species from the Arabian Gulf

Abstract

The Asian Pacific spionid polychaete worm Pseudopolydora paucibranchiata (Okuda, 1937) has been repeatedly reported from the Arabian Gulf and the Arabian Sea. Our recent molecular study showed that the Pacific and the Arabian populations of these worms are not conspecific. Here we describe adult, gamete, and larval morphology of worms from the Arabian Gulf, Kuwait, as the new species Pseudopolydora arabica sp. nov. Adults are characterized by the presence of intense yellow pigment on the prostomium, the dorsal side of the anterior chaetigers, and up to 50 ramified yellow chromatophores on each palp. Males produce thread-like wavy spermatophores about 10 μm in diameter and up to 2 mm long. Females store sperm in seminal receptacles on the dorsal side of fertile chaetigers and lay up to 1500 eggs into 35 capsules joined to each other in a string; each is attached by one stalk to the inner wall of the tube. Eggs are 100−103 μm in diameter, with smooth and thin envelopes, which develop into 3-chaetiger larvae inside the capsules. Hatched larvae are planktotrophic and settle and metamorphose at about 17 chaetigers. Adults inhabit silty tubes in soft sediments forming aggregations of up to 50,000 individuals per 1 m².

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000595374500001

Bibliographic citation

Radashevsky, V.I.; Al-Kandari, M. (2020). Morphology and reproductive biology of a new Pseudopolydora (Annelida: Spionidae) species from the Arabian Gulf. Mar. Biodiv. 50(6): 112. https://dx.doi.org/10.1007/s12526-020-01123-2

Topic

Marine

Is peer reviewed

true