Latest Articles from ZooKeys Latest 5 Articles from ZooKeys https://zookeys.pensoft.net/ Fri, 29 Mar 2024 09:17:41 +0200 Pensoft FeedCreator https://zookeys.pensoft.net/i/logo.jpg Latest Articles from ZooKeys https://zookeys.pensoft.net/ A new species of the genus Lindaspio Blake & Maciolek, 1992 (Annelida, Spionidae) from a cold seep near Hainan Island, China https://zookeys.pensoft.net/article/101406/ ZooKeys 1153: 105-112

DOI: 10.3897/zookeys.1153.101406

Authors: Jixing Sui, Dong Dong, Xuwen Wu, Xinzheng Li

Abstract: A new species of the spionid genus Lindaspio Blake & Maciolek, 1992 was collected from a cold seep near the Hainan Island at a depth of 1758 m. Morphologically, Lindaspio polybranchiata sp. nov. differs from the congeners in having a narrow, folded caruncle and more neuropodial branchiae (from chaetiger 20). The 18S, COI, and 16S sequences of the new species have been submitted to GenBank. It is the first record of the genus Lindaspio from Chinese waters. A key to all species of Lindaspio is given.

HTML

XML

PDF

]]>
Research Article Thu, 16 Mar 2023 09:53:47 +0200
Rhynchospio aciliata sp. nov., a new spionid species (Annelida, Spionidae) from the Korea Strait https://zookeys.pensoft.net/article/80077/ ZooKeys 1100: 191-205

DOI: 10.3897/zookeys.1100.80077

Authors: Geon Hyeok Lee, Gi-Sik Min

Abstract: A new spionid polychaete, Rhynchospio aciliata sp. nov., was discovered in the fine sandy sediments of an intertidal habitat from Korean waters. The new species is considered a simultaneous hermaphrodite, but no brooding embryos were found in any of the specimens collected in this study. This species is unique in the absence of ciliation in the anteriormost chaetigers. Rhynchospio aciliata sp. nov. is morphologically most similar to Rhynchospio foliosa Imajima, 1991 from Japan in having an elevation on the prostomium, conspicuously large and foliaceous branchiae, and intersegmental lateral pouches. However, the new species differs from the latter by the following characteristics: (1) large and lanceolate notopodial postchaetal lamellae of chaetiger 1, (2) transverse ciliated bands and ciliation on the inner branchiae absent in anteriormost chaetigers, and (3) pygidium with one pair of ventral cirri and numerous elongated dorsolateral cirri. Detailed description and illustrations of the new species are provided with molecular information on mitochondrial cytochrome c oxidase subunit I (COI), 16S ribosomal DNA (rDNA), nuclear 18S rDNA, and 28S rDNA.

HTML

XML

PDF

]]>
Research Article Mon, 16 May 2022 13:06:44 +0300
New species of the genus Spio (Annelida, Spionidae) from the southern and western coasts of Korea https://zookeys.pensoft.net/article/73847/ ZooKeys 1070: 151-164

DOI: 10.3897/zookeys.1070.73847

Authors: Geon Hyeok Lee, Karin Meißner, Seong Myeong Yoon, Gi-Sik Min

Abstract: A new spionid polychaete, Spio pigmentata sp. nov., is described from the southern and western coasts of Korea. This new species differs from its congeners by the combination of the following morphological characteristics: the presence of orange-brown pigmentation on the anterior part of the prostomium, black pigmentation on the peristomium and along the body, U-shaped nuchal organs, a comparatively long extension of metameric dorsal ciliated organs, three pairs of white dots per chaetiger, two to three posterior abranchiate chaetigers, and the presence of tridentate neuropodial hooded hooks. The partial 16S ribosomal DNA (rDNA) and nuclear 18S rDNA sequences of the new species and Spio sp. 2 reported by Abe and Sato-Okoshi (2021) from Japan showed high similarity, indicating that these two specimens belong to the same species. A detailed description and illustrations of the new species, together with molecular information, are provided.

HTML

XML

PDF

]]>
Research Article Mon, 15 Nov 2021 16:39:10 +0200
Molecular identification and larval morphology of spionid polychaetes (Annelida, Spionidae) from northeastern Japan https://zookeys.pensoft.net/article/54387/ ZooKeys 1015: 1-86

DOI: 10.3897/zookeys.1015.54387

Authors: Hirokazu Abe, Waka Sato‐Okoshi

Abstract: Planktonic larvae of spionid polychaetes are among the most common and abundant group in coastal meroplankton worldwide. The present study reports the morphology of spionid larvae collected mainly from coastal waters of northeastern Japan that were identified by the comparison of adult and larval 18S and 16S rRNA gene sequences. The molecular analysis effectively discriminated the species. Adult sequences of 48 species from 14 genera (Aonides Claparède, 1864; Boccardia Carazzi, 1893; Boccardiella Blake & Kudenov, 1978; Dipolydora Verrill, 1881; Laonice Malmgren, 1867; Malacoceros Quatrefages, 1843; Paraprionospio Caullery, 1914; Polydora Bosc, 1802; Prionospio Malmgren, 1867; Pseudopolydora Czerniavsky, 1881; Rhynchospio Hartman, 1936; Scolelepis Blainville, 1828; Spio Fabricius, 1785; Spiophanes Grube, 1860) and larval sequences of 41 species from 14 genera (Aonides; Boccardia; Boccardiella; Dipolydora; Laonice; Paraprionospio; Poecilochaetus Claparède in Ehlers, 1875; Polydora; Prionospio; Pseudopolydora; Rhynchospio; Scolelepis; Spio; Spiophanes) of spionid polychaetes were obtained; sequences of 27 of these species matched between adults and larvae. Morphology of the larvae was generally species‐specific, and larvae from the same genus mostly shared morphological features, with some exceptions. Color and number of eyes, overall body shape, and type and arrangement of pigmentation are the most obvious differences between genera or species. The morphological information on spionid larvae provided in this study contributes to species or genus level larval identification of this taxon in the studied area. Identification keys to genera and species of planktonic spionid larvae in northeastern Japan are provided. The preliminary results of the molecular phylogeny of the family Spionidae using 18S and 16S rRNA gene regions are also provided.

HTML

XML

PDF

]]>
Research Article Thu, 4 Feb 2021 17:27:42 +0200
Prionospio from the coast of the Iberian Peninsula, with the description of two new species (Annelida, Spionidae) https://zookeys.pensoft.net/article/26910/ ZooKeys 810: 1-18

DOI: 10.3897/zookeys.810.26910

Authors: Víctor Hugo Delgado-Blas, Óscar Díaz-Díaz, José M. Viéitez

Abstract: Five species of Prionospio Malmgren, 1867, each with four pairs of branchiae, are studied from coast of the Iberian Peninsula. Two of these species, Prionospio cristaventralis sp. n. and P. parapari sp. n., are new to science, whereas P. caspersi Laubier, 1962, P. fallax Söderström, 1920, and P. ehlersi Fauvel, 1928 have been previously recorded. Prionospio cristaventralis sp. n. is characterized by having ventral crests present on chaetigers XI–XIX, dorsal crests and low crests on chaetigers X–XXXIV, triangular neuropodial postchaetal lamellae with pointed ventral edges on chaetiger II, oval neuropodial lamellae on chaetiger III, digitiform pinnules on the posterior face of the first and fourth pairs, and branchial pairs II and III are triangular. Prionospio parapari sp. n. is characterized by having rounded neuropodial postchaetal lamellae on chaetiger I, digitiform pinnules on the posterior face of the first and fourth pairs, branchial pairs II and III are cirriform, low dorsal crests on chaetigers VIII–IX, and oval neuropodial lamellae with enlarged dorsal edges on chaetiger III. A key is given to all Prionospio species with four pairs of branchiae known from the Iberian Peninsula coastline.

HTML

XML

PDF

]]>
Research Article Thu, 20 Dec 2018 15:33:35 +0200