On the morphoecology of spirorbid tubes (Polychaeta: Spirorbidae)

Rzhavsky, A. V.

doi:10.1080/00785326.1994.10429542

Cited by 20 publications

(20 citation statements)

References 7 publications

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“…However, the functional morphology of erect M. aberrans tubes attached to bivalves suggests an environment of relatively low water energy. In recent spirorbin polychaetes, homoeomorphs of microconchids, helically coiled erect growth forms have been interpreted as an adaptation to heavy sedimentation and dense gregarious settlements (Rzhavsky 1994). This could also be true for helically coiled erect tubes of microconchids (e.g., M. aberrans, Fig.…”

Section: Discussionmentioning

confidence: 97%

Shell structure of helically coiled microconchids from the Middle Triassic (Anisian) of Germany

Vinn

2010

Paläontol. Z.

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Microconchid affinity of helically coiled tubes of Microconchus aberrans (Hohenstein, 1913) from the early Anisian of southern Germany is supported by an SEM study of shell structure. There are probable pseudopunctae in the shell of M. aberrans. Helically coiled and some substrate-cemented planispiral microconchids have similar microlamellar tube structures in the Triassic. The structure of the morphologically aberrant M. aberrans is characteristic of Palaeozoic to Middle Triassic microconchids. Allochthonous tube fragments of M. aberrans in the Wellenkalk presumably originate from a microconchid biostrome. Keywords Microconchids Á Spirorbis Á Muschelkalk Á Triassic Á Skeletal microstructure Á Germany Kurzfassung Die Zugehörigkeit der schraubenförmig gewickelten Röhren von Microconchus aberrans (Hohenstein, 1913) aus dem frühen Anisium von Süddeutschland zu den Microconchiden wird durch eine SEM-Analyse der Schalenstruktur bestätigt. Die Schale von M. aberrans weist wahrscheinlich Pseudopunktae auf. In der Trias zeigen schraubenförmige und einige planispiral am Substrat zementierte Microconchiden einander ähnliche mikrolamellare Röhrenstrukturen. Die Struktur des morphologisch abweichenden M. aberrans ist typisch für Microconchiden vom Paläozoikum bis zur mittleren Trias. Allochthone Röhrenfragmente von M. aberrans im Wellenkalk stammen vermutlich aus einem Microconchiden-Biostrom. Schlü sselwörter Microconchiden Á Spirorbis Á Muschelkalk Á Trias Á Schalen-Mikrostruktur Á Deutschland

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Section: Discussionmentioning

confidence: 97%

Shell structure of helically coiled microconchids from the Middle Triassic (Anisian) of Germany

Vinn

2010

Paläontol. Z.

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“…Accordingly, lifestyle of the microconchids can be inferred from observation to modern spirorbid tubes. Specifically, the environmental factors include various substrate types, competi-tion with other pyrisite organisms and oxygen contents in water column (Rzhavsky, 1994;Tyson and Pearson, 1991;Brönnimann and Zaninetti, 1972). Specifically, the environmental factors include various substrate types, competi-tion with other pyrisite organisms and oxygen contents in water column (Rzhavsky, 1994;Tyson and Pearson, 1991;Brönnimann and Zaninetti, 1972).…”

Section: Paleoecology and Paleonenvironmen-tal Implicationsmentioning

confidence: 99%

Microconchids from microbialites near the Permian-Triassic boundary in the Zuodeng Section, Baise area, Guangxi Zhuang Autonomous Region, South China and their paleoenvironmental implications

Yang

Chen

2015

J. Earth Sci.

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Abundant microconchid worm tubes were extracted from the microbialites deposit near the Permian-Triassic boundary at the Zuodeng Section, Baise area, Guangxi Zhuang Autonomous Region, South China. These calcareous worm tubes were studied in both petrographic thin sections and isolated specimens using optical microscope and sensitive electronic microscope (SEM), respectively. They are categorized into two morphological types: helically coiled and planispirally coiled tubes, which are assignable to Microconchus aberrans (Hohenstein, 1913) and M. utahesis (Zatoń et al., 2013), respectively. The tube wall ultrastructure is characterized by laminated micrites, which distinguish the studied microconchids from comparable microgastropods or spirorbid polychaete that usually has shell ultrastructure of spar texture. The overwhelm majority of microconchids from the microbialite possess the planispirally coiled tubes. The lifestyle of extant, morphologically convergent spirorbids suggests that these planispirally coiled microconchids may have colonized in some local oxygenic oases probably produced by photosynthetic cyanobacteria in the oxygen-poor microbialite ecosystem in which they may have settled densely with high competition among various individuals and with other associated animals for oxygen consumption and food soucres. The deleterious environment condition of the microbialite ecosystem immediately after the Permian-Triassic biocrisis is also indicated by various geochemical signals derived from the same section. Such a deleterious habitat may be inhospitable for most metazoans, but it has some local oxygenic oases that was favorable for opportunistic taxa to dwell.

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“…Substrate is unknown, small shell fragments were attached to the bottom of two specimens. Based on the tube morphology (Rzhavsky 1994), the new species most likely occupies hard substrata, such as shells and stones and, probably, carapaces of large decapods.…”

Section: Ecologymentioning

confidence: 99%

“…Bergan (1953) published data on the Norwegian spirorbins, recording seven species. A new spirorbin Bushiella (Jugaria) kofiadii (Rzhavsky, 1988) widely distributed in the Arctic was previously misidentified by different authors (see Rzhavsky 1988Rzhavsky , 2001), usually as Spirorbis granulatus (Linnaeus, 1767). Holthe (1992) compiled references for identification of polychaetes from northern European and adjacent Arctic waters, vaguely referring to "about a dozen" species of serpulids.…”

Section: Introductionmentioning

confidence: 99%

“…Kupriyanova & Badyaev (1998) studied ecological correlates of distribution in the species of Kupriyanova & Jirkov (1997). Rzhavsky (2001) revised the spirorbin fauna (as family Spirorbidae) of the Arctic Ocean numbering at the time 20 species with detailed descriptions. The most recent addition to the list of Arctic serpulids was Bathyvermilia islandica Sanfilippo (2001) described from deep locations off Iceland.…”

Section: Introductionmentioning

confidence: 99%

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Two new species of serpulid polychaetes (Annelida) from the Barents Sea

Rzhavsky¹,

Kupriyanova²,

Sikorski³

2013

Fauna Norv.

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Rzhavsky AV, Kupriyanova EK and Sikorski AV. 2013. Two new species of serpulid polychaetes (Annelida) from the Barents Sea. Fauna norvegica 32: 27-38.Although Scandinavian Arctic polychaete fauna has been extensively investigated, new species are still being found in the Barents Sea. Polychaetes of the family Serpulidae are calcareous tubeworms that are most abundant at low latitudes and less common in Arctic and Antarctic waters. Because recent phylogenetic data indicate that the family Spirorbidae is a clade nested inside Serpulidae, spirorbins are treated here as subfamily Spirorbinae and their traditionally recognized subfamilies are thus lowered to the tribes Paralaeospirini, Spirorbini, Circeini, Romanchellini, Pileolariini and Januini. Here we report two new serpulid species, a filogranin Protis akvaplani sp. n. and a spirorbin Bushiella (Bushiella) barentsii sp. n. collected from off the northern Norwegian coast. Protis akvaplani differs from other species of within the genus by its tube with a high longitudinal keel, six thoracic chaetigerous segments, and short thoracic membranes ending after the 3rd segment. Generic diagnosis of the genus Protis has been emended. Bushiella (B.) barentsii differs from other species of the subgenus Bushiella by morphology of the opercular talon of operculum, incomplete fusing of primary operculum with brood chamber, and large tubes (up to 5 mm in coil diameter) with 1-2 distinct longitudinal ridges.

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On the morphoecology of spirorbid tubes (Polychaeta: Spirorbidae)

Cited by 20 publications

References 7 publications

Shell structure of helically coiled microconchids from the Middle Triassic (Anisian) of Germany

Shell structure of helically coiled microconchids from the Middle Triassic (Anisian) of Germany

Microconchids from microbialites near the Permian-Triassic boundary in the Zuodeng Section, Baise area, Guangxi Zhuang Autonomous Region, South China and their paleoenvironmental implications

Two new species of serpulid polychaetes (Annelida) from the Barents Sea

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