Academic literature on the topic 'Peristomium'

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Journal articles on the topic "Peristomium"

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DEAN, HARLAN K., and JAMES A. BLAKE. "Monticellina (Polychaeta: Cirratulidae) from the Pacific coast of Costa Rica with descriptions of six new species." Zoosymposia 2, no. 1 (2009): 105–26. http://dx.doi.org/10.11646/zoosymposia.2.1.10.

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Eight species of Monticellina are described from intertidal and subtidal sites on the Pacific coast of Costa Rica. Six of these species, M. acunai sp. nov., M. antelaxa sp. nov., M. carrikeri sp. nov., M. elongata sp. nov., M. giribeti sp. nov., and M. setosa sp. nov. are new to science while M. cryptica Blake, 1996 and M. tesselata (Hartman, 1960) have been previously described from California. M. acunai sp. nov. has a wide prostomium, a peristomium with four annulations and denticulate capillary setae with numerous well-developed teeth in both the notopodium and neuropodium. M. antelaxa sp.
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Fukuda, Marcelo V., Gustavo Yunda-Guarin, and João M. M. Nogueira. "The genusProsphaerosyllis(Polychaeta: Syllidae: Exogoninae) in Brazil, with description of a new species." Journal of the Marine Biological Association of the United Kingdom 89, no. 7 (2009): 1443–54. http://dx.doi.org/10.1017/s0025315409000095.

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In studies carried out off the north-eastern and south-eastern coast of Brazil, three species ofProsphaerosylliswere found:P. isabellae, which was already recorded for Brazilian waters;P. xarifae, a newly recorded species for the area; and P.brachycephalasp. nov., a new to science species.Prosphaerosyllis brachycephalasp. nov., is characterized by having swollen anterior part of the body, prostomium retractable within the peristomium and anterior segments, short antennae, short peristomial and dorsal cirri, and falcigers with short, unidentate blades throughout. All these species are herein de
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CHOI, HYUN KI, TAE WON JUNG, and SEONG MYEONG YOON. "Two new species of Aphelochaeta (Annelida: Polychaeta: Cirratulidae) from Korean waters." Zootaxa 4504, no. 4 (2018): 586. http://dx.doi.org/10.11646/zootaxa.4504.4.9.

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Two new cirratulid polychaetes of the genus Aphelochaeta collected from Korean waters are reported here along with detailed descriptions and illustrations. Aphelochaeta petila n. sp. is readily distinguished from its congeners by the following characteristics: non-expanded anterior and posterior ends of the body; non-moniliform segments in the abdomen; peristomium with three annulations and an indistinct dorsal crest; both the dorsal tentacles and the first branchiae attached on the peristomium; presence of only a pair of branchiae on chaetiger 1; and the ventrum of the thoracic region with tr
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DONER, STACY A., and JAMES A. BLAKE. "Two new species of Aphelochaeta (Polychaeta: Cirratulidae) from deep water off northern California." Zoosymposia 2, no. 1 (2009): 127–37. http://dx.doi.org/10.11646/zoosymposia.2.1.11.

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Two new species belonging to the genus Aphelochaeta (Polychaeta: Cirratulidae) are described from continental slope sediments off northern California. Specimens were collected during extensive monitoring of the San Francisco Deep Ocean Disposal Site off the Farallon Islands from 1996 to 2004. The genus Aphelochaeta is one of the more speciose genera collected from depths of 2400–3200 m. A. bullata sp. nov. is characterized by the presence of four peristomial annulations, a pronounced dorsal crest, and elongated, natatory-like simple capillaries in the noto- and neuropodia of the thoracic regio
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ÁLVAREZ-CAMPOS, PATRICIA, GUILLERMO SAN MARTÍN, and M. TERESA AGUADO. "The genus Branchiosyllis Ehlers, 1887 from Philippines Islands, with the description of two new species." Zootaxa 3542, no. 1 (2012): 49. http://dx.doi.org/10.11646/zootaxa.3542.1.2.

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The species of Branchiosyllis from Philippines Islands, B. maculata, B. australis new comb. and B. exilis, have been re-viewed, with particular emphasis on the study of worldwide material of the latter. In addition, Branchiosyllis mayae andBranchiosyllis tagalog are described as new species. The former is characterized by its bidentate claw-shaped chaetae,unique in the genus, short dorsal cirri, and orange body with black stripes on prostomium (less pigmented), peristomiun,and anterior four to seven segments (more pigmented at bases of cirrophores). The latter is characterized by presence ofon
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Gagaev, S. Yu. "A new species the genus Chaetozone (Annelida: Cirratulidae) from the seaward part of Chaunskaya Bay in the East Siberian Sea (Russia)." Zoosystematica Rossica 33, no. 2 (2024): 237–43. http://dx.doi.org/10.31610/zsr/2024.33.2.237.

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Based on material collected by the author over several years and seasons in Chaunskaya Bay of the East Siberian Sea, a new species, Chaetozone buzhinskajae sp. nov., is described. Morphologically, it is most similar to Ch. setosa Malmgren, 1867 and Ch. pugettensis Blake, 2015, which belong to a group of species characterised by an enlarged lobe or crest covering the peristomium. The new species is distinguished by the presence of neuropodial spines in the anterior part of the last third of the body (from the 48th to the 72nd setigerous segment), a complete achaetous segment that is well separa
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Gagaev, Sergey Yu. "A new species the genus Chaetozone (Annelida: Cirratulidae) from the seaward part of Chaunskaya Bay in the East Siberian Sea (Russia)." Zoosystematica Rossica 33, no. 2 (2024): 237–43. https://doi.org/10.31610/zsr/2024.33.2.237.

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Based on material collected by the author over several years and seasons in Chaunskaya Bay of the East Siberian Sea, a new species,&nbsp;<em>Chaetozone buzhinskajae</em>&nbsp;<strong>sp. nov.</strong>, is described. Morphologically, it is most similar to&nbsp;<em>Ch. setosa</em>&nbsp;Malmgren, 1867 and&nbsp;<em>Ch. pugettensis</em> Blake, 2015, which belong to a group of species characterised by an enlarged lobe or crest covering the peristomium. The new species is distinguished by the presence of neuropodial spines in the anterior part of the last third of the body (from the 48th to the 72nd
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Brinkhurst, R. O., and D. McKey-Fender. "The anatomy of the pharynx of two predatory aquatic oligochaetes." Canadian Journal of Zoology 69, no. 3 (1991): 669–75. http://dx.doi.org/10.1139/z91-098.

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The genera Haplotaxis (Haplotaxidae) and Phagodrilus (Lumbriculidae) have convergent modifications of the pharynx that are adaptations for ingesting prey, especially other oligochaetes. Neither these taxa nor the predatory lumbriculid Agriodrilus (which is not closely related to Phagodrilus within that family) need be considered to be directly related to the leeches or branchiobdellidans simply because of these modifications. The commensal and predatory life style has evolved quite independently in several oligochaetes. Haplotaxis does not have a furrow across the prostomium as previously desc
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Elías, Rodolfo, and María S. Rivero. "Two new species of Caulleriella (Polychaeta, Cirratulidae) from Argentina." Iheringia. Série Zoologia 98, no. 2 (2008): 225–30. http://dx.doi.org/10.1590/s0073-47212008000200010.

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Caulleriella bremecae and C. galeanoi (Polychaeta: Cirratulidae) are newly described from Mar del Plata, Argentina (38ºS, 57ºW). Both species have small, red-pigmented nuchal organs (lateral "eyes") on the prostomium. Caulleriella bremecae sp. nov. is further characterized by a peristomium without annulations except for a narrow anterior dorsal fold, posterior part of peristomium extending posterodorsally over chaetiger 1, latter extending posterodorsally over chaetiger 2 and with slightly separated grooved palps arising middorsally; notochaetae of chaetigers 1-23 all smooth capillaries, there
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Elias, R., M. S. Rivero, and J. M. Lobo Orensanz. "New species ofMonticellinaandChaetozone(Polychaeta: Cirratulidae) in the SW Atlantic, and a review ofMonticellinaspecies." Journal of the Marine Biological Association of the United Kingdom 97, no. 7 (2016): 1553–63. http://dx.doi.org/10.1017/s0025315416000771.

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During quantitative surveys two new species of Cirratulidae from subtidal bottoms of the Atlantic coast of Argentina were collected. They belong to the generaMonticellinaandChaetozone. Monticellina moraesp. nov. is characterized by the presence of a long peristomium of smooth appearance, but triannulated at SEM, bearing the dorsal tentacles in the posterior part, with the first pair of branchiae posterolateral to the dorsal tentacles in chaetiger 1. The body is divided into three parts, an anterior region laterally expanded and with crowded segments, a middle region with beadlike chaetigers an
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Dissertations / Theses on the topic "Peristomium"

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Tricarico, S. "BIOLOGY OF THE DYNAMIC CONNECTIVE TISSUE (MCTS) IN INVERTEBRATE MARINE MODELS:AN INTEGRATED APPROACH." Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/215687.

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Animal tissues are an immense source of inspiration for humans which actually mimic (biomimetic approach) and use them for novel material design and production. Connective tissue is the most important animal structural material and it (or its components) is often used as source of inspiration/model for different applications. Its main extracellular matrix (ECM) component is collagen. Currently, industrially available collagen is mainly of bovine origin that, however, carries a risk of transmission of serious diseases (bovine spongiform encephalopathy, BSE, and transmissible spongiform en
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Book chapters on the topic "Peristomium"

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"peristomium, n." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/5847642672.

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"peristomial, adj." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/5033732785.

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Nelson-Smith, A., P. Knight-Jones,, and E. W. Knight-Jones. "Annelida." In The Marine Fauna of the British Isles and North-West Europe. Oxford University PressOxford, 1990. http://dx.doi.org/10.1093/oso/9780198573562.003.0006.

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Abstract The annelids or ‘true’ worms form a major animal group, typically of elongated cylindrical shape and mostly ranging in length from 10mm to 150mm (although some are microscopic and a few exceed I m); the body is characteristically made up of a series of ring-like segments, indicated externally by annular constrictions. The relatively simple gut normally passes down the body from an anterior subterminal mouth to a posterior terminal anus. The first segment (prostomium) (Fig. 6.1) is situated above and in front of the mouth, the second (buccal segment or peristomium) surrounds it and the
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Carnevali, M. D. Candia, F. Bonasoro, F. Andrietti, G. Melone, and I. C. Wilkie. "Functional morphology of the peristomial membrane of regular sea-urchins: structural organization and mechanical properties in Paracentrotus lividus." In Echinoderm Research. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078951-36.

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