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| Registros recuperados: 13 | |
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| Björnberg,Tagea K. S.; Radashevsky,Vasily I.. |
| A new genus and species of parasitic copepod (Clausiidae), Spionicola mystaceus, associated with the polychaete Dipolydora armata (Spionidae) is described and figured. The new copepod has an elongate body, 5-segmented antennule, 2-segmented rami on legs 1 and 2, 2 spines representing leg 3, no leg 4, leg 5 well developed and reduced armature elements on feeding limbs. The host is a mollusk-shell borer, collected off São Sebastião Island, State of São Paulo, Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crustacea; Copepod parasite; Polychaetes; Brazil; Clausiids. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492009002000001 |
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| Denis, L; Desroy, Nicolas; Ropert, Michel. |
| A laboratory flume study was conducted to determine the effect of flow velocity on clearance rates of the Polychaeta Terebellidea Lanice conchilega (Pallas, 1966). Using sets of 75 individuals collected along the east coast of the English Channel, we measured clearance rates at five flow velocities of approximate to 4, 9, 15, 22 and 27 cm s(-1) with a culture of the diatom Chaetoceros calcitrans as food source. During each control (without polychaetes) or clearance (with Lanice conchilega) experiment, in vivo fluorescence was continuously monitored. Further HPLC analysis confirmed the sediment resuspension for the highest flow velocities tested, indicating the need for 'corrections' from control experiments. The global pattern resulted in a dome-shaped... |
| Tipo: Text |
Palavras-chave: Recirculating flume; Feeding activity; Terebellidea; Polychaetes; Clearance rate; Lanice conchilega. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3418.pdf |
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| Medernach, L; Gremare, A. |
| We compared the ability of three direct methods (increment summation, loss summation and instantaneous growth rate coefficient), the size-frequency method, and eight indirect methods (Banse and Mosher, Benke, Brey, Edgar, Morin and Bourassa, Plante and Downing, Robertson and Schwinghamer et al.) to measure or to predict the secondary production of a Mediterranean population of the polychaete Ditrupa arietina. This comparison was carried out both on the 1994 cohort during its two-year lifespan and on the entire population during the two years of the study (1994-1996). Our results showed that all three direct methods are more or less equivalent. Results referring to the year 1994-1995 showed a strong overestimation of the actual production by the size... |
| Tipo: Text |
Palavras-chave: Production secondaire; Méthodes; Polychètes; Méditerranée; Secondary production; Methods; Polychaetes; Mediterranean Sea. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00325/43614/43916.pdf |
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| Olivero,Eduardo B.; López Cabrera,María I.. |
| Miocene tidal deposits from Las Grutas, Patagonia, Argentina, superbly preserve cylindrically laminated burrow systems including Asterosoma radiciforme von Otto and three compound ichnospecies of the newly proposed ichnogenus Patagonichnus ; P. calyciformis n. isp.; P. stratiformis n. isp.; and P . thalassiformis n. isp. Together with large, palmate burrows, probably produced by crustacean decapods, they are elite trace fossils. The Patagonichnus burrow systems consist of many distinctive concentrically laminated elementary components including: horizontal and vertical, conical and helicoidal bulbs and swellings; vertical shafts; straight and paired branches; and cone-in-cone structures. Hollow, branched, straight or helicoidal inner lined tubes connect... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trace fossils; Patagonichnus; Asterosoma; Miocene; Patagonia; Ethology; Polychaetes. |
| Ano: 2005 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142005000200002 |
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| Salazar-Vallejo,Sergio I.; Rizzo,Alexandra E.; Fukuda,Marcelo V.. |
| Eupanthalis rudipalpa Amaral & Nonato, 1984 was described based on three incomplete, colorless specimens and has not been reported since its original description; the epithet rudipalpa means "hirsute palps", a characteristic that separates it from other congeneric species. Eupanthalis McIntosh, 1876 and Euarche Ehlers, 1887, and their respective type species, E. kinbergi McIntosh, 1876 and E. tubifex Ehlers, 1887, were considered synonyms (E. rudipalpa as a junior synonym of E. tubifex, a cosmopolitan species) by some authors, because both have sessile eyes and two or three antennae. Nonetheless, these two genera are, in fact, distinct. Their type species can clearly be separated using some prostomial features. We provide an emended diagnosis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acoetids; Color pattern; Eupanthalis; Key to species; Polychaetes. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000300008 |
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| Chevaldonne, Pierre; Jollivet, Didier; Desbruyeres, Daniel; Lutz, Richard; Vrijenhoek, Robert. |
| Introduction : The evolutionary age of some of the hydrothermal vent taxa have recently become a highly debated issue. Vestimentiferan worms (= siboglinid polychaetes) in particular, have been claimed to be as old as 430 million years based on the occurrence of fossilized tubes resembling those of currently known Vestimentifera (Little et al., 1997), while other authors, based on molecular data, have claimed they must be younger than 100 million years old (Black et al, 1997; Halanych et al., 1998). One explanation for this apparent discrepancy might be that tubes, such as those found in the Silurian fossil vent communities, did not belong to vestimentiferans, but rather to other tube-dwelling polychaetes. However, it is also possible that the choice of the... |
| Tipo: Text |
Palavras-chave: Allopatric speciation; Polychaetes; Polychaetes; Hydrothermal vent. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-895.pdf |
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| Foveau, Aurelie; Dauvin, Jean-claude. |
| Our study concerns the sampling of patches of mobile gravel and pebbles at 14 stations (25 to 66 m water depth) in an area of hard bottom located in the ‘Raz Blanchard’ (between Cap de La Hague in France and Alderney in the Channel Islands, UK). The samples collected from these benthic habitats with scattered fauna were sieved on 1-mm mesh and subjected to meticulous sorting, revealing the presence of a highly diversified mobile fauna. The epifauna and vagile macrofauna (>1 mm) account for 140 taxa (120 species, 17 genera and three other levels of identification). Amphipods and polychaetes dominate the taxonomic richness, while crustaceans represent 75% of the fauna. Among these taxa, two species are new for the English Channel marine fauna. Biological... |
| Tipo: Text |
Palavras-chave: Amphipods; Polychaetes; Taxonomic richness; Hard bottom; High-energy environments. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00397/50828/51591.pdf |
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| Лосовская, Г. В.; Синегуб, И. А.; Рыбалко, А. А.. |
| На большом фактическом материале (222 пробы обрастания, 123 пробы бентоса), собранном в 2001 г., изучены видовой состав, количественное развитие полихет и их экологическая структура в акватории Одесского порта. Зарегистрировано 19 видов полихет (17 видов в бентосе и 9 – в обрастании гидротехнических сооружений). Наиболее массовыми видами были Neanthes succinea, Polydora limicola и Heteromastus filiformis. Среди основных жизненных форм в обрастании и в бентосе доминировали интра-эпибионты. В обрастании преобладали полифаги, в бентосе – полифаги и детритофаги. Средние численность и биомасса полихет в обрастании были выше, чем в бентосе; на ракуше выше, чем на илах. На участке с относительно свободным водообменом средняя численность была в 4, а средняя... |
| Tipo: Journal Contribution |
Palavras-chave: Полихеты; Обрастание; Бентос; Численность; Биомасса; Одесский порт; Polychaetes; Fouling; Benthos; Abundance; Biomass; Odessa port Biomass Fouling Benthos Abundance Benthos Biomass Fouling http://aims.fao.org/aos/agrovoc/c_878 http://aims.fao.org/aos/agrovoc/c_926 http://aims.fao.org/aos/agrovoc/c_25400. |
| Ano: 2004 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/68 |
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| Registros recuperados: 13 | |
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