Consulta: subjectFacets:"Polychaetes"
Registros recuperados: 13
Data/hora: 10/06/2024 13:36:03

Сравнение видового состава и количественного развития полихет обрастания и бентоса на примере Одесского порта
Provedor de dados: 13
Autores: 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

Experimental study of filtration activity in Ditrupa arietina (Annelida Polychaeta) using an automated image analysis system
Provedor de dados: 5
Autores: Duchene, Jean Claude; Jordana, Esther; Charles, François; Gremare, Antoine; Amouroux, Jean Michel.
An automated image analysis system designed to assess the activity of benthic organisms is described. This system is used to study filtration in the serpulid polychaete Ditrupa arietina. The video sensor of the system is composed of a black and white charged coupled device, a microprocessor, a memory and an interface board. It is driven by real-time routines, which are downloaded in permanent memory prior to each experiment. These routines control picture acquisition frequency and compute the differences in grey levels between the image recorded at a given time and a reference image (corresponding to no filtration in the case of D. arietina). These differences are used to detect numerical objects, which are stored in the memory board. At the end of each...
Tipo: Text
Palavras-chave: Polychètes; Analyse d'images; Activité; Filtration; Polychaetes; Image analysis; Activity; Filtration.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00323/43377/42834.pdf

Comparaison de méthodes d'évaluation de la production secondaire d'une population de l'annélide polychète Ditrupa arietina (O.F. Muller)
Provedor de dados: 5
Autores: 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

The Terebelliformia-Recent Developments and Future Directions
Provedor de dados: 5
Autores: Hutchings, Pat; Carrerette, Orlemir; Nogueira, João M. M.; Hourdez, Stephane; Lavesque, Nicolas.
Terebelliformia comprises a large group of sedentary polychaetes which live from the intertidal to the deep sea. The majority live in tubes and are selective deposit feeders. This study synthesises the current knowledge of this group, including their distribution, in the different biogeographic regions. We highlight the new methodologies being used to describe them and the resolution of species complexes occurring in the group. The main aim of this review is to highlight the knowledge gaps and to stimulate research in those directions, which will allow for knowledge of their distribution and abundances to be used by ecologists and managers.
Tipo: Text
Palavras-chave: Annelida; Polychaetes; Biodiversity assessment; Geographical distribution; Methods; Knowledge gaps.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00678/79018/81417.pdf

Sister-species of eastern Pacific hydrothermal vent worms (Ampharetidae, Alvinellidae, Vestimentifera) provide new mitochondrial COI clock calibration
Provedor de dados: 5
Autores: 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

Ambient flow velocity and resulting clearance rates of the terebellid polychaete Lanice conchilega (Pallas, 1766)
Provedor de dados: 5
Autores: 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

Surprisingly diversified macrofauna in mobile gravels and pebbles from high-energy hydrodynamic environment of the ‘Raz Blanchard’ (English Channel)
Provedor de dados: 5
Autores: 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 (&gt;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

A new genus and a new species of Clausiidae (Crustacea, Copepoda) parasitic on Dipolydora armata (Polychaeta, Spionidae) in Brazil
Provedor de dados: 84
Autores: 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

Reinstatement of Euarche rudipalpa (Polychaeta: Acoetidae), with remarks on morphology and body pigmentation
Provedor de dados: 103
Autores: Salazar-Vallejo,Sergio I.; Rizzo,Alexandra E.; Fukuda,Marcelo V.
Eupanthalis rudipalpa Amaral &amp;amp; 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

Polychaetes from a southwestern shallow shelf Atlantic area (Argentina, 38 S) affected by sewage discharge
Provedor de dados: 97
Autores: ELÍAS,RODOLFO; BREMEC,CLAUDIA S; VALLARINO,EDUARDO A.
A benthos-sampling program was carried out in the coastal area of Mar del Plata city in order to know the composition and distribution of infaunal polychaetes living on a subtidal soft-bottom substrate affected by the sewage discharge. Sandy bottoms showed heterogeneous sediment composition and very low organic matter content. Thirty three polychaete species were identified in a range depth between 6.5 to 12.5 m. A comparison with data from 30 years ago from adjacent areas deeper than 12 m is herein presented. Polychaete distribution was related both to the type of sediment and to the content of organic matter. Owenia fusiformis Delle Chiaje was dominant and peaked at stations near the sewage effluent. Small-sized polychaetes were abundant in the sampling...
Tipo: Journal article
Palavras-chave: Polychaetes; Domestic outfall; Sandy subtidal bottoms; South Atlantic.
Ano: 2001
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000300003

Patagonichnus: a new trace fossil from the Miocene of Patagonia. A probable fodinichnion of gregarious polychaetes
Provedor de dados: 41
Autores: 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

CAULLERIELLA PETERSENAE N. SP. AND TWO NEW RECORDS OF CIRRATULIDAE (ANNELIDA: POLYCHAETA) FROM VENEZUELA
Provedor de dados: 50
Autores: Díaz-Díaz,Oscar; Cárdenas-Oliva,Adibe; Liñero-Arana,Ildefonso.
A total of 295 specimens of cirratulids were collected at five localities from the northeastern coast of Venezuela. Caulleriella petersenae is described as a species new to science, which is characterized by the absence of eyes and the presence of the first notopodial hooks at the chaetiger 26. On the other hand, Monticellina cf. serratiseta and Timarete caribous were recorded for the first time from Venezuela waters. All these species have been found associated to macro-algae and coral reef.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polychaetes; Annelids; Biodiversity; Cirratulids; Great Caribbean region.
Ano: 2014
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612014000200006

SPATIAL AND TEMPORAL CHARACTERIZATION OF SOFT BOTTOM POLYCHAETES IN A SHALLOW TROPICAL BAY (COLOMBIAN CARIBBEAN)
Provedor de dados: 50
Autores: Guzmán-Alvis,Angela I.; Lattig,Patricia; Ruiz,José A.
The spatial and temporal variations of the polychaete assemblages were studied within and off a shallow (10-25 m) tropical bay (Bahía de Portete). The polychaete abundances at family level and their trophic mechanisms were used for this purpose. Sediment samples were collected at six stations in this bay during the wet and dry seasons. Multivariate analysis indicated that off- Bay polychaete assemblages were different from the bay ones; this spatial variation was related to sedimentary characteristics, depth and turbid-water conditions. On the other hand, these assemblages did not show significant differences between the dry and wet seasons. The differences between these two assemblages were given specially by the Syllidae, Gonidadidae, Nephtyidae,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropic; Polychaetes; Trophic groups; Taxonomic structure; Bahía de Portete.
Ano: 2006
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612006000100002