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Registros recuperados: 7
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Annelid assemblages in soft bottoms subjected to human impact in the Urias estuary (Sinaloa, Mexico) ArchiMer
Mendez, N.
The annelid fauna inhabiting soft bottoms was analysed during February and April, 1997 in the Urfas estuary which is mostly surrounded by mangrove swamps, but is also subjected to the effect of several anthropogenic activities, Classification and ordination techniques were used to perform the characterisation of the system based on the annelid assemblages according to environmental variables (mainly organic matter content and percentage of mud). Three zones were found: (1) 'very polluted zone', in front of a slaughterhouse and a fish processing factory with a total lack of macrofauna due to the strong enrichment of the sediment in organic matters (2) 'polluted zones', characterised by the sporadic presence of oligochaetes in front of a domestic sewage...
Tipo: Text Palavras-chave: Annélides; Fonds meubles; L'estuaire d'Urías; Écosystème perturbé; Espèces indicatrices; Annelids; Soft bottoms; Urias estuary; Ecosystem disturbances; Indicator species.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00322/43315/42939.pdf
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Autécologie et éthologie de l' Annélide Polychète Polydora ciliata (Johnston, 1928). Synthèse bibliographique ArchiMer
Cheramy, Julien; Lefebvre, Alain.
The annelid polychaete Polydora ciliata (Johnston, 1828) regulary colonizes the shores of Picardie (France), covering the musse! band of mud and causing their death by asphyxia. This report is a preliminary study which aim is to settle a program of supervision and prevention against this colonization. This report is a bibliographie review about the bentho-pelagic !ife cycle of Polydora ciliata.
Tipo: Text Palavras-chave: Annélide; Polydora ciliata; Moules; Picardie; Cycle bentho-pélagique; Annelids; Polydora ciliata; Mussels; Picardie; Review; Bentho-pelagic life cycle.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00439/55046/56482.pdf
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CAULLERIELLA PETERSENAE N. SP. AND TWO NEW RECORDS OF CIRRATULIDAE (ANNELIDA: POLYCHAETA) FROM VENEZUELA Boletín de Investigaciones
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: Journal 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
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Phenological synchrony between the austral thrush Turdus falcklandii (Passeriformes: Turdidae) and its food resources within forests and prairies in southern Chile RChHN
Orellana,José I; Smith-Ramírez,Cecilia; Rau,Jaime R; Sade,Soraya; Gantz,Alberto; Valdivia,Carlos E.
BACKGROUND: Frugivorous birds are phenologically linked to the fruits that they eat. When there is less fruit in seasonal environments, frugivorous birds complement their diet by eating invertebrates. The depth of the phenological link between frugivorous birds and their dietary resources has not been studied until now. The objective was to determine the possible phenological synchrony between the Austral thrush (Turdus falcklandii) and its dietary resource, fruits and annelids, found in the fragmented forests in the South of Chile. RESULTS: The numbers of thrushes, annelids, and fruits in fragments of native forest and anthropogenic grassland in Chile's Lake District were estimated annually. Spatial variation (i.e., forest and grassland) and seasonal...
Tipo: Journal article Palavras-chave: Annelids; Fleshy fruit; Phenology; Seasonality; Turdus.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100010
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STRUCTURE OF A POLYCHAETE COMMUNITY IN A MANGROVE IN THE NORTHERN COAST OF BRAZIL Acta biol.Colomb.
TAVARES CUTRIM,Allana Stéphanie; SANTOS SOUSA,Lorena Karine; PASSOS RIBEIRO,Rannyele; DE OLIVEIRA,Verônica Maria; SILVA DE ALMEIDA,Zafira da.
ABSTRACT Polychaetes play an important role in the structure and functioning of benthic communities in mangroves; however, knowledge about these organisms in the Maranhão Amazon coast is scarcity. This study analyzed the ecological aspects of polychaete community in the Quebra Pote mangrove in Maranhão State. Four sampling campaigns were carried out during both rainy and dry periods between November 2013 and July 2014, using 100 meters long transects set perpendicular to the waterline at three zones 50 m between them. A total of 521 organisms were identified belonging to ten families and 15 species; Nephtys simoni, Notomastus sp., and Paraonis sp. represented 58.92 % of all samples. Mobile deposit-feeders polychaetes were dominant and abundant. The Quebra...
Tipo: Journal article Palavras-chave: Annelids; Diversity; Estuaries; Soft bottoms; Variation.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000300286
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Thermal biology of the deep-sea vent annelied Paralvinella grasslei: in vivo studies ArchiMer
Cottin, D; Ravaux, J; Leger, N; Halary, S; Toullec, J; Sarradin, Pierre-marie; Gaill, F; Shillito, B.
The annelid Paralvinella grasslei is a deep-sea vent endemic species that colonizes the wall of active chimneys. We report here the first data on its thermal biology based on in vivo experiments in pressurized aquaria. Our results demonstrate that P. grasslei survives a 30 min exposure at 30 degrees C, and suggest that the upper thermal limit of this species is slightly above this temperature. The first signs of stress were noticed at 30 C, such as a significant increase in the animal's activity and the expression of HSP70 stress proteins. A preliminary investigation of the kinetics of stress protein expression surprisingly showed high levels of HSP70 proteins as late as 3.5 h after the heat shock. Finally, we provide here the first sequences for vent...
Tipo: Text Palavras-chave: IPOCAMP; Annelids; Heat stress; Stress response; Heat shock proteins; Hydrothermal vents.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4570.pdf
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Worms’ Antimicrobial Peptides ArchiMer
Bruno, Renato; Maresca, Marc; Canaan, Stéphane; Cavalier, Jean-françois; Mabrouk, Kamel; Boidin-wichlacz, Céline; Olleik, Hamza; Zeppilli, Daniela; Brodin, Priscille; Massol, François; Jollivet, Didier; Jung, Sasha; Tasiemski, Aurélie.
Antimicrobial peptides (AMPs) are natural antibiotics produced by all living organisms. In metazoans, they act as host defense factors by eliminating microbial pathogens. But they also help to select the colonizing bacterial symbionts while coping with specific environmental challenges. Although many AMPs share common structural characteristics, for example having an overall size between 10–100 amino acids, a net positive charge, a γ-core motif, or a high content of cysteines, they greatly differ in coding sequences as a consequence of multiple parallel evolution in the face of pathogens. The majority of AMPs is specific of certain taxa or even typifying species. This is especially the case of annelids (ringed worms). Even in regions with extreme...
Tipo: Text Palavras-chave: Antibiotics; Annelids; Nematodes; AMP; Extremophiles.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00511/62307/66556.pdf
Registros recuperados: 7
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