نتایج جستجو برای: invasive polychaetes

تعداد نتایج: 144582  

Journal: :international journal of environmental research 2015
m.m. dorgham r. hamdy

the alien polychaetes are widely distributed in the whole mediterranean sea as well as in theegyptian waters. the objective of this study is to highlight the distribution and abundance of the alienpolychaetes along the alexandria coast, their contribution to the total polychaete community and the changesthey caused in the community structure. through monthly sampling polychaetes were collected ...

2016
Elena Kupriyanova Pat Hutchings Eunice Wong Catherine de Rivera

Introduction of non-native species threatens local marine biodiversity, generating substantial costs for the aquaculture and tourism industries when native (including commercial) species are displaced. It is important that non-indigenous species are identified and controlled before they establish locally becoming invasive pests. The important vectors contributing to human-related dispersal of m...

ژورنال: بوم شناسی آبزیان 2016
Amrollahi Biuki, Narges, Kamrani, Ehsan, Razaghi, Marzieh, Safari Shahvari, Najme ,

In this study we examined the tubes of building polychaetes erpulidae family of Bandar Abbas coast. Sampling was done using hammer and Knife from the fisheries wharf body and tidal conditions were maximized. Polychaetes collected samples were placed in plastic bags and transported to the laboratory. Polychaetes samples with valid identification keys were identified. The relationship between mea...

2011
Cristian B. Canales-Aguirre Cristián E. Hernández

The aim of this study was to evaluate the utility of COI, of the mitochondrial DNA, for the taxonomic determination of soft-bottom benthic polychaetes in the Chiloé Inner Sea as a particularly important zone for polychaete fauna of the southeast Pacific. The results show high genetic differentiation between morphological species of polychaetes (posterior probabilities upper 0.9), and Onuphis ps...

ژورنال: بوم شناسی آبزیان 2015
Askari Nasab, Mona , Attaran Fariman, Gilan , Shakori, Arash ,

Polychaete worms with high species richness and diversity play a key role in the water food chain. In this research polychates of the intertidal zone of Tis coast in Chabahar bay were studied. Sampling was conducted over a period of one year, from summer to winter 2013 and during four seasons by 50 cm×50 cm quadrats. Twenty two families and 30 genera and 4 species were identified polychaetes.Th...

1999
SARA M. LINDSAY

Nervous system and sensory structure morphologies provide useful information for reconstructing phylogenetic relationships among the Polychaeta, Annelida, and Arthropoda. With the more common use of indirect immunocytochemistry and laser scanning confocal microscopy methods, the detailed information available from morphological studies has increased. Despite this wealth of information, developi...

2013
David M. Malakauskas Sarah J. Willson Margaret A. Wilzbach Nicholas A. Som

We quantified microscale flow forces and their ability to entrain the freshwater polychaete, Manayunkia speciosa, the intermediate host for 2 myxozoan parasites (Ceratomyxa shasta and Parvicapsula minibicornis) that cause substantial mortalities in salmonid fishes in the Pacific Northwest. In a laboratory flume, we measured the shear stress associated with 2 mean flow velocities and 3 substrate...

Journal: :Proceedings. Biological sciences 2009
Erik A Sperling Jakob Vinther Vanessa N Moy Benjamin M Wheeler Marie Sémon Derek E G Briggs Kevin J Peterson

Both the monophyly and inter-relationships of the major annelid groups have remained uncertain, despite intensive research on both morphology and molecular sequences. Morphological cladistic analyses indicate that Annelida is monophyletic and consists of two monophyletic groups, the clitellates and polychaetes, whereas molecular phylogenetic analyses suggest that polychaetes are paraphyletic an...

Journal: :Integrative and comparative biology 2011
Rochelle D Seitz Kathleen E Knick Miranda Westphal

Shallow coves in Chesapeake Bay have abundant food and serve as nursery grounds for juvenile blue crabs. In this study, we examined the relationships between the diet of very small (4-40 mm CW) juvenile blue crabs and the benthic infauna in shallow, unvegetated nursery coves. We compared infauna in benthic samples with gut contents of juvenile blue crabs from six shallow coves in each of two su...

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