Results 31 to 40 of about 322 (163)

Loss of nervous system complexity – Morphological analyses shed light on the neuronal evolution in Myzostomida (Annelida)

open access: yesActa Zoologica, Volume 104, Issue 4, Page 633-646, October 2023., 2023
Abstract Myzostomida are putatively nested within the errant Annelida and exhibit a unique morphology. The latter fact might possibly be related to their long host‐dependent radiation. Hence, an incomplete segmentation, lack of prominent sensory structures in adults and a dorso‐ventrally flattened body are just some examples.
Patrick Beckers   +2 more
wiley   +1 more source

Sperm ultra-structure and spermiogenesis in Syllis krohni (Polychaeta: Syllidae), with some observations on its reproductive biology

open access: yesScientia Marina, 2006
yllidae show a wide spectrum of both reproductive strategies and sperm types. Analysis of their reproductive patterns could drastically change the presently accepted taxonomic hierarchy of the group.
Elena Lepore   +5 more
doaj   +1 more source

A new species of Exogone Ørsted, 1845 (Annelida: Syllidae: Exogoninae) from Brazilian waters [PDF]

open access: yesPapéis Avulsos de Zoologia, 2019
We describe herein a new species of the abundant polychaete family Syllidae, Exogone brasiliensis sp. nov. The new species is characterized by a peculiar morphology of anterior body falcigers, with shafts and blades modified specially in chaetigers 1 and
Marcelo Veronesi Fukuda   +3 more
doaj   +1 more source

Healed injuries, ontogeny and scleritome construction in a Late Ordovician machaeridian (Annelida, Aphroditiformia)

open access: yesPapers in Palaeontology, Volume 9, Issue 4, July/August 2023., 2023
Abstract Machaeridians are armoured annelids that were morphologically diverse during the Palaeozoic. The scleritome developed from fleshy protrusions at the base of each parapodium, with alternating segments giving rise to differentiated inner and outer shell plates.
Luke A. Parry   +3 more
wiley   +1 more source

Lista de los Syllidae (Polychaeta) de las campañas oceanográficas “Fauna II, III, IV”, del Proyecto “Fauna Ibérica”

open access: yesGraellsia, 1999
Se presentan los resultados de la identificación del material de la Familia Syllidae (Polychaeta) recolectados en las campañas oceanográficas Fauna Ibérica II, III y IV. Se mencionan 96 especies, de las que 6 son nuevas para la Península Ibérica y se dan
G. San Martín
doaj   +1 more source

Spatio‐temporal patterns of eukaryotic biodiversity in shallow hard‐bottom communities from the West Antarctic Peninsula revealed by DNA metabarcoding

open access: yesDiversity and Distributions, Volume 29, Issue 7, Page 892-911, July 2023., 2023
Abstract Aim We studied molecular eukaryotic biodiversity patterns in shallow hard‐bottom Antarctic benthic communities using community DNA metabarcoding. Polar ecosystems are extremely exposed to climate change, and benthic macroinvertebrate communities have demonstrated rapid response to a range of natural and anthropogenic pressures.
Carlos Angulo‐Preckler   +4 more
wiley   +1 more source

Predicting diversity in benthic macro‐scale communities associated with mussel matrices in three Pacific ecoregions

open access: yesMarine Ecology, Volume 44, Issue 2, April 2023., 2023
Abstract Marine mussels are ubiquitous and their tough byssal threads allow for the formation of expansive, age‐aggregated mats known as mussel matrices which can host marine invertebrates and algal macro‐benthic communities playing an important role in food‐web dynamics.
Lynn Wilbur   +3 more
wiley   +1 more source

Distribution patterns of Syllidae (Annelida: Polychaeta) from seagrass (Zostera marina and Z. noltei) meadows in the Ensenada de O Grove (Galicia, NW Spain)

open access: yesScientia Marina, 2013
This paper describes the distribution and composition of the syllid fauna inhabiting seagrass meadows in the Ensenada de O Grove (NW Spain). Samples were collected on muddy sediments colonized by either Zostera marina L., Zostera noltei Hornemann or by a
Patricia Quintas   +2 more
doaj   +1 more source

A new sponge-associated species, Syllis mayeri n. sp.(Polychaeta: Syllidae), with a discussion on the status of S. armillaris (Müller, 1776)

open access: yesScientia Marina, 2005
In the framework of a study carried out along the Belizean coasts, a new species of syllid, Syllis mayeri n. sp., was found harboured by the sponge Ircinia strobilina.
Luigi Musco, Adriana Giangrande
doaj   +1 more source

Guide and keys for the identification of Syllidae (Annelida, Phyllodocida) from the British Isles (reported and expected species)

open access: yesZooKeys, 2015
In November 2012, a workshop was carried out on the taxonomy and systematics of the family Syllidae (Annelida: Phyllodocida) at the Dove Marine Laboratory, Cullercoats, Tynemouth, UK for the National Marine Biological Analytical Quality Control (NMBAQC ...
Guillermo San Martín, Tim M. Worsfold
doaj   +1 more source

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