Results 101 to 110 of about 11,122 (238)

Phylogenetic analyses elucidate the identity and distribution of two early-described species of Arctic Cirratulidae (Annelida, Sedentaria)

European Journal of Taxonomy
Recent expeditions to the North-East Atlantic and the Arctic Ocean yielded an abundance of specimens resembling two species of polychaetes of the family Cirratulidae Ryckholt, 1851 originally described in 1879 and tentatively placed within the genus ...
Maël Grosse, Tom Alvestad, Arne Nygren, Jon Anders Kongsrud   +3 more
doaj   +1 more source

ParaHox Genes Revisited: From Gut Patterning to Integrated Axial and Neural Organization in Rotifera

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 346, Issue 4, Page 357-369, June 2026.
In rotifers, ParaHox genes show a dispersed genomic organization, with Xlox absent across gnathiferans. Exclusive neuronal expression of Gsx and Cdx reveals that ancestral ParaHox genes coordinated neural and epithelial development beyond gut patterning, suggesting an integrated role in early bilaterian body plan organization.
Andreas C. Fröbius, David B. Mark Welch, Holger Herlyn   +2 more
wiley   +1 more source

A new species and a new record of Cirratulidae (Annelida, Cirratulida) from Loki’s Castle vent field

European Journal of Taxonomy
Deep-sea research is a very active field in which environments such as hydrothermal vents are of particular interest because they host a unique and often endemic fauna. In this paper, we describe a new species of the genus Caulleriella Chamberlin, 1919 (
Maël Grosse, Jon Anders Kongsrud, Tom Alvestad, Mari Heggernes Eilertsen, Nataliya Budaeva   +4 more
doaj   +1 more source

Response of benthic polychaetes to environmental variability and El Niño conditions at Petacalco Bay (Guerrero, Mexico)

Ciencias Marinas, 2004
Fluctuations of temperature, salinity, and dissolved oxygen in the superficial (0–7 m) and lower (7–23 m) layers of the water column in Petacalco Bay (Guerrero, Mexico) and their effects on benthic polychaetes were analyzed on different dates between ...
JA Rodríguez-Valencia
doaj   +1 more source

Marine invertebrates and fishes exhibit inconsistent body size responses to ocean acidification

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract Body size is a fundamental characteristic of all living organisms that determines physiological functions and life‐history traits. Ecological theory predicts that ocean acidification can cause body size reductions, confirmed by several studies reporting miniaturization in ectotherms.
Mary E. Hart, Sean D. Connell, Angus Mitchell, Ben P. Harvey, Sylvain Agostini, Joshua M. Heitzman, Ivan Nagelkerken   +6 more
wiley   +1 more source

Sampling effort to characterize estuarine macroinfaunal communities in patchy habitats

Limnology and Oceanography: Methods, Volume 24, Issue 6, June 2026.
Abstract Estuarine benthic macroinfauna have aggregated, patchy distributions, making accurate community measurements dependent upon sampling scales. The purpose of this study is to determine the appropriate core sizes and sampling effort needed to characterize benthic infaunal communities in Corpus Christi Bay, Texas, USA.
Paul A. Montagna
wiley   +1 more source

Larval settlement of polychaetes

, 1999
Many benthic marine invertebrate species have a dispersive larval stage in their life histories. Larvae typically spend hours, weeks, or months developing in plankton before they become competent to settle and metamorphose.
Qian, Pei Yuan
core   +1 more source

Exploring the Potential of Serpulid External Tube Morphology for Rapid Grouping Assessment in Ecological Research: A Case Study From Southern New Zealand

New Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
In ecological field studies where species‐level identification is challenging, practical approaches based on external morphological traits may provide a useful basis for rapid assessments. Here, New Zealand serpulid worms were initially grouped based on their external calcareous tube morphology and subsequently sequenced using the 18S rRNA gene to ...
Tom Massué, Sara Ferreira, Jessica Moffitt, Neil J. Gemmell, Miles D. Lamare   +4 more
wiley   +1 more source

An EST screen from the annelid Pomatoceros lamarckii reveals patterns of gene loss and gain in animals [PDF]

, 2009
Background. Since the drastic reorganisation of the phylogeny of the animal kingdom into three major clades of bilaterians; Ecdysozoa, Lophotrochozoa and Deuterostomia, it became glaringly obvious that the selection of model systems with extensive ...
Nagarajan, A.J., McDougall, C, Chen, W-C, Takahashi Tokiharu, Jayaraman-Nagarajan Ahamarshan, Chen Wei-Chung, Shimeld, Seb, Sebastian M Shimeld, McDougall, Carmel, Chen, Wei Chung, Jayaraman-Nagarajan, A, Shimeld, Sebastian M., Wei-Chung Chen, Tokiharu Takahashi, Troscianko Jolyon, Shimeld, SM, Ferrier David EK, Chen, WC, Ferrier, David E. K., Takahashi, Tokiharu, Troscianko, J, Troscianko, Jolyon, Ferrier, DE, Jolyon Troscianko, Chen, Wei-Chung, Chen, W-C., McDougall, C., Shimeld, S.M., McDougall Carmel, Shimeld Sebastian M, Ferrier, David Ek, Troschianko, J., Carmel McDougall, Jayaraman-Nagarajan, Ahamarshan, David EK Ferrier, Takahashi, T, Ferrier, David Ellard Keith, Ahamarshan Jayaraman-Nagarajan, Takahashi, Tokiharu; id_orcid, Takahashi, T.   +39 more
core   +1 more source

Feeding Ecology of Gould's Arrow Squid Nototodarus gouldi (Cephalopoda: Ommastrephidae) in Aotearoa New Zealand Waters

New Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
Squids are important components of marine ecosystems because of their role as both predator and prey. Across the Tasman Sea, Gould's arrow squid (Nototodarus gouldi) is a commercially targeted ommastrephid squid that supports an economically important fishery.
Lucia Hu, Kathrin S. R. Bolstad, Darren W. Stevens, Jerusha Bennett, Heather E. Braid   +4 more
wiley   +1 more source