Results 21 to 30 of about 557 (123)

A new species of sublittoral marine gastrotrich, Lepidodasys ligni sp. n. (Macrodasyida, Lepidodasyidae), from the Atlantic coast of Florida. [PDF]

open access: goldZookeys, 2013
A new species of Lepidodasys is described from sublittoral sandy sediments off the Atlantic coast of Florida. Lepidodasys ligni sp. n. is a small species (≤ 450 µm) with a crossed-helical pattern of small, non-keeled, non-imbricated scales on ...
Hochberg R, Atherton S, Gross V.
europepmc   +4 more sources

Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan [PDF]

open access: diamondSpecies Diversity, 2018
Yamauchi, Shohei, Kajihara, Hiroshi (2018): Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan.
Yamauchi, Shohei, Kajihara, Hiroshi
openaire   +4 more sources

Ultrastructural observations on the spermatozoa of a species of Lepidodasys (Gastrotricha, Macrodasyida) [PDF]

open access: bronzeHelgoland Marine Research, 2007
The ultrastructure of the spermatozoon of a species in the marine gastrotrich genus Lepidodasys is described. The filiform cell is composed of a cork-screw acrosome, a long single mitochondrion surrounded by a helical nucleus, and a flagellum with a 9 × 2 + 2 axonemal arrangement.
Pierboni, Lara   +1 more
openaire   +4 more sources

Confocal Laser Scanning Microscopy Applied to a New Species Helps Understand the Functioning of the Reproductive Apparatus in Stylet-Bearing Urodasys (Gastrotricha: Macrodasyida) [PDF]

open access: gold, 2023
Gastrotrichs are highly diverse and abundant in all aquatic ecosystems; however, they are often overlooked. During a biodiversity survey in Sardinia (Italy), a new species of gastrotrich herein described was discovered.
Cesaretti, Agata   +2 more
core   +3 more sources

Description of two new thaumastodermatids (gastrotricha, macrodasyida) from Korea [PDF]

open access: bronzeKorean Journal of Biological Sciences, 1998
Two new marine gastrotrichs of the family Thaumastodermatidae are described from South Korea. Tetranchyroderma gracilium n. sp. bears pestle organs, tetrancres, and two pairs of large dorsolateral tubes. It seems most closely related to T. massiliense Swedmark, T. heterotubulatum Hummon, Todaro and Tongiorgi, and T. boreale Clausen.
Jimin Lee   +2 more
openaire   +3 more sources

Crasiella clauseni, a New Gastrotrich Species (Macrodasyida, Planodasyidae) from Jeju Island, South Korea [PDF]

open access: goldAnimal Systematics, Evolution and Diversity, 2012
A new gastrotrich species of the genus Crasiella (Planodasyidae) is described from the sublittoral sandy bottom of Jeju Island, South Korea. The family Planodasyidae and the genus Crasiella are recorded for the first time from East Asia.
Jimin Lee, Cheon Young Chang
doaj   +3 more sources

New Data on Reproductive System and Spermatozoa Confirm Macrodasys as a Model in Comparative Reproductive Analysis in Macrodasyida (Gastrotricha) [PDF]

open access: gold, 2022
Gastrotricha Macrodasyida, aquatic worms, are primarily hermaphrodites with internal cross-fertilization and indirect sperm transfer. Insightful information on this matter dates to 1978 and derives from an illuminating work focused on two Macrodasys ...
Balsamo M.   +4 more
core   +3 more sources

Reproductive organs and spermatogenesis of the peculiar spermatozoa of the genus Kryptodasys (Gastrotricha, Macrodasyida), with an appraisal of the occurrence and origin of the tail‐less spermatozoa in Gastrotricha [PDF]

open access: greenJournal of Zoological Systematics and Evolutionary Research, Volume 59, Issue 8, Page 1673-1688, November 2021., 2021
Aflagellate spermatozoa in two species of Kryptodasys are reported. Their ultrastructure shows common features, which appear peculiar to the genus and different from those of male gametes of Dolichodasys, the only other macrodasyidan genus known to have aflagellate sperm.
Loretta Guidi   +3 more
wiley   +2 more sources

Two New Marine Gastrotrichs of the Genus Ptychostomella (Macrodasyida, Thaumastodermatidae) from South Korea [PDF]

open access: bronzeZoological Science, 2003
Two new thaumastodermatid gastrotrichs belonging to the genus Ptychostomella are described from the shallow sublittoral sand bottom in the eastern coast of South Korea. In having the embossed cuticular armature, Ptychostomella orientalis n. sp. is most allied to P.
Cheon Young Chang, Jimin Lee
openaire   +3 more sources

First records of Gastrotricha from South Africa, with description of a new species of Halichaetonotus (Chaetonotida, Chaetonotidae). [PDF]

open access: yesZookeys, 2011
During a survey of the biota of the St. Lucia Estuary in the iSimangaliso Wetland Park, South Africa, a number of Gastrotricha were found among samples of meiofauna.
Todaro MA   +3 more
europepmc   +6 more sources

Home - About - Disclaimer - Privacy