Results 71 to 80 of about 779 (167)

Seismic Disturbance, Productivity and Depth Shape Hadal Benthic Habitats and Biodiversity in the Japan, Ryukyu and Izu‐Ogasawara Trenches (Northwest Pacific Ocean)

Journal of Biogeography, Volume 52, Issue 11, November 2025.
ABSTRACT Aim This study characterises benthic habitats and associated biodiversity in three Japanese subduction trenches, and explores the effects of trench‐specific differences in large‐scale seismic events, disturbance and productivity regimes on habitat structure and assemblage composition.
Denise J. B. Swanborn, Todd Bond, Heather A. Stewart, Elrond A. Garcia, Melanie S. Stott, Hiroshi Kitazato, Alan J. Jamieson   +6 more
wiley   +1 more source

A model‐based assessment of anthropogenic disturbance on lotic macroinvertebrate assemblages

Ecosphere, Volume 16, Issue 10, October 2025.
Abstract Traditionally, the effects of anthropogenic disturbance on biological assemblages are elucidated by comparing an assemblage observed at a site to one that represents a minimally disturbed state. Unfortunately, defining a minimally disturbed state is extremely challenging because of the extent of human disturbance.
Darin A. Kopp, John L. Stoddard, Philip R. Kaufmann, Alan T. Herlihy, Ryan A. Hill, Meredith M. Brehob, Robert D. Sabo   +6 more
wiley   +1 more source

A Taxonomic Catalogue of Japanese Nemerteans (Phylum Nemertea) [PDF]

Zoological Science, 2007
A literature-based taxonomic catalogue of the nemertean species (Phylum Nemertea) reported from Japanese waters is provided, listing 19 families, 45 genera, and 120 species as valid. Applications of the following species names to forms previously recorded from Japanese waters are regarded as uncertain: Amphiporus cervicalis, Amphiporus depressus ...
openaire   +3 more sources

Does the frontal sensory organ in adults of the hoplonemertean Quasitetrastemma stimpsoni originate from the larval apical organ?

Frontiers in Zoology, 2020
Background The apical organ is the most prominent neural structure in spiralian larvae. Although it has been thoroughly investigated in larvae of the class Pilidiophora in phylum Nemertea, studies on its structure in other nemertean larvae are limited ...
Timur Yu Magarlamov, Vyacheslav Dyachuk, Alexey V. Chernyshev   +2 more
doaj   +1 more source

The aquatic annelid fauna of the San Marcos River headsprings, Hays County, Texas

ZooKeys, 2016
The San Marcos River in Central Texas has been well studied and has been demonstrated to be remarkably specious. Prior to the present study, research on free-living invertebrates in the San Marcos River only dealt with hard bodied taxa with the exception
McLean L.D. Worsham, Randy Gibson , David G. Huffman   +2 more
doaj   +3 more sources

PARTHENOGENESIS IN CARCINONEMERTES SPP. (NEMERTEA: HOPLONEMERTEA)

The Biological Bulletin, 1986
When juveniles of Carcinonemertes spp. are removed from male crabs and raised in the laboratory, a 50:50 sex ratio is obtained. Isolated females produce egg strings typical of Carcinonemertes, except that the embryos are haploid, with about 13 chromosomes per cell. Larvae develop at least to hatching, and some do hatch. Nearly all of the 146 females so
openaire   +3 more sources

Macrozoobenthos State in Odessa Bay Coastal Waters in 2016-2017

Людина і довкілля: Проблеми неоекології, 2019
Purpose. Study of macrozoobenthos contemporary state in Odessa Bay coastal waters in 2016-2017. Methods. Standard methods of macrozoobenthos sampling, determination, estimation of number and biomass Results.
S. M. Snigirov, A. V. Chernyavskiy, E. A. Naum, A. A. Galkina, V. I. Medinets, Ye. I. Gazyetov, O. P. Konareva, P. M. Snigirov   +7 more
doaj   +1 more source

Ribbon worms (phylum Nemertea) from Bodega Bay, California: A largely undescribed diversity [PDF]

ZooKeys
The diversity of nemerteans along the Pacific coast of the United States is regarded as well characterized, but there remain many cryptic, undescribed, and “orphan” species (those known only in their larval form).
Christina I. Ellison, Madeline R. Frey, Eric Sanford, Svetlana Maslakova   +3 more
doaj   +3 more sources

Comparative description of ten transcriptomes of newly sequenced invertebrates and efficiency estimation of genomic sampling in non-model taxa

Frontiers in Zoology, 2012
Introduction Traditionally, genomic or transcriptomic data have been restricted to a few model or emerging model organisms, and to a handful of species of medical and/or environmental importance.
Riesgo Ana, Andrade Sónia C S, Sharma Prashant P, Novo Marta, Pérez-Porro Alicia R, Vahtera Varpu, González Vanessa L, Kawauchi Gisele Y, Giribet Gonzalo   +8 more
doaj   +1 more source

Species Diversity of Tetranemertes (Nemertea: Monostilifera) in Japan

Species Diversity
The eumonostiliferous hoplonemertean genus Tetranemertes Chernyshev, 1992 consists of 10 named species worldwide, whereas only one has been reported from Japanese waters. In this paper, we i) describe Tetranemertes aurantia sp.
Jamael C. Abato, Natsumi Hookabe, Hiroshi Kajihara   +2 more
doaj   +1 more source