Results 91 to 100 of about 891 (109)

Paleozoic Peracarida of North America / Frederick R. Schram.

, 1974
openaire   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

The spermatozoon of peracarida

Journal of Ultrastructure Research, 1980
The spermatozoon of Tanais cavolinii and Apseudes latreille (Crustacca, Peracarida) is elliptic and contains an irregular nucleus, a large and complicated acrosomal complex, mitochondria, and a cytoplasm with abundant microvesicles. Centriolar and flagellar structures seem to be completely lacking and the cell is immotile.
Franco Cotelli, Carla Lora Lamia Donin
openaire   +3 more sources

The spermatozoon of peracarida. I. The spermatozoon of terrestrial isopods

Journal of Ultrastructure Research, 1976
Spermatozoa of isopods belonging to the suborder of Oniscoidea have been studied by means of electron microscopy, both in sections and in negatively stained whole mounts. The motionless sperm is composed of a complicated acrosomal complex, a filamentous nucleus with uncondensed chromatin, a long paracrystalline perforatorium, a couple of peculiar ...
Carla Lora Lamia Donin, Giulio Lanzavecchia, Franco Cotelli, Marco Ferraguti   +3 more
openaire   +3 more sources

Mictacea, a New Order of Crustacea Peracarida

Journal of Crustacean Biology, 1985
ABSTRACT A new order, Mictacea, is proposed within the superorder Peracarida for Hirsutia bathyalis Sanders, Hessler, and Garner and Mictocaris halope Bowman and Iliffe. The new order is characterized by a unique combination of characters, most of which are not unique to the Mictacea, but are found in at least one other peracaridan order.
Howard L. Sanders, Susan P. Garner, Thomas M. Iliffe, Robert R. Hessler, Thomas E. Bowman   +4 more
openaire   +2 more sources

Evolutionary morphology of the circulatory system in Peracarida (Malacostraca; Crustacea)

Cladistics, 2010
AbstractWe demonstrate that by formulating guidelines for evolutionary morphology the transparency, reproducibility, and intersubject testability of evolutionary hypotheses based on morphological data can be enhanced. The five main steps in our concept of evolutionary morphology are (i) taxon sampling, (ii) structural analysis, (iii) character ...
Stefan Richter, Christian S. Wirkner
openaire   +3 more sources

The ANDEEP Tanaidacea (Crustacea: Peracarida) revisited <br />III: the family Akanthophoreidae [PDF]

Zootaxa, 2014
A restricted phylogenetic analysis is conducted to test if the family Akanthophoreidae is monophyletic. The family was found to be monophyletic with a Bremer support of 11 and is redefined to include the genera Akanthophoreus, Chauliopleona, Mimicarhaphura, Parakanthophoreus gen.
Larsen, Kim, Araújo-Silva, Catarina L.
openaire   +3 more sources

Potiicoara brasiliensis: a new genus and species of Spelaeogriphacea (Crustacea: Peracarida) from Brazil with a phylogenetic analysis of the Peracarida

Journal of Natural History, 1987
The second genus and species of Spelaeogriphacea, Potiicoara brasiliensis, is described (type-locality: Brazil, Mato Grosso do Sul, Bonito, Gruta Azul). The specimens were found swimming in a lake 50 m inside the cave entrance. The new genus is distinguished from Spelaeogriphus Gordon by having a shorter carapace, mandibular palp three-segmented ...
openaire   +4 more sources

New species of the genus Zeuxo (Peracarida, Tanaidacea)

Crustaceana, 2014
Two new species ofZeuxoTempleton, 1840 are described, one from Korea (Z. koreaensis), belonging to theZ. normani(Richardson, 1905) species complex, and one from Turkey (Z. turkensis). Two otherZeuxospecies (Z. exsargassoSieg, 1980 andZ. holdichiBamber, 1990) are redescribed. The speciesZ.
openaire   +2 more sources

Diversity of Peracarida (Crustacea, Malacostraca) caught in a suprabenthic sampler

Antarctic Science, 2003
The composition of suprabenthic Peracarida from a depth between 1 and 1.33 m above the seafloor was investigated. In order to study the abundance and diversity quantitatively, the samples were taken by means of the supranet of an epibenthic sledge off Kapp Norvegia and off the South Shetland Islands.
Anne-Nina Lörz, Angelika Brandt
openaire   +2 more sources

Syncarida — N. N. (Euphausiacea, Pancarida + Peracarida) [PDF]

, 2000
Within the Xenommacarida the Syncarida form the sister group of an as yet unnamed unity of the Euphausiacea and the Pancarida + Peracarida.
openaire   +1 more source