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Topic: Heliozoa

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Actinophryid

Desmothoracid

	Heliozoa - LoveToKnow 1911
		HELIOZOA, in zoology, a group of the Sarcodina so named by E. Haeckel, 1866.
		They are characterized by the radiate pseudopods, finely tapering at the apex, springing abruptly from the superficial protoplasm, containing a denser, rather permanent axial rod (figs.
		The Heliozoa can move by rolling over on their extended pseudopods; Acanthocystis ludibunda traversing a path of as much as twenty times its diameter in a minute, according to Penard.
	www.1911encyclopedia.org /Heliozoa (1199 words)

	Heliozoa (via CobWeb/3.1 planet2.scs.cs.nyu.edu) (Site not responding. Last check: 2007-11-07)
		Heliozoa, or sun animalcules, are roughly spherical amoeboids with many stiff, microtubule-supported projections called axopods radiating outward from the cell surface.
		Originally the heliozoa were treated together as a formal class Heliozoa or Heliozoea, but the various orders show notable differences, and are no longer believed to be related.
		Several nucleariids were once considered heliozoa, but they do not have microtubule-supported axopods and so are now considered filose amoeboids instead.
	publicliterature.org.cob-web.org:8888 /en/wikipedia/h/he/heliozoa.html (159 words)

	Heliozoa
		The heliozoa, or sun animalcules, comprise several unrelated groups of amoeboid protists.
		They all have many stiff axopods, giving them their radiant appearance from which they are named.
		Most heliozoa are found in freshwater, although there are numerous exceptions.
	www.ebroadcast.com.au /lookup/encyclopedia/he/Heliozoa.html (78 words)

	Actinodine
		The actinodines are a small group of protists, comprising a few genera which range from colored flagellates to colorless heliozoa, found in freshwater and marine habitats.
		They typically have one anterior flagellum, extended into a wing-like shape, surrounded by tentacles or axopods supported by triads of microtubules, which may also arise over the rest of the body.
		These are spherical heliozoa which lack flagella altogether, and are covered in axopods supported by microtubules in a unique double coil pattern.
	www.ebroadcast.com.au /lookup/encyclopedia/ac/Actinodine.html (283 words)

	Heliozoa - MavicaNET (Site not responding. Last check: 2007-11-07)
		Heliozoa exhibit a sphaerical cell-body containing one or more nuclei.
		Along the axopods, mitochondria, vesicles and other particles may be transported underneath the plasma membrane in a process called "granular streaming".
		The heliozoa are radially symmetrical unicells characterised by the possession of long, slender cytoplasmic arms called axopodia, stiffened by a complex structure of microtubules.
	www.mavicanet.com /directory/isl/36442.html (255 words)

	Comparing Asexual and Sexual Reproductive Strategies
		Heliozoa, Amoeba, and Euglena all reproduce by binary fission, which is the mother cell dividing into two daughter cells.
		The Heliozoa and Amoeba belong to the Protista Kingdom.
		Heliozoa live in fresh water and have pencil like axopods that aid in eating.
	www.msnucleus.org /membership/html/k-6/lc/organ/5/lco5_5a.html (477 words)

	Protozoa: Heliozoa. An introduction with photomicrographs.
		The heliozoa are radially symmetrical unicells (see diagram of Actinosphaerium) characterised by the possession of long, slender cytoplasmic arms called axopodia, stiffened by a complex structure of microtubules.
		Larger prey such as algal cells may become enmeshed in the axopodia and similarly incorporated into the cell body.
		"Heliozoa" is another example of a grouping based more upon appearance than a close evolutionary relationship between the organisms contained in it.
	www.micrographia.com /specbiol/protis/helioz/heli0100.htm (223 words)

	Heliozoa - Wikipedia, the free encyclopedia
		These give them the characteristic sun-like appearance for which they are named, and are variously used for capturing food, sensation, movement, and attachment.
		They may be found in both fresh water and marine environments.
		Instead, heliozoa is regarded as a descriptive term applying to various lines of protists.
	en.wikipedia.org /wiki/Heliozoa (177 words)

	Systematics of the Radiolaria
		However, due to the discovery of many new species, and discoveries regarding the morphology of the Heliozoa, Haeckel's classic scheme is no longer deemed acceptable.
		In this taxonomic scheme, Radiolaria are assigned to Actinopoda along with the Heliozoa (sun animals) and Acantharia because of their delicate pseudopodial network.
		Molecular and morphological evidence suggest a close relationship with the Heliozoa (such as Actinophrys, pictured at right) and perhaps the Acantharia (a small group of protists with skeletons of strontium sulfate).
	www.ucmp.berkeley.edu /protista/radiolaria/radsy.html (632 words)

	Acta Protozool (Site not responding. Last check: 2007-11-07)
		The actinophryid heliozoa are revised to include six species: Actinophrys sol (Müller, 1773) Ehrenberg, 1830, A.
		The relatedness between actinophryid heliozoa and pedinellid helioflagellates is discussed.
		This allows a proposition for the sequence of character acquisition and a new group of stramenopiles - the actinodines - uniting pedinellids, ciliophryids and actinophryids.
	www.nencki.gov.pl /abstr/abs_40/abs40-1.htm (176 words)

	PID - Raphidiophrys Taxonomy (Site not responding. Last check: 2007-11-07)
		Individual groups of heliozoa, however, have different mitochondria (the flattened, tubular and discoidal cristae types all are represented), different organization of the axopodial/filopodial axonemes, and different sites of axonemal attachment (and presumed nucleation).
		Centrohelid amoebae with a trilaminate centroplast probably represent a monophyletic group (clade), which is only distantly related to other heliozoa.
		Raphidiophrys, as well as in other genera of scale-producing centrohelid heliozoa, is entirely dependent on the detailed morphology of the scales as viewed with the electron microscope.
	megasun.bch.umontreal.ca /protists/raphp/taxonomy.html (119 words)

	DLC-ME \| The Microbe Zoo \| Water World \| Pond (Site not responding. Last check: 2007-11-07)
		Heliozoa are members of group of organims called actinopods.
		Actinopods are spherical organisms with many projections - like rays of the sun.
		These projecting rays are what give them their name, since actinopod means "ray foot." Heliozoa are found in freshwater ponds.
	commtechlab.msu.edu /sites/dlc-me/zoo/zwp0338.html (74 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Mikrjukov, K.A. and Patterson, D.J. Taxonomy and Phylogeny of Heliozoa.
		Mikrjukov, K.A., Siemensma, F.J. and Patterson, D.J. Phylum Heliozoa.
		Mikrjukov, K.A. In Mikrjukov, K.A. & Patterson, D.J. Taxonomy and Phylogeny of Heliozoa.
	sn2000.taxonomy.nl /Taxonomicon/Person.aspx?id=1511 (70 words)

	Mather Field Vernal Pools - Protozoa
		This means that they use the food produced by the algae for themselves.
		Heliozoa is a protozoan that looks like a soccer ball with spikes.
		Heliozoa sucks out the insides of its prey and eats it.
	www.sacsplash.org /critters/protozoa.htm (292 words)

	B332ref Actinopods
		Patterson, D.J. The Actinophyrid Heliozoa (Sarcodina Actinopoda) as Chromophytes.
		Analysis of Heliozoan Interrelationships: An example of the potentialsand limitations of ultrastructural approaches for the study of Protistan phylogeny.
		Insights into the evolution of Heliozoa (Protozoa Sarcodina) as provided by ultrastructural studies on a new species of flagellate from the genus Pteridomonas.
	www.zoology.ubc.ca /courses/bio332/References/B332refActino.htm (112 words)

	Actinophrys - a well known sun animalcule
		Among the most familiar of the heliozoa, sun animalcules, are members of the family Actinophryidae.
		As a result of the globular form and numerous tapering pseudopodia, this organism looks like a minute sun under the microscope, especially when using the phase contrast technique (Figure 1).
		However actinophryid heliozoa have a different sexual reproduction called autogamy which does not occur in other groups.
	www.microscopy-uk.org.uk /mag/artfeb02/ccactino.html (533 words)

	FEBS Abstract
		The twilight of Heliozoa and rise of Rhizaria: a molecular revolution in the phylogeny of amoeboid protists
		Among them, amoeboid eukaryotes have been notably absent from molecular phylogenies, in spite of their diversity, complexity and abundance.
		To partly fill this phylogenetic gap, we present here the first multigene (small-subunit ribosomal RNA and/or actin) sequence data for the three main groups of “Heliozoa” (Actinophryida, Centrohelida, Desmothoracida), the heliozoan-like Sticholonche, and the radiolarian group Polycystinea.
	www.blackwellpublishing.com /febsabstracts2004/abstract.asp?id=17230 (234 words)

	Sun animalcules and amoebas
		or Heliozoa, phylum Actinopoda (=ray footed) have axopodia, long stiff projections of cytoplasm.
		They cannot locomote that much with them but they are excellent for capturing prey.
		Sometimes Heliozoa can be found feeding on the same prey.
	www.microscopy-uk.org.uk /mag/wimsmall/sundr.html (488 words)

	Actinophrydae - MicrobeWiki
		Actinophrys are part of a group called heliozoa, or "sun animalcule," because their axopodia look like beams of light coming of of a sun.
		Actinophryid heliozoa will go through encystment and divide into two diploid cells called gamonts within the cyst.
		Patterson D.J., Hausmann K. Feeding by Actinophrys sol (Protista, Heliozoa): 1 light microscopy.
	microbewiki.kenyon.edu /index.php/Actinophrydae (557 words)

	Amoeboid - Wikipedia, the free encyclopedia (via CobWeb/3.1 planet2.scs.cs.nyu.edu) (Site not responding. Last check: 2007-11-07)
		Actinopods are divided into the radiolaria and heliozoa.
		The radiolaria are mostly marine protists with complex internal skeletons, including central capsules that divide the cells into granular endoplasm and frothy ectoplasm that keeps them buoyant.
		The heliozoa include both freshwater and marine forms that use their axopods to capture small prey, and only have simple scales or spines for skeletal elements.
	en.wikipedia.org.cob-web.org:8888 /wiki/Amoeboid (553 words)

	Amoebae (via CobWeb/3.1 planet2.scs.cs.nyu.edu) (Site not responding. Last check: 2007-11-07)
		Pseudopodia may have internal microtubules which give them rigidity (as in radiolaria, heliozoa and foraminifera).
		The stiffened pseudopodia of radiolaria and heliozoa tend to extend radially and are called actinopoda.
		Those of foraminifera branch and fuse, and because of the resulting net-like structure, are referred to as granulo-reticulose pseudopodia.
	tolweb.org.cob-web.org:8888 /notes/?note_id=51 (779 words)

	Portal to Protistology: Ecology
		Dovgal I.V. Some regularities in sessile protists evolution// Study and protection of the animal world on the end of the century.
		Mikrjukov K.A. Heliozoa as a component of marine microbenthos: a study of heliozoa of the White Sea// Ophelia.
		Sessile suctorian ciliates Discophrya elongata on leg of water bug Ranatra linearis (according to Dovgal, 2001).
	www.uga.edu /~protozoa/portal/ecology.html (1213 words)

	Eukaryote - Wikipedia, the free encyclopedia (via CobWeb/3.1 planet2.scs.cs.nyu.edu) (Site not responding. Last check: 2007-11-07)
		Centrioles may also be associated in the formation of a spindle during nuclear division.
		These include the radiolaria and heliozoa, which produce axopodia used in flotation or to capture prey, and the haptophytes, which have a peculiar flagellum-like organelle called the haptonema.
		Nuclear division is often coordinated with cell division.
	en.wikipedia.org.cob-web.org:8888 /wiki/Eukaryote (1510 words)

	PARKINSONS POSTFREE BOOKS: ZOOLOGY - PROTOZOANS PROTOZOA Books Unusual & Antiquarian) Postfree-by-Airmail.
		The British Freshwater Rhizopoda and Heliozoa -- Volume I - RHIZOPODA, PART I. As the sub-title and Table of Contents make clear, this book covers the Part I of "Rhizopoda" only.
		Very dark blue (almost fl) embossed cloth HARDBACK with gilt titling and gilt device of Ray Society on front board "Very Good" condition with white shelf numbers on lower spine and 'ghost' of adhesive label in same place.
		The British Freshwater Rhizopoda and Heliozoa -- Volume III - RHIZOPODA, PART III.
	www.parki.com /protozo.htm (1358 words)

	Heliozoa - Dictionnaire Français-Anglais WordReference.com
		We found no English translation for 'Heliozoa' in our French to English Dictionary.
		Or did you want to translate 'Heliozoa' from English to French?
		Forum discussions with the word(s) 'Heliozoa' in the title:
	www.wordreference.com /fren/Heliozoa (41 words)

	From the Cover: The twilight of Heliozoa and rise of Rhizaria, an emerging supergroup of amoeboid eukaryotes -- ...
		The twilight of Heliozoa and rise of Rhizaria, an emerging supergroup of amoeboid eukaryotes
		organization, it has also been proposed that Heliozoa are composed
		Polyphyly of "Heliozoa." The independent branching of Actinophryida,
	www.pnas.org /cgi/content/full/101/21/8066 (3844 words)

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