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Topic: Monogonont

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	Monogonont
		The monogononts (Monogononta) are a class of rotifers, found mostly in freshwater but also in soil and marine environments.
		Monogononts generally have a reduced corona, and each individual has a single gonad, which gives the group its name.
		Males are generally smaller than females, and are produced only during certain times of the year, with females otherwise reproducing through parthenogenesis.
	www.ebroadcast.com.au /lookup/encyclopedia/mo/Monogonont.html (60 words)

	Ludmila A. Kutikova. Variability in obligatory parthenogenetic rotifers (Rotifera, Bdelloida).
		In monogononts key structures are represented by several types of (7 types of corona and 5 types of mastax) reflecting specificity of several types of locomotion and feeding.
		Hetergonetic monogononts in their variability display diversity of morphological organization of the entire body; variability of bdelloids has a different character and concerns characters of the lower taxa (Fig.
		The branches of bdelloids and monogononts that diverged at an early stage of their development differ in the rates of evolution, the terms of their history being relatively similar.
	www.zin.ru /annrep/2000/13.html (1399 words)

	Africa Gómez Paper Abstracts
		Monogonont rotifers are cyclical parthenogens living in limnic habitats with considerable seasonal variation and often with island-like features.
		In this paper, we analyze the structure of diversity in monogonont rotifers using several data sets: taxonomic and intraspecific diversity as reported in identification keys, morphological variation reported in ecological studies, and allozyme and mating behavior patterns.
		Monogonont rotifers seem to have conditions for an active speciation, which may be particularly promoted by seasonal specialization and timing of bisexual reproduction.
	www.uv.es /~africa/abstracts.html (2178 words)

	Dept of MCB, Harvard U: Faculty and Research - Meselson
		While we are proceeding with this and with experiments to detect the possible occurrence in bdelloids of certain obscure and unprecedented forms of genetic exchange, we have also begun to examine bdelloid genomes for characteristics that may be associated with long-term asexuality.
		It would therefor appear that active retrotransposons cannot be retained in asexual lines over evolutionary time periods or that the absence of such elements is a pre-condition for the avoidance of extinction in asexual lines, a possibility that would ascribe to sexual reproduction a role in limiting the accumulation of insertion mutations.
		Measurements of the genome size of the monogonont rotifer Brachionus plicatilis and of the bdelloid rotifers Philodina roseola and Habrotrocha constricta.
	golgi.harvard.edu /Faculty/Meselson.html (878 words)

	Rates of nucleotide substitution in sexual and anciently asexual rotifers -- Welch and Meselson 98 (12): 6720 -- ...
		and nonsynonymous substitution in bdelloid and monogonont lineages
		Scatter plot of unadjusted distances OB (bdelloids) and OM (monogononts) between the common bdelloid-monogonont ancestor and bdelloids or monogononts, respectively, based on 4-fold degenerate differences (A) and amino acid differences (B).
		for hsp82 are applicable to bdelloid and monogonont genomes in
	www.pnas.org /cgi/content/full/98/12/6720 (3179 words)

	Journal of Limnology, vol. 63 (Supplement 1) 2004
		Phenotypic variation and developmental instability of life-history traits: a theory and a case study on within-population variation of resting eggs formation in Daphnia.
		Diapausing, fertilized eggs in monogonont rotifers typically are formed after an environmental signal induces amictic females to produce mictic daughters.
		In contrast to monogonont rotifers, bdelloids are able to enter dormancy at any age in response to unfavorable conditions.
	www.iii.to.cnr.it /pubblicaz/JL_63_supl/JL_63_supl.htm (6213 words)

	Research in the Mark Welch Laboratory - The Bay Paul Center Portal
		Terry Snell and others at Georgia Tech, we are isolating and characterizing the genes responsible for inducing mixis and for mate recognition in monogonont rotifers-- one of the largest, most successful groups of cyclical parthenogens.
		By tracking the evolution of these genes and their interaction with the genome and the environment we hope to understand how genotype and environment interact to regulate sex and determine its frequency in cyclical parthenogens.
		The monogonont rotifer Brachionus plicatilus (right, carrying a developing egg) is facultatively sexual.
	jbpc.mbl.edu /research-markwelch.html?option=content&task=view&id=67 (1056 words)

	RLWallace - Research, Big Bend (Site not responding. Last check: 2007-11-02)
		Twelve families of monogonont rotifers comprising 20 genera and 25 species were identified from these desert waters.
		Five species of monogononts as well as several bdelloids need further taxonomic work but appear to be new to science.
		This work represents the first survey of rotifers from a diverse assortment of desert waters and is an important first step for future management initiatives.
	www.ripon.edu /faculty/wallacer/BigBendAbstract1.html (242 words)

	VLIZ - Integrated Marine Informations System - IMIS (Site not responding. Last check: 2007-11-02)
		Taxonomical and ecological notes on the monogonont Rotifera from a dune pool in Belgium
		Segers, H. Taxonomical and ecological notes on the monogonont Rotifera from a dune pool in Belgium.
		Segers, H. Taxonomical and ecological notes on the monogonont Rotifera from a dune pool in Belgium, in: Beeckman, T.; Caemelbeke, K. (Ed.) (1998).
	www.vliz.be /vmdcdata/imis2/ref.php?refid=37851 (262 words)

	[No title]
		In contrast, as seen in Figure 2, such bands are clearly evident under the same experimental conditions in amplifications of DNA from a monogonont rotifer (Brachionus plicatilis) and from all other animal species we have analyzed, including echinoderms, insects, amphibians, fishes, and mammals.
		DNA from four species of monogonont rotifers (Brachionus plicatilis, Brachionus calyciflorus, Sinantherina socialis, and Eosphora ehrenbergii) representing three different families (Brachionidae, Flosculariidae and Notommatidae) will also be examined, using the same experimental procedures.
		Having already found reverse transcriptases characteristic of specific families of retrotransposons in monogononts and in diverse species of other phyla but not in bdelloids, it would be of interest to compare the overall pattern of middle repetitive DNA distribution in bdelloids with that in monogononts.
	golgi.harvard.edu /meselson/NSF99.htm (5477 words)

	Phylum Rotifer (cont (Site not responding. Last check: 2007-11-02)
		In both free-swimming and sessile monogonont species, the cuticle is commonly thick and rigid, forming a protective lorica.
		Under certain conditions, a different type of monogonont female is produced, referred to as mictic females.
		Mictic females produce their eggs through meiosisi, so that all their eggs are haploid.
	bama.ua.edu /~clydeard/bsc376/lecture17.htm (954 words)

	[No title]
		Pourriotia carcharodonta, a new genus and species of monogonont rotifer from subantarctic Îles Kerguelen (Terres Australes et Antarctiques Françaises).
		Segers, H. Scaridium elongatum n.sp., a new monogonont rotifer from Brazil.
		Contribution to the knowledge of the monogonont Rotifera of Zanzibar, with a note on Filinia novaezealandiae Shiel and Sanoamuang, 1993.
	users.unimi.it /melone/trophi/html/references.html (1911 words)

	Conference on Mathematical Modelling of Population Dynamics (Site not responding. Last check: 2007-11-02)
		A Numerical simulation for the dynamics of the sexual phase of monogonont rotifera
		A. Calsina and J. Ripoll, Hopf bifurcation in a structured population model for the sexual phase of monogonont rotifers, in press.
		A. Calsina, J.M. Maz.on and M. Serra, A mathematical model for the phase of sexual reproduction in monogonont rotifers, J. Math.
	ux1.math.us.edu.pl /cmmpd/conference/talks.htm (6515 words)

	Literature: Why Do Bdelloid Rotifers Reproduce Only Asexually?
		Although their monogonont relatives alternate seasonally between sexual reproduction and parthenogenesis, the bdelloids appear incapable of sexual reproduction.
		The LINE-1 and gypsy sequences were absent in the bdelloid rotifers, however.
		The monogonont rotifers as well as in acanthocephalans both exhibited the LINE-1 and gypsy sequences.
	wps.prenhall.com /esm_freeman_evol_3/0,8018,849314-,00.html (551 words)

	Asexual diapause induced by food limitation in the rotifer Synchaeta pectinata Ecology - Find Articles
		This diapause response should increase fitness in environments where food concentrations during the growing season intermittently decrease below those necessary for positive population growth.
		Many monogonont rotifers have heterogonic life cycles (Gilbert 1980, 1983, 1992, 1993).
		During a growing season, reproduction is primarily by diploid female parthenogenesis, but there may be one or more periods when some proportion of the population reproduces sexually.
	www.findarticles.com /p/articles/mi_m2120/is_n4_v79/ai_20793933 (961 words)

	Contributions to Zoology (Site not responding. Last check: 2007-11-02)
		However, the filospermoideans probably inject their sperm into the body of the partner (Mainitz, 1989; Sterrer, 1996), while hypodermic impregnation is also a possibility for the scleroperalian bursovaginoids (Mainitz, 1989).
		Furthermore, the unequivocal scoring of hypodermic impregnation for Rotifera is based upon its presence in monogonont rotifers (Clément and Wurdak, 1991).
		The character is inapplicable in the parthenogenetic bdelloids, and it is not found in Seison.
	dpc.uba.uva.nl /cgi/t/text/text-idx?c=ctz;idno=m7301a01;view=text;rgn=div2;cc=ctz;node=m7301a01%3A8.2 (6354 words)

	SICB - 2001 meeting- Abstract Details (Site not responding. Last check: 2007-11-02)
		A more recent 18S rDNA study showed Acanthocephala as the sister group of Rotifera.
		Several new 18S sequences for acanthocephalans and monogonont rotifers are now available.
		We are sequencing the 18S genes from three additional rotifer species: The bdelloids Habrotrocha constrictaand Adineta vaga, and the monogonont floscularid Sinantherina socialis.
	www.sicb.org /meetings/2001/schedule/abstractdetails.php3?id=1805 (186 words)

	Rotifers: Exquisite Metazoans -- Wallace 42 (3): 660 -- Integrative and Comparative Biology
		Thickness of the arrows illustrates the relative frequency of life cycle components (asexual and sexual) in monogonont rotifers.
		When amictic females of this planktonic monogonont are exposed
		Mark Welch, D. Early contributions of molecular phylogenetics to understanding the evolution of Rotifera.
	icb.oxfordjournals.org /cgi/content/full/42/3/660 (3614 words)

	Search results for research title
		De Kleine Vijver van het Fort 8 van Hoboken.
		De Smet, W.H. Planktonic and periphytic monogonont Rotifera from the Arctic.
		De Smet, W.H. Notes on the monogonont rotifers from submerged mosses collected on Hopen (Svalbard).
	www.br.fgov.be /cgi-bin/BIODIV/research.pl?res_id=768 (946 words)

	Introduction to the Rotifera
		But not all rotifers swim freely; some like the Flosculariacean rotifer above at center, will cement themselves by their foot to a handy alga or bit of dirt and sift the water for food.
		At right, Collotheca is another monogonont rotifer, shown here bearing an egg on its stalk end.
		Notice the extemely long coronal cilia this rotifer uses to catch food.
	www.ucmp.berkeley.edu /phyla/rotifera/rotifera.html (1701 words)

	dadadsadasdadasda
		Bdelloid rotifers (microscopic animals) are the best-studied "ancient asexuals"; evidence suggests that they have survived and flourished for at least 100 million years without having sex!
		I use degenerate PCR to amplify meiosis-specific genes from bdelloid and sexual monogonont genomes.
		The absence of meiotic genes is consistent with ancient asexuality; the presence of meiotic genes would suggest the capacity for meiosis and possibly sex!
	euplotes.biology.uiowa.edu /web/ams.html (353 words)

	Sensory Ecology, Neurophysiology and Behavior of Zooplankton (Site not responding. Last check: 2007-11-02)
		Epiphanes senta is a benthic rotifer species that occurs in temporary waters and displays a mating behavior which has not been described for monogonont rotifers so far.
		Monogonont rotifers show destinctive periods within their life cycle during which mictic females appear.
		Mictic females produce haploid eggs which develop into males or into diapausing eggs if fertilized.
	www.aslo.org /meetings/victoria2002/archive/866.html (202 words)

	Amazon.com: The Red Queen: Sex and the Evolution of Human Nature: Books: Matt Ridley (Site not responding. Last check: 2007-11-02)
		SIPs: monogonont rotifers, asexual ones, lek paradox, male ornaments, organelle genes (more)
		When a surgeon cuts into a body, he knows what he will find inside.
		monogonont rotifers, asexual ones, lek paradox, male ornaments, organelle genes, concealed ovulation, asexual species, tail streamers, tangled bank, more descendants, fl grouse, plump women, sexual selection theory, sperm competition, brush turkey, sage grouse, genetic mixing
	www.amazon.com /Red-Queen-Evolution-Human-Nature/dp/0060556579 (2388 words)

	[No title]
		Spillane C, Steimer A, Grossniklaus U (2001) Apomixis in agriculture: the quest for clonal seeds.
		Characterization of gene expression in monogonont rotifers during parthenogenetic and sexual reproduction Claus-Peter Stelzer and Mathilde Benard University of Müenster, Institute of Animal Evolution and Ecology Department of Evolutionary Biology, Münster, Germany.
		Monogonont rotifers, a sister group to the bdelloid rotifers, can switch between parthenogenesis and sexual reproduction (mixis).
	pixbox.co.uk /linnean/details/ESF_Prog___Abstrs.doc (4868 words)

	Anhydrobiosis in Bdelloid Species, Populations and Individuals -- Ricci and Caprioli 45 (5): 759 -- Integrative and ...
		the response to a rapidly changing habitat, as monogonont rotifers
		to monogononts, it is not clear whether anhydrobiosis imposes
		Although it is known that they do not
	icb.oxfordjournals.org /cgi/content/full/45/5/759 (2454 words)

	Amazon.com Books: Monogonont (Site not responding. Last check: 2007-11-02)
		Learn how to be an alpha male: A guide by Joseph Dewey
		Monogonont Rotifera recorded in the world literature (except Africa) from 1960 to 1992 (Documents de travail de l'I.R.Sc.N.B) by Margaretha de Ridder (Unknown Binding - 1997)
		The Red Queen: Sex and the Evolution of Human Nature by Matt Ridley (Paperback - May 1, 2003)
	www.amazon.com /exec/obidos/external-search?tag=httpexplaguid-20&mode=books&keyword=Monogonont (288 words)

	SICB - 2005 meeting - Abstract Details (Site not responding. Last check: 2007-11-02)
		Aquatic species inhabiting temporary habitats must complete their life cycle before environmental conditions preclude reproduction and survival.
		In the case of monogonont rotifers, it is generally held that at least one generation of asexual (amictic) reproduction is necessary before diapausing eggs can be produced through sexual (mictic) reproduction.
		Here we present life history data for an undescribed Hexarthra species inhabiting shallow ponds in the Chihuahuan Desert which may dry up within days.
	www.sicb.org /meetings/2005/schedule/abstractdetails.php3?id=978 (286 words)

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