Academic literature on the topic 'Nemertini'

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Journal articles on the topic "Nemertini"

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Saiz, Salinas José I. "Verzeichnis der Meeres-Nemertinen (Nemertini) von den iberischen Küsten und angrenzenden Meeren." Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn 38 (June 7, 1987): 129–46. https://doi.org/10.5281/zenodo.13671093.

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Cantell, Carl-Erik. "On the anatomy of a new species of Oxypolella (Nemertini) and further notes on Oxypolella bergendali Cantell 1975." Journal of Natural History 39, no. 2 (2010): 123–32. https://doi.org/10.1080/00222930310001657847.

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Cantell, Carl-Erik (2005): On the anatomy of a new species of Oxypolella (Nemertini) and further notes on Oxypolella bergendali Cantell 1975. Journal of Natural History 39 (2): 123-132, DOI: 10.1080/00222930310001657847, URL: http://dx.doi.org/10.1080/00222930310001657847
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Ponomarenko, L. P., T. N. Makarieva, V. A. Stonik, A. S. Dmitrenok, and P. S. Dmitrenok. "Sterol composition of Linneus torquatus (Nemertini) Anopla." Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 111, no. 4 (1995): 575–77. http://dx.doi.org/10.1016/0305-0491(95)00032-4.

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Cantell, Carl-Erik. "Redescription ofLeucocephalonemertes aurantiaca(Grube, 1855) (Nemertini) n.gen. from the Mediterranean." Ophelia 45, no. 2 (1996): 115–25. http://dx.doi.org/10.1080/00785326.1996.10432466.

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Cantell, Carl-Erik. "Micruridesalbopunctatussp.n., A new heteronemertine from the Swedish west coast (Nemertini)." Sarsia 73, no. 2 (1988): 125–30. http://dx.doi.org/10.1080/00364827.1988.10420678.

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Cantell, Carl-Erik. "The anatomy and taxonomy ofMicrura pleuropolian. sp. (Nemertini) from New Zealand." Ophelia 39, no. 1 (1994): 23–33. http://dx.doi.org/10.1080/00785326.1994.10429899.

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Jespersen, �., and J. L�tzen. "Ultrastructure of the nephridio-circulatory connections in Tubulanus annulatus (Nemertini, Anopla)." Zoomorphology 107, no. 3 (1987): 181–89. http://dx.doi.org/10.1007/bf00312311.

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Jespersen, Ase. "Spermiogenesis, sperm structure and fertilization in the palaeonemertean Cephalothrix rufifrons (Nemertini, Anopla)." Zoomorphology 114, no. 2 (1994): 119–24. http://dx.doi.org/10.1007/bf00396644.

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Miyazawa, Keisuke, Masaru Higashiyama, Keiji Ito, et al. "Tetrodotoxin in two species of ribbon worm (Nemertini), Lineus fuscoviridis and Tubulanus punctatus." Toxicon 26, no. 9 (1988): 867–74. http://dx.doi.org/10.1016/0041-0101(88)90327-3.

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Sundberg, Per. "Intraspecific variation in Tetrastemma laminariae (Nemertini): an examination of one of its possible causes." Journal of Zoology 192, no. 2 (2009): 137–41. http://dx.doi.org/10.1111/j.1469-7998.1980.tb04224.x.

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Dissertations / Theses on the topic "Nemertini"

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Mendes, Cecili Barrozo. "Distribuição temporal e aspectos reprodutivos de Cerebratulus Lineolatus Coe, 1905 (NEMERTEA: HETERONEMERTEA), em uma praia do Nordeste Brasileiro." reponame:Repositório Institucional da UFC, 2016. http://www.repositorio.ufc.br/handle/riufc/17711.

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MENDES, Cecili Barrozo. Distribuição temporal e aspectos reprodutivos de Cerebratulus Lineolatus Coe, 1905 (NEMERTEA: HETERONEMERTEA), em uma praia do Nordeste Brasileiro. 2016. 47 f. Dissertação (mestrado) - Universidade Federal do Ceará, Instituto de Ciências do Mar, Fortaleza-CE, 2016.<br>Submitted by Nadsa Cid (nadsa@ufc.br) on 2016-06-15T15:31:37Z No. of bitstreams: 1 2016_dis_cbmendes.pdf: 2757663 bytes, checksum: 58d3925af2e2a7f1e677cf1f129bf924 (MD5)<br>Approved for entry into archive by Nadsa Cid (nadsa@ufc.br) on 2016-06-15T15:32:06Z (GMT) No. of bitstreams: 1 2016_dis_cbmendes.pdf: 2757663 bytes, checksum: 58d3925af2e2a7f1e677cf1f129bf924 (MD5)<br>Made available in DSpace on 2016-06-15T15:32:06Z (GMT). No. of bitstreams: 1 2016_dis_cbmendes.pdf: 2757663 bytes, checksum: 58d3925af2e2a7f1e677cf1f129bf924 (MD5) Previous issue date: 2016<br>Nemerteans are animals with simple reproductive system, composed by saculiformes gonads without cells or specialized agencies in stock or gamete maturation. They are dioecious, mostly, and with external fertilization. While the role of Nemerteans as prey and predator is already well known, there are few studies on its life cycle and reproduction. Therefore, aim of this study is to characterize some aspects of reproductive biology of Cerebratulus lineolatus, through the characterization of the internal morphology of their reproductive system. In addition, to setting whether it is possible to distinguish males from females in the field through its color pattern. Still, studying the population aspects of Cerebratulus lineolatus on a tropical beach in northeastern Brazil, analyzing its abundance, sex ratio, population structure, reproductive period and type of sediment that this species inhabits. Therefore, monthly collections were carried out between April 2014 and March 2015, in periods of low syzygy tides. The collected animals were measured, photographed and examined histologically. The results were analyzed using the statistical program PAST 3.1 and ANASED particle size analysis program. From the analysis, it was revealed that: the coloring of in vivo the gonads of C. lineolatus are not related to sex or maturation of the gonads. Males and females have gonads occupying the entire body diameter, full of gametes when fully mature. The male gametes are organized in clusters during and after their maturation. The female gametes are attached to the wall of the gonad during maturation, being released into the lumen when mature. The transport of gametes takes place through vesicles and the release takes place directly in the water column. A total of 45 animals were collected, 19 males and 19 females. It was impossible to determine the sex of 7 individuals. Males had an average length of 98.6 ± 35.6 mm, not being significantly larger than females (91 ± 32.2). The animals were present throughout the study period, except in August 2014. Their abundance was not related to rainfall or sea surface temperature. The sediment that 87.8% of these animals inhabit is classified as medium or coarse, poorly or very poorly selected sands. The animals reproduce throughout the year, with reproductive peaks at the end of the dry season.<br>Nemertíneos são animais de sistema reprodutor simples, com gônadas saculiformes, sem células ou órgãos especializados no estoque ou maturação de gametas. São dioicos, em sua maioria, e de fecundação externa. Enquanto o papel dos nemertíneos como presa e predador já é bastante conhecido, poucos são os estudos sobre seu ciclo de vida e reprodução. Assim, objetivo do presente estudo é caracterizar alguns aspectos da biologia reprodutiva de Cerebratulus lineolatus, através da caracterização da morfologia interna de seu sistema reprodutor. Além de definir se é ou não possível distinguir machos de fêmeas no campo através de seu padrão de coloração. Ainda, estudar os aspectos populacionais de Cerebratulus lineolatus em uma praia tropical do Nordeste do Brasil, analisando sua abundância, razão sexual, estrutura populacional, período reprodutivo e o tipo de sedimento que esta espécie habita. Para tanto, foram realizadas coletas mensais, entre abril de 2014 e março de 2015, em períodos de marés baixa de sizígia. Os animais coletados foram medidos, fotografados e analisados histologicamente. Os resultados obtidos foram analisados através do programa estatístico PAST 3.1 e do programa de análise de granulometria ANASED. A partir das análises foi possível perceber que: a coloração das gônadas in vivo de C. lineolatus não são relacionadas ao sexo ou maturação das gônadas. Machos e fêmeas apresentam gônadas ocupando todo o diâmetro do corpo, repletas de gametas, quando totalmente maduros. Os gametas masculinos se organizam em aglomerados durante e após sua maturação. Os gametas femininos são acoplados à parede da gônada durante a maturação, sendo liberados para o lúmen quando maduros. O transporte dos gametas se dá através de vesículas e a liberação ocorre diretamente na coluna d’água. Um total de 45 animais foi coletado, sendo 19 machos e 19 fêmeas. Não foi possível determinar o sexo de 7 indivíduos. Os machos tiveram comprimento médio de 98,6  35,6 mm, não sendo significativamente maiores que as fêmeas (91  32,2). Os animais estiveram presentes durante todo o período de estudo, exceto no mês de agosto de 2014. Sua abundância não foi relacionada à pluviosidade ou à temperatura da superfície do mar. O sedimento que 87,8% desses animais habita é classificado como areias média ou grossa e pobremente ou muito pobremente selecionado. Os animais se reproduzem durante todo o ano, com picos reprodutivos no final do período de estiagem.
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Sivaradjam, Samy. "Transmission des caracteres sexuels et pigmentaires au cours du clonage de chimeres allogeniques bipartites male/femelle et femelle/male chez lineus sanguineus (heteronemertes)." Reims, 1987. http://www.theses.fr/1987REIMS005.

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DESSELLE, REMY MARIE-FRANCE. "Transfert et traitement de l'information de position au cours des reponses morphogenetiques aux discontinuites introduites dans l'organisation spatiale de lineus (invertebres, nemertiens)." Reims, 1992. http://www.theses.fr/1992REIMS010.

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Les nemertiens du genre lineus sont les seuls animaux adultes capables de se soumettre a la reconstruction par la greffe de composantes corporelles. Compte tenu de l'histocompatibilite qui les caracterise, nous avons pu suivre les interactions responsables de la production, du positionnement et de la differenciation des cellules impliquees dans une neomorphogenese survenant entre les composantes et/ou dans les composantes chez les sujets heterotopiquement reconstruits. Les greffes xenogeniques fortement majorantes nous ont permis de definir et de circonscrire un champ de recrutement des blastocytes dont l'etendue controle la materialite du blasteme, et un champ de positionnement dont les instructions dirigent l'ampleur et, ce faisant, la nature de la morphogenese. Le fait que deux champs soient sollicites par un processus de developpement fait ressortir l'importance que revetent les collectivites cellulaires dans la reponse morphogenetique. Les greffes allogeniques pratiquees dans la region antecerebrale nous ont permis d'introduire des discontinuites majorantes ou/et minorantes selon des modalites variees dans la sequence des valeurs de position antero-posterieures (vpap) d'un territoire limite. Les reponses ont abouti a la restauration d'un pattern antecerebral normal: regulation par regeneration, transgeneration ou transdifferenciation. La regression selective d'un effectif cellulaire (transgeneration) est un cas unique de reponse survenant chez un adulte. La regulation des excedents et des deficiences etaye la conception du maintien dynamique du pattern spatial par homeostasie. L'antagonisme de certaines reponses montre le role de la polarite de la discontinuite dans la nature de la morphogenese et permet de souligner la prevalence de la communaute cellulaire. L'introduction simultanee de deux discontinuites antagonistes provoquant le silence morphogenetique par depolarisation de deux sequences opposees en vpap permet d'eprouver cette prevalence. Les processus mis en jeu au cours des reponses a l'introduction de discontinuites dans l'axe antero-posterieur du corps d'un lineus ne peuvent s'expliquer qu'a la condition d'admettre que des informations circulent en permanence entre les cellules. De type inhibiteur, ces informations fixeraient des limites a l'autonomie morphogenetique des cellules
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KMITA-CUNISSE, KMITA MARIE-THERESE. "Isolement et caracterisation de genes a homeoboite impliques dans la morphogenese chez un invertebre, le nemertien lineus. Etude de leur capacite de transcription au cours de regulations morphogenetiques chez l'animal adulte (regeneration)." Reims, 1995. http://www.theses.fr/1995REIMS013.

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Depuis plusieurs annees, le ver marin lineus a fait l'objet d'etudes experimentales en raison de ses etonnantes capacites de regulations morphogenetiques chez l'adulte ; regeneration, transgeneration et transdifferenciation. Aussi, cet organisme a la fois apte a la regeneration et reconstructible par la greffe, s'avere-t-il aujourd'hui reunir les qualites d'un bon modele pour l'elucidation des mecanismes de la morphogenese et de ses regulations. Dans le droit fil des resultats reunis a l'echelle morphologique, nous avons entrepris l'etude des genes a homeoboite, connus chez les vertebres et quelques invertebres pour leur role essentiel dans la morphogenese. Nous avons montre que de tels genes sont presents dans le genome de lineus. Parmi les six genes a homeoboite que nous avons mis en evidence, nous avons choisi de centrer notre travail sur deux d'entre eux, lslab et lscad, qui appartiennent respectivement aux classes labial/pg-1 et caudal/cdx. Il s'agit de classes de genes reputes pour leur implication dans la realisation du plan d'organisation corporelle le long de l'axe antero-posterieur (a-p). La comparaison des sequences homeoboite de lineus avec l'ensemble des homeoboites connues chez les vertebres et les invertebres a fait ressortir une conservation prononcee avec celles de vertebres. Cette surprenante proximite entre les genes a homeoboite de lineus et ceux de vertebres s'est confirmee lors de l'analyse des produits des genes lslab et lscad, dont les homeodomaines presentent non seulement l'homologie maximum avec les produits de leurs orthologues murins hox a1 et cdx1, mais aussi une conservation structurale qui s'etend en dehors de l'homeodomaine. Les resultats de nos investigations relatives a l'expression de lslab et lscad, tant lors des phenomenes de regeneration qu'au cours du developpement embryonnaire et larvaire, laissent presager une convergence fonctionnelle, meme si eu egard a l'organisation corporelle notablement plus complexe des vertebres les profils d'expression ne sont pas strictement identiques. Nous pouvons de la sorte considerer que les homologies structurales correspondent a une conservation fonctionnelle. Compte tenu de nos resultats et de l'ensemble des donnees actuellement disponibles, nous pouvons admettre que lineus se place dans la lignee conduisant aux vertebres. Il est hautement probable que ce ver rubane represente une forme apparentee a l'ancetre commun des arthropodes et des vertebres. La suite de notre travail devrait aider a la comprehension des relations phyletiques entre metazoaires telles qu'on peut les deduire de l'evolution des homeogenes dont on sait qu'ils maitrisent la realisation du plan d'organisation corporelle
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Books on the topic "Nemertini"

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Chernyshev, A. V. Sravnitel £nai Ła morfologii Ła, sistematika i filogenii Ła nemertin. Dal £nauka, 2011.

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Schwank, Peter, and Ilse Bartsch. Gastrotricha Und Nemertini (Susswasserfauna Von Mitteleuropa, Bd 3, Teil 1 and 2). Gustav Fischer, 1990.

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Werner, Bernhard, Klaus Odening, Gerhard Hartwich, and E. F. Kilian. Kaestner - Lehrbuch der speziellen Zoologie I/2: Band I: Wirbellose Tiere. Teil 2: Cnidaria, Ctenophora, Mesozoa, Plathelminthes, Nemertini, Entoprocta, Nemathelminthes, Priapulida (German Edition). Spektrum Akademischer Verlag, 1999.

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Nemertinea. Creative Media Partners, LLC, 2023.

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Expedition, British Antarctic. Nemertinea. Franklin Classics Trade Press, 2018.

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Expedition, British Antarctic. Nemertinea. Creative Media Partners, LLC, 2018.

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Nemertinea. Franklin Classics, 2018.

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(Editor), Frederick W. Harrison, and Burton J. Bogitsh (Editor), eds. Platyhelminthes and Nemertinea, Volume 3, Microscopic Anatomy of Invertebrates. Wiley-Liss, 1990.

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Kluijver, M. J. de, S. S. Ingalsuo, A.J.L.van Nieuwenhuijzen, and H.H. Veldhuijzen van Zanten. Macrobenthos of the North Sea (Vol.2):Keys to Polychaet, Nemertina, Sipuncula and Platyhelminthes (World Biodiversity Database CD-ROM Series). Springer, 2001.

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Book chapters on the topic "Nemertini"

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Mehlhorn, Heinz. "Nemertini." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4666.

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Mehlhorn, Heinz. "Nemertini." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_4666-1.

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Clauss, Wolfgang, and Cornelia Clauss. "Nemertini." In Taschenatlas Zoologie. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-61593-5_28.

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Clauss, Wolfgang, and Cornelia Clauss. "Nemertini." In Taschenatlas Zoologie. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-61593-5_28.

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Streble, Heinz, and Annegret Bäuerle. "Schnurwürmer – Nemertini." In Histologie der Tiere. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-53160-0_7.

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Hartwich, Gerhard. "Nemertini Schnurwürmer." In Stresemann - Exkursionsfauna von Deutschland. Band 1: Wirbellose (ohne Insekten). Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-55354-1_8.

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Kem, William R. "Nemertine Toxins." In Animal Toxins. Birkhäuser Basel, 2000. http://dx.doi.org/10.1007/978-3-0348-8466-2_4.

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Kem, William R. "Nemertine Toxins." In Handbook of Neurotoxicology. Humana Press, 2002. https://doi.org/10.1007/978-1-59259-132-9_26.

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Cantell, Carl-Erik. "On the anatomy and taxonomy of Cerebratulus hepaticus Hubrecht, 1879 (Nemertini) from the Mediterranean (Banyuls-sur-Mer)." In Recent Advances in Nemertean Biology. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-4063-5_13.

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Cole, Theodor C. H. "IV. Plathelminthes (Plattwürmer), Rotatoria (Rädertiere), Nematomorpha (Saitenwürmer), Nemertini (Schnurwürmer), Acanthocephala (Kratzer), Chaetognatha (Pfeilwürmer), Phoronida (Hufeisenwürmer), Gastrotricha (Bauchhärlinge), Enteropneusta (Eichelwürmer), Pterobranchia (Flügelkiemer) – Platyhelminthes (flatworms, tapeworms), Rotatoria (rotifers), Nematomorpha (horsehair worms), Nemertini (nemertines), Acanthocephala (spiny-headed worms), Chaetognatha (arrow worms), Phoronida (phoronids), Gastrotricha (gastrotrichs), Enteropneusta (acorn worms), Pterobranchia (sea angels)." In Wörterbuch der Wirbellosen / Dictionary of Invertebrates. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-52869-3_4.

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