Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil

Shimabukuro, Vanessa; Marques, Antônio Carlos

doi:10.11646/zootaxa.1184.1.2

Cited by 11 publications

(6 citation statements)

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“…It mostly coincides with the traditional proposal of Plumulariida and Haleciida (original Haleciida included the family Syntheciidae; Bouillon 25 28 ; Fig. 4 , Table 3 ), being characterized by “ Hydranthes à hypostome conique, et dont le feuillet endodermique est différencié em deux régions distinctes, hydranthes rétractables dans leurs hydrotèques, Celles-ci ont une symétrie bilatérale, sont dépourvues de diaphragme mais leur plancher est perforé par un hydropore ” (Bouillon 25 , p. 20) 88 . Macrocolonia has the greatest species richness within Medusozoa, with the medusa stage reduced and with fixed gonophores in most part of the species.…”

Section: Discussionunclassified

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Towards a phylogenetic classification of Leptothecata (Cnidaria, Hydrozoa)

Maronna

Miranda

Cantero

et al. 2016

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Leptothecata are hydrozoans whose hydranths are covered by perisarc and gonophores and whose medusae bear gonads on their radial canals. They develop complex polypoid colonies and exhibit considerable morphological variation among species with respect to growth, defensive structures and mode of development. For instance, several lineages within this order have lost the medusa stage. Depending on the author, traditional taxonomy in hydrozoans may be either polyp- or medusa-oriented. Therefore, the absence of the latter stage in some lineages may lead to very different classification schemes. Molecular data have proved useful in elucidating this taxonomic challenge. We analyzed a super matrix of new and published rRNA gene sequences (16S, 18S and 28S), employing newly proposed methods to measure branch support and improve phylogenetic signal. Our analysis recovered new clades not recognized by traditional taxonomy and corroborated some recently proposed taxa. We offer a thorough taxonomic revision of the Leptothecata, erecting new orders, suborders, infraorders and families. We also discuss the origination and diversification dynamics of the group from a macroevolutionary perspective.

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Section: Discussionunclassified

“…Historically, Thyroscyphidae is monophyletic, either considered as a separate clade from Sertulariidae ( e.g. , Calder 53 ; Shimabukuro & Marques 88 ), or as part of Sertulariidae (cf. Millard 23 ; Bouillon 26 ).…”

Section: Discussionmentioning

confidence: 99%

Towards a phylogenetic classification of Leptothecata (Cnidaria, Hydrozoa)

Maronna

Miranda

Cantero

et al. 2016

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“…6, figs. 5, 6.-Winston, 1982 Shimabukuro & Marques (2006) provided a detailed account of its morphology based on material from Brazil.…”

Section: Thyroscyphus Ramosus Allman 1877 Fig 7e Fmentioning

confidence: 99%

Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA

Calder

2013

Zootaxa

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This paper gives a systematic account of 67 species, referable to 22 families and 40 genera, identified in a small collection of hydroids from the central Atlantic coast of Florida between Melbourne and Palm Beach. The fauna mostly comprises an assemblage of tropical western Atlantic species ranging northwards along the southeastern coast of the United States. One new species, Lafoea intorta, is described. Applying Reversal of Precedence provisions in zoological nomenclature, the widely-used generic name Halopteris Allman, 1877 is designated as valid and as a nomen protectum, while its virtually unused senior synonym Halicornaria Hincks, 1865 (not Halicornaria Allman, 1874) is reduced to a nomen oblitum. The genus Pasya Stechow, 1922 is resurrected for the hydroid generally known as Dynamena quadridentata (Ellis & Solander, 1786). Laomedea tottoni Leloup, 1935 is shown to be a junior objective synonym of Clytia fragilis Congdon, 1907, which in turn is a junior subjective synonym of Clytia linearis (Thornely, 1900). Obelia oxydentata Stechow, 1914 is recognized as distinct from O. bidentata Clark, 1875. Hincksella brevitheca Galea, 2009, first described from Cuba, is reported for only the second time; records of the species are added here from Grand Cayman Island and the Caribbean coast of Panama as well as from the Atlantic coast of Florida. Also reported for the second time is Antennella incerta Galea, 2010, previously known only from Guadeloupe in the Caribbean Sea. The true Halopteris diaphana (Heller, 1868), known from the Mediterranean Sea and from Brazil, is reported for the first time from the western North Atlantic. Earlier records of the species in the region are based on misidentifications of H. alternata (Nutting, 1900). Male gonothecae of Halecium calderi Galea, 2010 are reported and illustrated for the first time.

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“…Historicamente, a família Thyroscyphidae tem sido reconhecida como monofilética e à parte de Sertulariidae em alguns estudos (e.g., Calder 1991;Shimabukuro & Marques 2006), mas outros mantêm seus gêneros historicamente associados a Sertulariidae (cf. Millard 1975;Bouillon 1985).…”

Section: Macrocolonia: Sertulariida Taxon Novum (Clado G)unclassified

“…A taxonomia dos Leptothecata é debatida há mais de um século, dificultada pela indefinição de "critérios e regras" para sua classificação, por classificações duais baseadas em apenas parte do ciclo de vida ("pólipos" ou "medusas"), ou por enfatizar poucos caracteres morfológicos "selecionados" (e.g., Figura 1). Mais recentemente, isso tem sido modificado por uma série de inferências filogenéticas nos Hydrozoa, incluindo grupos de leptotecados (Govindarajan et al 2006;Marques et al 2006;Leclère et al 2007Peña Cantero et al 2010;Moura et al 2011aMoura et al , 2011bMoura et al , 2012.…”

unclassified

Análise filogenética de Leptothecata (Hydrozoa; Hydroidolina) e evolução da metagênese

Maronna¹

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Morphometrical analysis, histology, and taxonomy of Thyroscyphus ramosus (Cnidaria, Hydrozoa) from the coast of Brazil

Cited by 11 publications

References 0 publications

Towards a phylogenetic classification of Leptothecata (Cnidaria, Hydrozoa)

Towards a phylogenetic classification of Leptothecata (Cnidaria, Hydrozoa)

Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA

Análise filogenética de Leptothecata (Hydrozoa; Hydroidolina) e evolução da metagênese

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