Morphological variability of the “Caribbean hidden anemone” Lebrunia coralligens (Wilson, 1890)

González-Muñoz, Ricardo; Garese, Agustín; Tello‐Musi, José Luis; Acuña, Fabián H.

doi:10.1007/s00435-017-0352-0

Cited by 6 publications

(6 citation statements)

References 25 publications

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“…However, the comparison between the green and pink/purple morphotypes reveals no statistical variation, agreeing with previous morphological revisions which suggest that there are no other morphological differences between the morphotypes, besides the variability in the tentacular tip coloration (González-Muñoz et al, 2012). In other species of sea anemones the variation between morphotypes occurs also -Muñoz et al, 2015); or the variation in the cnidae size range in Lebrunia coralligens (Wilson, 1890) (González-Muñoz et al, 2017. Furthermore, although our analyses only focused in the comparison between morphotypes regardless samples body size or reef locality of origin, results suggest a high degree of stability in the size of cnidae of C. gigantea.…”

Section: Discussionsupporting

confidence: 87%

“…Allcock, Watts, & Thorpe, 1998;Manchenko, Dautova, & Latypov, 2000;Watts, Allcock, Lynch, & Thorpe, 2000), while other attempts did not find statistical support to clearly separate species or morphotypes based on cnidae size differences (e.g. Solé-Cava & Thorpe, 1987;Chintiroglou & Karalis, 2000;González-Muñoz et al, 2015;González-Muñoz, Garese, Tello-Musi, & Acuña, 2017).…”

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confidence: 91%

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Comparison of cnidae sizes between the two morphotypes of the giant Caribbean sea anemone Condylactis gigantea (Actiniaria: Actiniidae)

Muñoz

Hernández-Ortíz

Garese

et al. 2018

RBT

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The sea anemone Condylactis gigantea is an ecologically important member of the benthic community in coral reefs of the tropical Atlantic, and displays two morphotypes with respect to the color in their tentacular tips: the green tip morphotype and the pink/purple tip morphotype. Although some molecular and ecological differences have been found between these morphotypes, no other morphological distinctions have been reported, and currently both are still considered a single taxonomic species. In the present study, we perform an exploration on the variability in the size of cnidae between these two morphotypes and performed statistical analyses to compare the 10 categories of cnidae from specimens hosted in the Cnidarian Collection of Gulf of Mexico and Mexican Caribbean, of the Universidad Nacional Autónoma de México, which were previously collected in several coral reefs localities of the Yucatán Peninsula. Results reveal no significant variation in cnidae size between the two morphotypes, but significant variations were found within each morphotype. In addition, we update the composition of the cnidom of C. gigantea, and the utility of the size of cnidae to distinguish between morphotypes or closely related species is discussed.

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Section: Discussionsupporting

confidence: 87%

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confidence: 91%

Comparison of cnidae sizes between the two morphotypes of the giant Caribbean sea anemone Condylactis gigantea (Actiniaria: Actiniidae)

Muñoz

Hernández-Ortíz

Garese

et al. 2018

RBT

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“…Altogether, these morphological results support the importance of detailed cnidome analyses in cnidarian taxonomy (e.g. González-Muñoz et al, 2017;Arrigoni et al, 2018;Manca et al, 2019).…”

Section: Discussionsupporting

confidence: 79%

Cryptic species and host specificity in the bryozoan-associated hydrozoan Zanclea divergens (Hydrozoa, Zancleidae)

Maggioni

Schiavo

Ostrovsky

et al. 2020

Molecular Phylogenetics and Evolution

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Zanclea divergens is a tropical hydrozoan living in symbiotic association with bryozoans and currently reported from Papua New Guinea, Indonesia, and Maldives. Here, we used an integrative approach to assess the morpho-molecular diversity of the species across the Indo-Pacific. Phylogenetic and species delimitation analyses based on seven mitochondrial and nuclear loci revealed four well-supported molecular lineages corresponding to cryptic species, and representing a Pacific clade, an Indian clade, and two Red Sea clades. Since the general polyp morphology was almost identical in all samples, the nematocyst capsules were measured and analysed to search for possible fine-scale differences, and their statistical treatment revealed a significant difference in terms of length and width among the clades investigated.All Zanclea divergens specimens were specifically associated with cheilostome bryozoans belonging to the genus Celleporaria. The Pacific and Indian clades were associated with Celleporaria sp. and C. vermiformis, respectively, whereas both Red Sea lineages were associated with C. pigmentaria. Nevertheless, the sequencing of host bryozoans revealed that one of the Red Sea hydrozoan clades is associated with two morphologically undistinguishable, but genetically divergent, bryozoan species. Overall, our results show that Z. divergens is a species complex composed of morphologically cryptic lineages showing partially disjunct distributions and host specificity. The presence of two sympatric lineages living on the same host species reveal complex dynamics of diversification, and future research aimed at understanding their diversification process will likely improve our knowledge on the mechanisms of speciation among currently sympatric cryptic species.

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“…Recent studies, however, suggested that quantitative analyses of cnidocyst size could help to distinguish between morphotypes or species where traditional nematocyst accounts fail (Garese et al, ). Parametric and non‐parametric statistical treatments have been successfully used to compare cnidocyst capsule size in different groups of the class Anthozoa, such as Actiniaria (Acuña, Excoffon, Zamponi, & Ricci, ; Acu, Ricci, Excoffon, & Zamponi, ; Garese et al, ; González‐Muñoz, Garese, Tello‐Musi, & Acuña, ; Watts, Allcock, Lynch, & Thorpe, ), Corallimorpharia (Acuña & Garese, ) and Zoantharia (Ryland, Brasseur, & Lancaster, ). The present study represents the first case where a statistical analysis of nematocyst size is successfully employed in the morphological characterisation of closely related clades within the genus Zanclea .…”

Section: Discussionmentioning

confidence: 99%

Symbiont footprints highlight the diversity of scleractinian‐associated Zanclea hydrozoans (Cnidaria, Hydrozoa)

et al. 2019

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Hydrozoans of the genus Zanclea have been acknowledged only recently as a fundamental component of the highly diverse fauna associated with reef-building scleractinian corals. Although widely distributed in coral reefs and demonstrated to be important in protecting corals from predation and diseases, the biodiversity of these hydrozoans remains enigmatic due to the paucity of available morphological characters, incomplete morphological characterisations and the possible existence of cryptic species. Recently, molecular techniques have revealed the existence of multiple hidden genetic lineages not yet supported by diagnostic morphological characters. In this work, we further explore the morpho-diversity of three genetic lineages, namely Zanclea associated with the coral genera Goniastrea (clade I), Porites (clade II) andPavona (clade VI). Aside from providing a complete classical characterisation of the polyp and medusa stage of each clade, we searched for new potential taxonomic indicators either on symbiotic hydroids or on host corals. On the hydroids, statistical analyses on almost 7,000 nematocyst capsules revealed a significant difference in terms of nematocyst size among the three Zanclea clades investigated. On each host coral genus, we identified peculiar skeletal modifications related to the presence of Zanclea symbionts. Lastly, we discussed the potential diagnostic value of these footprints in the characterisation of Zanclea-scleractinian associations. K E Y W O R D S cnidome, coral reefs, coral skeleton, coral-associated invertebrates, symbiosis 400 | MANCA et Al.

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Morphological variability of the “Caribbean hidden anemone” Lebrunia coralligens (Wilson, 1890)

Cited by 6 publications

References 25 publications

Comparison of cnidae sizes between the two morphotypes of the giant Caribbean sea anemone Condylactis gigantea (Actiniaria: Actiniidae)

Comparison of cnidae sizes between the two morphotypes of the giant Caribbean sea anemone Condylactis gigantea (Actiniaria: Actiniidae)

Cryptic species and host specificity in the bryozoan-associated hydrozoan Zanclea divergens (Hydrozoa, Zancleidae)

Symbiont footprints highlight the diversity of scleractinian‐associated Zanclea hydrozoans (Cnidaria, Hydrozoa)

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