Update on Benthic Scyphozoans from the Brazilian Coast (Cnidaria: Scyphozoa: Coronatae)

Molinari, Clarissa Garbi; Morandini, André C.

doi:10.34019/2596-3325.2019.v20.27610

Cited by 4 publications

(1 citation statement)

References 14 publications

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“…The length of the tubes is from a few millimetres up to 1–2 cm [ 49 ], while the diameter of the tube is seldom over 1 mm at the aperture (electronic supplementary material, figure S7), being comparable to the size of the diminutive ‘cloudinomorphs’. Prominent transverse rings and less prominent longitudinal striations are present on the outer surface of tubes [ 50 ]. Due to superficial similarities, they are often mistaken for polychaete tubes [ 51 ].…”

Section: Discussionmentioning

confidence: 99%

Enduring evolutionary embellishment of cloudinids in the Cambrian

et al. 2021

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The Ediacaran–Cambrian transition and the following Cambrian Explosion are among the most fundamental events in the evolutionary history of animals. Understanding these events is enhanced when phylogenetic linkages can be established among animal fossils across this interval and their trait evolution monitored. Doing this is challenging because the fossil record of animal lineages that span this transition is sparse, preserved morphologies generally simple and lifestyles in the Ediacaran and Cambrian commonly quite different. Here, we identify derived characters linking some members of an enigmatic animal group, the cloudinids, which first appeared in the Late Ediacaran, to animals with cnidarian affinity from the Cambrian Series 2 and the Miaolingian. Accordingly, we present the first case of an animal lineage represented in the Ediacaran that endured and diversified successfully throughout the Cambrian Explosion by embellishing its overall robustness and structural complexity. Among other features, dichotomous branching, present in some early cloudinids, compares closely with a cnidarian asexual reproduction mode. Tracking this morphological change from Late Ediacaran to the Miaolingian provides a unique glimpse into how a primeval animal group responded during the Cambrian Explosion.

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Section: Discussionmentioning

confidence: 99%

Enduring evolutionary embellishment of cloudinids in the Cambrian

et al. 2021

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Scyphozoan jellyfish (Cnidaria, Medusozoa) from Amazon coast: distribution, temporal variation and length–weight relationship

Banha

Morandini

Rosário

et al. 2020

Journal of Plankton Research

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Despite the importance of jellyfish in marine ecosystems, many basic biological and ecological aspects remain understudied, especially in tropical regions. Here, we report on scyphozoan jellyfish distribution and ecology to the Amazon coast for the first time, adding the records of Chrysaora lactea, Lychnorhiza lucerna and Stomolophus fritillarius. We also review the records for the three species for the whole Brazilian coastline, describe temporal variability within an Amazon estuary and length–weight relationships. The three species displayed a widespread distribution on the Brazilian coast. In the studied estuary, the species are unevenly distributed throughout the year and their presence was not clearly correlated with environmental factors examined, although L. lucerna is more common during the dry season, as indicated by multivariate and correlation analysis. The length–weight relationships were significant for both L. lucerna (R2 = 0.86, P < 0.0001) and S. fritillarius (R2 = 0.75, P < 0.0001). Jellyfish variability is still unexplained within the estuary despite our 3-year sampling. These jellyfish may be more abundant during the dry season due to the retraction of the amazon plume, but additional sampling designs and methods are needed to test this hypothesis.

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A morphological review of the jellyfish genus Nausithoe Kölliker, 1853 (Nausithoideae, Coronatae, Scyphozoa, Cnidaria)

MOLINARI,

COLLINS,

MORANDINI

2023

Zootaxa

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In this study we address the diversity of the scyphozoan jellyfish genus Nausithoe Kölliker, 1853 (Nausithoidae, Coronatae), questioning the feasibility of using some characters of the medusa stage to identify species and filling in gaps concerning species of the genus and their distributions. Like most scyphozoans, the vast majority of the 21 Nausithoe species have a metagenetic life cycle, but similarity of most polyps within the genus highlights the need for studying morphology of the medusa stage. By analyzing morphological features on preserved and live specimens (polyps and medusae) and comparing these data with the original descriptions, we were able to validate twenty species of the group, providing new information for some of them.

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Update on Benthic Scyphozoans from the Brazilian Coast (Cnidaria: Scyphozoa: Coronatae)

Cited by 4 publications

References 14 publications

Enduring evolutionary embellishment of cloudinids in the Cambrian

Enduring evolutionary embellishment of cloudinids in the Cambrian

Scyphozoan jellyfish (Cnidaria, Medusozoa) from Amazon coast: distribution, temporal variation and length–weight relationship

A morphological review of the jellyfish genus Nausithoe Kölliker, 1853 (Nausithoideae, Coronatae, Scyphozoa, Cnidaria)

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