Evidence of reverse development in Leptomedusae (Cnidaria, Hydrozoa): the case of Laodicea undulata (Forbes and Goodsir 1851)

Vito, Doris De; Piraino, Stefano; Schmich, Jürgen; Bouillon, Jean; Boero, Ferdinando

doi:10.1007/s00227-005-0182-3

Cited by 17 publications

(6 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After sexual reproduction senescent medusae generally die, but exceptions are known: several cnidarians retain the potential for ontogeny reversal (Piraino et al 2004). Since the discovery of the potential of Turritopsis medusae for reverse ontogeny (Bavestrello et al 1992), additional species with the same developmental plasticity have been observed (Piraino et al 2004, De Vito et al 2006, indicating that this potential might be more common than previously thought. In addition, the new polyp stages resulting from the normal ontogenetic cycle (by egg fertilization and embryonic and larval development) will fuel the benthic reservoir for future outbreaks (Fig.…”

Section: Plankters With Modular Benthic Stages (The Cnidaria Case)mentioning

confidence: 99%

Gelatinous plankton: irregularities rule the world (sometimes)

Boero

Bouillon²,

Gravili³

et al. 2008

Mar. Ecol. Prog. Ser.

333

229

View full text Add to dashboard Cite

In spite of being one of the most relevant components of the biosphere, the plankton-benthos network is still poorly studied as such. This is partly due to the irregular occurrence of driving phenomena such as gelatinous plankton pulses in this realm. Gelatinous plankters rely on their life cycles and histories to exploit temporarily abundant resources with an undeniable, but often overlooked, impact on marine food webs. Dramatic increases of gelatinous filter-feeders and/or carnivores (both native and nonindigenous species) are frequently observed, and explanations of these blooms alternatively invoke ecosystem variability, climate change, unspecified anthropogenic perturbation or removal of top predators from trophic networks. Gelatinous plankters, however, are not anomalies in plankton dynamics: the recognition of the ecological importance of their pulses, based on their life cycle patterns (often involving benthic stages), is a critical breakthrough to understand the cycling diversity of plankton in space and time. The current study focuses on the many neglected aspects of the ecology and biology of gelatinous zooplankton, describes how life cycle patterns are central in marine ecology, as are the pulses of gelatinous organisms, and highlights how such a dramatic lack of knowledge can affect our understanding of the marine ecosystem as a whole.

show abstract

Section: Plankters With Modular Benthic Stages (The Cnidaria Case)mentioning

confidence: 99%

Gelatinous plankton: irregularities rule the world (sometimes)

Boero

Bouillon²,

Gravili³

et al. 2008

Mar. Ecol. Prog. Ser.

333

229

View full text Add to dashboard Cite

show abstract

“…Clytia mccradyi ) that are capable of asexually budding polyps directly on the body of the medusa, either on the manubrium or on the radial canals [ 57 – 59 ]. While the direct polyp formation from both degenerating juvenile medusa and medusa tissue fragments of Aurelia are both comparable to reverse development observed in two hydrozoans, Turritopsis dohrnii [ 43 , 44 , 46 , 60 , 61 ] and Laodicea undulata [ 45 , 62 ], based on the common regressing stage and the extent of transformation potential. Both the blastostyle budding in C .…”

Section: Discussionmentioning

confidence: 69%

“…dohrnii nor L . undulata are dominant species, the ecological advantage of reverse development in Hydrozoan species are not obvious [ 45 ], but the discovery of life cycle reversal in Aurelia may provide some critical benefits to research on jellyfish ecology. And the life cycle reversal potential of medusae or their fragments, together with their regenerative capability, should also lead to re-evaluation of the various countermeasures against blooming jellyfishes, such as the autonomous jellyfish removal robot system deployed in South Korea that ‘grinds them into a pulp that disperses in the water’ [ 71 ].…”

Section: Discussionmentioning

confidence: 99%

Life Cycle Reversal in Aurelia sp.1 (Cnidaria, Scyphozoa)

Zheng

Zhang

et al. 2015

PLoS ONE

View full text Add to dashboard Cite

The genus Aurelia is one of the major contributors to jellyfish blooms in coastal waters, possibly due in part to hydroclimatic and anthropogenic causes, as well as their highly adaptive reproductive traits. Despite the wide plasticity of cnidarian life cycles, especially those recognized in certain Hydroza species, the known modifications of Aurelia life history were mostly restricted to its polyp stage. In this study, we document the formation of polyps directly from the ectoderm of degenerating juvenile medusae, cell masses from medusa tissue fragments, and subumbrella of living medusae. This is the first evidence for back-transformation of sexually mature medusae into polyps in Aurelia sp.1. The resulting reconstruction of the schematic life cycle of Aurelia reveals the underestimated potential of life cycle reversal in scyphozoan medusae, with possible implications for biological and ecological studies.

show abstract

“…Mechanically isolated, early stage medusa buds from gonozooids of Podocoryna carnea M. Sars can transform back into stolons or polyps ( Frey, 1968 ; Müller, 1913 ; Schmid, 1972 ). Comparable phenomena are also observed in other hydrozoans, such as Eleutheria dichotoma Quatrefages ( Hauenschild, 1956 ), Cladonema sp., Cladonema uchidai Hirai ( Kakinuma, 1969 ), and Laodicea undulate Forbes and Goodsir ( De Vito et al, 2006 ; Kubota, 2006 ). Since all of the above-mentioned species have the potential for reverse development, it has been suggested that ontogeny reversal is not a rare phenomena in cnidarians and might represent an adaptive response to adverse environments.…”

Section: Introductionmentioning

confidence: 99%

Ontogeny reversal and phylogenetic analysis of Turritopsis sp.5 (Cnidaria, Hydrozoa, Oceaniidae), a possible new species endemic to Xiamen, China

Guo

et al. 2018

PeerJ

View full text Add to dashboard Cite

Ontogeny reversal, as seen in some cnidarians, is an unprecedented phenomenon in the animal kingdom involving reversal of the ordinary life cycle. Three species of Turritopsis have been shown to be capable of inverted metamorphosis, a process in which the pelagic medusa transforms back into a juvenile benthic polyp stage when faced with adverse conditions. Turritopsis sp.5 is a species of Turritopsis collected from Xiamen, China which presents a similar ability, being able to reverse its life cycle if injured by mechanical stress. Phylogenetic analysis based on both 16S rDNA and cytochrome c oxidase subunit I (COI) genetic barcodes shows that Turritopsis sp.5 is phylogenetically clustered in a clade separate from other species of Turritopsis. The genetic distance between T. sp.5 and the Japanese species T. sp.2 is the shortest, when measured by the Kimura 2-Parameter metric, and the distance to the New Zealand species T. rubra is the largest. An experimental assay on the induction of reverse development in this species was initiated by cutting medusae into upper and lower parts. We show, for the first time, that the two dissected parts have significantly different potentials to transform into polyps. Also, a series of morphological changes of the reversed life cycle can be recognised, including medusa stage, contraction stage I, contraction stage II, cyst, cyst with stolons, and polyp. The discovery of species capable of reverse ontogeny caused by unfavorable conditions adds to the available systems with which to study the cell types that contribute to the developmental reversal and the molecular mechanisms of the directional determination of ontogeny.

show abstract

Evidence of reverse development in Leptomedusae (Cnidaria, Hydrozoa): the case of Laodicea undulata (Forbes and Goodsir 1851)

Cited by 17 publications

References 24 publications

Gelatinous plankton: irregularities rule the world (sometimes)

Gelatinous plankton: irregularities rule the world (sometimes)

Life Cycle Reversal in Aurelia sp.1 (Cnidaria, Scyphozoa)

Ontogeny reversal and phylogenetic analysis of Turritopsis sp.5 (Cnidaria, Hydrozoa, Oceaniidae), a possible new species endemic to Xiamen, China

Contact Info

Product

Resources

About