Updated descriptions of the nematocysts of the scyphozoan jellyfish Cyanea nozakii Kishinouye, 1891 (Cnidaria, Scyphozoa)

Yue, Yang; Xue, Wei; Yu, Huan; Li, Rongfeng; Li, Pengcheng

doi:10.1016/j.toxicon.2020.09.016

Cited by 3 publications

(3 citation statements)

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“…The common, typical, elongated b-mastigophore and p-mastigophore nematocysts of actiniarian species (Östman, 2000 e.g., Figure 2;Östman et al, 2010a,b), or the shorter, less common hydrozoan b-mastigophores (Östman, 1989, e.g., Figure 3) have to date not been identified in scyphozoans. However, Yue et al (2020) reported b-mastigophores within the jellyfish Cyanea nozakii, which we, based on their tubule pattern and lost spines, doubt are similar to the common actiniarian and hydrozoan b-mastigophores. Avian et al (2016) (e.g., Figure 10H) described a new nematocyst, a possible p-mastigophore, for the Mediterranean jellyfish Mawia benovici (Pelagiidae), previously described as Pelagia benovici [Piraino et al, 2014; WoRMS (World Register of Marine Species), 2020].…”

Section: Confirmingmentioning

confidence: 61%

Cnidome and Morphological Features of Pelagia noctiluca (Cnidaria: Scyphozoa) Throughout the Different Life Cycle Stages

et al. 2021

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Pelagia noctiluca is considered the most important jellyfish in the Mediterranean Sea, due to its abundance and the severity of its stings. Despite its importance in marine ecosystems and the health problems caused by its massive arrival in coastal areas, little is known about its early life stages and its cnidome has never been described. This study of the morphological and anatomical features throughout the life cycle identifies four early stages: two ephyra and two metaephyra stages. Ephyra stage 1, newly developed from a planula, has no velar canals, gastric filaments or nematocyst batteries. Ephyra stage 2, has velar canals, a cruciform-shaped manubrium and gastric filaments. Metaephyra stage 3 has eight tentacle buds and nematocyst clusters for the first time. Lastly, in metaephyra stage 4, the eight primary tentacles grow nearly simultaneously, with no secondary tentacles. Complete nematocyst battery patterns gradually develop throughout the later life stages. Four nematocyst types are identified: a-isorhiza, A-isorhiza, O-isorhiza and eurytele. Of these, a-isorhiza and eurytele are the most important throughout the entire life cycle, while A-isorhiza and O-isorhiza have a more important role in advanced stages. All nematocysts show a positive correlation between increasing capsule volumes and increasing body diameter of the ephyrae, metaephyrae, young medusae and adult medusae. In the early stages, the volumes of euryteles in the gastric filaments are larger than those in the exumbrella, indicating that the capsule volume is critical in the absence of marginal tentacles, specialized for feeding. This study provides updated information, the most extensive description to date, including high-resolution photographs and schematic drawings of all the developmental stages in the life cycle of P. noctiluca. Additionally, the first cnidome characterization is provided for each stage to facilitate accurate identification of this species when collected in the water column, and to raise awareness of the potential for human envenomation.

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Section: Confirmingmentioning

confidence: 61%

Cnidome and Morphological Features of Pelagia noctiluca (Cnidaria: Scyphozoa) Throughout the Different Life Cycle Stages

et al. 2021

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“…Cnidae adalah organ-organ sel penyengat dari fauna-fauna filum Cnidaria yang terdapat dalam jaringan tubuh terluarnya (ektodermis), dan melepaskan tangkai atau benang dari kapsulnya, keluar dari jaringan ektodermisnya ketika ada ancaman dari lingkungan sekitarnya (Watson dan Wood, 1988;Paruntu, 2000;Yue, et. al., 2020).…”

Section: Pendahuluanunclassified

NEMATOSIT KARANG Montipora undata (SCLERACTINIA) DARI PANTAI MALALAYANG TELUK MANADO

Kodoati

Paruntu

2021

JPLT

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The aim of this study was to know the nematocysts composition of Montipora undata (Scleractinia) which was collected in the Malalayang coastal coral reef, Manado Bay. This research was conducted for three months, from October to December 2020. Observation of nematocysts was done under an Olympus CX41 microscope with a magnification of x100 objective lens connected to a computer equipped with the application of Optica view 7 at the Laboratory of Fish Health, Environment and Toxicology, Faculty of Fisheries and Marine Sciences, UNSRAT. The results showed that M. undata had the main nematocyst composition, namely microbasic b-mastigophore (MbM) of 60.0 %, small microbasic p-mastigophore type II (sMpM-II) 26.67 %, small holotrichous isorhiza (sHI) 6 ,67 %, large holotrichous isorhiza (lHI) 4.44 %, and large microbasic p-mastigophore type II (lMpM-II) 2.22 %. MbM is the dominant type of nematocyst for this coral species. Further studies are suggested to investigate the function of MbM and morphology of nematocysts of various types of corals in the genus Montipora.Keywords: Composition, Manado Bay, Montipora undata, nematocyst, Scleractinia

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“…Cnidarian adalah sebuah filum yang mempunyai sel penyengat dalam jaringan tubuh ektodermisnya, yang disebut cnidae. Sel cnidae ini dapat melepaskan tangkai dan atau benang beracun dari kapsul dan keluar dari tubuh karang untuk menyerang mangsa atau predator di lingkungan sekitarnya (Paruntu, 2000;Yue, et. al.…”

Section: Pendahuluanunclassified

KOMPOSISI NEMATOSIT KARANG FUNGIA, Cycloseris vaugani DARI TERUMBU KARANG PANTAI MALALAYANG, MANADO

Sagrang

Paruntu

Wagey

et al. 2021

JPLT

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The purpose of this study was to determine the composition of nematocysts in the body tissue of the coral fungia, C. vaugani. The location for the collection of C. vaugani colonies was on the coral reefs of the Malalayang coastal area, Manado. This research was carried out in September - December 2020. The observation of nematocysts of C. vaugani was carried out using an Olympus CX41 microscope with a magnification of x100 objective lens which connected to a computer monitor equipped with an optical view 7 application at the Fish Health Environment and Toxicology Laboratory, Faculty of Fisheries and Marine Science, UNSRAT. The present results showed that C. vaugani had a composition of nematocysts, namely type I microbasic p-mastigophore (MpM-I) of 40.00%, small type II microbasic p-mastigophore (sMpM-II) of 31.11%, small holotrichous isorhizas (sHI) of 24.44 %, large type II microbasic p-mastigophore (lMpM-II) of 2.22%, and large holotrichous isorhizas (IHI) of 2.22%. sMpM-II is the most dominant nematocyst type of C. vaugani and this type of nematocyst is thought to be used by coral for aggression and killing prey or predator if there is disturbance from the surrounding aquatic environment where the coral lives. Further research is recommended to study the types and morphology of nematocyst from various species of coral fungia, including C. vaugani to understand the differences in their types and dimension of the nematocyst. Keywords: Composition, Cycloseris vaugani, Fungia, Manado, nematosit

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Updated descriptions of the nematocysts of the scyphozoan jellyfish Cyanea nozakii Kishinouye, 1891 (Cnidaria, Scyphozoa)

Cited by 3 publications

References 45 publications

Cnidome and Morphological Features of Pelagia noctiluca (Cnidaria: Scyphozoa) Throughout the Different Life Cycle Stages

Cnidome and Morphological Features of Pelagia noctiluca (Cnidaria: Scyphozoa) Throughout the Different Life Cycle Stages

NEMATOSIT KARANG Montipora undata (SCLERACTINIA) DARI PANTAI MALALAYANG TELUK MANADO

KOMPOSISI NEMATOSIT KARANG FUNGIA, Cycloseris vaugani DARI TERUMBU KARANG PANTAI MALALAYANG, MANADO

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