Preliminary taxonomic survey and molecular documentation of jellyfish species (Cnidaria: Scyphozoa and Cubozoa) in Malaysia
Scientific enqumes into jellyfish blooms and associated problems in Malaysia are often deterred by the lack of taxonomical and ecological studies. To date, only two scyphozoan jellyfish species have been documented from field surveysin Malaysian waters, whereas other four Malaysian scyphozoan and...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | en |
| Published: |
2016
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/16197/1/0001.pdf http://eprints.um.edu.my/16197/ |
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| Summary: | Scientific enqumes into jellyfish blooms and associated problems in Malaysia are often
deterred by the lack of taxonomical and ecological studies. To date, only two scyphozoan
jellyfish species have been documented from field surveysin Malaysian waters, whereas other
four Malaysian scyphozoan and two cubozoan jellyfish species have been mentioned in
toxicological studies, all of which their species identity were not verified. Thus,this study aimed
to document and to resolve the identification of jellyfish in Malaysia using morphology and
molecular DNA sequencing of COl, 16Sand ITS1 regions. Jellyfish specimens were collected
from 2008 to 2010 in the Straits of Malacca, South-China Sea and the Sulu-SulawesiSea. Ten
scyphozoan and two cubozoan species were recorded, which included eight species from
the order Rhizostomeae (Rhizostomatidae, Lobonematidae, Mastigiidae, Catostylidae and
Cepheidae), two species from Semaestomeae (Pelagiidae and Cyaneidae) and two species
from class Cubozoa; one from order Carybdeida (family Carukiidae) and another from order
Chirodropida (family Chiropsalmidae). TheCOl phylogenetic tree of Cubozoa and Scyphozoa
species from the Atlantic and Pacific region showed distinct clustering of sixMalaysian jellyfish
species. However, most of the deeper divergences and relationships between the families were
unresolved, which were also observed in the 16Sand ITS1 phylogenetic trees. The Malaysian
edible species Lobonemoides robustus, Rhopilema hispidum and Rhopilema esculentum were
proven to belong to Rhizostomeae, whereas other scyphozoans showed phylogenetic affinities
to Semaestomeae and Kolpophorae. Chrysaora and Cyan eo appeared non -monophyletic,
however their paraphyly was not confirmed. Although this study has provided much needed
baseline information on the barcoding of Malaysian jellyfish species, there isstilla general lack
of jellyfish sequences in GenBank to facilitate better species confirmation. |
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