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Two New Species of the Genus Haliclona from Korea
Hyung June Kim1, Dong Won Kang
1Department of Taxonomy and Systematics, National Marine Biodiversity Institute of Korea, Seocheon 33662, Korea. user@example.com.
Abstract:
Two new marine sponges, Haliclona (Reniera) oceanus sp. nov. and Haliclona (Reniera) juckdoensis sp. nov. of the family Chalinidae were collected from Ieodo Ocean Research Station, Ulleung-do Island, Korea by SCUBA in 2016-2017. Morphologically distinct from each other, both species are assigned to the genus Haliclona subgenus Reniera. Haliclona (Reniera) oceanus sp. nov. is similar to H. (H.) ieoensis Kim et al. 2017 in shape, habitat, growth form, but it differs in color, ectosomal, choanosomal skeleton and spicule size. Haliclona (Reniera) juckdoensis sp. nov. is similar to H. (R.) hongdoensis Kang and Sim 2007 in habitat, ectosomal, choansomal skeleton but it differs in spicule size.
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Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.
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