Morphological Description of Pedunculate Barnacle Octolasmis angulata (Aurivillius, 1894) on Wild Mud Crab Genus Scylla from Setiu Wetland, Terengganu Coastal Water, Malaysia

Ihwan, M. Z.; Ikhwanuddi, M.; Marina, H.

doi:10.3923/jfas.2014.366.371

Cited by 10 publications

(11 citation statements)

References 2 publications

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“…The site of barnacle attachment and number of individual barnacle on each crab found on the external area were recorded. The barnacles were fixed and preserved in 70% alcohol (Ihwan et al, 2014). The barnacles were mounting using glycerine jelly to make a permanent slide.…”

Section: Octolasmis Spp Site Specificitymentioning

confidence: 99%

“…The carapace was removed gently by using forceps for allowing the inspection of barnacle on the internal area (Kumaravel et al, 2009). The gills were divided to left and right by followed method by Ihwan et al, (2014). It was labeled as G1 until G8 (Figure 1).…”

Section: )mentioning

confidence: 99%

“…The length and shape of calcareous plates were recorded. Barnacles have identified the species based on the description of the morphological characteristics by Ihwan et al, (2013Ihwan et al, ( , 2014 and Jeffries et al, (2005). The good conditions of Octolasmis spp.…”

Section: Identification Of Octolasmis Sppmentioning

confidence: 99%

“…Octolasmis angulata has different shape of calcareous plates with long shape. It has capitulum oval shape and partially calcified with 3 plate (Ihwan et al, 2014). Octolasmis warwickii by having 5 capitular plates, 2 scuta, 2 terga and a carina (Voris and Jeffries, 1997).…”

Section: Morphological Identification Of Octolasmis Spp Found On P mentioning

confidence: 99%

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Occurrence of Pedunculate Barnacle, Octolasmis spp. in Blue Swimming Crab, Portunus pelagicus [Tingkat Kejadian Pedunculate Barnacle, Octolasmis spp. pada Rajungan, Portunus pelagicus]

hasan

Aziz

Kismiyati

et al. 2019

JIPK

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Barnacles are symbiont and harm to the crabs when they are in large numbers. They will affect the respiration, normal activity and growth of the crabs. The prevalence, mean intensity and identification of pedunculate barnacle, Octolasmis spp. on blue swimming crab, Portunus pelagicus from the coastal area of Kuala Terengganu were studied. The site specificity of the different species of Octolasmis attached was examined. The crabs were measured and weight. The crabs were euthanized by put in ice until no movement. The Octolasmis were observed from the surfaces and gills or brachial chamber. The Octolasmis were observed from each gill. The prevalence and mean intensity was calculated. The Octolasmis were preserved in 70% alcohol and mounting using glycerine jelly to make the permanent slide. A total of all 13 crabs were infested by four species of Octolasmis which is 218 Octolasmis angulata, 191 Octolasmis warwickii, 16 Octolasmis tridens and 218 Octolasmis lowei. Octolasmis angulate showed the highest prevalence (84.62%) and lowest prevalence was O. lowei (23.08%) and O. warwickii (23.08%). The barnacles were attached to the gill, carapace, abdomen and also walking legs. Barnacle occurred most frequently on the gill part by having 371 (57.70%) barnacles compared to other areas, 272 (42.30%) barnacles. The distributions of barnacle in this study suggest distal areas are more susceptible in infestation by Octolasmis spp. However, they did not show site specificity on the gill areas because it depends on the water current.AbstrakBarnacle (teritip) adalah simbion yang dalam jumlah besar akan membahayakan kepiting. Teritip tersebut berpengaruh pada pernapasan, aktivitas normal dan pertumbuhan kepiting. Prevalensi, intensitas rata-rata dan identifikasi pedunculate barnacle, Octolasmis spp. pada rajungan, Portunus pelagicus dari daerah pesisir Kuala Terengganu telah diteliti. Kekhasan lokasi dari berbagai spesies Octolasmis telah diperiksa. Kepiting telah diukur dan ditimbang. Kepiting dieuthanasi dengan cara dimasukkan kedalam es sampai tidak bergerak. Octolasmis diamati dari permukaan tubuh dan insang (branchial chamber). Octolasmis diamati pada tiap insang. Prevalensi dan intensitas rata-rata dihitung. Octolasmis diawetkan dalam alcohol 70 % dan mounting menggunakan Jeli gliserin untuk membuat slide permanen. Semua kepiting 13 ekor telah terinfestasi oleh empat spesies Octolasmis, yaitu 218 Octolasmis angulata, 191 Octolasmis warwickii, 16 Octolasmis tridens dan 218 Octolasmis lowei. Octolasmis angulate menunjukkan prevalensi paling tinggi (84,62%) dan prevalensi paling rendah adalah O. lowei (23,08%) dan O. warwickii(23,08%). Teritip menyerang insang, karapas, abdomen dan juga kaki jalan.Teritip paling sering ditemukan pada bagian insang 371 ekor (57,70%) dibandingkan pada bagian lain, 272 ekor (42,30%). Distribusi teritip pada penelitian ini menunjukkan bahwa bagian distal lebih rentan mengalami infestasi Octolasmis spp. Namun, teritip tidak menunjukkan kekhasan lokasi pada daerah insang bergantung pada arus air.

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Section: Octolasmis Spp Site Specificitymentioning

confidence: 99%

Section: )mentioning

confidence: 99%

Section: Identification Of Octolasmis Sppmentioning

confidence: 99%

Section: Morphological Identification Of Octolasmis Spp Found On P mentioning

confidence: 99%

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Occurrence of Pedunculate Barnacle, Octolasmis spp. in Blue Swimming Crab, Portunus pelagicus [Tingkat Kejadian Pedunculate Barnacle, Octolasmis spp. pada Rajungan, Portunus pelagicus]

hasan

Aziz

Kismiyati

et al. 2019

JIPK

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“…The attached sites epibionts were recorded according to their location on the gill (counting from anterior to posterior) (Voris et al, 1994;Santos et al, 2000). Some specimens were stained with Neutral red mixed with 15% glycerin jelly for about five minutes and then transfer to modify glass slides instead of wooden slide (Humes and Gooding, 1964;Adday, 2013), this method is a modification of the method of Ihwan et al (2014a) which use glycerin jelly only (Pl. 1).…”

Section: Methodsmentioning

confidence: 99%

Record of the Barnacle Octolasmisangulata (Aurivillius, 1894) From the Gills of the Crab Portunus Segnis (Forskål, 1775) of Iraqi Marine Waters

Adday

Jassim

Al-Waely

2019

BINHM

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Ten blue swimming crabs Portunus segnis (Forskål, 1775) were collected from the north west of the Arabian Gulf off the Iraqi marine waters from October to November 2017 at 29ᵒ 37′ N to 48ᵒ 47′ E. The barnacle Octolasmis angulata (Aurivillius, 1894) was found on the gills of the present species of crab, the mean incidence of infestation was 30%, while the mean Intensity of infestation was 12.3. The barnacle have a long and slim shaped calcareous plate with the presence of carina and the absence of tergum, in addition to the elongated shape of carina and scutum. The current study represents the first record of the barnacle O. angulata in the Arabian Gulf.

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Infestation and morphological identification of the stalked epizoic barnacle Octolasmis on the blue crab Portunus pelagicus from the Red Sea

Khattab

2018

J. Ocean. Limnol.

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Morphological Description of Pedunculate Barnacle Octolasmis angulata (Aurivillius, 1894) on Wild Mud Crab Genus Scylla from Setiu Wetland, Terengganu Coastal Water, Malaysia

Cited by 10 publications

References 2 publications

Occurrence of Pedunculate Barnacle, Octolasmis spp. in Blue Swimming Crab, Portunus pelagicus <br><i>[Tingkat Kejadian Pedunculate Barnacle, Octolasmis spp. pada Rajungan, Portunus pelagicus]<i>

Occurrence of Pedunculate Barnacle, Octolasmis spp. in Blue Swimming Crab, Portunus pelagicus <br><i>[Tingkat Kejadian Pedunculate Barnacle, Octolasmis spp. pada Rajungan, Portunus pelagicus]<i>

Record of the Barnacle Octolasmisangulata (Aurivillius, 1894) From the Gills of the Crab Portunus Segnis (Forskål, 1775) of Iraqi Marine Waters

Infestation and morphological identification of the stalked epizoic barnacle Octolasmis on the blue crab Portunus pelagicus from the Red Sea

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