Investigation of Parasites and Ecto-Symbiont in Wild Mud Crab, Genus Scylla from Terengganu Coastal Water, Malaysia: Prevalence and Mean Intensity

Ihwan, M. Z.; Wahidah, W.; Ambak, Mohd Azmi; Ikhwanuddin, Mhd; Marina, H.

doi:10.3923/ijzr.2015.151.159

Cited by 4 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parasite prevalence was calculated from the total number of infected samples divided by the number of samples examined. The prevalence of parasites was calculated using an equation that refers to [1]:…”

Section: • Prevalence Of Ectoparasitementioning

confidence: 99%

See 1 more Smart Citation

Study of Ectoparasite Prevalence and Intensity on Mud Crab (Scylla serrata) in Mangrove Area of Wonorejo Surabaya

Purna

Munir

Maisaroh

2021

mrcm

View full text Add to dashboard Cite

This study aims to know various types, prevalence, and intensity of ectoparasite on mud crab (Scylla serrata) in Mangrove Forest Wonorejo, Surabaya. This study used survey method with random sampling to collect the data. This study was conducted in November 2020. Ectoparasite in this study collected by smear method. In-situ water quality measurement were applied in this study. Mud crab (Scylla serrata) in this study was obtained from local fisherman that consist of 30 crabs. There are 3 types of ectoparasite was infected mud crab there are Octolasmis sp. (208 ind), Zoothamnium sp. (93 ind), dan Epistylis sp. (116 ind). Those ectoparasite was found in mud crabs gills. The highest prevalence was Octolasmis sp. (70%), Epistylis sp. (30%), Zoothamnium sp. (23%). The highest intensity was Zoothamnium sp (13,29 ind/crab), Epistylis sp. (12,89 ind/crab), dan Octolasmis sp. (9,90 ind/crab). Based on Ministerial Decree of Ministry Environment and Forestry No. 1 of 2004 water quality in Wonorejo Mangrove Forest was still optimal for life cycle of mud crab with average of temperature is 31,20°C, Dissolved Oxygen 5,53 mg/l, salinity 11 ppt, and pH 7,40.

show abstract

Section: • Prevalence Of Ectoparasitementioning

confidence: 99%

“…Scylla paramamosain is very often found in continental regions of the South China Sea to the South Java Sea. The four mangrove crab species are associated with another species in the same geographic area [1] To fulfill the supply of mangrove crab commodities in Indonesia generally rely on catches in nature.…”

Section: Introductionmentioning

confidence: 99%

Study of Ectoparasite Prevalence and Intensity on Mud Crab (Scylla serrata) in Mangrove Area of Wonorejo Surabaya

Purna

Munir

Maisaroh

2021

mrcm

View full text Add to dashboard Cite

show abstract

“…Thus far, parasites infecting mud crabs, especially S. olivacea, in Malaysian waters include ciliates, nematodes, copepods and barnacles (Octolasmis spp.). Being the most abundant among other parasites (71.1% prevalence) (Ihwan et al, 2015), Octolasmis barnacles are often found in the respiratory chambers of mud crabs (Jeffries et al, 1989) and pose minimal threat to their hosts as they do not feed on host tissues (Gannon and Wheatly, 1992). Recently, however, the occurrence of rhizocephalan barnacles Sacculina beauforti (Sacculinidae) on mud crab Scylla olivacea was reported, with a high prevalence rate of 42.27% (Waiho et al, 2017b).…”

Section: Introductionmentioning

confidence: 99%

Gonadal Degeneration and Hepatopancreas Alteration in Orange Mud Crab Scylla olivacea Infected With Sacculina beauforti (Crustacea; Rhizocephala; Sacculinidae)

et al. 2020

View full text Add to dashboard Cite

Infestation of Sacculina beauforti on an aquaculture species, mud crab Scylla olivacea is alarming due to its high prevalence and the extreme morphological changes in hosts. To further understand its pathological effect on growth and reproduction of S. olivacea, gonadal and hepatopancreatic histological changes of infected individuals were compared with healthy individuals. Also, the histological characteristics of S. beauforti's mature externa was described. Hepatopancreases of infected individuals were loosely packed and rootlets were observed in the intertubular spaces. Although hepatopancreatic tubule count was significantly lower, tubule diameters were unaffected. Gonads, however, were severely affected. No germ cells were found in the infected testes (except for remnants of spermatozoa), indicating the arrest of spermatogenesis. Rootlets were also present in testes of infected individuals. Ovarian tissues of infected females were severely damaged with no rigid cell structures. Gonadosomatic index (GSI) of infected males and females were lower, but the hepatosomatic index (HSI) were higher than their healthy counterparts. No significant differences in GSI and HSI values were observed among infected males and females. Multiple regression analysis revealed that carapace width, GSI and HSI are statistically important for the prediction of infection status. Given the high prevalence of S. beauforti infection and its disruptive effects on the morphology and internal physiology of S. olivacea, this study, albeit fundamental and incomprehensive, highlights to farmers and researchers the emergence of a castrating parasite and the urgency for the development of preventive measures and treatments for this disease in an economically important aquaculture species.

show abstract

ECTOPARASITES AND VIBRIOS ASSOCIATED WITH FATTENING CULTURED MUD CRABS [Scylla serrata (Forsskal, 1775)] FROM PEMALANG COAST, INDONESIA

et al. 2016

View full text Add to dashboard Cite

Infectious of ectoparasites and vibrios were found as a problem in fattening mud crab. The aims of this study were to determine the clinical sign of infected mud crabs and to identify the ectoparasites and generic vibrio in the fattening mud crabs from Pemalang Coast, Indonesia. Ectoparasites were collected by smear method. Whereas, 20 isolates were collected from hepatopancreas, gills, hemolymph and injured carapace of the mud crabs. Thiosulphate Citrate Bile Salt Sucrose (TCBS) medium was used to isolate suspected vibrios. The clinical signs of mud crabs infected by ectoparasites were shown through the damaged gills and the attachment of other organisms on the gills, whereas the clinical signs of mud crabs infected by vibriosis were shown through red spot on carapace and wound in carapace, claw and abdomen, followed by weak condition. It also indicated that seven ectoparasites were Ichthyobodo sp., Epistylis sp., Carchesium sp., Vorticela sp., Octolasmis sp., Lepeophtherius sp, and Copepodit sp., whilst five Vibrios were V. harveyi, V. Cholerae, V. parahaemolyticus, V. alginolyticus and V. fischeri.

show abstract

Investigation of Parasites and Ecto-Symbiont in Wild Mud Crab, Genus Scylla from Terengganu Coastal Water, Malaysia: Prevalence and Mean Intensity

Cited by 4 publications

References 21 publications

Study of Ectoparasite Prevalence and Intensity on Mud Crab (Scylla serrata) in Mangrove Area of Wonorejo Surabaya

Study of Ectoparasite Prevalence and Intensity on Mud Crab (Scylla serrata) in Mangrove Area of Wonorejo Surabaya

Gonadal Degeneration and Hepatopancreas Alteration in Orange Mud Crab Scylla olivacea Infected With Sacculina beauforti (Crustacea; Rhizocephala; Sacculinidae)

ECTOPARASITES AND VIBRIOS ASSOCIATED WITH FATTENING CULTURED MUD CRABS [Scylla serrata (Forsskal, 1775)] FROM PEMALANG COAST, INDONESIA

Contact Info

Product

Resources

About