• Korean Journal of Ichthyology
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• v.25 no.3
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• pp.149-156
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• 2013

Phylogenetic relationships and DNA polymorphism among local populations of two Korean gobiidae species: Boleophthalmus pectinirostris and Scartelaos gigas were investigated based on 12S and 16S mitochondrial DNA and mitochondrial cytochrome b DNA sequences. DNA polymorphisms of B. pectinirostris between Suncheon and Gunsan populations were 100% identity from 434 bp segment of 12S rRNA gene and from 444 bp segment of mitochondrial cytochrome b genes, and 99.6% (2 bp different) identity from 484 bp segments of 16S rRNA genes. These results indicated the long period of geographic isolation between two populations of B. pectinirostris in Korea caused such high degrees of DNA polymorphisms. Based on the phylogenetic tree constructed from the two gobiid species in Korea, two genetically distinct groups of B. pectinirostris and S. gigas groups were recognized.

• Korean Journal of Ichthyology
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• v.4 no.1
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• pp.96-104
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• 1992

The electrophoretic analysis, variations of protein and nucleic acid contents with sexual maturation, of the liver tissue of male, and of the muscle tissue of male and female B. pectinirostris(Linnaeus) were investigated. As the result of protein analysis of the liver and muscle tissue of male by the SDS-PAGE electrophoretic analysis, the protein of the liver tissue of male was presented 15.8-101.5kd in molecular weight, and appeared 19 bands in all. The protein bands of the muscle tissues of male and female were almost same, their bands were presented 16.9-116.5kd in molecular weight, and appeared 23 bands in all. And in the liver tissue, the protein contents of the liver tissue of male appeared the maximum in June(the mature stage) and afterwards decreased gradually in July(the spawning stage) and August(the degenerative stage). In the muscle tissues of male and female protein contents were shown the maximum in June, and afterwards decreased gradually, the minimum in July, increased a little in August. The total RNA contents of the liver tissue of male, and their contents of the muscle tissue of male and female appeared the maximum in June(the mature stage), and afterwards decreased gradually in July(the spawning stage) and August(the degenerative stage).

• Korean Journal of Ichthyology
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• v.28 no.2
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• pp.87-92
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• 2016

The feeding habits of Boleophthalmus pectinirostris were studied using 198 specimens collected monthly from April 2014 to March 2015 in the intertidal zone of Beolgyo, Korea. The size of B. pectinirostris ranged from 6.5 to 18.7 cm in total length (TL, cm). B. pectinirostris was herbivore that consumes mainly centric and pennate diatoms. Its diets also included small quantities of Prorocentrum dinoflagellates. and nematods. B. pectinirostris predominantly consumed diatoms (mainly Pleurosigma spp., Navicula spp., Nitzschia spp., Gyrosigma spp.) in all fish size classes, and all months, and thus there were no significant diet changes in relation to size and month.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.10a
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• pp.264-265
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• 2002

짱뚱어 (Boleophthalmus pectinirostris)는 망둑어科(Gobiidae), 짱뚱어속 (Boleophthalmus)의 어류로서 일본, 중국, 미얀마, 말레이반도, 동남아시아, 한국의 서해 남부해역인 전남 영암, 신안, 장흥, 벌교, 강진 등의 갯벌이 발달한 곳에 대표적인 저서생물(김 등, 2001)로 부착 규조류(Pleurosigma spp.) 등을 섭이한다(야전ㆍ고하, 1990a; 유 등, 1995). 무분별한 갯벌의 매립, 각종 환경오염, 산란기 동안 산란소의 파괴 등으로 자원량이 급격히 감소되었고, 수요가 급증함에 따라 자원의 합리적인 관리가 현안 과제가 되었다. (중략)

• Korean Journal of Ichthyology
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• v.23 no.3
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• pp.250-254
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• 2011

Modified organs for air respiration in Korean fish was reviewed in the following 6 Korean fishes: three mudskippers (Boleophthalmus pectinirostris, Periophthalmus modestus and P. magnuspinnatus), two mud loaches (Misgurnus mizolepis and M. anguillicaudatus), and a torrent catfish (Liobagrus mediadiposalis). Three mudskippers and a torrent catfish have a modified epidermis to in order to make up for the deficient oxygen supply. Their epidermis has abundant intraepithelial blood capillaries except dermal capillaries situated just beneath the stratum germinativum of the epidermis in B. pectinirostris. The epidermis was thick due to component of the following cells: two kinds of glands as a small mucous cells and a large club cells in L. mediadiposalis, voluminous cells (swollen cells) swollen by epidermal cells and a small mucous cells in B. pectinirostris, and only voluminous cells having no any glandular cells in P. modestus and P. magnuspinnatus. In Particular, the epidermis of the mudskippers appears to be a web-like structure due to the swollen epithelial cells. The dermal bulges are found in B. pectinirostris and they are situated at the skin covering the body, not appendage of all the fins and the sucking disc. Another modified organ in M. mizolepis and M. anguillicaudatus occurs in intestine and its mucosal epithelium has abundant blood capillaries.

• Proceedings of the Korean Society of Developmental Biology Conference
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• 1998.07a
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• pp.24-24
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• 1998

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.6
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• pp.1341-1345
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• 2005

Sequential Monte Carlo techniques are a set of powerful and versatile simulation-based methods to perform optimal state estimation in nonlinear non-Gaussian state-space models. We can use Monte Carlo particle filters adaptively, i.e. so that they simultaneously estimate the parameters and the signal. However, Sequential Monte Carlo techniques require the use of special panicle filtering techniques which suffer from several drawbacks. We consider here an alternative approach combining particle filtering and Sequential Hybrid Monte Carlo. We give some examples of applications in fisheries(luespotted mud hopper data).

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.552-553
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• 2006

• Korean Journal of Fisheries and Aquatic Sciences
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• v.28 no.3
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• pp.316-324
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• 1995

Ecology and life History of the mudskipper, Boieophthaimus pectinirostris were investigated based on the specimens collected from the Korean roasts from 1978 to 1994. The spawning of this species takes place during the period from June to August. Prolarva hatched from egg was 3.3mm in total length, and began to bottom life in TL 16.0mm of 40 days after hatching. The stomach contents were principally diatoms. In the foraging behavior, this species were conducted at the wet soft mud on the upper tidal zones. The burrowing observed in the intertidal mud flat was YL type. B. pectinirostris is restricted to western and southwestern coast of Korea, but their habitats and individuals are being reduced by the result of reclimation to tide land.

• Korean Journal of Ichthyology
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• v.26 no.4
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• pp.281-287
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• 2014

An olfactory organ in Scartelaos gigas, so-called mudskipper known as adaptation to an amphibious lifestyle, was investigated anatomically and histologically. S. gigas possessed the paired olfactory organ comprising respectively the one elongated canal and two nasal sacs, lacrimal and ethmoidal nasal sac. The sensory epithelium developed partly in the canal contained four distinct types of cells: (1) receptor cell with 3 to 4 cilia in number, (2) supporting, (3) basal, (4) mucus cell. The sensory epithelium was also of transitional layer as multi cellularity structure. The non-sensory epithelium had no sensory elements. The two nasal sacs possessed typically a lot of mucin droplets. These results might be considered that anatomical structure and histological characters of the olfactory organ showing in S. gigas is adapted to semi-aquatic life associated with its ecological habit and habitat.