SEM observation on the mouth tube and preoral sting of Argulus coregoni thorell and Argulus japonicus Thiele (Crustacea: Branchiura).

Shimura, Shigeru

doi:10.3147/jsfp.18.151

Cited by 14 publications

(6 citation statements)

References 7 publications

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“…In the current study two axon-like (Ax) structures were found within the spine duct epithelium. The presence of these axons supports the results of Gresty et al [14] and hypothesis of Shimura [12] that the other pore at the tip of the pre-oral spine functions as a chemoreceptor. Large elongated nuclei were also observed by Gresty et al [14] with clear dense nucleoli, but these latter were rarely seen in the current study, likely due to the parasite orientation during embedding and the depth of sectioning.…”

Section: Accepted Manuscriptsupporting

confidence: 90%

“…In this study, the origin of the duct was found to be integrated with glandular tissue at the base of the spinal sheath. By analysing scanning electron micrographs of the pre-oral spine on the ventral side Gresty et al [14]were able to describe the spine pores; spine duct and subterminal pore, which is not connected to the dorsal tube, previously assumed by Shimura [12] to be a chemosensory pore. Gresty et al [14] also found axon-like structures within the epithelium around the base of the spine duct.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Although previous published studies have provided information focused on glands related to the pre-oral spine and mouth tube [9,[12][13][14][15], the available information remains limited and no conclusive data are available regarding the host-parasite interactions involving these glands.…”

Section: Introductionmentioning

confidence: 99%

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Histological and histochemical characterisation of glands associated with the feeding appendages of Argulus foliaceus (Linnaeus, 1758)

AmbuAli

Monaghan

Al-Adawi

et al. 2019

Parasitology International

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Argulus foliaceus (Linnaeus, 1758) is a member of the branchiuran family Argulidae, a group comprising parasitic "fish lice". A. foliaceus is distributed worldwide and causes major economic impacts for cultured freshwater fish globally. The work described in this study was undertaken with the objective of identifying, describing and characterising glands associated with feeding in A. foliaceus. From structural and ultrastructural microscopic studies of A. foliaceus, three types of gland were determined to be associated with the pre-oral spine and mouth tube and were suggested to be involved in feeding activities. Two of these glands, the labial glands and the proboscis glands, appeared to secrete their products via the mouth tube and a third, the spinal gland, was connected directly to the pre-oral spine. The current study confirmed that the pre-oral spine delivers active secretions from the spinal gland, which may aid in immunomodulation, while the tubular labial spines and proboscis glands openings within the mouth tube may serve to enhance the feeding process by delivering salivary components to aid pre-digestion and immune-modulate the host. The suggested functions are supported by histological and histochemical staining, coupled with fluorescent lectin-binding assays, which enabled characterisation of the carbohydrate moieties associated with these glandular tissues.

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Section: Accepted Manuscriptsupporting

confidence: 90%

Section: Accepted Manuscriptmentioning

confidence: 99%

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Histological and histochemical characterisation of glands associated with the feeding appendages of Argulus foliaceus (Linnaeus, 1758)

AmbuAli

Monaghan

Al-Adawi

et al. 2019

Parasitology International

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“…Argulus quadristriatus bears only one posterior spine on the proximal segment of antennule in both sexes and thereby differs from five of the above species (A. caecus, A. kusafugu, A. matuii, A. onodai, A. scutiformis), which carry two posterior spines, as well as from A. lepidostei, which lacks any posterior spines (see Kellicott 1877;Wilson 1902Wilson , 1916Wilson , 1922Thiele 1904;Tokioka 1936;Sikama 1938;Yamaguti and Yamasu 1959). Argulus americanus, A. coregoni, and A. japonicus differ from A. quadristriatus in having no spines or scales on the basal half of the mouthtube (vs. ornamented with scale-like spines) (see Tokioka 1936;Wang 1958;Yeatman 1965;Cressey 1972;Shimura 1983;Shimura and Asai 1984). According to , several unidentified species of the genus Argulus reported from Japanese waters were probably A. coregoni, A.…”

Section: Discussionmentioning

confidence: 99%

First Record of the Fish Louse Argulus quadristriatus (Branchiura: Arguloida: Argulidae) from Japanese Waters, with Three New Host Records

2017

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An argulid branchiuran, Argulus quadristriatus Devaraj and Ameer Hamsa, 1977, is reported on the basis of specimens of both sexes isolated from two species of goatfish [Upeneus tragula Richardson, 1846 and Parupeneus ciliatus (Lacepède, 1802) (Perciformes: Mullidae)] and the goby Favonigobius reichei (Bleeker, 1854) (Perciformes: Gobiidae) collected in Kagoshima Bay and off both the east and west coasts of Okinawa-jima island, southern Japan. The branchiuran is easily distinguished from its nine previously recorded congeners in Japanese waters by the presence of one posterior spine on the antennule and scales ornamenting the basal half of the mouthtube. These are the first records of this branchiuran from the North Pacific Ocean including Japanese waters, and the three fish species mentioned above are new hosts for it.

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“…Moreover, the male specimens consisted of individuals of 5.3-8.1 mm in body length (Fig. 2), and Shimura & Egusa (1980, reported as O. masou), Shimura (1981Shimura ( , 1983aShimura ( , 1983b, Shimura et al (1983aShimura et al ( , 1983b, Shimura & Inoue (1984, reported as O. masou) 4 Oncorhynchus mykiss Shimura & Egusa (1980, reported as Salmo gairdneri), Shimura (1981Shimura ( , 1983a, reported as S. gairdneri), Shimura et al (1983b, reported Oncorhynchus mykiss Uno et al (1975), Ishii et al(1978 9…”

mentioning

confidence: 97%

The fish louse Argulus coregoni from Oncorhynchus masou ishikawae (Salmonidae) cultured in Shikoku, western Japan, with a list of occurrence records of A. coregoni from fishes reared in Japan

Nagasawa

Yuasa

2019

Crust Res

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Argulus coregoni Thorell, 1864 is briefly described based on specimens from the body surface of amago salmon, Oncorhynchus masou ishikawae Jordan & McGregor, 1925, cultured at a trout farm in Tokushima Prefecture, Shikoku, western Japan. This represents the first confirmed record of A. coregoni from farmed salmonids in Shikoku. A list of occurrence records of A. coregoni from fishes reared in Japan is also provided based on the literature published between 1950 and 2019. The species has so far been reported from three species and two subspecies of salmonids and one species of plecoglossid reared at 14 sites in 10 prefectures (Tochigi, Tokyo, Nagano, Ishikawa, Gifu, Aichi, Wakayama, Hyogo, Tokushima, and Yamaguchi). Most of these sites were governmental or research facilities, and it is evident that little attention has been paid to A. coregoni at commercial tout farms. The species is considered to occur at more trout farms in Japan.

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SEM observation on the mouth tube and preoral sting of Argulus coregoni thorell and Argulus japonicus Thiele (Crustacea: Branchiura).

Cited by 14 publications

References 7 publications

Histological and histochemical characterisation of glands associated with the feeding appendages of Argulus foliaceus (Linnaeus, 1758)

Histological and histochemical characterisation of glands associated with the feeding appendages of Argulus foliaceus (Linnaeus, 1758)

First Record of the Fish Louse <i>Argulus quadristriatus</i> (Branchiura: Arguloida: Argulidae) from Japanese Waters, with Three New Host Records

The fish louse <i>Argulus coregoni</i> from <i>Oncorhynchus masou ishikawae</i> (Salmonidae) cultured in Shikoku, western Japan, with a list of occurrence records of <i>A. coregoni</i> from fishes reared in Japan

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