Ching-Long Lin

Species of Caligus Müller, 1785 (Copepoda: Caligidae) parasitic on marine fishes of Taiwan.

Six species of copepods of the genus Caligus (Caligidae, Siphonostomatoida) parasitic on marine fishes of Taiwan are reported. They are: C. absens n. sp. from Priacanthus blochii and P. macracanthus; C. epinepheli Yamaguti, 1936 from Scolopsis vosmeri; C. kanagurta Pillai, 1961 from Decapterus kurroides; C. laticaudus Shiino, 1960 from Lutjanus vitta and Parapristiopoma trilineatum; C. nengai Rangnekar, Rangnekar & Murti, 1953 from Triacanthus biaculeatus; and C. rotundigenitalis Yü, 1933 from Drepane punctata, Liza macrolepis and Terapon jarbua. C. distortus Pillai & Natarajan, 1977 is relegated to a synonym of C. nengai and C. multispinosus Shen, 1957 reported by Lin et al. (1994) from the cultured sea bream Acanthopagrus schlegeli is a misidentification for C. rotundigenitalis Yü, 1933.

Developmental stages of Caligus epidemicus Hewitt, a copepod parasite of tilapia cultured in brackish water

The larval development of Caligus epidemicus comprises ten stages: two nauplii, one copepodid, six chalimus, and one preadult (young adult) stages. The morphology of each of these ten instars is described based on material reared from eggs in the laboratory. Addition of fifth and sixth chalimus stages in the ontogeny of C. epidemicus is discussed in the light of the developmental changes in the leg armature. Some peculiarities about the structure of the frontal filament in various chalimus stages are also discussed.

Development of Caligus multispinosus Shen, a caligid copepod parasitic on the black sea bream (Acanthopagrus schlegeli) cultured in Taiwan

The development of Caligus multispinosus was studied using instars reared from eggs in the laboratory and specimens obtained from the gills of pond-cultured black sea bream. Nine stages were identified, namely, two nauplii, one copepodid, four chalimus stages, one preadult and the adult. The distinctive feature of the spinulose outer spines on leg 4 appeared late in development (preadult stage) and the frontal filament produced in chalimus I is kept throughout the chalimus stages.

A revision of the family Dissonidae Kurtz, 1924 (Copepoda: Siphonostomatoida)

Two new species of the parasitic copepod genus Dissonus Wilson, 1906 are described: D. excavatus n. sp. from the gills of a labrid, Bodianus perditio, and a lutjanid, Macolor niger, collected off New Caledonia and Taiwan, and D. inaequalis n. sp. from a hemiscylliid elasmobranch, Chiloscyllium punctatum, collected off Sarawak (Malaysia) and the Philippines. Material of D. heronensis Kabata, 1966 is described from a balistid host, Pseudobalistes fuscus, off New Caledonia, and this constitutes a new host record for this parasite. D. manteri Kabata, 1966 was collected from four serranid host species off New Caledonia and from one of the same hosts off Taiwan. Two of the hosts from New Caledonia, Plectropomus laevis and Epinephelus cyanopodus, represent new host records. D. pastinum Deets & Dojiri, 1990 was recognised as a new synonym of D. nudiventris Kabata, 1966, so the total number of valid species is now twelve. Material from museum collections of D. nudiventris, D. similis Kabata, 1966 and D. spinifer Wilson, 1906 was re-examined and provided new information which is utilised in a key to all valid species of Dissonus.

Six Species of Lernanthropid Copepods (Siphonostomatoida) Parasitic on Marine Fishes of Taiwan

Six species of lernanthropid copepods (Siphonostomatoida: Lernanthropidae) parasitic on marine fishes of Taiwan are reported in this paper. They are: Lernanthropinus sphyraenae (Yamaguti & Yamasu, 1959) from the moonfish Mene maculata (Bloch & Schneider, 1801); Lernanthropsis mugilii (Shishido, 1898) from the flathead mullet Mugil cephalus Linnaeus, 1758; Lernanthropus otolithi Pillai, 1963 from the pawak croaker Pennahia pawak (Lin, 1940); Lernanthropus pomadasysis Rangnekar & Murti, 1961 from the javelin grunter Pomadasys kaakan (Cuvier, 1830); Norion priacanthi (Kirtisinghe, 1956) from the red bigeye Priacanthus macracanthus Cuvier, 1829; and Sagum vespertilio Kabata, 1979 from the spangled emperor Lethrinus nebulosus (Forsskal, 1775). All six species are new to the waters of Taiwan and three of them, L. otolithi, L. pomadasysis and N. priacanthi are also new to the Pacific Ocean. In this paper Sagum tuberculatum Pillai, 1985 is relegated to the junior synonym of Sagum vespertilio Kabata, 1979 and Lernanthropus pomadasysis Rangnekar & Murti, 1961 is resurrected from the synonymy with Lernanthropus abitocephalus Tripathi, 1962.

Four species of Caligus Müller, 1785 (Copepoda, Siphonostomatoida, Caligidae) parasitic on marine fishes of Taiwan

Four species of Caligus, with two new species, are reported from five species of marine fishes of Taiwan. They are: Caligus arii Bassett‐Smith, 1898 on the body surface of Trichiurus lepturus Linnaeus, Caligus dasyaticus Rangnekar, 1957 on the body surface of Dasyatis navarrae (Steindachner), Caligus dactylus n. sp. on the gill filaments of Dactyloptera peterseni (Nyström), and Caligus lutjani n. sp. in the oral/gill cavities of Lutjanus argentimaculaltus (Forsskål) and Lutjanus bohar (Forsskål). Both C. arii and C. dasyaticus are reported for the first time from Taiwan. Caligus dactylus differs from its congeners by the possession of the following combination of features: large myxal process on the maxilliped; a pair of parallel tines on the sternal furca with truncate tip; simple elements (without accessory process) at the tip of leg 1 exopod; and an armature formula of I‐0; I,III on leg 4. Caligus lutjani is distinguished by carrying a two‐segmented abdomen; a pair of diverged tines on the sternal furca with acute tip; an accessory process on the middle two of the terminal four elements on the exopod of leg 1; and a bipectinate, spiniform process on the exopod of leg 4 at the insertion of each of the five outer spines.

Sea Lice(Copepoda,Caligidae)Parasitic on Pelagic Fishes of Taiwan

Four species of Caligus (Copepoda, Caligidae) are recorded for the first time from Taiwan on six species of offshore, pelagic fishes caught off the west coast. They are: C. asymmetricus Kabata,1965 from bullet tuna, Auxis rochei (Risso), and kawakawa, Euthyn-nus affinis (Cantor); C.bonito Wilson,1905 from kawakawa and skipjack tuna, Katsu-wonus pelamis (Linnaeus); C. productus Dana, 1854 from skipjack tuna, rainbow runner, Elagatis bipinnulata (Quoy and Gaimard), and shrimp scad, Alepes djedaba(Forsskal); and C. quadratus Shiino, 1954 from common dolphinfish, Coryphaena hippurus (Linnaeus). Russells snapper, Lutjanus russellii (Bleeker), was also found to carry a female C. quadratus. However it is considered to be a fortuitous host.

Three Species of Lernanthropus de Blainville, 1822 (Copepoda, Lernanthropidae) Parasitic on Marine Fishes of Taiwan

Three species of Lernanthropus de Blainville, 1822 (Copepoda, Lernanthropidae) were found parasitic on nine species of marine food fishes landed at various fishing ports in Taiwan. They are: L. cadenati Delamare-Deboutteville and Nunes-Ruivo, 1954 from the Indo-Pacific tarpon, Megalops cyprinoides (Broussonet, 1782), and the tenpounder, Elops machnata (Forsskal, 1775); L. chrysophrys Shishido, 1898 from three species of seabream: Acanthopagrus berda (Forsskal, 1775), A. latus (Houttuyn, 1782), and A. schlegelii (Bleeker, 1854); and L. cornutus Kirtisinghe, 1937 from four species of needlefish, Ablennes hians (Valenciennes, 1846), Strongylura leiura (Bleeker, 1850), Tylosurus acus melanotus (Bleeker, 1850), and T. crocodiles crocodiles (Peron and Lesueur, 1821). These parasites are reported for the first time from the marine fish of Taiwan.

Poecilostomatoid Copepods Parasitic in Bivalve Mollusks of Taiwan

Three species of poecilostomatoid copepods parasitic in bivalve mollusks of Taiwan were described. They are: Ostrincola simi/is sp. nov. from the cultured oyster, Crassostrea gigas (Thunberg), and green mussel, Perna viridis (Linnaeus), attached to this species of oyster; Myicola formosanus sp. nov. from the circular clam, Cyclina sinensis (Gmelin); and Anthessius mytilicolus Reddiah, 1966 from the green mussels attached to the cultured C. gigas. This is the first report of parasitic copepods from the bivalve mollusks of Taiwan.

The First Occurrence of the Paedomorphic Derivative Hydrozoan Eugymnanthea (Leptomedusae, Eirenidae) from Taiwan, with a Report of a New Host

A bivalve-inhabiting hydrozoan Eugymnanthea japonica was found for the first time in Taiwan as the southernmost population of this species in the world. In Taiwan E. japonica is associated with Crassostrea gigas and Perna viridis. The association with P. viridis is the first report, though the association rate is very low. The morphology of E. japonica, particularly the mature medusae of the present material is described and illustrated.