Bothus

Abstract: Four new species of Ceratomyxa Thelohan, 1892 are described from the gall bladders of fishes collected off Lizard Island, Australia. These species are characterised using a combination of morphometric and molecular data. Ceratomyxa bartholomewae sp. n. is described from Hyporhamphus dussumieri (Valenciennes) (family Hemirhamphidae); C. koieae sp. n. is described from Sphyraena forsteri Cuvier (family Sphyraenidae); C. pantherini sp. n. is described from Bothus pantherinus (Ruppell) (family Bothidae) and C. reidi sp. n. is described from Chaetodon vagabundus Linnaeus (family Chaetodontidae). A fifth species from Zebrasoma veliferum (Bloch) (family Acanthuridae) is also reported but due to limited material is not formally described here.

Abstract: RESUMEN. Se comunican los primeros registros de los Pleuronectiformes Achirus klunzingeri (Soleidae), Etropusectenes y Bothus constellatus (Bothidae) y Symphurus elongatus (Cynoglossidae) en aguas de chilenas. Las caracteris-ticas morfologicas de los especimenes estudiados se confrontan con descripciones previas. Se discute su distribucionen el Pacifico sur oriental y aquella del orden en aguas chilenas. Palabras claves: Pleuronectiformes, nuevos registros, Etropus ectenes , Bothus constellatus , Achirus klunzingeri , Symphurus elongatus , norte de Chile. First records of Etropus ectenes Jordan, 1889, Bothus constellatus Jordan & Goss,1889, Achirus klunzingeri (Steindachner, 1880) and Symphurus elongatus (Gunther,1868) (Pisces: Pleuronectiformes) in Chile, with comments on the distribution of theChilean flounders ABSTRACT. The first records of the Pleuronectiformes Achirus klunzingeri (Soleidae), Etropus ectenes and Bothusconstellatus (Bothidae), and Symphurus elongatus (Cynoglossidae) in chilean waters are reported. The morphologicalcharacteristics of the studied specimens are compared with previous descriptions. Their distribution in the SoutheasternPacific and that of the order in Chilean waters are discussed.

Abstract: On the basis of large collections, comprehensive data on the distribution of larvae of three species of flatfishes of the genus Bothus (B. ocellatus, B. robinsi, and B. podas) in the northern Atlantic are provided, and the routes of their drift migrations are discussed. Special attention is focused on discussing problems of identification of larvae of the listed species and the specification of evidence on meristic characters of adult flatfishes of these species used for the diagnostics of their larvae. It is shown that larvae of two American species of Bothus carried out from the shelves to the system of western boundary currents are widely distributed in the northern Atlantic drifting in waters of the Northern Subtropical Gyre (NSG). Some of them reach the Azores, and some are drifted along the periphery of the circulation system of the NSG currents towards North America. Unlike larvae of American species, larvae of the eastern Atlantic B. podas perform no transatlantic drift migrations, and the area of their distribution is confined to the waters of the eastern Atlantic. Such differences in the extent of latitudinal passive migrations between B. podas and western Atlantic species are explained according to Torson (1965) by differences in temperature conditions during the drift of larvae of species under comparison that directly affect the decrease (during water temperature increase) or increase (at temperature decrease) of the pelagic phase in their development. The latitudinal drift of larval B. podas from West Africa westwards proceeds due to currents that gradually warm during their motion, which causes a decrease of the dates of their staying in the pelagial. The transatlantic drift of larval American Bothus spp. from North America eastwards is observed in gradually cooling currents, which leads to an increase in the duration and extent of their passive migrations.