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230 results for “Fish fauna”
Data from: DNA barcoding fishes from the Congo and the Lower Guinean provinces: assembling a reference library for poorly inventoried fauna
The Congolese and Lower Guinean ichthyological provinces are understudied hotspots of the global fish diversity. Here, we barcoded 741 specimens from the Lower and Middle Congo River and from three major drainage basins of the Lower Guinean ichthyological province, Kouilou-Niari, Nyanga and Ogowe. We identified 195 morphospecies belonging to 82 genera and 25 families. Most morphospecies (92.8%) corresponded to distinct clusters of DNA barcodes. Of the four morphospecies present in both neighbouring ichthyological provinces, only one showed DNA barcode divergence <2.5%. A small fraction of the fishes barcoded here (12.9% of the morphospecies and 16.1% of the barcode clusters representing putative species) were also barcoded in a previous large-scale DNA analysis of freshwater fishes of the Lower Congo published in 2011 (191 specimens, 102 morphospecies). We compared species assignments before and after taxonomic updates and across studies performed by independent research teams and observed that most cases of inconsistent species assignments were due to unknown diversity (undescribed species and unknown intraspecific variation). Our results report more than 17 putative new species and show that DNA barcode data provide a measure of genetic variability that facilitates the inventory of underexplored ichthyofaunae. However, taxonomic scrutiny, associated with revisions and new species descriptions, is indispensable to delimit species and build a coherent reference library.
FIGURE 1. Rhipidocotyle danai n in Bucephalids (Digenea: Bucephalidae) from marine fishes off the south-western coast of Java, Indonesia, including the description of two new species of Rhipidocotyle and comments on the marine fish digenean fauna of Indonesia
FIGURE 1. Rhipidocotyle danai n. sp. Ventral view of holotype, uterus in outline. Scale-bar = 500μm.
FIGURE 4. Rhipidocotyle jayai n in Bucephalids (Digenea: Bucephalidae) from marine fishes off the south-western coast of Java, Indonesia, including the description of two new species of Rhipidocotyle and comments on the marine fish digenean fauna of Indonesia
FIGURE 4. Rhipidocotyle jayai n. sp. Ventral view of specimen with withdrawn anterior portion. Scale-bar = 500μm.
FIGURE 3. Rhipidocotyle jayai n in Bucephalids (Digenea: Bucephalidae) from marine fishes off the south-western coast of Java, Indonesia, including the description of two new species of Rhipidocotyle and comments on the marine fish digenean fauna of Indonesia
FIGURE 3. Rhipidocotyle jayai n. sp. Ventral view of holotype, uterus in outline. Scale-bar = 500μm.
FIGURES 32–38 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 32–38. Gyrodactylus jarocho sp. nov. from Xiphophorus hellerii Heckel. 32. Light micrograph of the haptoral central hook complex showing the hamuli, the dorsal and the ventral bar (ventral view); 33. Light micrograph of the marginal hook; 34–35. Light micrographs of the marginal hook sickles; 36. Drawing of the central hook complex; 37. Drawing of the marginal hook sickle; 38. Drawing of the male copulatory organ (MCO). Scale bars: Figures 32, 33 and 36 = 5 µm; Figures 34, 35, 37 and 38 = 3 µm.
FIGURES 39–46 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 39–46. Gyrodactylus xalapensis sp. nov. from Heterandria bimaculata Heckel. 39. Light micrograph of the haptoral central hook complex showing the hamuli, the dorsal and the ventral bar (ventral view); 40–41. Light micrographs of the marginal hooks; 42. Light micrograph of the marginal hook sickle; 43. Light micrographs of the male copulatory organ (MCO); 44. Drawing of the central hook complex; 45. Drawing of the marginal hook sickle; 46. Drawing of the MCO. Scale bars: Figures 39–41 and 44 = 5 µm; Figures 42, 43, 45 and 46 = 3 µm.
FIGURE 31 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURE 31. Principal components analysis plot (Factor1 vs Factor2) of Gyrodactylus bullatarudis Turnbull, 1956, Gyrodactylus cytophagus Paperna, 1968, Gyrodactylus poeciliae Harris & Cable, 2000, Gyrodactylys rasini Lucký, 1973 and Gyrodactylus xalapensis sp. nov. (13 ln-transformed variables; n = 29 specimens). The specimens of G. xalapensis sp. nov. (ellipse 1) are clearly separated from G. rasini (ellipse 2). Separation of the specimens is effected by the several hamulus variables acting along Factor1 (total length (HTL), shaft length (HSL), point length (HPL), aperture distance (HA), distal shaft width (HDSW) and the proximal shaft width (HPSW)) and by point curve angle of the hamulus (CosHPCA), the total length (MHTL) and shaft length (MHSL) of the marginal hook acting through Factor2. Plot codes: a. G. bullatarudis from Poecilia mexicana Steindachner; b. G. bullatarudis from Xiphophorus hellerii Heckel; d. G. xalapensis sp. nov. from Heterandria bimaculata Heckel; e. G. bullatarudis paratype from Poecilia sphenops Valenciennes; j. G. poeciliae from Poecilia caucana (Steindachner); l. G. cytophagus from Aplocheilichthys pumilus (Boulenger); m. G. rasini from X. hellerii.
FIGURE 30 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURE 30. Principal Components Analysis plot (Factor1 vs Factor2) of the 13 point-to-point measurements made on 45 gyrodactylids collected from a range of poeciliid hosts. Separation of the specimens is principally influenced by the hamulus total length (HTL), shaft length (HSL), point length (HPL) and aperture distance (HA) acting along Factor1 in a negative direction, and the inner (CosIHAA) and outer (CosHAA) hamulus angles acting along Factor1 in a positive direction. The total length (MHTL) and the shaft length (MHSL) of the marginal hook are key variables in the separation of specimens along Factor2. The raw ellipses highlight the specimens of Gyrodactylus xalapensis sp. nov. from Heterandria bimaculata Heckel (1), and Gyrodactylus jarocho sp. nov. from Xiphophorus hellerii Heckel (2). Plot codes: a. Gyrodactylus bullatarudis Turnbull, 1956 from Poecilia mexicana Steindachner; b. G. bullatarudis from X. hellerii; c. G. j a ro c h o sp. nov. from X. hellerii; d. G. xalapensis from H. bimaculata; e. G. bullatarudis paratype from Poecilia sphenops Valenciennes; f. Gyrodactylus costaricensis Kritsky & Fritts, 1970 from P. sphenops; g. Gyrodactylus gambusiae Rogers & Wellborn, 1965 from Gambusia affinis Baird & Girard; h. Gyrodactylus pictae Cable, van Oosterhout, Barson & Harris, 2005 from Micropoecilia (=Poecilia) picta Regan; i. Gyrodactylus turnbulli Harris, 1986 from Poecilia reticulata Peters; j. Gyrodactylus poeciliae Harris & Cable, 2000 from Poecilia caucana Steindachner; k. Gyrodactylus milleri Harris & Cable, 2000 from P. caucana; l. Gyrodactylus cytophagus Paperna, 1968 from Aplocheilichthys pumilus Boulenger; m. Gyrodactylus rasini Lucký, 1973 from X. hellerii.
FIGURES 1–14. A in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 1–14. A size invariant comparison of the marginal hook sickles of two new species of Gyrodactylus with the nine species previously recorded infecting poeciliids. 1. Gyrodactylus jarocho sp. nov.; 2. Gyrodactylus xalapensis sp. nov.; 3. Gyrodactylus bullatarudis Turnbull, 1956 (re-examination); 4. Overlay of G. bullatarudis with G. j a ro c h o sp. nov. (broken line); 5. Overlay of G. bullatarudis with G. xalapensis sp. nov. (broken line); 6. Gyrodactylus costaricensis Kritsky & Fritts, 1970 (re–examination); 7. Overlay of G. costaricensis with G. j a ro c h o sp. nov. (broken line); 8. Overlay of G. costaricensis with G. xalapensis sp. nov. (broken line); 9. Gyrodactylus cytophagus Paperna, 1968 (reexamination); 10. Overlay of G. cytophagus with G. ja ro c ho sp. nov. (broken line); 11. Overlay of G. cytophagus with G. xalapensis sp. nov. (broken line); 12. Gyrodactylus gambusiae Rogers & Wellborn, 1965 (re-examination); 13. Overlay of G. gambusiae with G. j a ro c h o sp. nov. (broken line); 14. Overlay of G. gambusiae with G. xalapensis sp. nov. (broken line). Scale bars = 3 µm.
FIGURES 47–52 in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 47–52. Light photographs and drawings of Gyrodactylus milleri Harris & Cable, 2000 (holotype), showing the three different sizes and morphologies of the marginal hook sickles. 47, 50. Small marginal hook sickle; 48, 51. Medium sized marginal hook sickle; 49, 52. Large marginal hook sickle. Scale bar = 3 µm.
FIGURES 15–29. A in Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish
FIGURES 15–29. A size invariant comparison of the marginal hook sickles of two new species of Gyrodactylus with the nine species previously recorded infecting poeciliids. 15. Gyrodactylus milleri Harris & Cable, 2000 (re-examination of the small, common form of marginal hook); 16. Overlay of G. milleri with G. j aroc h o sp. nov. (broken line); 17. Overlay of G. milleri with G. xalapensis sp. nov. (broken line); 18. Gyrodactylus pictae Cable, van Oosterhout, Barson & Harris, 2005 (re-examination); 19. Overlay of G. pictae with G. ja ro c ho sp. nov. (broken line); 20. Overlay of G. pictae with G. xalapensis sp. nov. (broken line); 21. Gyrodactylus poeciliae Harris & Cable, 2000 (re-examination); 22. Overlay of G. poeciliae with G. jaroc h o sp. nov. (broken line); 23. Overlay of G. poeciliae with G. xalapensis sp. nov. (broken line); 24. Gyrodactylus rasini Lucký, 1973 (re-examination); 25. Overlay of G. r a s i n i with G. j a ro c ho sp. nov. (broken line); 26. Overlay of G. rasini with G. xalapensis sp. nov. (broken line); 27. Scanning electron micrograph of Gyrodactylus turnbulli Harris, 1986 from Andrew P. Shinn's collection (re-examination); 28. Overlay of G. turnbulli with G. j a ro c ho sp. nov. (broken line); 29. Overlay of G. turnbulli with G. xalapensis sp. nov. (broken line). Scale bars = 3 µm.
FIGURE 2 in Checklist and analysis of completeness of the reef fish fauna of the Revillagigedo Archipelago, Mexico
FIGURE 2. Observed species richness of fish families at the Revillagigedo Archipelago, and expected value (average and standard deviation), according to four non parametric methods applied on data from Table 1.
FIGURE 5. Myxine jespersenae, ZMUC P02129, 463 in A checklist of the fish fauna of Greenland waters 2378
FIGURE 5. Myxine jespersenae, ZMUC P02129, 463 mm TL, Davis Strait, 8 August 1991. Drawing Birgitte Rubaek.
FIGURE 2 in A checklist of the fish fauna of Greenland waters 2378
FIGURE 2. Number of species included in previous and current checklists of the Greenland fish Fauna.
FIGURE 4 in A checklist of the fish fauna of Greenland waters 2378
FIGURE 4. Distrubtion of the 269 fish species known from Greenland waters. Each species is classified as very rare, <5 records; rare, 6–50 records, or common,> 50 records.
FIGURE 1 in A checklist of the fish fauna of Greenland waters 2378
FIGURE 1. Map of the Greenland EEZ and of the four major regions in Greenland waters. SW-South West, NW-North West, SE-South East, NE-North East.
FIGURE 7. Rhinochimaera atlantica, ZMUC P0955 in A checklist of the fish fauna of Greenland waters 2378
FIGURE 7. Rhinochimaera atlantica, ZMUC P0955, Denmark Strait, 26 June 1999. Drawing Birgitte Rubaek.
FIGURE 16 Melanostigma atlanticum, ZMUC P762246 in A checklist of the fish fauna of Greenland waters 2378
FIGURE 16 Melanostigma atlanticum, ZMUC P762246, Davis Strait, 14 August 1991. Drawing Birgitte Rubaek.
FIG. 1 in New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist
FIG. 1. Map of Costa Rica, Middle America, showing the división into 18 major river drainage basins: Lago de Nicaragua (LN), Río Frío (RF), San Juan (SJ), San Carlos (SC), Sarapiquí (Sa), Tortuguero (To), Parismina (Pa), Matina (Ma) and Sixaola (Si) (Atlantic); Isla del Coco (IC), Nicoya (Ni), Tempisque (Te), Bebedero (Be), Barranca (Ba), Tárcoles (Ta), Pirrís (Pi), Térraba (Tr) and Coto (Co) (Pacific). Part of the Changuinola (Ch) River basin is located in the Costa Rican territory, however, this area was excluded, for practical purposes, from this review due to the lack of fish fauna given its elevation (+2000 m.a.s.l.). Shaded basins drain to the Pacific Ocean, pale basins drain to the Caribbean (Atlantic Ocean). Data from the continental basins was obtained from HydroSHEDS (Lehner et al. 2008). Data from the Isla del Coco basin was obtained from Díaz Bolaños et al. (2012). Map base made by Diego Elias (LSU) and edited by the author.
FIG. 4 in New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist
FIG. 4. Range extensions. (A) Brycon costaricensis, specimen captured in the Río Corobicí, near Palmira, Cañas, Guanacaste (10.55285, -85.09607), at 208 m.a.s.l., on May 2, 2021, by Jorge San Gil and Arturo Angulo. (B) Brycon costaricensis, specimen captured in an artificial (irrigation) canal (Canal Oeste) on the Cañas-Upala road, Cañas, Guanacaste (10.47837, -85.13624), at 60 m.a.s.l., on May 2, 2021, by Pablo Morales et al. (C) Carassius auratus, specimen captured in the Río San Carlos, Santa Rita, Pital, San Carlos, Alajuela (10.70005, -84.19132), at 29 m.a.s.l., on June 2, 2019, by Oscar Sandoval. (D) Cynodonichthys fuscolineatus, specimen captured in an unnamed stream on the Bijagua-Zapote-El Higuerón road, Bijagua, Upala, Alajuela (10.76306, -85.06727), at 541 m.a.s.l., on May 1, 2021, by Jorge San Gil et al. (E) Cyphocharax magdalenae, specimen captured in the Quebrada Honda, Pavones, Golfito, Puntarenas (8.42294, -83.10574), 2 m.a.s.l., on March 30, 2021, by Arturo Angulo et al. (F) Cyprinus carpio, specimen captured in the Laguna Jalova, Barra del Parismina, Pococí, Limón (10.34266, -83.39668), at 1 m.a.s.l., on August 24, 2021, by Jorge Leiva. (G) Eucinostomus argenteus, specimen captured in the Río Tortuguero, in the Parque Nacional Tortuguero, Limón (10.5852, -83.52335), at 1 m.a.s.l., on June 6, 1985, by Kirk Winemiller (UCR 1790- 007). (H) Leptophilypnus panamensis, specimen captured in the Río Lagarto, Chomes, Puntarenas (10.08320, -84.92064), at 15 m.a.s.l., on September 1, 1979, by William Bussing et al (UCR 1268-018). (I) Lutjanus novemfasciatus, specimen captured in the Río Ora, 2 Km E of Puerto Carrillo, on the Puerto Carrillo-Estrada road, Guanacaste (9.87353, -85.45638), at 8 m.a.s.l., on August 31, 2019, by Jorge San Gil. (J) Pterygoplichthys pardalis, specimen captured in the Isla Chira, on the Golfo de Nicoya, Puntarenas Costa Rica (10.10398, -85.11878), at 0 m.a.s.l., on November 6, 2020, by Jose Matarrita. (K) Sphoeroides rosenblatti, specimen captured in the Río Sábalo, 2.5 Km E of Playa Zancudo, on the Sabalos-Playa Zancudo road, Puntarenas (8.49517, -83.10448), at 15 m.a.s.l., on March 28, 2021, by Arturo Angulo et al. (L) Tomocichla tuba, specimen captured in the Río Buena Vista (Celeste) on the Parque Nacional Volcán Tenorio, Upala, Alajuela (10.70378, -84.99076), at 731 m.a.s.l, on May 1, 2021, by Isaac López et al.
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International Brain Laboratory public data
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OpenNeuro
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