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39 results for “Petromyzontidae”
FIGURE 3 in Validity of Lampetra pacifica (Petromyzontiformes: Petromyzontidae), a brook lamprey described from the lower Columbia River Basin
FIGURE 3. Percent sequence divergence (Kimura 2-parameter, K2P) in 1191 bp cyt b within and between Lampetra richardsoni and L. pacifica populations, including type localities (with*). All populations except the type locality of L. richardsoni (Smith Creek, Cultus Lake, BC) are in the Columbia Basin (see Map, Fig. 1). Tualatin specimens were from McKay Creek. Numbers of specimens in parentheses.
FIGURE 7 in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 7. Tongue precursor in ammocoete. a, Lethenteron ninae (paratype); b, Eudontomyzon mariae (ZISP 29159). 1, bulb; 2, cirri.
FIGURE 6 in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 6. Lethenteron ninae, holotype (photo made from live specimen, ZISP 54431, TL (measured after preservation) 163.8 mm, Shakhe River).
FIGURE 3. Oral disc. a in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 3. Oral disc. a, Lethenteron ninae, holotype (photo made from live specimen, ZISP 54431, TL (after preservation) 163.8 mm, Shakhe River); b, Eudontomyzon mariae (from Berg 1931: Pl. 4, FIGURE 2, syntype, TL 192 mm). 1, supraoral lamina; 2, infraoral lamina; 3, posterial teeth (one incomplete row in L. ninae and three rows in E. mariae); 4, anterior endolateral bicuspid tooth; 5, row of marginal teeth; 6, fimbriae; 7, ventral pigmented neuromast; 8, exolateral teeth; 9, transverse lingual lamina.
FIGURE 4. Transverse lingual lamina. a in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 4. Transverse lingual lamina. a, Lethenteron ninae, paratype (formula 6u-I-5u); b, Eudontomyzon mariae, syntype (formula 1u-I-2u). Scale bar: 1 mm. Arrows show the differences.
FIGURE 5 in Eudontomyzon graecus, a new nonparasitic lamprey species from Greece (Petromyzontiformes: Petromyzontidae)
FIGURE 5. Geographic distribution of Eudontomyzon graecus sp. n. (․) and E. hellenicus (●).
FIGURE 9 in Lampetra soljani, a new brook lamprey from the southern Adriatic Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 9. Records of L. soljani. Numbers correspond to locality data given in Table 3.
Fig. 6 in Prima segnalazione di Petromyzon marinus Linnaeus 1758 (Agnatha, Petromyzontiformes, Petromyzontidae) per il fiume Mignone (Alto Lazio)
Fig. 6 - Lo sbarramento delle Mole, a monte della località di segnalazione di lampreda di mare nel Fiume Mignone: situazione estiva. / The dam Le Mole, upstream of the sea lamprey's site of observation in the River Mignone: summer situation (Foto/photo: V. Ferri, 14 July/luglio 2020).
Tab. 1 in Prima segnalazione di Petromyzon marinus Linnaeus 1758 (Agnatha, Petromyzontiformes, Petromyzontidae) per il fiume Mignone (Alto Lazio)
<p>Tab. 1 - Misurazioni biometriche (media ±SD; in mm) effettuate digitalmente usando Snakemeasurer©. Sono indicati tra parentesi il numero di fotogrammi o di fotografie usato per la ripetizione di ciascuna misura, per i due individui di <i>Petromyzon marinus</i> osservati. / Biometric measurements (mean ± SD; in mm) made digitally using Snakemeasurer©. The number of frames or photographs used for the repetition of each measurement, for the two individuals of <i>Petromyzon marinus</i> observed, are indicated in brackets.</p><table><tbody><tr><th></th><th>individuo A</th><th>individuo B</th></tr></tbody><tbody><tr><th>lunghezza del corpo</th><td>773,3 ± 50,4 (15)</td><td>453,7 ± 22,5 (6)</td></tr><tr><th>lunghezza prebranchiale</th><td>79,3 ± 4,1 (6)</td><td>45,5 ± 1,9 (6)</td></tr><tr><th>lunghezza branchiale</th><td>77,8 ± 2,9 (6)</td><td>59,8 ± 4,8 (6)</td></tr><tr><th>lunghezza del tronco</th><td>482,3 ± 21,5 (6)</td><td>378,3 ± 9,7 (6)</td></tr><tr><th>lunghezza della coda</th><td>231,3 ± 5,8 (6)</td><td>157,5 ± 9,2 (6)</td></tr></tbody></table>
FIGURE 5 in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 5. Lethenteron ninae, paratype (ZISP 54435, TL 162.5 mm, Mokva River).
FIGURE 1 a-c in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 1 a-c. Measurement landmarks of a lamprey adult. For explanations see Table 1.
FIGURE 2 in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 2. Ammocoete of Lethenteron ninae, paratype (ZISP 54436, TL 126.9 mm, Mzymta River).
FIGURE 10 in Lethenteron ninae, a new nonparasitic lamprey species from the north-eastern Black Sea basin (Petromyzontiformes: Petromyzontidae)
FIGURE 10. Mzymta River (in the late autumn), a typical habitat of Lethenteron ninae.
Figure 4 from: Renaud CB, Naseka AM (2015) Redescription of the Far Eastern brook lamprey Lethenteron reissneri (Dybowski, 1869) (Petromyzontidae). ZooKeys 506: 75-93. https://doi.org/10.3897/zookeys.506.9817
Figure 4 - Oral disc of lampreys identified by Berg (1931) as Lethenteron reissneri without row of posterials. A ZIN 14457, Shangshi River, Songhua (Sungari) River system, People's Republic of China, 146 mm TL with complete posterial row comprising 24 unicuspid teeth (Pr1; only few of these teeth visible in photo). Note second row of posterials (Pr2). Two exolateral teeth additionally present on left side, one between first and second (E1) and other between second and third endolaterals (E2) B ZIN 15078 (re-identified as Lethenteron camtschaticum), Samarga River, near Sufren Cape, Russia, 178.0+ mm TL with complete posterial row comprising 18 unicuspid, 3 bicuspid, 1 unicuspid teeth (only few of these teeth visible in photo). Exolateral tooth present on right side between first and second endolaterals not visible because oral disc not fully open.
Figure 3 from: Renaud CB, Naseka AM (2015) Redescription of the Far Eastern brook lamprey Lethenteron reissneri (Dybowski, 1869) (Petromyzontidae). ZooKeys 506: 75-93. https://doi.org/10.3897/zookeys.506.9817
Figure 3 - Syntypes (ammocoetes) of Petromyzon reissneri Dybowski, NMW 78112, 106.5 mm (below); 122.2 mm TL (above). Arrows point to dark midline streak on tail.
Figure 1 from: Renaud CB, Naseka AM (2015) Redescription of the Far Eastern brook lamprey Lethenteron reissneri (Dybowski, 1869) (Petromyzontidae). ZooKeys 506: 75-93. https://doi.org/10.3897/zookeys.506.9817
Figure 1 - Geographic distribution of Lethenteron reissneri and material identified by Berg (1931) as Lethenteron reissneri without posterials. Approximate location of the type locality of Lethenteron reissneri, Amur River basin, Russia (solid star), topotypic localities in Russia and Mongolia (solid diamonds) and localities of material identified by Berg (1931) as Lethenteron reissneri: Shangshi River, Amur River basin, People's Republic of China (solid diamond), Sedanka River, Sea of Japan basin, Russia (solid square), and Samarga River, Sea of Japan basin, Russia (solid square). The Sedanka and Samarga River specimens were re-identified as Lethenteron camtschaticum.
Figure 2 from: Renaud CB, Naseka AM (2015) Redescription of the Far Eastern brook lamprey Lethenteron reissneri (Dybowski, 1869) (Petromyzontidae). ZooKeys 506: 75-93. https://doi.org/10.3897/zookeys.506.9817
Figure 2 - Syntype (adult) of Petromyzon reissneri Dybowski, 1869, ZMB 7118, 117.1 mm TL, Onon River.
Phylogenetic and biogeographic history of brook lampreys (Lampetra: Petromyzontidae) in the river basins of the Adriatic Sea based on DNA barcode data
<p>Alignment used in Nexus format and resulting tree file from the ML analysis</p>
FIGURE 2 in Validity of Lampetra pacifica (Petromyzontiformes: Petromyzontidae), a brook lamprey described from the lower Columbia River Basin
FIGURE 2. Trunk myomere counts for populations discussed in text. All populations except Lampetra richardsoni from British Columbia are from the Columbia Basin; those without citations are from the present study. Sample means are given in Results.
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