Scholarlink

Abstract <p>A new species of pimelodid catfish of the genus <i>Propimelodus,</i> diagnosed in this group by a long adipose fin and shorter spines on dorsal and pectoral fins, from the upper Madeira system in Bolivia is described. <i>Propimelodus lobatus</i> sp. nov. is distinguished from its congeners by the eye diameter (<i>P. lobatus</i> 20.6–24.8% of head length, 45.3–56% of snout length and 114–153.1% of posterior nostril–eye distance <i>vs.</i> 29.7–34.8% of head length and 62.7–74.7% of snout length in <i>P. araguayae,</i> 30.7–44.1% of snout length and 70.4–114% of posterior nostril–eye distance in <i>P. caesius,</i> and 9.6–19.8% of head length, 17.2–37.9% of snout length and 36–90% of posterior nostril-eye distance in <i>P. eigenmanni</i>), total number of gills rakers on first branchial arch (<i>P. lobatus</i> 30–34 <i>vs.</i> 20–23 in <i>P. caesius</i> and 19–20 in <i>P. eigenmanni</i>), anal fin lobe present in <i>P. lobatus</i> (<i>vs</i>. absent in <i>P. caesius</i> and <i>P. eigenmanni</i>), total number of vertebrae (<i>P. lobatus</i> 42–44 <i>vs.</i> 46–48 in <i>P. caesius</i> and 45–46 in <i>P. eigenmanni</i>). This species may potentially be distributed throughout the Madeira River, other parts of the Amazon basin, and the Orinoco basin.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A New Species of Propimelodus (Pimelodidae) from the Upper Madeira System, Amazon Basin

  • 期刊论文

  • 发表日期：

    2025年3月31日

查看全文
  • H. Torrico-Destre,
  • M. Careaga,
  • F. M. Carvajal-Vallejos

摘要

Abstract

A new species of pimelodid catfish of the genus Propimelodus, diagnosed in this group by a long adipose fin and shorter spines on dorsal and pectoral fins, from the upper Madeira system in Bolivia is described. Propimelodus lobatus sp. nov. is distinguished from its congeners by the eye diameter (P. lobatus 20.6–24.8% of head length, 45.3–56% of snout length and 114–153.1% of posterior nostril–eye distance vs. 29.7–34.8% of head length and 62.7–74.7% of snout length in P. araguayae, 30.7–44.1% of snout length and 70.4–114% of posterior nostril–eye distance in P. caesius, and 9.6–19.8% of head length, 17.2–37.9% of snout length and 36–90% of posterior nostril-eye distance in P. eigenmanni), total number of gills rakers on first branchial arch (P. lobatus 30–34 vs. 20–23 in P. caesius and 19–20 in P. eigenmanni), anal fin lobe present in P. lobatus (vs. absent in P. caesius and P. eigenmanni), total number of vertebrae (P. lobatus 42–44 vs. 46–48 in P. caesius and 45–46 in P. eigenmanni). This species may potentially be distributed throughout the Madeira River, other parts of the Amazon basin, and the Orinoco basin.