2015
DOI: 10.1590/1982-0224-20140161
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Allometric larval growth of the bottom-dwelling catfish Lophiosilurus alexandri Steindachner, 1876 (Siluriformes: Pseudopimelodidae)

Abstract: We investigated the early life growth pattern of pacamã, Lophiosilurus alexandri, a catfish endemic to the rio São Francisco basin, Brazil. Pacamã larvae were kept in a galvanized trough for 29 days after hatching. We collected approximately 10 larvae daily (total number = 285). We obtained from each specimen the total length (independent variable) and 11 other body measurements (dependent variables). We performed linear regressions on the log-transformed data to determine the growth pattern of the body measur… Show more

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Cited by 8 publications
(7 citation statements)
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“…Lophiosilurus alexandri is interesting for aquaculture, and studies have been carried out recently aimed at the development of its conservation and commercial farming, such as Barros et al. (); Santos and Luz (); Guimarães‐Cruz, Santos, Sato, and Veloso‐Junior (); Mello, Santos, Guimarães‐Cruz, Godinho, and Godinho (); Cordeiro et al. ().…”
Section: Introductionmentioning
confidence: 99%
“…Lophiosilurus alexandri is interesting for aquaculture, and studies have been carried out recently aimed at the development of its conservation and commercial farming, such as Barros et al. (); Santos and Luz (); Guimarães‐Cruz, Santos, Sato, and Veloso‐Junior (); Mello, Santos, Guimarães‐Cruz, Godinho, and Godinho (); Cordeiro et al. ().…”
Section: Introductionmentioning
confidence: 99%
“…and other interspecifically variable morphometric traits, such as the relative position of the anus.Emergence of tactile and chemosensitive barbels in early larval stages suggests that they have an important role in food detection during the early phases of development de Mello et al (2015). reported that barbels are important organs in early life of the pacamã catfish Lophiosilurus alexandri Steindachner 1876 and showed that barbels had the highest growth rates among all body measurements evaluated in their study.…”
mentioning
confidence: 87%
“…de Mello et al . () reported that barbels are important organs in early life of the pacamã catfish Lophiosilurus alexandri Steindachner 1876 and showed that barbels had the highest growth rates among all body measurements evaluated in their study. Maintenance of the embryonic membrane until the final flexion stage could help to increase a larva's chances of survival by facilitating locomotion at low Reynolds number when the lack of fins leads an inertial swimming (Webb & Weihs, ).…”
Section: Morphometric and Meristic Data For Larval Stages Of Pimelodumentioning
confidence: 97%
“…The pacamã (Lophiosilurus alexandri) is a native fish São Francisco river. This species present a very flattened head (Mello et al 2015), carnivorous feed habit, sedentary behavior, and it prefers lentic environment with sand or pebbles deep (Travassos, 1959). The interest to farming of this species is related to excellent quality flavor of flesh and spines free (Meurer et al 2010).…”
Section: Introductionmentioning
confidence: 99%