Length-weight relationships for seven fish species of the Napo River, Upper Amazon, Peru

Garcia‐Ayala, James R.; Brambilla, Eduardo Meneguzzi; David, Gianmarco Silva; Benine, Ricardo C.; Sánchez, Homero

doi:10.1111/jai.13428

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…Of all 16 records presented here, and currently shown on Fishbase, the available values of the LWR parameters for these species are based on Bayesian predictions. However, LWR estimates have already been published elsewhere for Hemiodus atranalis (Giarrizzo et al., 2011), Chalceus erythrurus (Chuctaya et al., 2017; Zuchi et al., 2020), Tetragonopterus argenteus (Garcia‐Ayala et al., 2017; Vicentin et al., 2018), Acarichthys heckelii (Matos et al., 2019) and Plagioscion montei (Zuchi et al., 2020). However, for the other species, such data are not published.…”

Section: Discussionmentioning

confidence: 99%

Length‐weight relationship of 16 fish species from the Negro River basin (Amazonas state, Brazil)

et al. 2020

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Summary This study aimed to estimate the parameters of length‐weight relationship for 16 freshwater fish species that inhabit the Aracá and Demeni Rivers, which are two tributaries of the Negro River (Amazonas state, Brazil). The fishes were sampled using gillnets (15 × 2 m, mesh size 30–120 mm between opposite knots), during 6 days each year, in April 2016, November 2018 and April 2019. The gillnets were placed in the river twice each day; in the morning (5–9 a.m.) and in the evening (5–9 p.m.), with a standardized time of 4 hr. Measurements were taken for standard length (SL – 0.1 cm precision) and total weight (TW – 0.01 g precision). The parameters a and b of the equation WT = a.LTb were estimated. This study also provides new data on of maximum lengths for six species, namely, Argonectes longiceps, Hemiodus atranalis, Chalceus erythrurus, Astrodoras asterifrons, Trachydoras steindachneri and Acarichthys heckelii.

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Section: Discussionmentioning

confidence: 99%

Length‐weight relationship of 16 fish species from the Negro River basin (Amazonas state, Brazil)

et al. 2020

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“…Therefore, this study constitutes background information useful for fishery management and conservation of Peruvian Amazon ichthyofauna, complementing Garcia-Ayala et al (2017) who analyzed other seven fish species of Napo river.…”

Section: Discussionmentioning

confidence: 98%

“…The fishery in the Peruvian Amazon is difficult to manage because of its multi-specific character, scarce biological information on most of the target species, and difficulty in identifying stocks (Tello-Martin & Bayley, 2001;Garcia et al, 2009). To improve fisheries management and access fish stocks a useful tool is the length-weight relationship (LWR) (Froese, 2006;Brambilla et al, 2015;Garcia-Ayala et al, 2017). It can be used for identifying the reproductive cycle and feeding conditions of fish populations (Wootton, 1998;Camara et al, 2011;Freitas et al, 2014), estimate fish weight based on the length and vice versa and obtain the body conditions of the sampled fish specimens (Froese, 2006;Freitas et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Length-Weight Relationships for 14 Fish Species of Napo River Basin, Peruvian Amazon

Garcia‐Ayala¹,

Brambilla²,

David³

et al. 2020

Folia Amaz

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This work presents the length-weight relationships of 14 species of fish of the Napo River basin. Fish collections were carried out between 2012 and 2014, using gill nets and seine. A total of 1896 specimens, belonging to 14 species and five orders were analyzed. The allometric coefficient b ranged from 2.69 to 3.78. A new record of length-weight relationship is presented for Curimata cisandina (Allen, 1942). The comparisons with other Amazonian studies indicated differences in the parameters a and b of LWR with this study for the species Triportheus angulatus (Spix & Agassiz, 1829), Mylossoma duriventre (Cuvier, 1818), Roeboides myersii Gill, 1870 and Pellona castenaena Valenciennes, 1847 and only parameter b for Psectrogaster amazonica. The results presented in this work contribute to a better knowledge of fish resources in the region of the Peruvian Amazon, especially in the Napo River basin.

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“…La literatura existente muestra resultados solo para 56 especies, de un total de 1 141 especies reportadas para aguas continentales peruanas (MINAM, 2019). Los estudios han sido obtenidos a partir de datos colectados en estanques piscícolas (Felipa et al, 2016), a partir de desembarques en principales centros urbanos (Riofrío, 2002;García et al, 2010;Flores-Gómez, 2015;Riofrío-Quijandría et al, 2017;Bonilla-Castillo et al, 2018), y en algunos casos para determinadas cuencas (Alcántara et al, 2008;Tobes et al, 2015;Chuctaya et al, 2017;García-Ayala, 2017). Prochilodus nigricans (Familia Prochilodontidae) y Potamorhina altamazonica (Familia Curimatidae) son dos especies de gran importancia en la economía regional de Loreto.…”

Section: Introductionunclassified

RELACIÓN LONGITUD-PESO Y FACTOR DE CONDICIÓN DE Prochilodus nigricans Y Potamorhina altamazonica EN LA CUENCA DEL RÍO TAHUAYO, LORETO (PERÚ)

Cañas-Alva¹,

Moya

Rojas³

et al. 2020

Folia Amaz

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Se presenta la relación Longitud-Peso y Factor de condición para Prochilodus nigricans (boquichico) y Potamorhina altamazonica (llambina) para la cuenca del río Tahuayo, dos especies de gran importancia comercial y para la pesca de subsistencia en muchos ríos y tributarios en Loreto, Perú. Durante 12 meses se colectaron datos biológicos de 1,114 individuos de las dos especies a partir de las capturas realizadas por los pescadores de la Asociación de Pescadores Artesanales “Puma Garza I”. Los resultados evidenciaron que boquichico tiene un crecimiento isométrico (PT = 0,0126×LT^3.034) y llambina presenta un crecimiento alométrico negativo con diferencias en los parámetros para hembras (PT = 0,0985×LT^2.35) y para machos (PT = 0,0755×LT^2.43). Ambas especies presentaron un factor de condición relativo bueno durante todo el ciclo hidrológico y sus variaciones estuvieron relacionadas a las condiciones hidrológicas de la cuenca. Estas estimaciones proveen las primeras informaciones del crecimiento de estas dos especies en función de la talla y el peso y son de gran utilidad para el conocimiento de los stocks pesqueros de estas especies distribuidas en la cuenca del río Tahuayo.

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Length-weight relationships for seven fish species of the Napo River, Upper Amazon, Peru

Cited by 3 publications

References 15 publications

Length‐weight relationship of 16 fish species from the Negro River basin (Amazonas state, Brazil)

Length‐weight relationship of 16 fish species from the Negro River basin (Amazonas state, Brazil)

Length-Weight Relationships for 14 Fish Species of Napo River Basin, Peruvian Amazon

RELACIÓN LONGITUD-PESO Y FACTOR DE CONDICIÓN DE Prochilodus nigricans Y Potamorhina altamazonica EN LA CUENCA DEL RÍO TAHUAYO, LORETO (PERÚ)

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