TY - JOUR
T1 - The biological and reproductive parameters of the invasive armored catfish Pterygoplichthys disjunctivus from Adolfo López Mateos El Infiernillo Reservoir, Michoacán-Guerrero, Mexico
AU - Rueda-Jasso, Rebeca Aneli
AU - Campos-Mendoza, Antonio
AU - Arreguín-Sánchez, Francisco
AU - Díaz-Pardo, Edmundo
AU - Martínez-Palacios, Carlos Antonio
N1 - Funding Information:
This work was funded by CONACYT through the Fondos Mixtos CONACYT-Gobierno del Estado de Michoacán grant numbers, 37147 and 53437, and PIFI-UMSNH project 2010. We would like to thank the fishermen who helped with the fish samples. We also appreciate the help of Dr. Jonathan Armbruster, from Auburn University, USA, who helped us to identify the fish, and Dr. Javier Ponce, from Universidad Michacana, who advised us on the statistical analysis. Finally, we would like to thank the reviewers for their excellent recommendations, which helped to improve this report.
PY - 2013
Y1 - 2013
N2 - Invasive Pterygoplichthys disjunctivus (Weber, 1991) (synonymy: Liposarcus multiradiatus) armored catfish were first reported in Mexico in 1995 and have spread successfully in several aquatic ecosystems. In Adolfo López Mateos El Infiernillo Reservoir, Michoacán - Guerrero, the population of this armored catfish is growing substantially because natural predators are not present and exploitation by humans does not occur. Over a complete annual cycle, we studied the following population parameters: weight, total and standard length, the relationship of weight to total length, the hepatosomatic (HSI) and gonadosomatic (GSI) indices, total fecundity (TF) and relative fecundity (RF). The average total (TL) and standard lengths (SL) were 248 ± 37.5 and 188 ± 30.7 mm, respectively, and the average weight (W) was 135.3± 66.8 g. The largest fish reported was 520 mm in TL and weighed 1 280 g. The species showed an extended reproductive season from May to November, as indicated by the GSI, TF and RF. The strongest reproductive peak occurred from July through October. During the annual cycle, the highest monthly average fecundity was 2 447 eggs, and the average relative fecundity was 12.6 eggs per g of fish (August and September). This information will be crucial for calculating the current biomass and future growth of the population. The calculation of these results could provide a basis for the exploitation of this resource for human consumption and animal feeds.
AB - Invasive Pterygoplichthys disjunctivus (Weber, 1991) (synonymy: Liposarcus multiradiatus) armored catfish were first reported in Mexico in 1995 and have spread successfully in several aquatic ecosystems. In Adolfo López Mateos El Infiernillo Reservoir, Michoacán - Guerrero, the population of this armored catfish is growing substantially because natural predators are not present and exploitation by humans does not occur. Over a complete annual cycle, we studied the following population parameters: weight, total and standard length, the relationship of weight to total length, the hepatosomatic (HSI) and gonadosomatic (GSI) indices, total fecundity (TF) and relative fecundity (RF). The average total (TL) and standard lengths (SL) were 248 ± 37.5 and 188 ± 30.7 mm, respectively, and the average weight (W) was 135.3± 66.8 g. The largest fish reported was 520 mm in TL and weighed 1 280 g. The species showed an extended reproductive season from May to November, as indicated by the GSI, TF and RF. The strongest reproductive peak occurred from July through October. During the annual cycle, the highest monthly average fecundity was 2 447 eggs, and the average relative fecundity was 12.6 eggs per g of fish (August and September). This information will be crucial for calculating the current biomass and future growth of the population. The calculation of these results could provide a basis for the exploitation of this resource for human consumption and animal feeds.
KW - Armored catfish
KW - Biological and reproductive parameters
KW - Control strategy
KW - Invasive species
KW - Loricariidae
UR - http://www.scopus.com/inward/record.url?scp=84877790775&partnerID=8YFLogxK
U2 - 10.7550/rmb.26091
DO - 10.7550/rmb.26091
M3 - Artículo
SN - 1870-3453
VL - 84
SP - 318
EP - 326
JO - Revista Mexicana de Biodiversidad
JF - Revista Mexicana de Biodiversidad
IS - 1
ER -