Aspects of the biology of Coryphaenoides delsolari Chirichigno & Iwamoto, 1977 off northern Perú

Jacqueline Palacios, Edward Barriga, Carlos Salazar, Aldo Rodríguez, Miguel Romero


DOI: https://doi.org/10.3856/vol37-issue3-fulltext-14

Abstract


In order to determine the abundance, distribution, and population structure of Coryphaenoides delsolari off the northern Perú, the results of two cruises carried out in 2007 and 2008 were analyzed. For this, the swept area method was implemented using bottom trawling from Puerto Pizarro (3°25’S) to Huarmey (10°S). The study area was divided into three levels between 200 and 1500 m depth. C. delsolari was the most representative fish in catches between 500 and 1000 m depth to the north of Pimentel (7°S). The highest relative abundance was 3,178 kg km-2 and the total biomass was estimated to be 9,669.45 ton (± 4,630.15 ton). The size structure was stratified latitudinally: the lower the latitude, the bigger the fishes. Females were larger than males. Finally, length-weight relationship was found to be negative and allometric.

Palacios J, Barriga E, Salazar C, Rodríguez A, Romero M. Aspects of the biology of Coryphaenoides delsolari Chirichigno & Iwamoto, 1977 off northern Perú. Lat. Am. J. Aquat. Res.. 2017;37(3): 455-462. Available from: doi:10.3856/vol37-issue3-fulltext-14 [Accessed 16 Sep. 2019].
Palacios, J., Barriga, E., Salazar, C., Rodríguez, A., & Romero, M. (2017). Aspects of the biology of Coryphaenoides delsolari Chirichigno & Iwamoto, 1977 off northern Perú. Latin American Journal of Aquatic Research, 37(3), 455-462. doi:http://dx.doi.org/10.3856/vol37-issue3-fulltext-14