Trophic spectrum of Parachromis dovii in ``el bordo La Palapa``, Morelos, Mexico

• DOI: 10.22533/at.ed.1593982328114

• Palavras-chave: Cichlids, feeding, trophic spectrum, Morelos

• Keywords: Cichlids, feeding, trophic spectrum, Morelos

• Abstract:

  When we talk about eating habits we are referring to a series of attitudes that an individual has at the time of feeding, referring to the way the fish feeds, that is, its behavior, search and ingestion. Sampling was carried out from March 2019 to February 2020, with the purpose of knowing the dietary aspects of P. dovii. Water samples were taken at a sampling station to determine some parameters of the water quality of the La Palapa shore. The fish were captured with a size 6 hook and the following biometry was performed on each of the organisms: Total length, pattern length, total weight and sex was determined. The digestive tract was separated, from the level of the gills to the end of the intestine, which was weighed with the help of an analytical balance (0.001 g) and preserved in 10% formalin. It was determined that P. dovii in the system aquatic La Palapa presents omnivorous eating habits since there is no preference regarding any food on a population basis. Juvenile individuals show a preference towards zooplankton and unidentified organic matter (MONI), while in adults a greater amount of phytoplankton and MONI was found.
  Both sexes were considered to be generalists, although there are differences in their frequency of occurrence. When making the comparison between sexes, there seems to be a preference on the part of females towards phytoplankton, while males contain more MONI.