Abstract

AMARU CHAMBILLA, Glicerio R.; YUJRA FLORES, Ernesto  and  GAMARRA PERALTA, Cesar. Hermafroditism in Orestias Agassi (carachi gris) from Titicaca lake in Puno, Peru: Case Report. Rev. investig. Altoandin. [online]. 2016, vol.18, n.4, pp.467-474. ISSN 2313-2957.  http://dx.doi.org/10.18271/ria.2016.239.

The hermaphroditism in the nature of the fish, result in some species a strategy of reproductive behaviour but in general, its frequency of apparition result a event biological of character rare, for not always such conduct is associated to the same conditions environmental. The objective of the present research was to describe hermaphroditism in Orestias agassi of Titicaca lake in Puno-Peru as a case report. Since 2009, Laboratory Continental of Puno records as activities the monitoring of fishery, where is evaluated inside of its main indicators the total length, standard length, total weight and bowel weight (gonads, stomach and liver). In May of 2014, corresponding to the zone of Villa Santiago-District of Pomata, Province of Chucuito, in laboratory conditions was made a probabilistic random sampling (92 individuals), to which there was an interval rank of 8,6 to 15,2cm of total length. It is identified through the observation of structured biometric analysis, an exemple with presence of both reproductive gonads, which are of 12,3cm in total length and total weight of 29,94g. It has not been observed significant statistical differences with relation to the remainder of individuals identified in the same class of size interval (octave). It is concluded that of 3,302 individuals of the species orestias agassi analyzed in eight years, it is the first case that is reported with hermaphroditism.

Keywords : hermaphroditism; Orestias agassi; Titicaca Lake; Puno-Peru.

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