Changes in ide Leuciscus idus (L.) females’ reproductive parameters after stimulation with carp pituitary homogenate (CPH) and Ovopel: the effect of domestication?

Abstract

Three groups (wild-WS, semi-pond-SPS, and pond-cultured-PS) of ide Leuciscus idus (L.) were examined. Each group consisted of 30 females and 10 males, aged 5-8 years. All groups were stimulated with two agents: carp pituitary homogenate (CPH) and a synthetic hormonal preparation Ovopel. The amount of ovulating females decreased in conjunction with females' domestication level, mainly because of very low efficacy of CPH for pond-reared ide stimulation. The percentage of ovulating females stimulated with Ovopel (97.0 %) was significantly higher comparing to CPH (63.0 %). No significant differences were found in latency time between the groups but spawning synchronization increased in conjunction with ide domestication. The positive correlation between domestication level and latency time, i.e., the higher the domestication level, the higher the latency time, was stated. No significant differences were found in PGSI as well as in total volume of obtained eggs, but groups differed significantly in the number of dry eggs and in number of swollen egg. Significant negative correlation between domestication level and number of swollen eggs, i.e., the higher the domestication level, the lower the number of eggs, was detected. The survival rate at the eyed stage was the highest in WS group (60.4 %) and PS group (57.7 %), and was significantly higher than in SPS group (51.8 %). Eggs obtained after CPH stimulation had higher survival rate at the eyed-egg stage

Early development and allometric growth patterns in ide Leuciscus idus (Linnaeus 1758)

“…Studies on the various culturing aspects of rheophilic cyprinids have received increased interest in recent years (Krejszeff et al., ; Kucharczyk et al., ; Gomułka et al., ; Targońska et al., ; Żarski et al., ; Cieśla et al., ) owing to the increasing demand for high quality juveniles for restocking purposes. Supplementing riverine populations with cultured rheophilic fish is a common management practice to conserve threatened species and support natural recruitment (Cowx, ; Bolland et al., ).…”

Sperm characteristics of chubLeuciscus cephalus(L.) collected in artificial condition after Ovopel and Ovaprim treatment

“…In the last few years, there has been much attention on the development of reproduction biotechnology of rheophilic fish belonging to the genus Leuciscus such as ide Leuciscus idus (L.), dace Leuciscus leuciscus (L.) and chub Leuciscus cephalus (L.), (Krejszeff, Kucharczyk, Kupren, Targońska, Mamcarz, Kujawa & Ratajski ; Krejszeff, Targońska, Żarski & Kucharczyk , ; Targońska, Żarski, Krejszeff & Kucharczyk ; Cieśla, Jończyk, Gozdowski, Śliwiński, Rechulicz & Andrzejewski ). The chub is an ubiquitous species living in European rivers and most often rapids with gravelly bottoms.…”

Untitled

“…Differences can be observed not only between related species but also between populations or breeding stocks (e.g. laboratory stocks) of the same species (Leskela & Kucharczyk, 1995;Brooks et al, 1997;Cieśla et al, 2014).…”