Newsletter 9 of 1 July 2015

JOINT ACTIVITIES CONFLUPO - LIFE BARBIE

In the previous issue of our newsletter, it was reported that between the end results of the meeting "The LIFE MEET UP", there was the will to achieve a closer cooperation between the different projects.

The first step in this direction took place just between the two projects that have organized the meeting day - CONFLUPO and Life BARBIE - which have as design intent also that of breeding in captivity, marking and release of endangered species.

Threatened fish species on which operates the Life CONFLUPO are 5 - Cobice sturgeon, Pigo, roach, savetta - besides the common barbel which is the target species for Life BARBIE together barbel canine.

 

On June 9, a technical delegation of Life BARBIE, headed by Professor Francesco Marzano Nonnis of the Department of Biosciences, University of Parma, visited the structures of the Lombard Park of the Ticino Valley, partners CONFLUPO and responsible for the program breeding in captivity, to know our techniques developed specifically for barbel.

We remember how these species, except for the sturgeon, although threatened have no direct commercial interest; the whole process of captive breeding, weaning and breeding of larvae is still a purely experimental phase.

The Ticino Park, in the context of this project Life, has improved the technique of reproduction and breeding for the Cobice sturgeon, and has successfully developed new experimental techniques for other 3 species (barbel, Pigo and savetta), while it is still trying to solve some problems on stage of captive breeding of roach.

As regards the common barbel have been illustrated to the delegation of Life Barbie the techniques used in the phases of artificial reproduction: squeezing of the subjects and treatment of the eggs until they hatch inside the bottles of Zugg, stages of weaning of the larvae before with invertebrates and then with the different feed and farming systems of young people to get them to measure to the mark (approx 10-12 cm) and the subsequent release into the wild.

This last important step was particularly problematic, and only thanks to several experiments it was possible to understand what were the limiting factors that reduced the growth of young people despite the administering of suitable feed as quantity and type.

 

On the other hand, the technicians of Life BARBIE, during a successive meeting, provided indications on the possible techniques to use for external markings of the young species easily seen before the release, based on their many years of experience.

 

In fact, up until now had been used systems such as the microchip subcutaneous or marking temporarily using inks, while the need of Life CONFLUPO is to be able to release the young fish marked with a marking system that is easily seen, long-lasting and which does not implies problems for normal behaviors of the individual.

 

In this way, through the activation of a monitoring network between fishermen and operators wildlife would be possible to have feedback about the spread and survival of the released subjects.

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