ragosh scrie:
De cand pescuiesc la crap am observat ca pe majoritatea baltilor, canalelor sau raurilor pescuite, intervalul optim in care poti prinde un crap se afla undeva intre 21:00 si 9:00 indiferent de conditiile de pescuit. Aproximez undeva la 90% din capturi le-am avut in intervalul acesta. Si de aici intrebarea mea. Stie cineva motivul in spatele obiceiului asta de hranire?
Cred ca statistica asta e valabila doar in cazul tau, nu e valabila in general. Am intalnit lacuri pe care se prindea mai mult peste ziua decat noaptea. Doar in perioadele foarte calde nu se mai prindea peste ziua, dar faptul ca nu se prindea s-ar putea sa fi avut o alta explicatie decat faptul ca pestele nu se hranea. Poate ca nu se hranea pe fundul apei, unde pescuia toata lumea. Daca s-ar fi pescuit intre ape, cine stie, poate ca s-ar fi prins si ziua.
Pe acelasi lac, crapii pot avea tipare de hranire diferite de la un anotimp la altul sau de la un an la altul. Un exemplu e Sectorul A de la Varlaam, unde in 2013, cand am inceput sa testez lacul, nu cred ca am prins decat cativa crapi noaptea, iar crapii respectivi i-am prins in noiembrie. In rest, toate capturile s-au inregistrat pe lumina, inclusiv cele din timpul verii. In 2014, cand lacul s-a deschis pentru public, s-a prins foarte bine noaptea... si se prinde in continuare.
ragosh scrie:
O a doua intrebare ar fi daca ati observat alt interval de hranire concentrat mai mult pe timpul zilei pe alte lacuri si ce tipologie au lacurile acelea?
Hranirea pestelui e influentata de multi factori, pe care cu greu ii vom putea analiza in detaliu pe forum... Daca citesti in engleza, iti recomand cartea lui John Wood "Carp Fishing Science", care contine multa informatie stiintifica interesanta, scrisa pe intelesul pescarilor. Ai mai jos un pasaj care poate fi relevant in discutie.
Based on the information presented, the carp has shown a preference in its environment for the presence of food availability and comfortable conditions. These conditions principally involve the presence of adequate levels of oxygen and a temperature which allows effective food digestion and a level of activity akin to efficient energy expenditure, with a moderately greater importance given to oxygen availability rather than temperature. This means that despite the lower requirement of carp than other fish species, the carp will still frequent areas where oxygen is in greater availability since it permits more efficient feeding and digestion. However, as can be observed in the fishing situation, carp will feed up to a point where temperature increase restricts the capacity for gas saturation in the water column and after that, feeding level is reduced and the fish will prefer cooler areas or reduce activity until the temperature drops such as occurs at night.
The ability of carp to feed at night is enhanced by their ability to distinguish near infra-red, with this capacity suggesting that particularly when there is a full moon or a very starry sky, the fish is able to feed more effectively by complementing the senses of smell and taste with that of vision in order to locate food items. Therefore these periods in particular should be exploited by the angler since carp should be expected to feed with less caution during such conditions. The evidence suggests that the other periods of important feeding activity of the carp are during the twilight hours, due to the existence of the pineal gland, which as with many fish species produces feeding stimulation due to regulation of the seratonin/melatonin balance in the fish. This can also be considered during overcast days which probably have a similar effect on the appetite of the carp.Imi pare rau ca nu am timp acum sa postez si o traducere... daca se ofera cineva, ar fi perfect.