J
J.R. Pérez
Researcher at University of León
Publications - 21
Citations - 279
J.R. Pérez is an academic researcher from University of León. The author has contributed to research in topics: Crayfish & Austropotamobius pallipes. The author has an hindex of 11, co-authored 21 publications receiving 267 citations.
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The possibilities for artificial incubation of white-clawed crayfish (Austropotamobius pallipes Lereboullet) eggs: comparison between maternal and artificial incubation.
TL;DR: Comparisons between maternal andificial incubation demonstrated the suitability of the tested system for artificial incubation for eggs of this species, during a period of 42% of the total duration of the embryonic development.
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Effects of shelter type and food supply frequency on survival and growth of stage-2 juvenile white-clawed crayfish (Austropotamobius pallipes Lereboullet) under laboratory conditions
TL;DR: Two shelter substrates (fibre-cement sheets and PVC pipes) and two food supply frequencies (once and twice daily) were tested on white-clawed juvenilecrayfish in two separate experiments performed under laboratory conditions to reduce the agonistic behaviour of juvenile crayfish.
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Effects of stripping time on the success of the artificial incubation of white-clawed crayfish, austropotamobius pallipes (lereboullet), eggs
TL;DR: It is shown that it is possible to attain acceptable survival rates up to juvenile stage 2, even when eggs have been detached at the earliest time, in such a way that artificial incubation is used for more than three-quarters of the total duration of the embryonic development.
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Live feed as supplement from the onset of external feeding of juvenile signal crayfish (Pacifastacus leniusculus Dana. Astacidae) under controlled conditions
TL;DR: It can be deduced that live feed can be the source of some nutritional factors needed for astacid juvenile crayfish from the onset of external feeding to guarantee the viability during the first months of life.
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Effects of different thermal treatments during embryonic development on the artificial incubation efficiency of crayfish (Austropotamobius pallipes Lereboullet) eggs. Control of the embryogenetic duration and implications for commercial production
TL;DR: It is concluded that water cooling (an expensive management procedure) is not necessary in astacid breeding centres provided that egg development takes place at moderately low temperatur...