Unitus Labs

Esiti del progetto PRIN EUFORICC - <em>Establishing Urban FORest based solutions In Changing Cities: </em><strong>a) Linee Guida</strong> - Esperienze di ricerca e indicazioni operative dedicate alla realtà degli ambienti urbani italiani e mediterranei per la realizzazione, manutenzione e riqualificazione di foreste urbane e infrastrutture verdi. <strong>b) Indicatori </strong>- Indicatori per il monitoraggio della performance delle foreste urbane nell’ottica dell’ottimizzazione dei servizi ecosistemici e della minimizzazione dei disservizi. <strong>c) Protocolli e Modelli </strong>- Compendio di metodologie pratiche e modelli per il supporto nel monitoraggio degli indicatori e nella gestione e pianificazione del verde urbano.

Abstract Accurate, unbiased phenotypic performance of progeny is critical for the development of fish‐breeding programs, and identification of possible environmental factors affecting phenotypes is an important aspect of genetic analysis. Catfish progeny can be produced by either natural pond‐spawning or hormone‐induced strip‐spawning. We determined the effects of pond‐spawning versus strip‐spawning on fingerling weight, harvest weight, and carcass yield of channel catfish, Ictalurus punctatus, progeny. Progeny from 65 pond‐spawned full‐sib families and 29 strip‐spawned full‐sib families were reared in separate family tanks, then tagged as fingerlings, and then stocked communally in earthen ponds and harvested at ~17 months posthatch. A sample of fish from each full‐sib family was measured for carcass yield. Fingerling weight was not affected by sex or spawning type. Harvest weight was higher for males than for females and higher for pond‐spawned fish than for strip‐spawned fish. Carcass yield was higher for females than for males and higher for pond‐spawned fish than for strip‐spawned fish. Results indicate that strip‐spawning had substantial negative effects on progeny harvest weight and carcass yield. Accounting for the effect of strip‐spawning in breeding programs and the potential effects of strip‐spawning on commercial catfish production should be determined.

The Kurbskii-Groznyi Apocrypha: The Seventeenth-Century Genesis Of The "Correspondence" Attributed To Prince A. M. Kurbskii And Tsar Ivan IV. By Edward L. Keenan. With an appendix by Daniel C. Waugh. Russian Research Center Studies, 66. Cambridge: Harvard University Press, 1971. xii, 241 pp. $10.00. - Volume 31 Issue 4