Most mutations that compromise meiotic recombination or synapsis in mouse spermatocytes result in arrest and apoptosis at the pachytene stage of the first meiotic prophase.Two main mechanisms are thought to trigger arrest: one independent of the double-strand breaks (DSBs) that initiate meiotic recombination, and another activated by persistent rec
This paper gives data on smolt age and length of Atlantic salmon and sea trout in the Orkla river in the period 1979 - 1981.The smolt Above Ground Product (Ladders) age of the salmon was significantly higher in 1979 (4.1 years) as opposed to 3.4 and 3.3 years in 1980 and 1981, respectively.However, the average length of the salmon smolts did not di
Reliable estimates of population size are fundamental in many ecological studies and biodiversity conservation.Selecting appropriate methods to estimate abundance is often very difficult, especially if data are scarce.Most studies concerning the reliability of different estimators used simulation data based on assumptions about capture variability