-A field population of Microtus townsendii was trapped concurrently with live-traps and pitfall traps throughout the spring and summer of 1975. The population was at peak densities, with a maximum of 519 voles per acre. The number enumerated by pitfalls was up to two times larger than the number enumerated by live-traps. Capture of a large number of young in pitfalls indicated that mortality wa...

Abstract Field experiments were carried out in the reclaimed land east of Cairo-Alexandria Desert Road, Village Wardan, Giza Governorate, Egypt, to evaluate impact using nano-gels pheromone for first time on attraction RPW adults by traps compared control which is normal during two successive seasons 2018 and 2019. Also, this study aimed compare efficacy types trap, traditional trap (type 1) dr...

The aim of this study is to determine the effect mesh size on catches small crab (Portunus sp.) both in number, carapace length (CL), and catchability between modified control collapsible pot. This used wrapping net (PE) from 2.5 cm (± 1 inch) 7.0 inches) with 20 units repetitions (trips). results showed that different has a significant catch However, 2.5-inch size- larger = 42 individuals (85....

Gillnets are size-selective fishing gears commonly used by industrial and small-scale fishers, so understanding selectivity can aid fisheries management identifying suitable mesh sizes to optimize catches of target species while reducing bycatch. Few size parameters have been estimated for sharks, with even fewer rays. Size selection were seven sharks two rays from the Queensland East Coast Ins...

Abstract Catches have remained relatively high in the Gulf of Thailand and Bohai Sea, China, despite severe biomass declines (around 95%) evidenced by fishery-independent surveys. Such production at very low stock sizes is not predicted simple-surplus theory, but can be explained age-structured models that predict recruitment rates even when per recruit (BPR) has been drastically reduced. Recru...