نتایج جستجو برای: حداکثر محصول قابل برداشت msy

تعداد نتایج: 150164  

2011
Nandina Paria Terje Raudsepp Alison J. Pearks Wilkerson Patricia C. M. O'Brien Malcom A. Ferguson-Smith Charles C. Love Carolyn Arnold Peter Rakestraw William J. Murphy Bhanu P. Chowdhary

Studies of the Y chromosome in primates, rodents and carnivores provide compelling evidence that the male specific region of Y (MSY) contains functional genes, many of which have specialized roles in spermatogenesis and male-fertility. Little similarity, however, has been found between the gene content and sequence of MSY in different species. This hinders the discovery of species-specific male...

2008
Mark Terceiro

Scup 293 Executive Summary The current biomass reference point for scup relies on the index of Spawning Stock Biomass (SSB) from the NEFSC spring trawl survey. Previous reviews of the stock assessment have indicated that while this index may be the most reliable fishery independent index of scup SSB, it is subject to a relatively high degree of inter-annual variability that reduces its utility ...

2007
Qingyi Yu Shaobin Hou Alex Feltus Xiue Wang Weiwei Jin Rachel L. Skelton Maqsudul Alam Boris Vyskot

Sex chromosomes in Xowering plants evolved recently and many of them remain homomorphic, including those in papaya. We investigated the chromosomal location of papaya’s small male speciWc region of the hermaphrodite Y (Y) chromosome (MSY) and its genomic features. We conducted chromosome Xuorescence in situ hybridization mapping of Y-speciWc bacterial artiWcial chromosomes (BACs) and placed the...

2013
R. M. Cook

There is considerable interest in the state of the world’s natural fishery resources. The paper by Froese et al. (2012) is a recent example of applying a set of ad hoc decision rules to a time series of catch data in order to assign the world’s fisheries to categories of exploitation and hence make generalisations about their current status. They conclude that the percentage of stocks that are ...

Journal: :Biology letters 2010
Henrik Sparholt Robin M Cook

The theory of maximum sustainable yield (MSY) underpins many fishery management regimes and is applied principally as a single species concept. Using a simple dynamic biomass production model we show that MSY can be identified from a long time series of multi-stock data at a regional scale in the presence of species interactions and environmental change. It suggests that MSY is robust and calcu...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
Stuart Pimm Peter Raven Alan Peterson Cagan H Sekercioglu Paul R Ehrlich

Unqualified, the statement that approximately 1.3% of the approximately 10,000 presently known bird species have become extinct since A.D. 1500 yields an estimate of approximately 26 extinctions per million species per year (or 26 E/MSY). This is higher than the benchmark rate of approximately 1 E/MSY before human impacts, but is a serious underestimate. First, Polynesian expansion across the P...

2017
Beniamino Trombetta Eugenia D’Atanasio Fulvio Cruciani

The male-specific region of the human Y chromosome (MSY) is characterized by the lack of meiotic recombination and it has long been considered an evolutionary independent region of the human genome. In recent years, however, the idea that human MSY did not have an independent evolutionary history begun to emerge with the discovery that inter-chromosomal gene conversion (ICGC) can modulate the g...

2013
Rainer Froese Dirk Zeller Kristin Kleisner Daniel Pauly

In a previous contribution to this journal (Froese et al. 2012), we refuted criticism of a simple method (Froese and Kesner-Reyes 2002) that derives information about the status of global stocks from global catch data. This method assumes that, for a given stock, the ratio of current catches to previous maximum catches (Cmax) is indicative of the likely current exploitation status of the stock....

Journal: :Mathematical biosciences 2016
Zafer Kanik Serkan Kucuksenel

One of the main goals stated in the proposals for the Common Fisheries Policy (CFP) reform was achieving maximum sustainable yield (MSY) for all European fisheries. In this paper, we propose a fishing rights allocation mechanism or management system, which specifies catch limits for individual fishing fleets to implement MSY harvesting conditions in an age-structured bioeconomic model. An age-s...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Krzysztof Ginalski Leszek Rychlewski David Baker Nick V Grishin

The complete sequence of the male-specific region of the human Y chromosome (MSY) has been determined recently; however, detailed characterization for many of its encoded proteins still remains to be done. We applied state-of-the-art protein structure prediction methods to all 27 distinct MSY-encoded proteins to provide better understanding of their biological functions and their mechanisms of ...

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