scholarly journals Latitudinal variation in sexual dimorphism in life-history traits of a freshwater fish

2016 ◽  
Vol 7 (2) ◽  
pp. 665-673 ◽  
Author(s):  
Satu Estlander ◽  
Kimmo K. Kahilainen ◽  
Jukka Horppila ◽  
Mikko Olin ◽  
Martti Rask ◽  
...  
Keyword(s):  
Life History ◽  
Sexual Dimorphism ◽  
Freshwater Fish ◽  
Life History Traits ◽  
Latitudinal Variation

Sexual dimorphism in body size and life‐history traits in a population ofTriturus alpestris alpestris

2004 ◽  
Vol 71 (sup2) ◽  
pp. 117-120 ◽  
Author(s):  
Elena Marzona ◽  
Daniele Seglie ◽  
Cristina Giacoma
Keyword(s):  
Life History ◽  
Body Size ◽  
Sexual Dimorphism ◽  
Life History Traits

Latitudinal variation of life-history traits of an exotic and a native impatiens species in Europe

2017 ◽  
Vol 81 ◽  
pp. 40-47 ◽  
Author(s):  
Kamal Prasad Acharya ◽  
Pieter De Frenne ◽  
Jörg Brunet ◽  
Olivier Chabrerie ◽  
Sara A.O. Cousins ◽  
...  
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Latitudinal Variation

scholarly journals Scientific Methods to Understand Fish Population Dynamics and Support Sustainable Fisheries Management

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 574
Author(s):  
Shewit Gebremedhin ◽  
Stijn Bruneel ◽  
Abebe Getahun ◽  
Wassie Anteneh ◽  
Peter Goethals
Keyword(s):  
Developing Countries ◽  
Population Dynamics ◽  
Life History ◽  
Freshwater Fish ◽  
Life History Traits ◽  
Stock Assessment ◽  
Freshwater Ecosystems ◽  
Sustainable Fisheries ◽  
Fish Stocks ◽  
The World

Fisheries play a significant role in the livelihoods of the world population, while the dependence on fisheries is acute in developing countries. Fisheries are consequently a critical element for meeting the sustainable development (SDG) and FAO goals to reduce poverty, hunger and improve health and well-being. However, 90% of global marine fish stocks are fully or over-exploited. The amount of biologically unsustainable stocks increased from 10% in 1975 to 33% in 2015. Freshwater ecosystems are the most endangered ecosystems and freshwater fish stocks are worldwide in a state of crisis. The continuous fish stock decline indicates that the world is still far from achieving SDG 14 (Life Below Water), FAO’s Blue Growth Initiative goal and SDG 15 (Life on Land, including freshwater systems). Failure to effectively manage world fish stocks can have disastrous effects on biodiversity and the livelihoods and socio-economic conditions of millions of people. Therefore, management strategies that successfully conserve the stocks and provide optimal sustainable yields are urgently needed. However, successful management is only possible when the necessary data are obtained and decision-makers are well informed. The main problem for the management of fisheries, particularly in developing countries, is the lack of information on the past and current status of the fish stocks. Sound data collection and validation methods are, therefore, important. Stock assessment models, which support sustainable fisheries, require life history traits as input parameters. In order to provide accurate estimates of these life history traits, standardized methods for otolith preparation and validation of the rate of growth zone deposition are essential. This review aims to assist researchers and fisheries managers, working on marine and freshwater fish species, in understanding concepts and processes related to stock assessment and population dynamics. Although most examples and case studies originate from developing countries in the African continent, the review remains of great value to many other countries.

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