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Functional Manipulation of Maternal Gene Products Using In Vitro Oocyte Maturation in Zebrafish
10:39

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Published on: April 22, 2017

Maternal effects in fish populations.

Bridget S Green1

  • 1Marine Research Laboratory, Tasmanian Fisheries and Aquaculture Institute, University of Tasmania, Private Bag 49, Tasmania, 7001 Australia.

Advances in Marine Biology
|October 22, 2008
PubMed
Summary
This summary is machine-generated.

Female fish contribute significantly to population dynamics through non-genetic maternal effects. Understanding female demographics is crucial for sustainable fisheries management and conservation efforts.

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Area of Science:

  • Ecology
  • Evolutionary Biology
  • Fisheries Science

Background:

  • Maternal effects, or non-genetic contributions to offspring fitness, are increasingly recognized as vital to population dynamics across taxa.
  • In fisheries, the demographic structure of adult fish, particularly females, influences future year-class formation.
  • Traditional fisheries management often overlooks individual female variation in spawning, potentially impacting stock health.

Purpose of the Study:

  • To review the influence of female traits and environmental factors on offspring number and quality via maternal effects.
  • To highlight the importance of female demographics in fisheries resource management.
  • To underscore the need for considering inter-female differences in harvesting and breeding strategies.

Main Methods:

  • Literature review synthesizing research on maternal effects in animal and plant populations.
  • Analysis of fisheries management practices and their impact on female fish populations.
  • Examination of how female traits and environmental conditions influence reproductive output.

Main Results:

  • Female demographics and maternal effects significantly impact recruitment magnitude and fluctuation in fish populations.
  • Selective harvesting of larger, older females can negatively affect stock productivity and resilience.
  • Inter-female variation in offspring quality and quantity is a critical, yet often overlooked, factor.

Conclusions:

  • Integrating female demographics and maternal effects into fisheries management is essential for sustainable practices.
  • Understanding female contributions is key to effective conservation and aquaculture strategies.
  • Future research should focus on quantifying maternal effects for improved population modeling.