Fish?Conservation?and?
LifeCONS?486
history:?Reproduction
Ross?Chapter?3
Management
?Reproduction?topics
?Reproduction
–Fecundity
–Life?history?strategies
?Reproductive?Schedules
–Semelparityvs?iteroparity
Major?theme:?Linking?science?to?conservation?&?management
?????
PhysiologyBehaviour
Population?ecologyEcosystem?ecologyHabitat?data?(limnology,?oceanography)?Life?history
?Fisheries?
exploitation?data?Applied?life?history?data?Human?
dimensions:?socio‐economic?data
Basic?science
Applied?science
?Protecting?populations??&?habitats?Restoring?populations?&?habitats
ConservationManagement
?Harvest?regulations?Managing?fisheries?&?habitats
Introduction
?Ingested?energy?left?over?after?paying?off?metabolic?costs?is?placed?into?growth?and?reproduction
?Reproductive?and?growth?traits?vary?among?species,?populations,?and?individuals
–Differences?often?due?to?selective?pressures?&?environmental?conditions?and?habitats?
?Differences?best?understood?by?considering?how?these?traits?might?be?adaptive
Fecundity
?Fecundity:?the?number?of?eggs?per?female
?Offspring?production:?related?to?number?of,?and?the?fecundityof,?females
–Males?are?pretty?useless:?fecundity?not?related?to?number?of?males?or?amount?of?sperm?produced
鱼类养护和管理 (3)
