Standardized Maturity Stages for

Live-Bearing Sharks

Determining the maturity state of sharks in the field is difficult.  The following summary is offered to help standardize observations and reportage of gonadal maturity in ovoviviparous and viviparous sharks.  Once familiar with the stage categories proposed here, maturity state of sharks examined in the field can be determined accurately and scored quickly.

Males

Juvenile

 

 

Subadult

 

 

Adult

 

 

Active

 

 

Females

Ovarian Stages

Juvenile

 

Ripening

 

Ripe

 

Uterine Stages

Developing

 

 

Differentiating

 

Expecting

 

Postnatal

 

ReefQuest Centre for Shark Research
Text and illustrations R. Aidan Martin
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