Data about Bivalvia

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Physical Description

 
sexual dimorphism
  • sexual dimorphism
    Sexual dimorphism is a phenotypic difference between males and females of the same species. The prototypical example is for differences in characteristics of reproductive organs. Other possible examples are for secondary sex characteristics, body size and morphology, ornamentation and behavior.
    http://www.owl-ontologies.com/unnamed.owl#Dimorphism
Additional detail
dwarf males
Fairbairn, 2013  
Additional detail
female larger
Fairbairn, 2013  
Additional detail
sexes shaped differently
Fairbairn, 2013  

Life History and Behavior

 
reproduction
Additional detail
dioecious
  • dioecious
    Dioecy (Greek: "two households"; adjective form: dioecious) is characterised by a species having distinct male and female organisms.
    http://eol.org/schema/terms/dioecious
Fairbairn, 2013  
Additional detail
sequential hermaphrodite
  • sequential hermaphrodite
    Some members of this lineage are sequential hermaphrodites; they are born as one sex, but can later change into the opposite sex.
    http://www.owl-ontologies.com/unnamed.owl#Sequential_hermaphrodite
Fairbairn, 2013  
Additional detail
simultaneous hermaphrodite
  • simultaneous hermaphrodite
    Some members of this lineage are simultaneous hermaphrodites; a condition of hermaphroditic animals (and plants) in which the reproductive organs of both sexes are present and functional at the same time.
    http://www.owl-ontologies.com/unnamed.owl#Simultaneous_hermaphrodite
Fairbairn, 2013  

Notes

 
percent species currently described
Additional detail
64
Appeltans et al, 2012  
 
percent synonyms
Additional detail
55
Appeltans et al, 2012  
 
described (accepted)
Additional detail
9,000
Appeltans et al, 2012  
 
total unknown species (expert opinion)
Additional detail
5,000
Appeltans et al, 2012  
 
undescribed species present in museum collections
Additional detail
2,000
Appeltans et al, 2012  
 
undiscovered morphospecies (not yet collected)
Additional detail
3,000
Appeltans et al, 2012  
 
percent surveyed species not yet known to science
Additional detail
0.31
Appeltans et al, 2012  

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