''Ibla'' is a genus of
barnacle
Barnacles are arthropods of the subclass (taxonomy), subclass Cirripedia in the subphylum Crustacean, Crustacea. They are related to crabs and lobsters, with similar Nauplius (larva), nauplius larvae. Barnacles are exclusively marine invertebra ...
. In 1848,
Charles Darwin
Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English Natural history#Before 1900, naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all speci ...
studied the genus and found species with hermaphrodites and tiny males. In this genus the number
androdioecious species is uncertain because some authors use the words
female
An organism's sex is female ( symbol: ♀) if it produces the ovum (egg cell), the type of gamete (sex cell) that fuses with the male gamete (sperm cell) during sexual reproduction.
A female has larger gametes than a male. Females and ...
and
hermaphrodite
A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic.
The individuals of many ...
interchangeably.
Species
Species in this genus include:
*''
Ibla cumingi''
*''
Ibla quadrivalvis''
*''
Ibla atlantica''
*''
Ibla sibogae''
*''
Ibla pygmaea''
*''
Ibla idiotica''
*''
Ibla cuvieriana''
References
*Leach, M.D. (1825). XXIII. A tabular view of the Genera composing the Class Cirripedes, with Descriptions of the Species of Otion, Cineras, and Clyptra. ''The Zoological journal.'' 2: 208-215. page(s): 209
cited in WoRMS http://www.marinespecies.org/aphia.php?p=taxdetails&id=205861
*WoRMS (2021). Ibla Leach, 1825. Accessed at: http://marinespecies.org/aphia.php?p=taxdetails&id=205861
{{Taxonbar, from1=Q15896258, from2=Q21216255
Barnacles