Gamete incompatibility is a prezygotic barrier: evidence from experimental hybridization between two recently diverged species of Pacific sea urchins
| Autor: | M. Aminur Rahman, Sang-Go Lee, Y. Arakaki, Fatimah Md. Yusoff |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Echinometra Gonad Hybrid inviability Zoology 04 agricultural and veterinary sciences Aquatic Science Biology Oceanography biology.organism_classification Sperm Echinometra mathaei 03 medical and health sciences 030104 developmental biology medicine.anatomical_structure Human fertilization 040102 fisheries medicine 0401 agriculture forestry and fisheries Gamete Hybrid |
| Zdroj: | Bulletin of Marine Science. 94:1313-1332 |
| ISSN: | 0007-4977 |
| DOI: | 10.5343/bms.2017.1054 |
| Popis: | Four recently-diverged species of Indo-Pacific sea urchins, belonging to the genus Echinometra, occur most abundantly and sympatrically along the coast of Okinawa Island, southern Japan. Among them, the two most distinct species—Echinometra sp. A (Ea) and Echinometra mathaei (Blainville, 1825) (Em)—were examined for potential hybridization through a series of cross-fertilization and hybrid raising experiments. Compared to conspecific crosses, fertilization rates in both heterospecific crosses were very low, even at a very high concentration of sperm. At limited sperm concentration, where conspecific crosses achieved near 100% fertilization, heterospecific crosses had |
| Databáze: | OpenAIRE |
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