+ Translate
+ Most Popular
Advantages and disadvantages of bordeaux mixture and of lime-sulphur used on apples in the growing season
Observations on the Umaria marine bed
10 years of hearing conservation in the Royal Air Force
Chocolate crumb - dairy ingredient for milk chocolate
Effect of daily gelatin ingestion on human scalp hair
Comparison of rice bran and maize bran as feeds for growing and fattening pigs
The composition of pampas-grass (Cortaderia argentea.)
The Accraian Series:
The mechanism of the Liebermann-Burchard reaction of sterols and triterpenes and their esters
Cerebrovascular Doppler ultrasound studies (cv-Doppler)
Toria: PT-303 - first national variety
Hair growth promoting activity of tridax procumbens
Productivity of Pekin x Khaki Campbell ducks
A stable cytosolic expression of VH antibody fragment directed against PVY NIa protein in transgenic potato plant confers partial protection against the virus
Solar treatment of wheat loose smut
Swimmers itch in the Lake of Garda
Bactofugation and the Bactotherm process
The effects of prefrontal lobotomy on aggressive behavior in dogs
Visual rating scales for screening whorl-stage corn for resistance to fall armyworm
Breakdown of seamounts at the trench axis, viewed from gravity anomaly
Kooken; pennsylvania's toughest cave
Recovery of new dinosaur and other fossils from the Early Cretaceous Arundel Clay facies (Potomac Group) of central Maryland, U.S.A
Zubor horny (Bison bonasus) v prirodnych podmienkach Slovensku
The extended Widal test in the diagnosis of fevers due to Salmonella infection
Hair of the american mastodon indicates an adaptation to a semi aquatic habitat

Temporal reproductive isolation and gametic compatibility are evolutionary mechanisms in the Acropora humilis species group (Cnidaria; Scleractinia)

Temporal reproductive isolation and gametic compatibility are evolutionary mechanisms in the Acropora humilis species group (Cnidaria; Scleractinia)

ine Biology 144(3): 7-82

DOI: 10.1007/s00227-003-1209-2

Patterns of interbreeding between individuals are fundamental to the structure and maintenance of evolutionary boundaries between species. In corals, both hybridisation and reproductive isolation appear to be important evolutionary mechanisms. In this study, I examine evolutionary boundaries using morphological, molecular and reproductive criteria within the Acropora humilis species group at Lizard Island on the Great Barrier Reef, Australia. Five species and seven morphs are recognised on the basis of morphological appearance of features traditionally used to identify corals of the genus Acropora. In a molecular phylogenetic analysis, I examine relationships for the mitochondrial DNAs putative control region, using maximum-parsimony and maximum-likelihood methods. The reproductive criteria explore whether species and morphs are reproductively isolated on the basis of temporal or fertilisation barriers. Timing of gamete maturity is surveyed for each species and morph, from the month prior to and 3 months after the mass spawning. Time of spawning is documented at the levels of night and hour of spawning, and time taken for egg-sperm bundles to separate. Laboratory fertilisation experiments tested the potential of species and morphs to interbreed. High levels of intraspecific and extremely low or zero fertilisation levels between the five species indicated that they are valid species. Based on the combined assessment of morphological, molecular and reproductive criteria, A. humilis and A. gemmifera appear to be the most closely related species, which are most closely related to the remaining species in the following order: A. samoensis, A. monticulosa and A. digitifera. Evidence derived from one or more of these criteria suggest that the morphs (1) are at various stages of divergence from the species with which they share morphological characters, and (2) may indicate possible zones of speciation and hybridisation. Identification of morphs avoided the possibility of taxonomic error and was essential for accurate interpretation of evolutionary boundaries. Confirmation of morphology as an informative character of evolutionary boundaries is of great significance because most coral research projects rely on morphology as the primary tool for identification of species.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 018146462

Download citation: RISBibTeXText

Related references

Temporal reproductive isolation and gametic compatibility area evolutionary mechanisms in the Acropora humilis species group (Cnidaria; Scleractinia). Marine Biology (Berlin) 144(3): 567-582, 2004

Induced anti-predator responses of the green mussel, Perna viridis(L.), on exposure to the predatory gastropod, Thais clavigera Kster, and the swimming crab, Thalamita danae Stimpson. Marine Biology 144(4): 675-684, 2004

Species boundaries within the Acropora humilis species group (Cnidaria; Scleractinia): A morphological and molecular interpretation of evolution. Coral Reefs 22(2): 155-166, 2003

Examination of species boundaries in the Acropora cervicornis group (Scleractinia, Cnidaria) using nuclear DNA sequence analyses. Molecular Ecology 9(9): 1363-1373, 2000

The mitochondrial genome of Acropora tenuis (Cnidaria; Scleractinia) contains a large group I intron and a candidate control region. Journal of Molecular Evolution 55(1): 1-13, 2002

The adaptive significance of mechanical properties versus morphological adjustments in skeletons of Acropora palmata and Acropora cervicornis (Cnidaria, Scleractinia). Proceedings of the International Coral Reef Symposium (4): 121-128 Volume 2, 1982

The evolutionary history of the coral genus Acropora (Scleractinia, Cnidaria) based on a mitochondrial and a nuclear marker: reticulation, incomplete lineage sorting, or morphological convergence?. Molecular Biology and Evolution 18(7): 1315-1329, 2001

Possible natural hybridization of two morphologically distinct species of Acropora (Cnidaria, Scleractinia) in the Pacific: fertilization and larval survival rates. Plos one 8(2): E56701, 2013

Spatial and size-frequency distribution of Acropora (Cnidaria : Scleractinia) species in Chinchorro Bank, Mexican Caribbean: implications for management. Coral Reefs 26(3): 671-676, 2007

Nucleotide sequencing of highly repetitive dna from seven species in the coral genus acropora cnidaria scleractinia implies a division contrary to morphological criteria. Marine Biology (Berlin) 110(3): 323-328, 1991

Variation in the ribosomal internal transcribed spacers and 5.8S rDNA among five species of Acropora (Cnidaria; Scleractinia): patterns of variation consistent with reticulate evolution. Molecular Biology and Evolution 14(5): 465-473, 1997

Sexual reproduction in acropora isopora species coelenterata scleractinia i. acropora cuneata and acropora palifera on heron island reef great barrier reef australia. Marine Biology 91(3): 291-310, 1986

The complete mitochondrial genome of Acropora aculeus (cnidaria, scleractinia, acroporidae). Mitochondrial Dna. Part A Dna Mapping Sequencing and Analysis 27(6): 4276-4277, 2016

New species and a new species-group of the coral genus Acropora (Scleractinia: Astrocoeniina: Acroporidae) from the Indo-Pacific locations. Invertebrate Taxonomy 84: 961-988, 1994

New species and a new species-group of the coral genus Acropora (Scleractinia: Astrocoeniina: Acroporidae) from Indo-Pacific locations. Invertebrate Taxonomy 8(4): 961-988, 1994