نتایج جستجو برای: acropora downingi

تعداد نتایج: 1099  

Journal: :Molecular biology and evolution 1997
D M Odorico D J Miller

The ITS sequences of Acropora spp. are the shortest so far identified in any metazoan and are among the shortest seen in eukaryotes; ITS1 was 70-80 bases, and ITS2 was 100-112 bases. The ITS sequences were also highly variable, but base composition and secondary structure prediction indicate that divergent sequence variants are unlikely to be pseudogenes. The pattern of variation was unusual in...

2016
Jarosław Stolarski Francesca R. Bosellini Carden C. Wallace Anne M. Gothmann Maciej Mazur Isabelle Domart-Coulon Eldad Gutner-Hoch Rolf D. Neuser Oren Levy Aldo Shemesh Anders Meibom

Today coral reefs are threatened by changes to seawater conditions associated with rapid anthropogenic global climate change. Yet, since the Cenozoic, these organisms have experienced major fluctuations in atmospheric CO2 levels (from greenhouse conditions of high pCO2 in the Eocene to low pCO2 ice-house conditions in the Oligocene-Miocene) and a dramatically changing ocean Mg/Ca ratio. Here we...

2013
S. V. Nikam

The present communication deals with description of two ciliate species Anoplophrya chkrawartii and Anoplophrya krishnamurthii n.sp. isolated from the intestine of Perionyx excavatus and Pheretima posthuma collected respectively from different localities of Jalna district. Anoplophrya chkrawartii redescribed here which is previously described by Lalpotu as new species (1979) in Marathwada regio...

Journal: :Molecular ecology 2015
Elizabeth M Hemond Steven V Vollmer

Reef-building corals experience large diel shifts in their environment, both externally due to changes in light intensity, predator activity and prey availability, and internally as a result of diel fluctuations in photosynthesis by their endosymbiotic algae, Symbiodinium. Diel patterns of tentacle behaviour, skeletal growth and gene expression indicate reactions of the coral animal in response...

2016
Thomas Swierts Mark JA Vermeij

Turf algae are becoming more abundant on coral reefs worldwide, but their effects on other benthic organisms remain poorly described. To describe the general characteristics of competitive interactions between corals and turf algae, we determined the occurrence and outcomes of coral-turf algal interactions among different coral growth forms (branching, upright, massive, encrusting, plating, and...

2016
Héloïse Rouzé Gaël Lecellier Denis Saulnier Véronique Berteaux‐Lecellier

Coral disease outbreaks have increased over the last three decades, but their causal agents remain mostly unclear (e.g., bacteria, viruses, fungi, protists). This study details a 14-month-long survey of coral colonies in which observations of the development of disease was observed in nearly half of the sampled colonies. A bimonthly qPCR method was used to quantitatively and qualitatively evalu...

2009
G. Aeby T. Work D. Fenner E. Didonato

Surveys for lesions in corals were conducted at seven sites around Tutuila in June 2004 and January 2005. The objectives of the study were to document the distribution and prevalence of disease in the major genera of corals and crustose coralline algae, systematically describe gross and microscopic morphology of lesions in reef corals and determine whether there are seasonal differences in prev...

2014
Chuya Shinzato Yuki Yasuoka Sutada Mungpakdee Nana Arakaki Manabu Fujie Yuichi Nakajima Nori Satoh

*Correspondence: Chuya Shinzato and Nori Satoh, 1919-1, Tancha, Onna, Okinawa, Japan e-mail: [email protected]; [email protected] The genus Acropora (Scleractinia, Acroporidae) is one of the most widespread coral genera, comprising the largest number of extant species among scleractinian (reef-building) corals. Molecular phylogenetic studies have suggested that A. tenuis belongs to the most basa...

Journal: :PLoS ONE 2008
Steven V. Vollmer David I. Kline

Disease epidemics have caused extensive damage to tropical coral reefs and to the reef-building corals themselves, yet nothing is known about the abilities of the coral host to resist disease infection. Understanding the potential for natural disease resistance in corals is critically important, especially in the Caribbean where the two ecologically dominant shallow-water corals, Acropora cervi...

2013
Tyler Smith John Rooney Tom C. L. Bridge Andrew S Hoey Andrew H Baird

Coral bleaching caused by rising sea temperature is a primary cause of coral reef degradation. However, bleaching patterns often show significant spatial variability, therefore identifying locations where local conditions may provide thermal refuges is a high conservation priority. Coral bleaching mortality often diminishes with increasing depth, but clear depth zonation of coral communities an...

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