scholarly journals Physiological responses of scleractinian corals in marginal habitat

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Funty Polapa ◽  
SHINTA WERORILANGI ◽  
SUHARTO M. ALI ◽  
JAMALUDDIN JOMPA

Abstract. Polapa FS, Werorilangi S, Ali SM, Jompa J. 2021. Physiological responses of scleractinian corals in marginal habitat. Biodiversitas 22: 4011-4018. This study aims to analyze physiological differences in corals in marginal habitats. Under different conditions, the production/respiration (P/R) ratio and photobiology of various coral genera were compared. Samples were taken from three coral reef zones representing typical reef habitats and from the mangrove ecosystem as a marginal habitat. Surveys revealed two coral genera surviving in extreme conditions (marginal habitat). The P/R ratio measurements indicated that corals living in the mangrove ecosystem tend to be heterotrophic. This was supported by observations of colonies with tentacles extended from the corallites. Furthermore, Porites living in the mangrove habitat consume more O2 directly than saving it for other purposes, such as growth. The genus Dipsastraea exhibited elevated zooxanthellae density in the mangrove ecosystem, whereas Porites exhibited similar densities in both ecosystems.

2018 ◽  
Vol 1 (2) ◽  
pp. 19
Author(s):  
Edwin Setiawan ◽  
Farid Kamal Muzaki ◽  
Nova Maulidina Ashuri

Sponges (Porifera) are benthic sessile animals that have an important role in coastal ecosystems. Mangrove habitat is an example of a coastal ecosystem that can be inhabited by sponges. Research diversity on shallow water sponges in mangrove areas in Indonesia or even large scale such as the Indo-Pacific area are still relatively underestimated because of an extreme difference tidal factors. For this reason, we aimed to research a diversity of shallow water sponges in mangrove Indonesia, especially in  East Java Province to enrich and inform additional data on its biodiversity. Research on shallow water sponges in mangrove was conducted from June 2017 to January 2018 at two stations located on the coast of Labuhan Village, Sepulu District, Bangkalan Regency, Madura - East Java. Mangrove areas are consisted of Sonneratiaarea in the west (B) and Rhizophoramangroves in the east (R). There were six sponge genera identified, namely Spongia, Dysisdea, Lendelfedia, Dactylospongia, Cynachyrellaand one unidentified genus. Sonneratiamangrove was inhabited by of five genera sponges, whereas Rhizoporamangrove was inhabited only by one genus 


Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.


2020 ◽  
Vol 29 (4) ◽  
pp. 685-690
Author(s):  
C. S. Vanaja ◽  
Miriam Soni Abigail

Purpose Misophonia is a sound tolerance disorder condition in certain sounds that trigger intense emotional or physiological responses. While some persons may experience misophonia, a few patients suffer from misophonia. However, there is a dearth of literature on audiological assessment and management of persons with misophonia. The purpose of this report is to discuss the assessment of misophonia and highlight the management option that helped a patient with misophonia. Method A case study of a 26-year-old woman with the complaint of decreased tolerance to specific sounds affecting quality of life is reported. Audiological assessment differentiated misophonia from hyperacusis. Management included retraining counseling as well as desensitization and habituation therapy based on the principles described by P. J. Jastreboff and Jastreboff (2014). A misophonia questionnaire was administered at regular intervals to monitor the effectiveness of therapy. Results A detailed case history and audiological evaluations including pure-tone audiogram and Johnson Hyperacusis Index revealed the presence of misophonia. The patient benefitted from intervention, and the scores of the misophonia questionnaire indicated a decrease in the severity of the problem. Conclusions It is important to differentially diagnose misophonia and hyperacusis in persons with sound tolerance disorders. Retraining counseling as well as desensitization and habituation therapy can help patients who suffer from misophonia.


2002 ◽  
Author(s):  
Rebecca L. Stump ◽  
Judith C. Conger ◽  
Scott Vrana

1992 ◽  
Author(s):  
Helen M. Murphy ◽  
Cyrilla H. Wideman

Sign in / Sign up

Export Citation Format

Share Document