scholarly journals The role of coral colony health state in the recovery of lesions

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1531 ◽  
Author(s):  
Claudia P. Ruiz-Diaz ◽  
Carlos Toledo-Hernandez ◽  
Alex E. Mercado-Molina ◽  
María-Eglée Pérez ◽  
Alberto M. Sabat
Keyword(s):  
Tissue Regeneration ◽  
Coral Disease ◽  
Health State ◽  
Gorgonia Ventalina ◽  
Coral Colony ◽  
Vital Functions ◽  
Regenerate Tissue ◽  
Sea Fan ◽  
The Impact

Coral disease literature has focused, for the most part, on the etiology of the more than 35 coral afflictions currently described. Much less understood are the factors that underpin the capacity of corals to regenerate lesions, including the role of colony health. This lack of knowledge with respect to the factors that influence tissue regeneration significantly limits our understanding of the impact of diseases at the colony, population, and community level. In this study, we experimentally compared tissue regeneration capacity of diseased versus healthy fragments ofGorgonia ventalinacolonies at 5 m and 12 m of depth. We found that the initial health state of colonies (i.e., diseased or healthy) had a significant effect on tissue regeneration (healing). All healthy fragments exhibited full recovery regardless of depth treatment, while diseased fragments did not. Our results suggest that being diseased or healthy has a significant effect on the capacity of a sea fan colony to repair tissue, but that environmental factors associated with changes in depth, such as temperature and light, do not. We conclude that disease doesn’t just compromise vital functions such as growth and reproduction in corals but also compromises their capacity to regenerate tissue and heal lesions.

The role of sclerites in the defense against pathogens of the sea fan Gorgonia ventalina (Octocorallia)

2016 ◽  
Vol 483 ◽  
pp. 20-24 ◽  
Author(s):  
Carlos Toledo-Hernández ◽  
Claudia Patricia Ruiz-Diaz ◽  
Luis Ramírez-Camejo ◽  
Raiza Paniagua ◽  
Alberto M. Sabat ◽  
...  
Keyword(s):  
Gorgonia Ventalina ◽  
Sea Fan

scholarly journals Low regeneration of lesions produced by coring inOrbicella faveolata

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1596 ◽  
Author(s):  
Rosa E. Rodríguez-Martínez ◽  
Adán Guillermo Jordán-Garza ◽  
Eric Jordán-Dahlgren
Keyword(s):  
Tissue Regeneration ◽  
Coral Species ◽  
Tissue Loss ◽  
Long Term Effects ◽  
Common Procedure ◽  
Live Tissue ◽  
Coral Colony ◽  
Orbicella Faveolata ◽  
Regenerate Tissue

The extraction of tissue-skeleton cores from coral colonies is a common procedure to study diverse aspects of their biology, water quality or to obtain environmental proxies. Coral species preferred for such studies in Caribbean reefs belong to the generaOrbicella. The long term effects of coring in the coral colony are seldom evaluated and in many Caribbean countries this practice is not regulated. We monitored 50 lesions produced onOrbicella faveolatacolonies by the extraction of two centimeter-diameter cores to determine if they were able to heal after a four year period. At the end of the study 4% of the lesions underwent full regeneration, 52% underwent partial regeneration, 14% suffered additional tissue loss but remained surrounded by live tissue, and 30% merged with dead areas of the colonies. Given the low capacity ofOrbicella faveolatato regenerate tissue-skeleton lesions, studies that use coring should be regulated and mitigation actions, such as using less destructive techniques and remediation measures after extraction, should be conducted to facilitate tissue regeneration.

Exploring the role of chitinolytic enzymes in the sea fan coral, Gorgonia ventalina

2006 ◽  
Vol 150 (6) ◽  
pp. 1137-1144 ◽  
Author(s):  
Nancy L. Douglas ◽  
Kerri M. Mullen ◽  
Stephanie C. Talmage ◽  
C. Drew Harvell
Keyword(s):  
Gorgonia Ventalina ◽  
Chitinolytic Enzymes ◽  
Sea Fan

The Need to Belong and the Relationship Between Loneliness and Health

2014 ◽  
Vol 22 (4) ◽  
pp. 194-201 ◽  
Author(s):  
Freda-Marie Hartung ◽  
Britta Renner
Keyword(s):  
Individual Differences ◽  
Social Isolation ◽  
Social Situation ◽  
First Year ◽  
Health State ◽  
Need To Belong ◽  
First Year University ◽  
Perceived Social Isolation ◽  
The Impact ◽  
The Relationship

Humans are social animals; consequently, a lack of social ties affects individuals’ health negatively. However, the desire to belong differs between individuals, raising the question of whether individual differences in the need to belong moderate the impact of perceived social isolation on health. In the present study, 77 first-year university students rated their loneliness and health every 6 weeks for 18 weeks. Individual differences in the need to belong were found to moderate the relationship between loneliness and current health state. Specifically, lonely students with a high need to belong reported more days of illness than those with a low need to belong. In contrast, the strength of the need to belong had no effect on students who did not feel lonely. Thus, people who have a strong need to belong appear to suffer from loneliness and become ill more often, whereas people with a weak need to belong appear to stand loneliness better and are comparatively healthy. The study implies that social isolation does not impact all individuals identically; instead, the fit between the social situation and an individual’s need appears to be crucial for an individual’s functioning.

Intergroup Threat and Outgroup Attitudes

2013 ◽  
Vol 44 (5) ◽  
pp. 311-319 ◽  
Author(s):  
Marco Brambilla ◽  
David A. Butz
Keyword(s):  
Gay Men ◽  
Social Group ◽  
Welfare Recipients ◽  
Intergroup Attitudes ◽  
Social Policies ◽  
Intergroup Threat ◽  
Economic Threat ◽  
The Impact ◽  
General Climate

Two studies examined the impact of macrolevel symbolic threat on intergroup attitudes. In Study 1 (N = 71), participants exposed to a macrosymbolic threat (vs. nonsymbolic threat and neutral topic) reported less support toward social policies concerning gay men, an outgroup whose stereotypes implies a threat to values, but not toward welfare recipients, a social group whose stereotypes do not imply a threat to values. Study 2 (N = 78) showed that, whereas macrolevel symbolic threat led to less favorable attitudes toward gay men, macroeconomic threat led to less favorable attitudes toward Asians, an outgroup whose stereotypes imply an economic threat. These findings are discussed in terms of their implications for understanding the role of a general climate of threat in shaping intergroup attitudes.

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