DRAMATIC PHENOTYPIC PLASTICITY IN BARNACLE LEGS (BALANUS GLANDULA DARWIN): MAGNITUDE, AGE DEPENDENCE, AND SPEED OF RESPONSE

Evolution ◽  
2003 ◽  
Vol 57 (6) ◽  
pp. 1281 ◽  
Author(s):  
Kerry B. Marchinko
Keyword(s):  
Phenotypic Plasticity ◽  
Balanus Glandula ◽  
Age Dependence ◽  
Speed Of Response

Effects of crowding on fecundity in barnacles: Semibalanus (Balanus) balanoides, Balanus glandula, and Chthamalus dalli

1984 ◽  
Vol 62 (9) ◽  
pp. 1788-1795 ◽  
Author(s):  
David S. Wethey
Keyword(s):  
Phenotypic Plasticity ◽  
Somatic Tissue ◽  
Washington State ◽  
Experimental Population ◽  
Balanus Glandula ◽  
Opposite Pattern ◽  
Shell Eggs ◽  
Tissue Weight ◽  
Balanus Balanoides ◽  
Chthamalus Dalli

Phenotypic plasticity of relative investment in shell, eggs, and somatic tissue was examined with experimental population density manipulations in field populations of the intertidal barnacles Semibalanus (Balanus) balanoides from Massachusetts and Balanus glandula and Chthamalus dalli from Washington State, U.S.A. Individuals of S. balanoides of comparable somatic tissue weights produced larger clutches of eggs when crowded and columnar than when conical and uncrowded. Individuals of C. dalli showed a similar pattern. Individuals of B. glandula showed the opposite pattern: at comparable somatic tissue weights, conical uncrowded individuals made slightly larger clutches of eggs than did crowded, columnar individuals. In all cases the greatest shell investment per unit somatic tissue weight was associated with the greatest clutch investment per unit somatic tissue weight.

Ecology and biogeography in the introduction to “De bestiis marinis” by Georg Wilhelm Steller

2019 ◽  
Vol 46 (1) ◽  
pp. 63-74
Author(s):  
Stefano Mattioli
Keyword(s):  
Body Size ◽  
Phenotypic Plasticity ◽  
Geographical Distribution ◽  
Functional Traits ◽  
Marine Mammals ◽  
Main Part ◽  
Wide Distribution ◽  
Restricted Range ◽  
Direct Influence ◽  
Modern Biology

The rediscovery of the original, unedited Latin manuscript of Georg Wilhelm Steller's “De bestiis marinis” (“On marine mammals”), first published in 1751, calls for a new translation into English. The main part of the treatise contains detailed descriptions of four marine mammals, but the introduction is devoted to more general issues, including innovative speculation on morphology, ecology and biogeography, anticipating arguments and concepts of modern biology. Steller noted early that climate and food have a direct influence on body size, pelage and functional traits of mammals, potentially affecting reversible changes (phenotypic plasticity). Feeding and other behavioural habits have an impact on the geographical distribution of mammals. Species with a broad diet tend to have a wide distribution, whereas animals with a narrow diet more likely have only a restricted range. According to Steller, both sea and land then still concealed countless animals unknown to science.

Age-Dependence in Alterations in Nitric Oxide Synthesis in Cardiovascular System during Adaptation to Physical Training

2010 ◽  
Vol 1 (4) ◽  
pp. 345-356 ◽  
Author(s):  
O. V. Bazilyuk ◽  
Anatolii V. Kotsuruba ◽  
Lyubov. G. Stepanenko ◽  
Sergey A. Talanov ◽  
Yu. P. Korchak ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Cardiovascular System ◽  
Physical Training ◽  
Nitric Oxide Synthesis ◽  
Age Dependence
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