Influence of web-monitoring tactics on the density of mitochondria in leg muscles of the spider family uloboridae

✍ Scribed by Brent D. Opell; David C. Konur

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 652 KB
• Volume: 213
• Category: Article
• ISSN: 0362-2525
• DOI: 10.1002/jmor.1052130307

✦ Synopsis

Abstract

From electron micrographs we determined the ratio of mitochondrial to myofibril cross sectional area in cells of the first leg anterior depressor muscles of adult females of four spider species, each from a different genus. Species with more active web‐monitoring tactics and greater tracheal supplies to their first legs have muscle cells that are better supplied with mitochondria than those with less active tactics and less well‐developed tracheal systems. These results demonstrate that, even in homologous tissues of closely related species, mitochondrial supply can change to accommodate changes in metabolic activity. © 1992 Wiley‐Liss, Inc.