About: Filefish is a research topic. Over the lifetime, 129 publications have been published within this topic receiving 1149 citations. The topic is also known as: Monacanthidae.
TL;DR: Structural plant features are the most important factors driving discrimination between seagrass species by omnivorous fish, whereas strict herbi- vores make feeding decisions that are highly influenced by nutritional characteristics, presumably as recognized by both olfaction and gustation.
Abstract: Consumers of seagrasses are increasingly recognized for their ability to shape land- scape features and regulate energy flux in coastal ecosystems. To date, however, the nutritional char- acteristics and morphological features by which herbivores and omnivores make feeding decisions are poorly understood. To elucidate how consumers of marine vascular plants discriminate among different food resources, we conducted food-preference assays with seagrass leaves and seagrass- incorporated agar diets of the 3 most common seagrass species of the Gulf of Mexico (Thalassia tes- tudinum, Halodule wrightii and Syringodium filiforme). These 3 species were offered simultaneously to the most abundant local consumers: the omnivorous pinfish Lagodon rhomboides and filefish Stephanolepis hispidus, the herbivorous emerald parrotfish Nicholstina usta, and the herbivorous sea urchin Lytechinus variegatus. Consumption rates (g fresh weight (FW)) of leaves or seagrass-incorpo- rated agar diets were estimated over 24 h periods. Measured plant properties included C:N, N:P, total carbohydrates, protein and lipid concentrations, caloric content, percentage of organic matter, water and ash. Results showed that S. filiforme was preferred by all fish species (81, 60.2 and 59% of total leaf consumption of pinfish, filefish and parrotfish, respectively), whereas sea urchins consumed the highest amounts of H. wrightii (71.2% of total). However, when leaf structure was removed, by incor- porating ground leaf tissue into agar matrices, pinfish and filefish did not show any significant dietary preference. In contrast, parrotfish and sea urchins maintained their preferences for S. filiforme and H. wrightii, respectively. Parrotfish preference for S. filiforme coincided with highest lipid and carbo- hydrate contents, whereas the preference of sea urchins for H. wrightii could be explained by higher levels of the percentage of organic matter and caloric content. Our results suggest that structural plant features (e.g. leaf manipulability and/or visual recognition of resources) are the most important factors driving discrimination between seagrass species by omnivorous fish, whereas strict herbi- vores make feeding decisions that are highly influenced by nutritional characteristics, presumably as recognized by both olfaction and gustation.
TL;DR: In this paper, the distribution of the gel degradation property in muscle cells among fish species was investigated and two possible reasons for the discrepancy were identified: methods to separate the sarcoplasmic and myofibrillar fractions, and the distributions of gel-degradation inducing factors in muscle cell.
Abstract: There exists some discrepancy about the distribution of the gel degradation property in muscle cells among fish species. Two possible cause are assumed; methods to separate the sarcoplasmic and myofibrillar fractions, and the distribution of gel-degradation-inducing-factor in muscle cells is intrinsically different among fish species. The goal of the study was to clarify this discrepancy
TL;DR: Muscular PC was dominant in surf smelt, filefish, lizard fish, white croaker, counting for 75–82% of muscular phospholipid, Pacific salmon, Pacific pomfret, pollack and plaice had 24–32% phosphatidylethanolamine which was considerably higher than the other sample fishes.
Abstract: The lipid content and composition of phosphatidylcholine (PC) and fatty acids were determined in tissues (muscle, liver, heart and gonads) of 27 species of teleosts. We also measured PC and fatty acids in muscle of 6 species of squid. Contents of phospholipid and PC in the muscle tissue ranged between 0.54 and 0.94%, 0.30 and 0.72%, respectively. Muscular PC was dominant in surf smelt, filefish, lizard fish, white croaker, counting for 75–82% of muscular phospholipid, Pacific salmon, Pacific pomfret, pollack and plaice had 24–32% phosphatidylethanolamine which was considerably higher than the other sample fishes. Species specificity of n −6 and n −3 polyunsaturated fatty acid (PUFA) distribution in the muscular PC was noted: coastal and reef dwelling fish species contained higher proportions of n −6 PUFA, while a higher content of n −3 PUFA was characteristic for the migratory teleosts.
TL;DR: A serine collagenolytic protease was purified from the internal organs of filefish, Novoden modestrus, by ammonium sulfate, ion-exchange chromatography on a DEAE-Sephadex A-50, and gel filtration on a SephadeX G- 150 column.
Abstract: Received 31 August 2001, Accepted 1 November 2001A serine collagenolytic protease was purified from theinternal organs of filefish, Novoden modestrus, byammonium sulfate, ion-exchange chromatography on aDEAE-Sephadex A-50, ion-exchange rechromatography ona DEAE-Sephadex A-50, and gel filtration on a Sephadex G-150 column. The molecular mass of the filefish serinecollagenase was estimated to be 27.0 kDa by gel filtrationand SDS-PAGE. The purified collagenase was optimallyactive at pH 7.0-8.0 and 55