Contributors: Dundee, Harold A.
Contributors: Dundee, Harold A.
Contributors: Graves, Gary R.
... NH-Vertebrate Zoology
Revisions of Anatomical Descriptions of the Pharyngeal Jaw Apparatus in Moray Eels of the Family Muraenidae (Teleostei: Anguilliformes)
Contributors: Johnson, G. David
... Fishes of the family Muraenidae (moray eels) comprise two subfamilies of highly specialized benthic forms. As first documented and described in two earlier papers, morays have a highly specialized raptorial feeding apparatus in which they move their upper pharyngeal jaws forward into the oral cavity to grasp prey and transport it back into the esophagus. Here I revisit the descriptive aspects of the second paper and compare them to my own investigations of the topographic anatomy of this apparatus. Regrettably, my observations of the relevant anatomical details and terminology differ markedly from those presented in that paper. Accordingly, I describe and illustrate my observations, compare them to previous descriptions, and discuss possible functional implications. In contrast to the earlier paper, I offer detailed argumentation and justification for my terminology and identification of relevant gill-arch muscles in muraenids. Based on my re-interpretation of the topographic anatomy of the pharyngeal musculature, three conspicuously different anatomical mechanisms of pharyngeal jaw protrusion and retraction are identified.
... Annual Report 2018
Contributors: Gibbons, J. Whitfield
Flora and Vegetation of Clipperton (La Passion) Atoll, North-Eastern Pacific Ocean: Three centuries of changes and recent plant dynamics
Contributors: Payri, Claude E., N'Yeurt, Antoine D. R., Mattio, Lydiane
Contributors: Poupin, Joseph, Cleva, Regis, Bouchard, Jean-Marie, Dinhut, Vincent, Dumas, Jacques
Contributors: Selfridge, J., Bachran, K., McElveen, D., Robbins, Robert K., Ransom, T.
... ABSTRACT. The frosted elfin (Callophrys irus Godart) is a globally rare butterfly that inhabits disturbance-dependent habitats often managed by prescribed fire. Natural history observations and published data are equivocal on whether frosted elfin caterpillars pupate below or above the soil surface, and some evidence suggests that pupation sites differ for caterpillars that feed on lupine (Lupinus spp.) versus wild indigo (Baptisia spp.). Pupation site has important implications for management because pupae located beneath the soil surface will likely be afforded greater protection from fire than those above the soil surface. Our study of both lupine- and indigo-feeding larvae at a single site in Worcester County, Maryland, found that pupation occurs above the soil surface in the leaf litter 92% of the time, and does not differ significantly with food plant preference. We recommend that land managers using prescribed fire as a habitat management tool for frosted elfin habitat assume some level of pupal mortality in burned areas and utilize a rotational burn schedule that maintains areas of unburned refugia in high-density elfin areas. We also recommend that managers try to establish a metapopulation structure for frosted elfin to address the possibility of natural occurring fires.