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Articles 1 - 6 of 6
Full-Text Articles in Entire DC Network
From Spinning Silk To Spreading Saliva: Mouthpart Remodeling In Manduca Sexta (Lepidoptera: Sphingidae), Istvan Miko, Sarthok Rasique Rahman, Anne C. Jones, Mark A. Townley, Brandon Gominho, Sulav Paudel, S David Stupski, Heather M. Hines, Rudolf J. Schilder
From Spinning Silk To Spreading Saliva: Mouthpart Remodeling In Manduca Sexta (Lepidoptera: Sphingidae), Istvan Miko, Sarthok Rasique Rahman, Anne C. Jones, Mark A. Townley, Brandon Gominho, Sulav Paudel, S David Stupski, Heather M. Hines, Rudolf J. Schilder
Biological Sciences
As a model organism, the tobacco hornworm Manduca sexta (Linnaeus 1763) has contributed much to our knowledge of developmental processes in insects, and major developmental changes between different larval instars are generally well understood. Second and later instars of M. sexta do not produce silk, and their spinneret and accessory labial glands (=Lyonet’s glands), structures thought to be key players in silk production in other lepidopterans, are highly reduced. To our knowledge, mouthparts and labial gland morphology of the silk-producing first instar have never been described. In this study, we compared the mouthpart morphology and transcriptome profile of first and …
Losses Of Mineral Soil Carbon Largely Offset Biomass Accumulation Fifteen Years After Whole-Tree Harvest In A Northern Hardwood Forest, Matthew A. Vadeboncoeur, Steven P. Hamburg, Chris E. Johnson, Jonathan Sanderman
Losses Of Mineral Soil Carbon Largely Offset Biomass Accumulation Fifteen Years After Whole-Tree Harvest In A Northern Hardwood Forest, Matthew A. Vadeboncoeur, Steven P. Hamburg, Chris E. Johnson, Jonathan Sanderman
Earth Systems Research Center
Changes in soil carbon stocks following forest harvest can be an important component of ecosystem and landscape-scale C budgets in systems managed for bioenergy or carbon-trading markets. However, these changes are characterized less often and with less certainty than easier-to-measure aboveground stocks. We sampled soils prior to the whole-tree harvest of Watershed 5 at the Hubbard Brook Experimental Forest in 1983, and again in years 3, 8, and 15 following harvest. The repeated measures of total soil C in this stand show no net change in the O horizon over 15 years, though mixing with the mineral soil reduced observed …
Macroalgal Monitoring In The Great Bay Estuary: 2018 Annual Report, David M. Burdick, Gregg E. Moore, Arthur C. Mathieson, Andrew Payne, Chris Peter
Macroalgal Monitoring In The Great Bay Estuary: 2018 Annual Report, David M. Burdick, Gregg E. Moore, Arthur C. Mathieson, Andrew Payne, Chris Peter
PREP Reports & Publications
Since 2013, the abundance and taxa of intertidal macroalgae have been assessed at fixed locations throughout the Great Bay Estuary in New Hampshire. Algal abundance may be influenced by environmental conditions such as nutrient levels, water temperature, light and invasive species. Therefore, abundance of different algal groups can provide insights into the overall health of the estuary and signal ecological change. In 2018, intertidal abundance data for percentage cover and biomass were collected, as planned, from five of the eight sites. For the first time, subtidal sampling arrays were also incorporated at all four sites in Great Bay proper to …
Piscataqua Region Estuaries Partnership 2018 Annual Report, Piscataqua Region Estuaries Partnership
Piscataqua Region Estuaries Partnership 2018 Annual Report, Piscataqua Region Estuaries Partnership
PREP Reports & Publications
No abstract provided.
A Review Of Equine Laminitis: Risk Factors And Predispositions, Molly C. Henion
A Review Of Equine Laminitis: Risk Factors And Predispositions, Molly C. Henion
Honors Theses and Capstones
Equine laminitis is a disease of the hoof characterized by inflammation or disruption of the sensitive and insensitive laminae located within the hoof. These structures are responsible for maintaining a secure connection between the third phalanx (P3) and the hoof wall. Damage to these laminae can weaken the attachment between the hoof wall and P3, causing separation and eventual rotation of P3. Equine laminitis can result from multiple triggers, but the most commonly seen cases of the disease are those which are related to endocrinopathy and metabolic related issues. This review will focus on determining the metabolic risk factors associated …
A Developmental Study Of Apoptotic Markers And Histamine In Cephalopod Statocysts, Samantha Nicole Leef
A Developmental Study Of Apoptotic Markers And Histamine In Cephalopod Statocysts, Samantha Nicole Leef
Honors Theses and Capstones
Cephalopods can participate in complex navigation using landmarks that show context due to their statocysts. Statocysts are analogous to the vertebrate vestibular and auditory system encased in cartilage rather than bone making them more easily accessible. Age and anatomical dysfunctions are the reasons for many human vestibular malfunctions. Two of these sources are endolymph hydrops and aging. In the past, endolymph pressure changes were attributed to the ineffectual ion transport. Recent studies have illuminated the possibility of histamine receptors in the semicircular canal could be responsible for patients’ endolymph pressure changes rather than the previous belief that the pressure changes …