Life Sciences Commons^™

The Role Of Crassostrea Virginica Hemocytes In Shell Formation: Ex Vivo Mineral Deposition By Cultured Hemocytes, Emily A. Untener, Douglas C. Hansen, Karolyn Hansen

Karolyn Hansen

Abstract of Technical Paper Presented at the 103rd Annual Meeting National Shellfisheries Association Baltimore, Maryland March 27–31, 2011

The Mineralization Front Of The Eastern Oyster Is Cellular, Andrew S. Mount, Neeraj V. Gohad, Mary Beth Johnstone, Karolyn Hansen, Douglas C. Hansen

Karolyn Hansen

Abstract of Technical Paper Presented at the 101st Annual Meeting National Shellfisheries Association Savannah, Georgia March 22–26, 2009

Towards Biomimetic Ceramic Coatings: Cellular Aspects Of Oyster Shell Biomineralization, Mary Beth Johnstone, Karolyn Hansen, Neeraj V. Gohad, Douglas C. Hansen, Andrew S. Mount

Karolyn Hansen

Abstract of Technical Paper Presented at the 101st Annual Meeting National Shellfisheries Association Savannah, Georgia March 22–26, 2009

Development Of Appropriate Packaging For Shelf Life Extension Of Smoked Fish In A Developing Economy, Michael Ayodele Omodara

Michael Ayodele Omodara

Three composite packaging materials; Paper-Polyethylene (PaPe,), Polyethylene-Paper (PePa) Polyethylene-Paper Polyethylene (PePaPe) were developed for packaging of dried fish samples with Polyethylene used as control. Some engineering properties (thickness, water and oil absorption rates) were determined using standard methods. Smoked dried catfish were stored in the three composite packing materials and in polyethylene for six months. The composite materials’thicknesses ranged from 0.23 to 0.31 mm while that of control was 0.27 mm. The water and oil absorption rates ranged from 1.73 to 10.00 g/cm2/min and 2.50 to 10.86 g/cm2/min respectively for the composite materials and 0.36 and 0.28 g/cm2/min respectively for …

A Tide Prediction And Tide Height Control System For Laboratory Mesocosms, Luke P. Miller, Jeremy D. Long

Luke P. Miller

Experimental mesocosm studies of rocky shore and estuarine intertidal systems may benefit from the application of natural tide cycles to better replicate variation in immersion time, water depth, and attendant fluctuations in abiotic and edaphic conditions. Here we describe a stand-alone microcontroller tide prediction open-source software program, coupled with a mechanical tidal elevation control system, which allows continuous adjustment of aquarium water depths in synchrony with local tide cycles. We used this system to monitor the growth of Spartina foliosa marsh cordgrass and scale insect herbivores at three simulated shore elevations in laboratory mesocosms. Plant growth decreased with increasing shore …

Interactions Between Short-Beaked Common Dolphin (Delphinus Delphis) And The Winter Pelagic Pair-Trawl Fishery Ff Southwest England (Uk), Marijke N. De Boer, James T. Saulino, Mardik F. Leopold, Peter J.H. Reijnders, Mark P. Simmonds

Mark P. Simmonds, OBE

During offshore and onshore studies (2004 to 2009), the interactions between pair-trawls and short-beaked common dolphins (Delphinus delphis) were studied to better understand the impact of bycatch. A ‘hotspot’ area where pair-trawls overlapped with high dolphin abundance was identified. We made comparisons between boat-based data collected in absence and presence of pair-trawlers. The relative abundance and group-size of dolphins was significantly higher in the presence of pair-trawlers. Dolphins were observed associating with towing and hauling procedures. Significantly, more carcasses occurred in areas with hauling-activity than those without. Body-temperatures obtained from carcasses found near operating pair-trawlers indicated that bycatch mostly occurred …

Web 2.0 Y Medios Sociales Para El Desarrollo En Pesca Y Acuicultura. En Ruta Hacia Las Redes Sociales, ¿Cuál Puede Ser Un Itinerario De Puesta En Marcha?, Enrique Wulff

Enrique Wulff

El modelo usado por la antigua red, en base a carpetas compartidas y repositorios, para desarrollar nuevos contenidos y transmitirlos se agota. En éste libro se propone recordar que si nadie visita tu página, que si uno se limita a hablar de si mismo sin formular preguntas, que si por el contrario facilita respuestas y las promociona construyendo algo excitante, si establece objetivos trimestrales, y si siempre tiene un horizonte a largo término. Entonces accede a las nuevas y fáciles de usar herramientas que se conocen como Web 2.0, las cuales conectan gente dando lugar a redes sociales, colaborando y …

The Shellfish Corner -- Shellfish And The Problem Of Ocean Acidification, Michael A. Rice

Michael A Rice

The acidification of the world's oceans due to increasing atmospheric carbon dioxide concentrations is creating a problem in the dissolution of larval shells of mollusks and creating problems for shellfish hatcheries. Hatcheries can mitigate the problem by treating incoming seawater with alkaline sodium carbonate, but there is evidence that acidic sediments in some locations are a source of considerable post-settlement loss of newly set juveniles.

Microalgae In Eastern Pacific White Shrimp Hatcheries: A Review On Roles And Culture Environments, Wa Iba, Michael A. Rice, Gary H. Wikfors

Michael A Rice

Demand for shrimp, particularly the eastern Pacific white shrimp Litopenaeus vannamei (Boone 1931), will continue to increase in Asian and worldwide seafood markets. Providing shrimp farms with a robust, healthy, and continuous supply of shrimp seed is a challenge that must be addressed to meet the demand. Shrimp feed during hatchery production still relies on live microalgae, despite many years of effort to find suitable full or partial-replacement diet alternatives. Successful mass production of microalgae for hatchery feed to obtain good quality shrimp seedstock depends on a number of environmental factors that determine the growth and nutritional values of various …

Management Regimes And Its Impact On The Wetland Fisheries Management In Assam, Ganesh Chandra

Ganesh Chandra

Assam is endowed with copious aquatic wealth in the form of beels, swamps, ponds and rivers. The floodplain wetlands (beels) extending over one lakh hectare, constitute the most important fishery resource of the state. The beels are considered as one of the most productive ecosystems owing to their characteristic interactions between land and water system. These wetlands are the common property resource and under different management regimes. These wetlands are under various management regimes, i.e., private management (individuals and groups), fishermen cooperative management, Community-based fisheries management (decentralized management, Government works as facilitator) and open access. Most of the unregistered beels …

Extension Programming In Support Of Public Policy For The Management Of Aquaculture In Common Water Bodies, Michael A. Rice

Michael A Rice

Study Targets Striped Bass, Catherine V. Schmitt

Catherine Schmitt

This article in the Bangor Daily News profiles the Sea Grant-funded research of Dr. Joe Zydlewski, who is studying the striped bass population in the Penobscot River. A must read for all striper fans.

Seaweed Beyond Sushi, Catherine V. Schmitt

Catherine Schmitt

No abstract provided.

Alewives: Feast Of The Season, Catherine V. Schmitt

Catherine Schmitt

Alewives are sea-run, or diadromous, fish that spend most of their lives in the Atlantic Ocean but return as adults to coastal rivers in spring to spawn in freshwater streams and ponds. This article in Maine Boats, Homes, & Harbors magazine discusses the natural and cultural history of Maine's native runs of alewives and other sea-run fish.

Diver-Harvested Scallops: Precious As Pearls, Catherine V. Schmitt

Catherine Schmitt

No abstract provided.

Northern Shrimp: A Gala Addition To A Winter's Night, Catherine V. Schmitt

Catherine Schmitt

The arrival of the holidays heralds the start of shrimp season in northern New England. This delicacy is cause for celebration both locally and around the world, where many people look forward to fresh Maine shrimp for holiday meals.

The Salters Of Stanley Brook, Catherine V. Schmitt

Catherine Schmitt

No abstract provided.

Editor's Note, Catherine Schmitt

Catherine Schmitt

No abstract provided.

Maine Oyster Cult, Catherine V. Schmitt

Catherine Schmitt

Read about the natural history of Maine's oyster populations, and how the University of Maine and independent aquaculturists have brought these native shellfish back to coastal waters--and tables--in Maine. This story appeared in the March 2008 issue of Maine Boats, Homes, & Harbors magazine.

The Monkfish: So Much More Than A Pretty Face, Catherine V. Schmitt

Catherine Schmitt

No abstract provided.

Frequency-Dependent Mate Selection In The Guppy (Poeciliidae: Poecilia Reticulata), Andre Porter, Jack Frankel

Jack Frankel

The Centennial Of The Smith-Lever Act And Aquaculture Extension, Michael A. Rice

Michael A Rice

Status Of The Habitat Evaluation Procedures, Mel Schamberger, William B. Krohn

William B. Krohn

The 1970s was a decade of increased awareness of environmental problems, and emphasis was placed on the development of procedures for predicting impacts of proposed developmental activities on natural systems. Impact assessment has evolved from a focus on species numbers, human use, species richness, and related methods to include the investigation of habitat as a supplemental or alternative approach to environmental planning, mitigation, species management, and impact assessment (Schamberger 1979, U.S. Fish and Wildlife Service 1980a, 1980b). The impetus for habitat-based assessment techniques came primarily from two sources: (1) environmental legislation requiring noneconomic project evaluations; and (2) an awareness within …

Infectious Necrotizing Enteritis And Mortality Caused By Vibrio Carachariae In Summer Flounder Paralichthys Dentatus During Intensive Culture, Bruno Soffientino, Todd Gwaltney, David R. Nelson, Jennifer L. Specker, Michael Mauel, Marta Gomez-Chiarri

David R. Nelson

An epizootic causing mortality among cultured summer flounder Paralichthys dentatus occurred in summer of 1998 at a land-based facility on Narragansett Bay, Rhode Island, USA. The disease, flounder infectious necrotizing enteritis (FINE), was characterized by reddening around the anal area, distended abdomens filled with opaque serosanguineous fluid, enteritis and necrosis of the posterior intestine. In extreme cases of the disease, the posterior intestine was detached from the anus and was observed coming out the vent. The intestine of individuals that recovered from the dsease ended in a blind-sac; the abdomens of these fish were distended, due to food and water …

Spatial And Temporal Variation In Otolith Chemistry For Tautog (Tautoga Onitis) In Narragansett Bay And Rhode Island Coastal Ponds, Ivan Mateo, Edward G. Durbin, David A. Bengtson, Richard Kingsley, Peter K. Swart, Daisy Durant

David A. Bengtson

The elemental composition of otoliths may provide valuable information for establishing connectivity between fish nursery grounds and adult fish populations. Concentrations of Rb, Mg, Ca, Mn, Sr, Na, K, Sr, Pb, and Ba were determined by using solution-based inductively coupled plasma mass spectrometry in otoliths of young-of-the year tautog (Tautoga onitis) captured in nursery areas along the Rhode Island coast during two consecutive years. Stable oxygen (δ18O) and carbon (δ13C) isotopic ratios in young-of-the year otoliths were also analyzed with isotope ratio mass spectrometry. Chemical sig natures dif fered sig nif icantly among the distinct nurseries within Narragansett Bay and …

Bacterial Community Profiling Of The Eastern Oyster (Crassostrea Virginica): Comparison Of Culture-Dependent And Culture-Independent Outcomes, Kenneth J. La Valley, Steve Jones, Marta Gomez-Chiarri, Joseph Dealteris, Michael A. Rice

Michael A Rice

Tissue-associated bacterial community profiles generated using a nested polymerase chain reaction–denaturing gradient gel electrophoresis (DGGE) approach and culture-dependent and culture-independent isolation techniques were compared. Oyster samples were collected from 2 harvest areas along the coast of Maine, in the United States. Profiles from both isolation strategies were evaluated using Sorensen’s index of similarity and cluster analysis of gel banding patterns. Cultureindependent profiles were further evaluated using the Shannon diversity index. In general, the culture-dependent strategy resulted in a greater number of bands within a profile. BacterialDGGEprofiles were found to be highly similar within an isolation strategy, with a higher degree …

Climate Change Adaptation Chapter: Marshfield, Massachusetts, Joshua H. Chase, Jonathan G. Cooper, Rory Elizabeth Fitzgerald, Filipe Antunes Lima, Sally R. Miller, Toni Marie Pignatelli

Sally Miller

Climate change, understood as a statistically significant variation in the mean state of the climate or its variability, is the greatest environmental challenge of this generation (Intergovernmental Panel on Climate Change, 2001). Marshfield is already being affected by changes in the climate that will have a profound effect on the town’s economy, public health, coastal resources, natural features, water systems, and public and private infrastructure. Adaptation strategies have been widely recognized as playing an important role in improving a community’s ability to respond to climate stressors by resisting damage and recovering quickly. Based on review of climate projections for the …

State Of Inland Fisheries And Inland Fisher Community Of India, A P. Sharma, P K. Katiha, A K. Sahoo, Ganesh Chandra

Ganesh Chandra

With exponential increase in human population. the food demand, shrinkage of cultivable land and decline in the agricultural productivity. role of livestock and fisheries sectors to fulfill growing demand for food is of paramount importance for nutritional security. In this context significance of fisheries sector is enormous and well documented. Starting from a purely traditional activity in the early fifties. the fisheries sector has transformed into a significant commercial enterprise with impressive growth (overI 0 fold increase in last six decades). The sector is employer of more than 14 million people. The environmental and social perspectives of inland open water …

How The Presidents Ate Their Salmon, Catherine Schmitt

Catherine Schmitt

No abstract provided.

Modified Taylor Float System For Culturing Oysters In The Gambia, Michael A. Rice

Michael A Rice

This monograph is a report of trials to grow oysters, Crassostrea tulipa, in Taylor Float plastic mesh culture bags in oyster harvesting sites in Gambia, West Africa. Oysters grew well in the gear, but adoption of the gear by local oyster farmers would be difficult due to the relatively high cost of the gear in relation to the value of oysters cultured within. Economic analysis suggested an eight-year investment payback to recover costs of the gear.