Animal Sciences Commons^™

Application Of Pop-Up Satellite Archival Tag Technology To Estimate Postrelease Survival Of White Marlin (Tetrapturus Albidus) Caught On Circle And Straight-Shank ("J") Hooks In The Western North Atlantic Recreational Fishery, Az Horodysky, John Graves

VIMS Articles

Short-duration (5- or 10-day) deployments of pop-up satellite archival tags were used to estimate survival of white marlin (Tetrapturus albidus) released from the western North Atlantic recreational fishery. Forty-one tags, each recording temperature, pressure, and light level readings approximately every two minutes for 5-day tags (n=5) or four minutes for 10-day tags (n=36), were attached to white marlin caught with dead baits rigged on straight-shank ("J") hooks (n=21) or circle hooks (n = 20) in offshore waters of the U.S. Mid-Atlantic region, the Dominican Republic, Mexico, and Venezuela. Forty tags (97.8%) transmitted data to the satellites of the Argos system, …

Observations On The Life History Of The Barndoor Skate, Dipturus Laevis, On Georges Bank (Western North Atlantic), Todd Gedamke, William D. Dupaul, John A. Musick

VIMS Articles

The barndoor skate (Dipturus laevis) has been reported to be close to extinction in parts of its northern range and is believed to be particularly vulnerable to fishing mortality due to its relatively large size. A lack of basic life history information, however, has hampered an accurate assessment and management of north Atlantic populations. In an attempt to fill this void, information was collected from 2 310 specimens caught during commercial sea scallop dredging in the southern section of Georges Bank Closed Area II. Eighty-seven fish were determined to be mature from a visual inspection of reproductive tracts and the …

Herpes Virus In Juvenile Pacific Oysters Crassostrea Gigas From Tomales Bay, California, Coincides With Summer Mortality Episodes, Cs Friedman, Rm Estes, Na Stokes, Ca Burge, Js Hargove, Bj Barber, Ra Elston, Em Burreson, Kimberly S. Reece

VIMS Articles

Pacific Crassostrea gigas and eastern C. virginica oysters were examined between June 2002 and April 2003 from 8 locations along the east, west and south USA coasts for oyster herpes virus (OsHV) infections using the A primer set in a previously developed PCR test. Only surviving Pacific oysters from a mortality event in Tomales Bay, California, USA, where annual losses of oysters have occurred each summer since 1993, were infected with a herpes-like virus in 2002. PCR examination using template amounts of both 50 and 500 ng were essential for OsHV detection. Sequence analysis indicated that the Tomales Bay OsHV …

Comparison Of Two Approaches For Estimating Natural Mortality Based On Longevity, David A. Hewitt, John M. Hoenig

VIMS Articles

No abstract provided.

Quantification Of Drag And Lift Imposed By Pop-Up Satellite Archival Tags And Estimation Of The Metabolic Cost To Cownose Rays (Rhinoptera Bonasus), Donna S. Grusha, Mark R. Patterson

VIMS Articles

The recent development of the p)p-up satellite archival tag (PSAT) has allowed the collection of information on a tagged animal, such as geolocation, pressure (depth), and ambient water temperature. The success of early studies, where PSATs were used on pelagic fishes, has spurred increasing interest in the use of these tags on a large variety of species and age groups. However, some species and age groups may not be suitable candidates for carrying a PSAT because of the relatively large size of the tag and the consequent energy cost to the study animal. We examined potential energetic costs to carrying …

Mortality Estimation, Colin A. Simpfendorfer, Ramon Bonfil, Robert J. Latour

VIMS Books and Book Chapters

Mortality is an essential parameter in understanding the dynamics of any population and sharks are no exception. Without knowledge of how fast individuals are removed from a population it is impossible to model the population dynamics or estimate sustainable rates of exploitation or other useful management parameters.

Reproductive Biology, Christina L. Conrath

VIMS Books and Book Chapters

Several reproductive specializations are found within the elasmobranchs. All elasmobranchs fertilize internally and produce a relatively small number of large eggs. Elasmobranch fecundity generally ranges from one to two offspring produced a year up to a maximum of 300 in the whale shark (Compagno, 1990; Joung et al., 1996). Elasmobranch reproductive strategies include oviparity, aplacental viviparity and placental viviparity (Wourms, 1977). Oviparous species enclose eggs in an egg case and deposit them into the environment, where embryos develop external to the body of the mother . .Embryos remain in the egg case to develop for a period ranging from less …

Toward Identification Of Larval Sailfish (Istiophorus Platypterus), White Marlin (Tetrapturus Albidus), And Blue Marlin (Makaira Nigricans) In The Western North Atlantic Ocean, Stacy A. Luthy, Robert K. Cowen, Joseph E. Serafy, Jan Mcdowell

VIMS Articles

The identification of larval istiophorid billfishes from the western North Atlantic Ocean has long been problematic. In the present study, a molecular technique was used to positively identify 27 larval white marlin (Tetrapturus albidus), 96 larval blue marlin (Makaira nigricans), and 591 larval sailfish (Istiophorus platypterus) from the Straits of Florida and the Bahamas. Nine morphometric measurements were taken for a subset of larvae (species known), and lower jaw pigment patterns were recorded on a grid. Canonical variates analysis (CVA) was used to reveal the extent to which the combination of morphometric, pigment pattern, and month of capture information was …

Tagging Methods And Associated Data Analysis, Robert J. Latour

VIMS Books and Book Chapters

Tagging methods have a long history of use as tools to study animal populations. Although the first attempts to mark an animal occurred sometime between 218 and 201 B.C. (a Roman officer tied a note describing plans for military action to the leg of a swallow and when the bird was released it returned to its nest, which was in close proxiD?ity to the military outpost in need of the information), it is uncertain when fish :"ere first marked (McFarlane, Wydoski and Prince, 1990). An early report published 1? The_ Comp/eat Angler in 1653 by Isaak Walton described how private …

The Status Of Virginia's Public Oyster Resource 2004, Melissa Southworth, Juliana Harding, Roger L. Mann

Reports

This report summarizes data collected during 2004 in the Virginia portion of the Chesapeake Bay. The report is comprised of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia.

Stock Assessment Of The Blue Crab In Chesapeake Bay 2005: Final Report, Thomas J. Miller, Steven J.D. Martell, David B. Bunnell, (...), Christopher F. Bonzek, David Hewitt, John Hoenig, Rom Lipcius

Reports

The blue crab (Callinectes sapidus) is an icon for the Chesapeake Bay region. The commercial fisheries for blue crab in the Bay remain one of the most valuable fishery sectors in the Bay. Ecologically, blue crab is an important component of the Chesapeake Bay ecosystem. Thus, sound management to ensure the sustainability of this resource is critical.

The first bay wide assessment for blue crab was undertaken in 1995 and completed in 1997. It concluded that the stock was moderately to fully exploited and at average levels of abundance. Subsequent to this assessment concerns over the continuing status of blue …

Virginia Game Fish Tagging Program Annual Report 2004 (And 2003 Update), John A. Lucy, C.M. Bain Iii

Reports

The Virginia Game Fish Tagging Program (VGFTP), initiated in 1995, coordinates tagging and a tagrecapture fish database generated through contributed efforts of a dedicated corps of trained marine anglers. Through 2003-2004, the program’s database includes over 78,000 records of tag-released fish and approximately 7,800 recapture records of tagged fish.

Natal-River To Estuary Migration Of American Shad : Estimating The Value Of Essential Rearing Habitat And Identifying Potential Population Bottlenecks During Year-One, J. E. Olney, J. C. Hoffman

Reports

No abstract provided.

Blue Crabs In The Chesapeake - An Introduction To The Blue Crab, Lisa Lawrence, Vicki Clark, Jacques Van Montfrans, Susanna Musick

Reports

A classroom resource covering crab anatomy and glossary, life cycle of Callinectes sapidus, data tables, data analysis guides, and illustrations.

Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 2004-December 2004 : Annual Progress Report, Herbert M. Austin, Amanda H. Hewitt, Julia K. Ellis

Reports

The primary objective of the Virginia Institute of Marine Science juvenile striped bass survey is to monitor the relative annual recruitment success of juvenile striped bass in the major Virginia nursery areas of lower Chesapeake Bay. The U.S. Fish and Wildlife Service initially funded the survey from 1967 to 1973. After a hiatus ending in 1980, funds were provided by the National Marine Fisheries Service under the Emergency Striped Bass Study program. Commencing with the 1988 annual survey, the work was jointly supported by Wallop-Breaux funds (Sport Fish Restoration Act) administered through the U.S. Fish and Wildlife Service and the …

Marketing Virginia Croakcer, Stuart A. O'Bier

Reports

In the early 90's croaker stocks were at a low ebb and few were caught. But then stocks rebounded and for the last nine years or so 26 to 28 million pounds a year of the fish have been caught nationally. Croaker catch in the Chesapeake Bay followed a similar trend ranging between 10 and 15 million pounds for the years 1996 to 2003. National Marine Fisheries statistics trace out this resurgence in catch.

These big catch numbers will almost inevitably decline and may be doing so already. Large number of croakers were caught all through the 70's and then …

Virginia Oyster Aquaculture Production And Marketing Virginia Oyster Aquaculture Production And Marketing Survey, Paul Jesperson, Shawn Stickler

Reports

As aquaculture replaces wild harvest of oysters in the Chesapeake Bay region, we felt that there was a need to reevaluate how producers could get their products to market in the most efiicient, profitable way. In order to do this, we wanted to capture the lessons learned in other regions that have already made the progression from wild harvest to aquaculture, such as France, New England, and the Pacific Northwest.

In this study, we examined the methods of productions and marketing that are currently in use in regions beyond the Chesapeake, including the Northeastern United States, the Pacific Northwest, and …

Project Management For Virginia Seafood Council’S Economic Analysis Of Triploid C. Ariakensis Aquaculture (Year 1 And 2), A. J. Erskine

Reports

The Virginia Seafood Council (VSC) project for 2003-2005 focused on industry field trials with genetic triploid Crassoslrea ariakensis. This entailed deployment of approximately 100,000 C. ariakensis at each often industry participants' private oyster grounds to test aquaculture grow-out methods and marketability. In addition deployment of genetic triploid C. virginica allowed for a side-by-side comparison.

Floating Hedging, William Haynie

Reports

The floating hedging project was designed to reduce the high costs associated with net hedgings.

Investigation Of The Life History Of The Cownose Ray, Rhinoptera Bonasus (Mitchill 1815), Donna S. Grusha

Dissertations, Theses, and Masters Projects

No abstract provided.