Performance Report for Cooperative Agreement No: na06oar4810163 for the Period from September 1, 2006 to August 31, 2012 University of Maryland Eastern Shore


SECTION IV – REVISIONS TO TASKS AS DESCRIBED IN GRANT AWARD AMENDMENTS AND THE IMPACT TO THE AWARD: There were no amendments to the award



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SECTION IV – REVISIONS TO TASKS AS DESCRIBED IN GRANT AWARD AMENDMENTS AND THE IMPACT TO THE AWARD: There were no amendments to the award.




Appendices

Appendix I:

Appendix Ia: Courses Offered in Fall Semester 2006 Using Interactive Video Network (IVN).

MEES 698G

Marine Geology

MEES 698Q

Stream Ecology

MEES 682

Fisheries Science & Management

MEES 698R

Community Ecology

MEES 607

Quantitative Methods


Appendix Ib: Courses Offered in Spring Semester 2007 Using Interactive Video Network (IVN).

MEES 498B

Biometry

MEES 608D

Scientific Writing & Communication

MEES 608L

Molecular Microbial Ecology

MEES 608X

Advanced Topics in Aquatic Ecology

MEES 608Y

Topics in Wildlife & Conservation Ecology

MEES 627

Environmental Geochemistry

MEES 661

Physics of Marine and Estuarine Environments

MEES 698A

Aquatic Microbial Ecology


Appendix Ic: Courses Offered in Fall Semester 2007 Using Interactive Video Network (IVN).

MEES 698F

Biology of Fishes

MEES 634

Bioenergetics & Population Dynamics

MEES 621

Biological Oceanography

MEES 607

Quantitative Methods

MEES 698E

Zooplankton Ecology


Appendix Id: Courses Offered in Spring Semester 2008 Using Interactive Video Network (IVN).

Course

Title

Names of Students who took the course

MEES 608I

Algal Blooms




MEES 608L

Marine Microbial Ecology




MEES 608R

Global Environmental Remote Sensing




MEES 608T

Analytical Techniques Seminar in Environmental Science




MEES 611

Estuarine Ecology




MEES 631

Fish Ecology

Dan Cullen (M.S. UMES/LMRCSC),

Josh Newhard (M.S. UMES/LMRCSC)



MEES 661

Physical Ocean




MEES 698A

Aquatic Microbial Ecology




MEES 698D

Dynamics of Exploited Marine Resources




MEES 698E

Ecosystem Restoration




MEES 698O

Hydrological Effects




MEES 698Y

Stream Restoration




MEES 743

Aquatic Toxicology






Appendix Ie: Courses Offered in Fall Semester 2008 Using Interactive Video Network (IVN).

Course

Title

Names of Students who took the course

MEES 626

Env. Geochemistry I




MEES 614

Landscape Ecology




MEES 682

Fisheries Science and Management

Dan Cullen (M.S. UMES/LMRCSC),

Josh Newhard (M.S. UMES/LMRCSC)



MEES 698Q

Stream Ecology




MEES 698G

Marine Geology







Diseases of the Chesapeake Bay

Andriy Tkachenko (Ph.D UMES)

MEES 608E

Operational Marine Ecology: Closing the Gap Between Science and Management

Dan Cullen (M.S. UMES/LMRCSC)

Adriana Ortiz (M.S. UMES)



MEES 610

Land Margins




MEES 621

Biol. Oceanography




MEES 608G

Microbial & Environmental Genomics by Hill R, & Chen, F.

7 UMBI-Comb students

MEES 698C

Cell and Molecular Biology

Lonnie Gonsalves (Ph.D/LMRCSC)

Msano Mandalasi (Ph.D UMES)

Nelum Dorabiwila (M.S. UMES)


MEES 607

Quantitative Methods




MEES 698E

Ecosystem Restoration




MEES 608D

Scientific Writing





Appendix If: Courses developed and taught by LMRCSC faculty and NOAA Collaborators via the LMRCSC Virtual Campus in Spring 2009.

Course No

Title

Students Enrolled

MEES 688 Section 0201

Introduction to Resource Economics (Wallmo and Tomberlin)

Tedra Booker (PhD, UMES/LMRCSC)

Mary Phipps-Dickerson (PhD, UMES/LMRCSC)

Jacklyn James (M.S., UMES/LMRCSC)

Jamila Payton (M.S., UMES/LMRCSC)

Johnny Moore (M.S., DSU/LMRCSC)

Marissa Brady (M.S., DSU/LMRCSC)

Michael Cinelli (M.S., DSU)

Matt Breece (M.S., DSU)



MBF 613

Marine Population Dynamics (David Die & Nelson Ehrhardt)

William Harford        (PhD, RSMAS)

Dominique Lazarre   (PhD, RSMAS)

Katrina Phillips         (M.S., RSMAS)

Adam Greer             (PhD, RSMAS)

John Hoolihan         (PhD, RSMAS)

Rob Waara              Part time (NP employee)


Marissa Brady (MS, DSU)

Matthew Breece (MS, DSU)

Frank Marenghi (MS, DSU)

Johnny Moore (MS, DSU)

Jordan Zimmerman (MS, DSU)

Michael Cinelli (MS, DSU)



MEES 688 Section 0101

Fish Immunology by A. Johnson & R. Jagus

Tedra Booker (PhD UMES/LMRCSC)

Mary Phipps-Dickerson (PhD UMES/LMRCSC)

Lonnie Gonsalves (PhD UMES/LMRCSC)

Jhamyllia Rice (M.S. UMES/LMRCSC)

Jamila Payton (M.S. UMES/LMRCSC)

Xiliang Jiang (PhD UMES/COMB)





Appendix Ig: MEES Courses Offered in Spring Semester 2009 Using Interactive Video Network (IVN).

Course No

Title

Students Enrolled

MEES 608L (UMBI-COMB)

Molecular Microbial Ecology Sem (R. Hill, F. Chen)




MEES 608T

Analytical Techniques Sem




MEES 608X

Neoclassical Papers in Aquatic Ecology Seminar




MEES 661

Physical Oceanography




MEES 698

Fisheries Oceanography




MEES 698D

Advanced Population Dynamics and Assessment

Eryn Kahler (M.S. UMES/LMRCSC)

Adrianna Ortiz (M.S. UMES)

Tunde Adebola (M..S UMES)


MEES 698E

Physiological Ecology of Animals




MEES 698F

Fisheries Oceanography




MEES 698T

Biometry

Eryn Kahler (M.S. UMES/LMRCSC),

MEES 698V

Special Topics in Marine-Estuarine-Environmental Sciences





Appendix Ih: MEES Courses Offered in Fall Semester 2009 Using Interactive Video Network (IVN).

Course

Title

Names of Students who took the course

MEES 698

MEES Seminar: Chesapeake Bay Health

Adam Tulu (Ph.D UMES/LMRCSC),

Jamila Payton (M.S. UMES/LMRCSC)



MEES 621

Biol. Oceanography

Shari Mullen (Ph.D. UMES/LMRCSC)

Eric Evans (Ph.D. UMES/LMRCSC)

Jamila Payton (M.S. UMES/LMRCSC)



Appendix Ii: Course taught by LMRCSC faculty and NOAA Collaborators via the LMRCSC Virtual Campus in Spring 2010.

Course No

Title

Students Enrolled

MEES 608N

Fisheries Policy and Management

Eric Evans (PhD UMES/LMRCSC)

Belita Nguluwe (M.S. UMES/LMRCSC)

Ejiroghene Mayor (M.S. UMES)

Efeturi Oghenekaro (M.S. UMES)

Kate Fleming (M.S. DSU/LMRCSC)

Marissa Brady (M.S. DSU/LMRCSC)

Matt Breece (M.S. DSU/LMRCSC)

Michael Cinelli (M.S. DSU/LMRCSC)

Beau Croll (M.S. DSU)

Jordan Zimmerman (DSU/DNREC)




Appendix Ij: MEES Courses Offered in Spring Semester 2010 Using Interactive Video Network (IVN).

Course

Title

Names of Students who took the course

MEES631

Fisheries Ecology

Shari Mullen (Ph.D. UMES/LMRCSC)

Eric Evans (Ph.D. UMES/LMRCSC)

Jamila Payton (M.S. UMES/LMRCSC)

Belita Nguluwe (M.S. UMES/LMRCSC)



MEES743

Aquatic Toxicology

Adam Tulu (Ph.D. UMES/LMRCSC)

Marthe Angama (M.S. UMES)



Appendix Ik: MEES Courses Offered in Fall Semester 2010 Using Interactive Video Network (IVN).

Course Number

Course

Instructor

Students Enrolled

MEES 698E

Ecosystem Restoration

Kaushal




MEES 626

Env. Geochemistry I

Schijf




MEES 698I

Chesapeake Bay Health

Mitchelmore




MEES698C

Molecular Biology

Al Place & Rose Jagus

(UMCES-IMET)



Belita Nguluwe (MS, UMES),

Rehab El Fadul (PhD, UMES)



MEES608L

Genomic Seminar

Russel Hill & Feng Chen

(UMCES-IMET)






MEES 682.

Fish Science & Management

Secor et al.

(UMCES-CBL)



2 students

MEES 608P

Env. Pollution Seminar

Mitchelmore & Rowe




MEES621

Biological Oceanography

Raleigh Hood et al.

(UMCES-Horn Point Lab)



Belita Nguluwe (M.S., UMES)

Whitney Dyson (M.S., UMES)

Bhae Jin Peemoeller (M.S., UMES)

Efeturi Oghenekaro (M.S/Ph.D,. UMES)

Ejiro Mayor (M.S./Ph.D., UMES)


MEES698G

Marine Geology

Palinkas

Shari Mullen (PhD, UMES)

MEES607

Quantitative Methods

Sanford

Jan Vicente Rozckow (Ph.D., IMET)

MEES608D

Scientific Writing & Communications

Victor Kennedy

(UMCES-Horn Point Lab)






MEES608C

Diseases in the Chesapeake Bay

Eric Schott

(UMCES-IMET)



2 students



Appendix Il: MEES Courses Offered in Spring Semester 2011 Using Interactive Video Network (IVN).

Course number

Course Title

Instructor

Students

MEES698D

Advanced Population Dynamics

Michael Wilberg (UMCES-CBL)

Dan Cullen (Ph.D., UMES)

Shari Mullen (Ph.D., UMES)

Belita Nguluwe (M.S., UMES)

Heather Wolfer (M.S., UMES)

Bhae-Jin Peemoeller (M.S., UMES)


MEES698M

Comparative Mol. Endocrinology

Sook Chung

(UMCES-IMET)



Jamila Payton (M.S., UMES)

Tedra Booker (Ph.D., UMES)



MEES698E

Physiological Ecology of Animals

Rowe

Jamila Payton (M.S., UMES)

MEES698T

Environmental Statistics

Bi

(UMCES-CBL)



Dan Cullen (Ph.D., UMES)

Bhae Jin Peemoeller (M.S., UMES)



M698B

Biometry

Hilderbrand

Belita Nguluwe (M.S., UMES)

Heather Wolfer (M.S., UMES)



MEES661

Physical Oceanography

Chao & Li

 

M608X

Aquatic Readings Seminar

Morgan/AL

 

MEES608P

Oil Pollution in Aquatic Environment

C. Mitchelmore

Shari Mullen (Ph.D., UMES)

Courtney McGeachy (M.S., UMES)

Belita Nguluwe (M.S., UMES)

Efeturi Oghenekaro (M.S./Ph.D., UMES)



MEES608L

Marine Microbial Ecology Seminar

Feng Chen & Russel Hill

(UMCES-IMET)



 


Appendix Im: MEES Courses Offered in Fall Semester 2011 Using Interactive Video Network (IVN).

Course Number

Course

Instructor

Students Enrolled

MEES 608B

Climate Change and Biosphere (Seminar)

Kilbourne

Dan Cullen (Ph.D., UMES)

Heather Wolfer (M.S., UMES)



MEES 608K

Fluid Dynamics

Koch and Sanford

 

MEES 610

Land Margins

Fisher

 

MEES 682.

Fish Science & Management

Secor et al.

 

MEES 698E

History of Ecology

Kangas

 

MEES 698R

Stable Isotopes

Nelson and Cooper

 

MEES 698X

Remote Sensing

Elmore

 

MEES607

Quantitative Methods

Harris

 

MEES608C

Diseases in the Chesapeake Bay

Schott

 

MEES608D

Scientific Writing & Communications

Kennedy

Bhae Jin Peemoeller (M.S., UMES)

Whitney Dyson (M.S., UMES)



MEES608L

Genomic Seminar

Hill & Chen

 

MEES621

Biological Oceanography

Hood et al.

Belita Nguluwe (M.S., UMES)

MEES698C

Cell and Molecular Biology

Place & Jagus

Bhae Jin Peemoeller (M.S., UMES)

MEES698G

Microbial and Env.

Chen and Hill

 

MEES698M

Practical Protein Chemistry

Ahmed

 


Appendix In: Courses Offered Online during Fall Semester 2011

Course number

Course Title

Instructor

Students (online)

AGSC 605

Agricultural Statistics

Jeanine Harter-Dennis

Cornelius Chilaka (PSM, UMES)

Evan Lindsay (PSM, UMES)

Andrew Turner (PSM, UMES)

Leonardo Matthews (PSM, UMES)

Jeffrey Kipp (PSM, UMES)

Kristen Lycett (M.S., UMES)



MEES688

Fishery Survey Sampling

Brad Stevens

Andrea Stoneman (M.S., DSU)

Jessica Blaylock (PSM, UMES)

Michele Traver (PSM, UMES)


MEES688P

Personnel Development

Michael Costello

Joseph Drummond (PSM, UMES)

Cornelius Chilaka (PSM, UMES)

Evan Lindsay (PSM, UMES)

Leonardo Matthews (PSM, UMES)

Andrew Turner (PSM, UMES)

Jeffrey Kipp (PSM, UMES)



MEES 688

Fish Ecology

P. Chigbu & E.B. May

Jessica Blaylock (PSM, UMES)

Andrea Stoneman (M.S., DSU)

Courtney McGeachy (M.S., UMES)

Whitney Dyson (M.S., UMES)



MEES643

Risk and Decision Analysis

Mohammad Ali

Jessica Blaylock (PSM, UMES)

Joseph Drummond (PSM, UMES)

Evan Lindsay (PSM, UMES)

Leonardo Matthews (PSM, UMES)

Andrew Turner (PSM, UMES)

Jeffrey Kipp (PSM, UMES)




Appendix II:

Appendix IIa: Brief Descriptions of TAB Approved Projects (2006/2007)
TAB Approved Projects 2006/2007 Status

The 11 TAB approved projects for year 1 of the new Center grant are described below.


1) Project Title: Effect of isopod parasite Probopyrus pandalicola on the grass shrimp Palaeomonetes pugio: Impacts on population density, gravidity, and tolerance to contaminants

Project Description: Palaemonetes pugio is a food source for numerous commercially important species. Habitat quality is in part based on food availability and can be determined indirectly by assessing fish growth (Curran and Able 2002; DuBeck and Curran, in review). As grass shrimp are an abundant macrofaunal species, their density can play an important role in determining habitat quality and therefore whether areas could be essential fish habitats. The main objective of this work is to determine the effect that the isopod parasite Probopyrus pandalicola has on grass shrimp density (since they prevent reproduction) and construct a population model to quantify this impact. Results will be disseminated to local schools through the funded participants, including a teacher-intern who will design a K-12 activity.

Thematic Area Addressed: Essential Fish Habitat

Lead Scientist(s): Dr. Mary Carla Curran (SSU)

NOAA Collaborator(s): Dr. Paul Pennington (NOAA)

LMRCSC Collaborator(s): Dr. Dionne Hoskins (NOAA Fisheries/SSU)

LMRCSC Research Student(s): Michael Partridge (M.S. student, SSU), Chris Williamson (undergraduate student, SSU), Amber Stanley (undergraduate student, SSU), Jennifer Kinney (undergraduate student, SSU), and Terry Aultman (teacher-intern)

External Collaborator(s): none

Planned Start Date: Fall 2005

Planned End Date: Sept 2007

Actual Start Date: Oct. 1, 2005

Actual End Date: Sept. 30, 2007

Planned and actual results of project: One of the objectives was to determine the effect that the bopyrid isopod has on grass shrimp density and construct a population model to quantify this impact. In addition, in year 1, studies were conducted to determine whether multistressors (e.g., parasite infection and contamination load) had an additive effect on shrimp mortality in the laboratory. Due to student interest, year 1 efforts focused on the laboratory studies. Michael Partridge (SSU Graduate Student) conducted thesis research on the effect of the parasite on swimming endurance in the grass shrimp. No effect of the parasite on shrimp endurance has been demonstrated, although there seems to be a direct relationship between endurance and shrimp size. It was found that the toxicity of resmethrin/Scourge was not higher for parasitized vs. unparasitized grass shrimp as determined using an LC50 test. This work was extended to conduct a toxicity test using another insecticide, bifenthrin. The results for the LC50 ratio test were that the effect of bifenthrin on parasitized when compared to non-parasitized P. pugio was significantly different at 24 hours (P = 0.0065).

For the field assessment/shrimp population model it was observed that shrimp densities did not exceed 40.8 shrimp/m3 at Country Club Creek, but values reached 145.6/ m3 at Moon River. The overall percent parasitism rate was low (<1%); however, 56% of the females were gravid.


How will results be incorporated into NOAA Fisheries operations? Results from this research are relevant to the management, conservation, and protection of living marine resources, all of which are part of the NOAA mission. The significance of grass shrimp as an important food resource for many commercial species has been demonstrated and this resource can be affected by insecticides. In some cases, sensitivity to pesticides is greater when the shrimp is parasitized by a bopyrid isopod. In addition, this isopod prevents the shrimp from reproducing, which in turn can affect shrimp populations and thereby impact habitat quality.

How will results be incorporated into LMRCSC research and curriculum? Dr. Curran’s teacher intern incorporated her findings into K-12 curricula. Dr. Curran is incorporating her field experience into her classroom teachings, and both she and her students have spoken at local schools. This project was used for Mr. Partridge’s Master’s thesis. The project also provided an opportunity for Chris Williamson (SSU Undergraduate Student) to work with Paul Pennington (NOAA) in the summer of 2007.
2) Project Title: Evaluation of interactive effects of contaminants on full life cycle responses for assessing fish habitat quality in estuaries

Project Description: Inshore habitats are used by a variety of marine and estuarine organisms as a source of prey, location for reproduction, and shelter during vulnerable life-stages. These habitats are also the principal location for the infusion of contaminants into the marine environment. Understanding the extent and nature of contamination along industrialized watersheds, as well as the complexity of potential toxic responses by impacted organisms, remains a significant challenge to researchers and resource managers. This study is to experimentally examine the toxic response in a fish resident to estuarine waters of the northeastern USA. The objectives were to: 1) examine the interactive and additive effects of a combination of ecologically relevant contaminants on an indicator fish species, 2) broaden the set of response variables collected previously by us to include characteristics of juveniles and of reproductive performance by adults, and 3) evaluate the relative merit of each response variable for its utility as a bioindicator.

Thematic Area Addressed: Essential Fish Habitat

Lead Scientist(s): Dr. Ali Ishaque (UMES), Dr. Yan Waguespack (UMES) and Dr. Chris Chambers (NOAA/NMFS)

NOAA Collaborator(s): Dr. Chris Chambers (NOAA/NMFS)

LMRCSC Collaborator(s): None

LMRCSC Research Student(s): Jeremiah Hicks (Undergraduate, UMES) participated in an internship at the Sandy Hook lab in summer 2007.

Planned (Actual) Start Date: 12/01/06

Planned End Date: 11/30/08

Planned and actual results of project: The goal of this research was to capture the multifaceted and sometimes subtle ways that toxicological effects can be manifested, and to inter-calibrate and compare these effects with respect to their relative merits as bio-indicators. The responses to be evaluated span the spectrum from molecular to organismal to population-level effects. The focus in Yr 1 was to develop protocols and identify relevant responses exhibited in the earliest life-stages (embryonic and early larval periods). These responses include viability, developmental rate, and various measures of fish condition upon hatching. These measures can be coarsely divided into lethal and sub-lethal responses; the latter can be further divided into biochemical, histological, developmental, morphological, condition, behavioral, and life history groupings with specificity to life stages. Larvae were grown to sub-adulthood. During the period of study in Year 1, the researchers also identified the best means of administering the contaminants and marking fish such that the treatment histories of individuals could be identified upon pooling groups into larger rearing tanks.

During the period since Year 2 the study has:



1) Continued the extraction of data from images of young fish from Year-1 experimental rearing, and synthesized data on developmental rates, resistance of larvae to starvation, and survival, 2) Refined the experimental protocol which allows for repeated exposures of larvae to PCBs, 3) Implemented a more robust experimental design (Year 2) with more life stage-specific rearing options and greater experimental replication, 4) Exposed embryos from a reference (Shinnecock Bay, NY) and an impacted (Hudson River) population of Atlantic tomcod to a graded dose of two PAHs and an Aroclor mixture of PCBs. Larvae from these exposures are currently being reared and repeatedly exposed to Aroclor via their food source. 5) Synthesized and reduced data already in hand from Year 2, and 6) Prepared total RNA from tomcod ovaries for the purpose of obtaining cDNA sequences using degenerate primers. Once obtained, the sequence will be cloned and sequenced.

How will results be incorporated into NOAA Fisheries operations? These studies will provide first-of-their-kind evaluations of the interactive effects of multiple toxins on early life stages of a common estuarine fish of the northeastern USA. Moreover, the quantification and comparisons of multiple lethal and sublethal responses should have general utility for identifying appropriate bioindicators in other ecotoxicological studies using fishes. The implementation of an experimental design that explicitly addresses the interactive effects of two classes of contaminants, and evaluates the biological responses throughout all pre-adult life stages is unique to this field. Beyond the specific information on the species, system, and contaminants being used in this study, the results will provide guidance to researchers working with other species in other ecosystems.

How will results be incorporated into LMRCSC research and curriculum? The protocols that are being developed regarding aqueous and trophic exposures for fish, and the quantification of multiple ecologically relevant response variables, will have broad applicability to other ecotoxicological studies on aquatic and marine organisms. It is expected that the skills being developed by interns and students will not only enhance their education, but result in these individuals being well situated for placement in their working careers.
3) Project Title: The biology of large monkfish, Lophius americanus

Project Description: The American monkfish or goosefish (Lophius americanus; Valenciennes) is a fast growing, benthic species belonging to the family Lophiidae (Steimle et al., 1999). It is found in the northwest Atlantic Ocean from the Grand Banks and northern Gulf of St. Lawrence, Canada to the east coast of Florida (DNR, 1999; NEFMC/MAFMC, 1998). Although the species ranges from Canada to Florida, it is most commonly found north of Cape Hatteras, North Carolina (Robbins et al., 1986) in shallow coastal waters to over 800 m (Stevens, 2004).

Once considered ‘trash fish’ by the groundfish and scallop fisheries, monkfish has become an important commercial species. The US stocks have been overfished, and few large monkfish are now found in commercial landings or in Northeast Fisheries Science Center (NEFSC) annual bottom trawl surveys (NEFSC 2005). Although life history information is available for smaller monkfish, very little is known about the biology of monkfish greater than 90cm. The purpose of this study, therefore, was to: 1) estimate growth and cannibalism rates of large monkfish; and 2) investigate reproductive biology of large monkfish.



Thematic Area Addressed: Quantitative Fisheries

Lead Scientist(s): Dr. Andrea Johnson (UMES)

NOAA Collaborator(s): Dr. Anne Richards (NOAA, NEFSC, Woods Hole)

LMRCSC Collaborator(s): none

LMRCSC Research Student(s): Dan Cullen (Graduate student, UMES); Abram Townsend (Undergraduate, UMES), Belita Nguluwe (Undergraduate, UMES)

Industry collaborators: John Stolgitis (Point Judith, RI), Chris Hickman (Chincoteague, VA and Cape Hatteras, NC) and Roger Wooleyhan (Ocean City, MD), Ernie Panacek (Barnegat Light, NJ), Chris Walker (Chincoteague, VA), Joe Kelly (Chincoteague, VA) and other gillnetters.

Actual Start Date: January 4, 2007

Actual End Date: March 31, 2008

Planned and actual results of project: It was proposed to collect monkfish, 90 cm and larger from January to December, 2007 from commercial gillnetters to: 1) determine the full growth curve and provide critical information on growth, natural mortality, longevity, and potential yield; 2) determine spawning frequency of these large monkfish to determine population productivity and resilience; and 3) estimate the rates of cannibalism by large monkfish to improve population models and fishery management.

Since January 2007, approximately 700 monkfish samples from fishing areas east of Gloucester, MA, to areas off Ocean City, MD and Chincoteague, VA have been collected. To date, approximately 400 monkfish have been aged using both vertebrae and illicia and 383 gonads have been processed for histology. Of the 700 fish that have been processed, approximately 5% cannibalism has been observed.



Fish Collection and Processing: A total of 700 monkfish were collected by commercial gillnetters in waters off Cape Ann, Massachusetts to Chincoteague, Virginia between January 2006 and July 2007. These sampling sites encompass the two management areas for monkfish, the Northern Fishery Management Area (NFMA, northern flank of Georges Bank and the Gulf of Maine) and the Southern Fishery Management Area (SFMA, southern flank of Georges Bank and Mid-Atlantic Bight south to Cape Hatteras, NC). Fish were processed in the laboratory. Individuals were weighed (kg) and measured (total length (TL) to the nearest 0.5 cm, and samples collected for studies of growth, food habits and reproductive biology.

Age and Growth: Vertebrae were processed following the procedures of Armstrong et al. (1992) and Hartley (1995). Vertebra number 8 was baked for 1-1.5 hr at 230oC to enhance the contrast in presumed annual rings before counts were made using a dissecting microscope at 60x. All vertebrae were read by 2 or 3 independent readers and agreement between two readers was required for acceptance of an age estimate. Vertebrae were classified as “unreadable” if all readings differed.

Reproduction: All gonad samples (n = 383 females) were examined histologically by light microscopy and assigned maturity stages following the criteria of Martinez (1999). Female stages [perinucleolar, cortical alveoli, vitellogenic and final stage of oocyte maturation (FOM, hydrated)] were based on the maturity of the most advanced stage oocytes. Gonads and livers were weighed to calculate the gonadosomatic index (GSI) and the hepato-somatic index (HSI):
GSI=100WG (W-WG) ˉ1

HSI = 100WH (W-WH) ˉ1
Where, WG= gonad weight; WH = liver weight; W= body weight
Food Habits: Stomachs were removed and contents weighed. Prey items were sorted, identified to the lowest taxon possible, enumerated, weighed by prey category, and measured if possible. State of digestion of prey items was classified as fresh, partially digested or well digested. Intact monkfish prey were measured, weighed, and dissected to determine gender. The percent frequency of occurrence was calculated for major taxonomic prey groups and rate of cannibalism was determined for monkfish at each macroscopic gonadal stage (developing, ripe and spent).

Statistical Analyses: An analysis of variance (ANOVA) was used to test the influence of month and gonadal stage on GSI and HSI. A visual assessment of residual plots was used to determine homogeneity of variance. To satisfy homogeneity of variance, HSI and GSI were natural log transformed. Significant ANOVAs (P < 0.05) were followed by Tukey’s multiple comparison tests (Neter et al. 1996).


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