Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Ecology and Evolutionary Biology (14)
- Marine Biology (13)
- Population Biology (13)
- Biology (9)
- Terrestrial and Aquatic Ecology (9)
-
- Immunology and Infectious Disease (7)
- Physiology (7)
- Zoology (7)
- Environmental Health (6)
- Immunity (6)
- Nutrition (6)
- Other Nutrition (6)
- Parasitology (6)
- Pharmacology, Toxicology and Environmental Health (6)
- Bioresource and Agricultural Engineering (5)
- Engineering (5)
- Agriculture (4)
- Oceanography and Atmospheric Sciences and Meteorology (4)
- Physical Sciences and Mathematics (4)
- Environmental Sciences (3)
- Fresh Water Studies (3)
- Social and Behavioral Sciences (3)
- Communication (2)
- Geography (2)
- Interpersonal and Small Group Communication (2)
- Medicine and Health Sciences (2)
- Agribusiness (1)
- Institution
- Keyword
-
- Wildlife and Fisheries Ecology and Managment (8)
- Aquaculture and Fisheries (4)
- Cormorant (3)
- Human–wildlife conflicts (3)
- Predation (3)
-
- Tilapia farming and effects of nutraceuticals (3)
- Adaptive management (2)
- Agriculture, Community-based Research (2)
- Aquaculture (2)
- Catfish (2)
- Cormorants (2)
- Fish drying (2)
- Interpersonal and small group communication, Mass communication, Communication technology and New Media (2)
- Nitrogen (2)
- Phalacrocorax auritus (2)
- Population control (2)
- Quality (2)
- Reproductive control (2)
- Reservoirs (2)
- Satellite telemetry (2)
- <p>The Plesiosauria (Reptilia: Sauropterygia) is a group of Mesozoic marine reptiles known from abundant material, with specimens described from all continents. The group originated very near the Triassic–Jurassic boundary and persisted to the end- Cretaceous mass extinction. This study describes the results of a specimen-based cladistic study of the Plesiosauria, based on examination of 34 taxa scored for 166 morphological characters. The Pliosauroidea is found to by polyphyletic due to the inclusion of the Polycotylidae; this second clade is instead a member of the Plesiosauroidea, and thus more closely related to elasmosaurs than to other ‘pliosaurs’. Characters of body proportion such as neck length and head size are very labile, with the ‘pliosauromorph’ body plan evolving three times, while extremely long necks evolved in two clades. Characters from the entire skeleton support these relationships, although characters of the skull roof and palate are especially useful. Lastly, a new genus and species, Hauffiosaurus zanoni, is named based on German material of Toarcian age.</p> (1)
- Acetaminophen (1)
- Addiction (1)
- Agronomy and Crop Sciences (1)
- Alpine (1)
- Aquaculture Feeds (1)
- Aspect ratio (1)
- Baiting (1)
- Bioinformatics (1)
- Biology (1)
- Publication
- File Type
Articles 1 - 30 of 39
Full-Text Articles in Aquaculture and Fisheries
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
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
Marta Gomez-Chiarri
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 …
Use Of Communication Media In Wetland Fisheries Development Of Assam, Ganesh Chandra
Use Of Communication Media In Wetland Fisheries Development Of Assam, Ganesh Chandra
Ganesh Chandra
The study was carried out in 21 districts of Assam. Two categories of respondents, namely fishers (106 nos) of floodplain wetlands and lower level field extension functionaries (30 officials) constituted the sample for the study. The study revealed that the interpersonal communication sources like consultation with Fisheries Extention Officer Beel manager and scientists were the most important sources for obtaining information on new, improved practices. Demonstration and consultation with progressive farmers were assigned second and third rank. Field extension functionaries preferred group discussion as the main source of extension programme followed by demonstration, fisheries publication and field day/ fish farmers' …
Constraints In Adoption Of Moongbean Production Technology In Sundarban, West Bengal, Ganesh Chandra
Constraints In Adoption Of Moongbean Production Technology In Sundarban, West Bengal, Ganesh Chandra
Ganesh Chandra
The new agricultural technologies are considered to be the prime mover to the process of agricultural development in India. Understanding farmers’ perceptions of a given technology is crucial in the generation and diffusion of new technologies and farm household information dissemination. Pulses in India have long been considered as the poor man’s only source of protein. Moongbean (green gram) is one of the important pulse crop in India, plays a major role in augmenting the income of small and marginal farmers of Sundarban. Constraints are the circumstances or causes, which prohibit farmer to adopt improved farm technology. This constraint study …
Nitrogen Flow Pathways Through An Alpine Lake, David Epstein, Wayne Wurtsbaugh
Nitrogen Flow Pathways Through An Alpine Lake, David Epstein, Wayne Wurtsbaugh
David Epstein
No abstract provided.
Nutrient Transport Through Lakes In A Sub-Alpine Watershed In The Sawtooth Mountains Of Idaho, David Epstein
Nutrient Transport Through Lakes In A Sub-Alpine Watershed In The Sawtooth Mountains Of Idaho, David Epstein
David Epstein
No abstract provided.
Nitrogen Transport Through A Sub-Alpine Lake: Bull Trout Lake Whole Ecosystem 15N Tracer Study, David Epstein, Wayne Wurtsbaugh
Nitrogen Transport Through A Sub-Alpine Lake: Bull Trout Lake Whole Ecosystem 15N Tracer Study, David Epstein, Wayne Wurtsbaugh
David Epstein
No abstract provided.
Patterns Of Life History And Habitat Use Of An Important Recreational Fishery Species, Spotfin Croaker, And Their Potential Fishery Implications, Jonathan Williams, Jeremy Claisse, Daniel Pondella, Lea Medeiros, Charles Valle, Michael Shane
Patterns Of Life History And Habitat Use Of An Important Recreational Fishery Species, Spotfin Croaker, And Their Potential Fishery Implications, Jonathan Williams, Jeremy Claisse, Daniel Pondella, Lea Medeiros, Charles Valle, Michael Shane
Daniel Pondella
Spotfin croakers Roncador stearnsii, a prized recreational catch, were collected throughout the Southern California Bight, primarily as bycatch from a long-term, scientific gill-net collection effort. The maximum otolith-based age in the present study was 24 years—14 years greater than in a previous scale-based aging study. Multiple models were used to estimate mean length at age, including models that utilize larvae as well as juveniles and adults, and the model selection results suggest sexual dimorphism in growth patterns. The juvenile and adult catch per unit effort reflected a clear pattern of habitat selectivity, with fish strongly preferring soft-bottom habitats. Catches …
El Niño Periods Increase Growth Of Juvenile White Seabass (Atractoscion Nobilis) In The Southern California Bight, Jonathan Williams, Larry Allen, Mark Steele, Daniel Pondella
El Niño Periods Increase Growth Of Juvenile White Seabass (Atractoscion Nobilis) In The Southern California Bight, Jonathan Williams, Larry Allen, Mark Steele, Daniel Pondella
Daniel Pondella
Studies of the impact of El Niño periods on marine species have usually focused on negative, highly visible eVects, e.g., decreasing growth rates or increasing mortality due to a decline in primary productivity in typically nutrient rich upwelling zones; but positive effects related to elevated water temperature are also known. This study examined how the growth rate of juvenile white seabass, Atractoscion nobilis, responded to changes in ocean temperature in an El Niño period (1997–1998) in the northern portion of the Southern California Bight, USA. Growth rates of juvenile white seabass during their first 4 years of life were …
New Record Of Pacific Sierra (Scomberomorus Sierra) With Notes On Previous California Records, Jonathan P. Williams, Daniel J. Pondella Ii, Brent M. Haggin, Larry G. Allen
New Record Of Pacific Sierra (Scomberomorus Sierra) With Notes On Previous California Records, Jonathan P. Williams, Daniel J. Pondella Ii, Brent M. Haggin, Larry G. Allen
Daniel Pondella
On 22 October 2006, a Pacific sierra (Scomberomorus sierra) was caught by gillnet near Mother’s Beach, Marina del Rey, Los Angeles County, California (33º58’50"N, 118º27’25"W) during sampling for juvenile white seabass (Atractoscion nobilis). This catch represents the northernmost record of Pacific sierra, and one of several specimens known from California.
Application Of Gis In Inland Fisheries. Training Manual, Sanjeev Kumar Sahu, Ganesh Chandra
Application Of Gis In Inland Fisheries. Training Manual, Sanjeev Kumar Sahu, Ganesh Chandra
Ganesh Chandra
No abstract provided.
Ecomorphology Of Plesiosaur Flipper Geometry, F. O’Keefe
Ecomorphology Of Plesiosaur Flipper Geometry, F. O’Keefe
F. Robin O’Keefe
The Plesiosauria is an extinct group of marine reptiles once common in mesozoic seas. Previous work on plesiosaur hunting styles has suggested that short-necked, large-headed animals were pursuit predators, whereas long-necked, small-headed animals were ambush predators. This study presents new data on the aspect ratios (ARs) of plesiosaur flippers, and interprets these data via comparison with AR in birds, bats and aircraft. Performance trade-offs implicit in AR variation are well-understood in the context of aircraft design, and these trade-offs have direct ecomorphological analogues in birds and bats. Knowledge of these trade-offs allows interpretation of variation in plesiosaur AR. By analogy, …
A Cladistic Analysis And Taxonomic Revision Of The Plesiosauria (Reptilia: Sauropterygia), F. Robin O’Keefe
A Cladistic Analysis And Taxonomic Revision Of The Plesiosauria (Reptilia: Sauropterygia), F. Robin O’Keefe
F. Robin O’Keefe
The Plesiosauria (Reptilia: Sauropterygia) is a group of Mesozoic marine reptiles known from abundant material, with specimens described from all continents. The group originated very near the Triassic–Jurassic boundary and persisted to the end- Cretaceous mass extinction. This study describes the results of a specimen-based cladistic study of the Plesiosauria, based on examination of 34 taxa scored for 166 morphological characters. The Pliosauroidea is found to by polyphyletic due to the inclusion of the Polycotylidae; this second clade is instead a member of the Plesiosauroidea, and thus more closely related to elasmosaurs than to other ‘pliosaurs’. Characters of body proportion …
Morphologic And Ontogenetic Patterns In Elasmosaur Neck Length, With Comments On The Taxonomic Utility Of Neck Length Variables, F. Robin O’Keefe, Norton Hiller
Morphologic And Ontogenetic Patterns In Elasmosaur Neck Length, With Comments On The Taxonomic Utility Of Neck Length Variables, F. Robin O’Keefe, Norton Hiller
F. Robin O’Keefe
Elasmosaur cervical vertebrae are common fossils, but their taxonomic utility is limited due to a lack of understanding concerning their shape within and among taxa. In this paper, we analyze data from complete elasmosaur necks in an attempt to quantify and understand the variation in centrum dimensions. In accord with previous studies, variation in cervical centrum shape is found to stem from at least three sources: ontogeny, intracolumn variation, and intercolumn or taxonomic variation. Ontogenetic variability seems reminiscent of that seen in Cryptoclidus, with an overall positive allometry in the length of all centra that is accentuated in the mid-cervical …
Fisheries Management In M. P. Reservoirs Including Enclosure Culture, M K. Bandhyopadhyay, Aparna Roy, Ganesh Chandra
Fisheries Management In M. P. Reservoirs Including Enclosure Culture, M K. Bandhyopadhyay, Aparna Roy, Ganesh Chandra
Ganesh Chandra
No abstract provided.
Economic Impact Of Double-Crested Cormorant, Phalacrocorax Auritus, Depredation On Channel Catfish, Ictalurus Punctatus,Aquaculture In Mississippi, Usa, Brian S. Dorr, Loren W. Burger, Scott C. Barras, Kristina Casscles Godwin
Economic Impact Of Double-Crested Cormorant, Phalacrocorax Auritus, Depredation On Channel Catfish, Ictalurus Punctatus,Aquaculture In Mississippi, Usa, Brian S. Dorr, Loren W. Burger, Scott C. Barras, Kristina Casscles Godwin
Brian S Dorr
The Yazoo River Basin of Mississippi, USA, supports the largest concentration of hectares devoted to channel catfish, Ictalurus punctatus, aquaculture production in North America. The Yazoo Basin also supports large numbers of resident, wintering and migrating fish-eating birds, with the Double-crested Cormorant, Phalacrocorax auritus, implicated as the most serious depredating species. We used data from aerial surveys of numbers and distribution of cormorants in the Yazoo Basin and on commercial catfish ponds during winters (November–April) 2000–2001 and 2003–2004 to refine estimates of regional economic losses due to cormorant depredation. In both periods, the greatest monthly estimates of cormorant foraging occurred …
Twin-Screw Extrusion Processing Of Distillers Dried Grains With Solubles (Ddgs)-Based Yellow Perch (Perca Flavescens) Feeds, Ferouz Y. Ayadi, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan, Michael L. Brown
Twin-Screw Extrusion Processing Of Distillers Dried Grains With Solubles (Ddgs)-Based Yellow Perch (Perca Flavescens) Feeds, Ferouz Y. Ayadi, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan, Michael L. Brown
Kurt A. Rosentrater
Increases in global aquaculture production, compounded with limited availabilities of fish meal for fish feed, has created the need for alternative protein sources. Twin-screw extrusion studies were performed to investigate the production of nutritionally balanced feeds for juvenile yellow perch (Perca flavescens). Five isocaloric (~3.06 kcal/g) ingredient blends, adjusted to a target protein content of 36.7% db, were formulated with 0%, 10%, 20%, 30%, and 40% distillers dried grains with solubles (DDGS) at an initial moisture content of 5–7% db, with appropriate amounts of fish meal, fish oil, whole wheat flour, corn gluten meal, and vitamin and mineral premixes. During …
A Cluster-Based Approach For Biological Hypothesis Testing And Its Application, Ahmed Mustafa
A Cluster-Based Approach For Biological Hypothesis Testing And Its Application, Ahmed Mustafa
Ahmed Mustafa Dr.
No abstract provided.
Project Limulus: Understanding And Conserving A Critical Natural Resource, Jennifer H. Mattei
Project Limulus: Understanding And Conserving A Critical Natural Resource, Jennifer H. Mattei
Jennifer Mattei
Mattei, fellow SHU associate professor of Biology, Dr. Mark Beekey, and many other devoted biologists and conservationists are deeply committed to studying and preserving Limulus polyphemus – the American horseshoe crab. A concerted effort is now under way to locate, count and tag horseshoe crabs – whose numbers have declined since the early 1990s. The crabs are considered to be both a dominant and a “keystone” species of the intertidal zone. Their greatest value to humankind is that the blood of Limulus has an amazing property: It contains unique blood cells (amebocytes) that are used to test human vaccines for …
Communication Sources Used By Fish Farmers And Field Extension Functionaries In Floodplain Wetland Fisheries Of Assam : A Comparative Study, Ganesh Chandra
Communication Sources Used By Fish Farmers And Field Extension Functionaries In Floodplain Wetland Fisheries Of Assam : A Comparative Study, Ganesh Chandra
Ganesh Chandra
A study was carried out in 106 floodplain wetlands of Assam with the objective of ascertaining the preference of communication media use by the fishers of floodplain wetlands and extent of their use by field extension functionaries. Two categories of respondents namely 106 lessee fishermen and 30 officials lower level field extension functionaries constituted the sample of the study. The findings revealed that the interpersonal communication sources like consultation with FEO/ Beel manager was the most important sources for obtaining information by fishers. Demonstration and consultation with progressive farmers were assigned second and third rank. Field extension functionaries preferred group …
Report On Sanitary Shoreline Survey Within The Tanbi Wetlands National Park And Other Shellfish Harvesting Communities, The Gambia
Michael A Rice
Emphasis is placed on the sanitary control of shellfish because of the direct relationship between pollution of shellfish growing areas and the transmission of diseases to humans. Shellfish borne infectious diseases are generally transmitted via a fecal - oral route. To accurately assess waters for shellfish harvesting, an evaluation of the pollution sources that are likely to affect the area is required by the NSSP. The shoreline survey is conducted of the shellfish growing area shoreline and estuary to locate pollution sources that could have an effect on the water quality of the area. The shoreline survey team visited 15 …
Teaching Stress Physiology Using Zebrafish (Danio Rerio), Michael Cooper, Shree Dhawale, Ahmed Mustafa
Teaching Stress Physiology Using Zebrafish (Danio Rerio), Michael Cooper, Shree Dhawale, Ahmed Mustafa
Ahmed Mustafa Dr.
A straightforward and inexpensive laboratory experiment is presented that investigates the physiological stress response of zebrafish after a 5 °C increase in water temperature. This experiment is designed for an undergraduate physiology lab and allows students to learn the scientific method and relevant laboratory techniques without causing significant stress to animals. An additional experimental design and a set of additional questions for lab report are also included.
Effects Of Pre-Treatments And Drying Temperatures On The Drying Rate And Qualityof African Catfish (Claris Gariepinus), Michael Ayodele Omodara, Adesoji Matthew Olaniyan
Effects Of Pre-Treatments And Drying Temperatures On The Drying Rate And Qualityof African Catfish (Claris Gariepinus), Michael Ayodele Omodara, Adesoji Matthew Olaniyan
Michael Ayodele Omodara
Effects of pre-treatments and drying temperatures on the drying rate and the quality of African Catfish Clarias gariepinus was examined by drying samples of catfish under four different temperatures (40 0C, 45 0C, 50 0C and 55 0C) and four different pre-treatment methods (Salting, Sugaring, Blanching, and Control) using an experimental dryer. Drying of the fish samples for all the pre-treatments at 40 0C to 55 0C occurred in the falling rate period only showing that the predominant mechanism of mass transfer in drying process of catfish is that of internal mass transfer. The drying rate increases with increase in …
Double-Crested Cormorant Distribution On Catfish Aquaculture In The Yazoo River Basin Of Mississippi, Brian S. Dorr, Loren W. Burger, Scott C. Barras, Kristina Casscles Godwin
Double-Crested Cormorant Distribution On Catfish Aquaculture In The Yazoo River Basin Of Mississippi, Brian S. Dorr, Loren W. Burger, Scott C. Barras, Kristina Casscles Godwin
Brian S Dorr
No abstract provided.
Using Gis Mapping Of The Extent Of Nearshore Rocky Reefs To Estimate The Abundance And Reproductive Output Of Important Fishery Species, Jeremy T. Claisse, Daniel J. Pondella Ii, Jonathan P. Williams, James Sadd
Using Gis Mapping Of The Extent Of Nearshore Rocky Reefs To Estimate The Abundance And Reproductive Output Of Important Fishery Species, Jeremy T. Claisse, Daniel J. Pondella Ii, Jonathan P. Williams, James Sadd
Daniel Pondella
Kelp Bass (Paralabrax clathratus) and California Sheephead (Semicossyphus pulcher) are economically and ecologically valuable rocky reef fishes in southern California, making them likely indicator species for evaluating resource management actions. Multiple spatial datasets, aerial and satellite photography, underwater observations and expert judgment were used to produce a comprehensive map of nearshore natural rocky reef habitat for the Santa Monica Bay region (California, USA). It was then used to examine the relative contribution of individual reefs to a regional estimate of abundance and reproductive potential of the focal species. For the reefs surveyed for fishes (i.e. 18 …
Drying Of African Catfish (Clarias Gariepinus); Effects Of Some Drying Parameters On The Drying Rate And Quality Of African Catfish., Michael Ayodele Omodara, Adesoji Matthew Olaniyan, Shuaeeb Niyi Oyewole
Drying Of African Catfish (Clarias Gariepinus); Effects Of Some Drying Parameters On The Drying Rate And Quality Of African Catfish., Michael Ayodele Omodara, Adesoji Matthew Olaniyan, Shuaeeb Niyi Oyewole
Michael Ayodele Omodara
No abstract provided.
Efficacy, Effort, And Cost Comparisons Of Trapping And Acetaminophen-Baiting For Control Of Brown Treesnakes On Guam, Larry Clark, Peter J. Savarie, John A. Shivik, Stewart W. Breck, Brian S. Dorr
Efficacy, Effort, And Cost Comparisons Of Trapping And Acetaminophen-Baiting For Control Of Brown Treesnakes On Guam, Larry Clark, Peter J. Savarie, John A. Shivik, Stewart W. Breck, Brian S. Dorr
Brian S Dorr
Abstract: Brown treesnakes (Boiga irregularis) are an invasive species to the island of Guam. Because they have extirpated the native forest avifauna on Guam and are a threat to other Pacific islands, the development of efficient and cost-effective methods to control them is desired. We compared the efficacy, cost, and effort required to remove brown treesnakes on 6-ha plots in forest scrub on Guam, using 2 methods: trapping and poison baiting. Toxic baits consisted of dead neonatal mice adulterated with 80-mg acetaminophen. To assess efficacy, we used mark-recapture methods to estimate snake abundance on plots 12 days before and 12 …
The Direction Of Research And Management Of Double-Crested Cormorants Heading Into The 2000s: Symposium Overview And Future Information Needs, Brian S. Dorr, Christopher Somers
The Direction Of Research And Management Of Double-Crested Cormorants Heading Into The 2000s: Symposium Overview And Future Information Needs, Brian S. Dorr, Christopher Somers
Brian S Dorr
Abstract.—An overview is provided of a symposium on the direction of research and management of Double-crested Cormorants (Phalacrocorax auritus) heading into the 2000s. The current symposium built on previous efforts and described a number of focus areas of informational need, including cormorant impacts on natural resources, demographics of cormorants, assessment of control efforts, assessment of fish consumption and bioenergetics, and cormorant spatial ecology and influences on movements. The cormorant symposium highlighted a shift in research focus relative to earlier symposia, from evaluating potential impacts on commercial and natural resources to evaluating management actions in attaining desired goals. In addition, the …
Modification Of Net Configurations Of The Coda Netlauncher© To Enhance Bird Capture, Amanda M. Prisock, Brian S. Dorr, James C. Cumbee
Modification Of Net Configurations Of The Coda Netlauncher© To Enhance Bird Capture, Amanda M. Prisock, Brian S. Dorr, James C. Cumbee
Brian S Dorr
Abstract: We modified and evaluated capture nets fi red from the Coda Netlauncher® as a tool for capturing various avian species. We modified the netlauncher by using customized nets to maximize the area of the capture zone. We captured 137 birds, comprising 12 species, in 23 attempts between July 2008 and October 2009 using this method. Capture success rates varied from 25 to 69% were comparable to success rates reported for other capture methods for these species. However, individual capture success for different net configurations varied greatly from 3 to 65%. Minimal injuries and 2 bird fatalities were reported. The …
Management Of Double-Crested Cormorants To Improve Sport Fisheries In Michigan: Three Case Studies, Brian S. Dorr, Shauna L. Hanisch, Peter H. Butchko, David G. Fielder
Management Of Double-Crested Cormorants To Improve Sport Fisheries In Michigan: Three Case Studies, Brian S. Dorr, Shauna L. Hanisch, Peter H. Butchko, David G. Fielder
Brian S Dorr
No abstract provided.
Towards Optimized Population Control Efficiency In Space And Time: A Modelling Framework Adapted To A Colonial Waterbird, Alban Guillaumet, Brian S. Dorr, Guiming Wang
Towards Optimized Population Control Efficiency In Space And Time: A Modelling Framework Adapted To A Colonial Waterbird, Alban Guillaumet, Brian S. Dorr, Guiming Wang
Brian S Dorr
The double-crested cormorant is a native North American waterbird that recently underwent a dramatic population expansion. Population control efforts in the USA and Canada attempt to mitigate cormorant damages to natural resources and aquaculture. However, there is currently no coordination among the various stakeholders involved in management activities as well as no attempt to optimize population control efficiency. In this paper, we present for the first time a spatially explicit stage-structured metapopulation model parameterized for the cormorant. We developed simulation tools to get insights into the efficiency gain that can be expected from a better planning of management activities in …