Inbreeding depression under mixed outcrossing, self
... parents have purged a fraction of their deleterious mutations, the mean fitness of individuals produced by sibmating is then higher when their parents are selfed vs. outcrossed. The difference is particularly large under a high genomic mutation rate to lethals (U = 1, Fig. 4c) at selfing rates near ...
... parents have purged a fraction of their deleterious mutations, the mean fitness of individuals produced by sibmating is then higher when their parents are selfed vs. outcrossed. The difference is particularly large under a high genomic mutation rate to lethals (U = 1, Fig. 4c) at selfing rates near ...
Anchovy ( Engraulis encrasicolus ) egg density
... more than 50 eggs were introduced in the column. The number of settled eggs were counted every 10 mm interval. The precision measure of individual egg density was thus 0.1 sigma-t. Four ...
... more than 50 eggs were introduced in the column. The number of settled eggs were counted every 10 mm interval. The precision measure of individual egg density was thus 0.1 sigma-t. Four ...
SCRS/2014/176
... oceanographic conditions suggest the conditions may be favorable during spring. Historically, adult bluefin have been found along this frontal system out to 65° W. Figure 5 shows historical catches in the region plotted over a surface temperature climatology. Bluefin are present over a broad geograp ...
... oceanographic conditions suggest the conditions may be favorable during spring. Historically, adult bluefin have been found along this frontal system out to 65° W. Figure 5 shows historical catches in the region plotted over a surface temperature climatology. Bluefin are present over a broad geograp ...
Distribution and Feeding Ecology of Bathylagus euryops (Teleostei: Microstomatidae) Along the Northern Mid-Atlantic Ridge From Iceland to the Azores
... al., 2010). Topographic features such as seamounts and mid-ocean ridges can support commercially valuable species because these features modify the physical and biological dynamics in ways that enhance and retain food availability (Genin and Dower, 2007). Some species form dense breeding aggregation ...
... al., 2010). Topographic features such as seamounts and mid-ocean ridges can support commercially valuable species because these features modify the physical and biological dynamics in ways that enhance and retain food availability (Genin and Dower, 2007). Some species form dense breeding aggregation ...
wgfast12
... meso and submeso scales is increasingly suspected to play a fundamental role in the functioning of marine ecosystems. The method allows for the resolution of a large range of meso and submesoscale structures such as eddies, filaments and internal waves. This information is used to estimate the habit ...
... meso and submeso scales is increasingly suspected to play a fundamental role in the functioning of marine ecosystems. The method allows for the resolution of a large range of meso and submesoscale structures such as eddies, filaments and internal waves. This information is used to estimate the habit ...
Why the world needs a on high-seas bottom trawling
... (HSBT) is a relatively new industry, having begun in the 1950s when an increasing number ...
... (HSBT) is a relatively new industry, having begun in the 1950s when an increasing number ...
Marine Ecology Progress Series 501:53
... (Hsin et al. 2011). The complex interaction between different marine water masses and freshwater discharges can produce multiple-sources of organic materials to be incorporated into the deep-sea food web system. Extensive studies have focused on hydrological and geochemical characteristics of the SC ...
... (Hsin et al. 2011). The complex interaction between different marine water masses and freshwater discharges can produce multiple-sources of organic materials to be incorporated into the deep-sea food web system. Extensive studies have focused on hydrological and geochemical characteristics of the SC ...
Murugan and Durgekar - Fishing Down Marine Food Webs
... when compared to bycatch. But when considering group-wise composition, it is found that target fishery consists of only three groups but bycatch fishery consists of around 19 groups. This indicates that a large amount of accidental/incidental catch occurs along with the target group fishing activiti ...
... when compared to bycatch. But when considering group-wise composition, it is found that target fishery consists of only three groups but bycatch fishery consists of around 19 groups. This indicates that a large amount of accidental/incidental catch occurs along with the target group fishing activiti ...
Latitudinal shifts in coral reef fishes: why some species do and
... et al. 2011), tropical fish species may be particularly sensitive to increasing temperatures as they exist in a relatively thermostable environment (Hoegh-Guldberg et al. 2007). Most tropical fishes may not live within environments that are close to their lethal thermal limits (Mora and Ospına 2001 ...
... et al. 2011), tropical fish species may be particularly sensitive to increasing temperatures as they exist in a relatively thermostable environment (Hoegh-Guldberg et al. 2007). Most tropical fishes may not live within environments that are close to their lethal thermal limits (Mora and Ospına 2001 ...
Longhurst, A. and D. Pauly. 1987. Ecology of Tropical Oceans
... rings on their hard parts, such rings are now known to occur in scales, otoliths, and vertebrae of tropical fish under far too wide a wide range of conditions to be dismissed as exceptions that prove the rule. Another related myth states that spawning in the tropics is continuous, and therefore anal ...
... rings on their hard parts, such rings are now known to occur in scales, otoliths, and vertebrae of tropical fish under far too wide a wide range of conditions to be dismissed as exceptions that prove the rule. Another related myth states that spawning in the tropics is continuous, and therefore anal ...
Horseshoe Crab Habitat Factsheet - Atlantic States Marine Fisheries
... Nearshore, shallow water intertidal flats are important habitats for juvenile development. Beach areas that provide spawning habitat are important areas for adult horseshoe crabs. The spawning beaches within Delaware Bay are critical because they support the highest density of spawning horseshoe cra ...
... Nearshore, shallow water intertidal flats are important habitats for juvenile development. Beach areas that provide spawning habitat are important areas for adult horseshoe crabs. The spawning beaches within Delaware Bay are critical because they support the highest density of spawning horseshoe cra ...
South Coast Biodiversity Monitoring II-Final
... respectively. A total of one hundred and thirty seven (137) fish species belonging to 30 genera were observed in 2013 as opposed to 247 species from 29 genera in 2014 and 3 unidentified species also observed. Generally fish abundance in individual reef sites did not differ significantly between year ...
... respectively. A total of one hundred and thirty seven (137) fish species belonging to 30 genera were observed in 2013 as opposed to 247 species from 29 genera in 2014 and 3 unidentified species also observed. Generally fish abundance in individual reef sites did not differ significantly between year ...
Eulachon of the Pacific Northwest
... grasses, provide shelter from predators and opportunities to forage for food. Eulachon typically enter their juvenile stage of life (8 weeks to 12 months) in this estuarine environment. At this stage they resemble adult fish more than the larval appearance they had when they hatched. They also devel ...
... grasses, provide shelter from predators and opportunities to forage for food. Eulachon typically enter their juvenile stage of life (8 weeks to 12 months) in this estuarine environment. At this stage they resemble adult fish more than the larval appearance they had when they hatched. They also devel ...
Oceanic processes and the recruitment of tropical fish at Rottnest
... The change from one category to the next was somewhat subjective. The estimates for the Standard Length (SL, which does not include the tail) and the Total Length TL (including the tail) were based on measurements of a selection of the sampled fish. As Abudefduf sexfasciatus and A. vaigiensis have s ...
... The change from one category to the next was somewhat subjective. The estimates for the Standard Length (SL, which does not include the tail) and the Total Length TL (including the tail) were based on measurements of a selection of the sampled fish. As Abudefduf sexfasciatus and A. vaigiensis have s ...
Ecological Assessment of the HMCS Yukon Artificial Reef off
... The Yukon provides fish habitat that is a combination of deeper kelp-forest and canyonrim habitat in southern California. The fouling community on the Yukon is also still developing. There are presently abundant populations of the anenomes Metridium spp. and Corynactis californica over much of the s ...
... The Yukon provides fish habitat that is a combination of deeper kelp-forest and canyonrim habitat in southern California. The fouling community on the Yukon is also still developing. There are presently abundant populations of the anenomes Metridium spp. and Corynactis californica over much of the s ...
Hawaiian Monk Seals and Toxoplasma gondii
... by consuming egg-contaminated prey. T. gondii eggs shed in cat feces can survive in soil and seawater for months and have been shown to accumulate in filter-feeding invertebrates that live along the sea floor where monk seals also often feed. Thus, Hawaiian monk seals have the potential to ingest eg ...
... by consuming egg-contaminated prey. T. gondii eggs shed in cat feces can survive in soil and seawater for months and have been shown to accumulate in filter-feeding invertebrates that live along the sea floor where monk seals also often feed. Thus, Hawaiian monk seals have the potential to ingest eg ...
Summary and Conclusion
... zooplankton. Among the copepods, harpacticoid copepod Macrosetella gracilis forms the dominant one. Adults and larvae of this species were found attached to the Trichodesmium filaments. Among fish eggs and larvae in the zooplankton samples, eggs were more abundant than larvae. Presence of fish eggs ...
... zooplankton. Among the copepods, harpacticoid copepod Macrosetella gracilis forms the dominant one. Adults and larvae of this species were found attached to the Trichodesmium filaments. Among fish eggs and larvae in the zooplankton samples, eggs were more abundant than larvae. Presence of fish eggs ...
CCAMLR Science, 2
... E. carlsbergi carried out during different seasons s:howed that in the winter and spring periods feeding intensity is only half to one-third of the summer levels (Kozlov and Shust, 1991). Allowing for the possibility that the preliminary studies have overestimated zooplankton c~onsumptionby E. carls ...
... E. carlsbergi carried out during different seasons s:howed that in the winter and spring periods feeding intensity is only half to one-third of the summer levels (Kozlov and Shust, 1991). Allowing for the possibility that the preliminary studies have overestimated zooplankton c~onsumptionby E. carls ...
The “marine heat wave” off Western Australia during the summer of
... contractions in species distributions, variations in recruitment and growth-rates, impacts on trophic relationships and community structure, and variations in catch rates of exploited species. * As such, the elevated water temperatures were viewed as resulting either in mortality or in a variety of ...
... contractions in species distributions, variations in recruitment and growth-rates, impacts on trophic relationships and community structure, and variations in catch rates of exploited species. * As such, the elevated water temperatures were viewed as resulting either in mortality or in a variety of ...
A Review of the Major Marine Environmental Concerns Off the
... Scotia, -500 kID on the Grand Banks, then narrows to less than 200 kID along the Labrador coast. The bathymetry of the region is highly complex. The water depths range between 75 and 250 m on the shelf and extend to over 300 m in the Laurentian and Fundian Channels and in the Labrador Marginal troug ...
... Scotia, -500 kID on the Grand Banks, then narrows to less than 200 kID along the Labrador coast. The bathymetry of the region is highly complex. The water depths range between 75 and 250 m on the shelf and extend to over 300 m in the Laurentian and Fundian Channels and in the Labrador Marginal troug ...
Radionuclides in deep-sea fish and other
... measured in commercial fish species such as cod, halibut, redfish, and shark from several fishing grounds in the North Atlantic, as well as the anthropogenic radionuclides caesium-137 (137Cs) and plutonium isotopes (238Pu and 239+240Pu). The concentrations of naturally occurring radionuclides were comp ...
... measured in commercial fish species such as cod, halibut, redfish, and shark from several fishing grounds in the North Atlantic, as well as the anthropogenic radionuclides caesium-137 (137Cs) and plutonium isotopes (238Pu and 239+240Pu). The concentrations of naturally occurring radionuclides were comp ...
Risky Decisions - The Pew Charitable Trusts
... restricted the number of days that fishing vessels could operate.5 With no direct limits on the total catch and a fleet with increasingly sophisticated technology, fisheries boomed and landings—the total number of fish brought to shore—increased. But the council had failed to heed the warning that r ...
... restricted the number of days that fishing vessels could operate.5 With no direct limits on the total catch and a fleet with increasingly sophisticated technology, fisheries boomed and landings—the total number of fish brought to shore—increased. But the council had failed to heed the warning that r ...
Loggerhead Turtle - UWI St. Augustine
... consequence of this, the sea turtle’s eating preference varies by its location in its vast range as it not only consumes that which is in high concentration facilitating easy meals but, the preference to eat is temperature dependent. REPRODUCTIVE BEHAVIOUR. Like many sea turtles, the loggerhead turt ...
... consequence of this, the sea turtle’s eating preference varies by its location in its vast range as it not only consumes that which is in high concentration facilitating easy meals but, the preference to eat is temperature dependent. REPRODUCTIVE BEHAVIOUR. Like many sea turtles, the loggerhead turt ...
Environmental issues of fish farming in offshore
... Water column and fisheries in shelf areas Due to low nutrient concentrations, water quality is beneficial for farming at offshore sites compared with coastal areas, reducing the risk of phytoplankton blooms, including those of toxic species (Pelegri et al. 2006). However, some shelf locations (upwel ...
... Water column and fisheries in shelf areas Due to low nutrient concentrations, water quality is beneficial for farming at offshore sites compared with coastal areas, reducing the risk of phytoplankton blooms, including those of toxic species (Pelegri et al. 2006). However, some shelf locations (upwel ...
Identification of Reef Fish Spawning Aggregation Sites in Los
... ing. Possible management measures include seasonal fishing closures at known reproductive sites, prohibitions on the sale of relevant species during their peak reproductive periods, and inclusion of spawning aggregation sites in larger, permanent no-take marine reserves (Heyman et al. 2004a). While ...
... ing. Possible management measures include seasonal fishing closures at known reproductive sites, prohibitions on the sale of relevant species during their peak reproductive periods, and inclusion of spawning aggregation sites in larger, permanent no-take marine reserves (Heyman et al. 2004a). While ...
Fish reproduction
Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally fused. There may also be a range of secondary organs that increase reproductive fitness. The genital papilla is a small, fleshy tube behind the anus in some fishes, from which the sperm or eggs are released; the sex of a fish often can be determined by the shape of its papilla.