667 research outputs found
Food and feeding of Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) (Brachyura: Portunidae) along Karnataka coast
The diet of Portunus (Portunus) sanguinolentus and P.(P.) pelagicus Jmlin1y consisted of crustacean
Fishes, molluscs, large quantity of unidentified matter and debris. Quantitative analysis of the gut contents
revealed that crustaceans contributed to 47.1% and 42.6 %, fish remains 29.0 % and 20.4 %. molluscs
5.7% and 20.0 % detritus 4.9 % and 4.7 % respectively of the gut content by volume in both species
respectively. The study indicated that these crabs are primarily predators of sessile and slow moving benthic macro invertebrates
Length-weight relationship in two marine portunid crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) from the Karnataka coast
Portunus (Portunus) sanguinolentus and P.(P.)
Pelagicus support fishery of considerable value all
along the Indian coast and together contribute up to
96 % of the crab landings. In the context of
increased importance of crab resources and interest
eltinced in culture, there is an urgent need to study
tlie biology and related aspects
Spawning biology of two marine portunid crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) from the Karnataka Coast
Weekly samples of P (P) sallguilloienllls and P (P)
pelagicus caught by di !ferent type of gears were taken from
Mangalore, Malpe and Karwar - three important fish landing
centres in Kamataka during 1992-94 and analysed for carapace
width, weight, sex and maturity conditions. For describing the
gross maturity stages of ovary, the following stages were
recognised. I) immature virgins, 2) immature resting 3) early
maturing, 4) late maturing, 5) mature and 6) spent
The portunid crab Charybdis (charybdis) feriatus - An emerging fishery resource of Mangalore coast
The marine crab fishery by mechanised
trawlers along the Mangalore coast is mainly
supported by those belonging to the genera
Portunus and Charybdis of the family Portunidae
Potential new resources of penaeid prawns of the Mangalore coast
Penaeid prawns belonging to the genera Parapenaeopsis,
Penaeus and Metapenaeus of the
family Penaeidae exploited by mechanised trawlers
support a fishery of considerable magnitude
along the Mangalore coast. Among the penaeid
prawns exploited Metapenaeus dobsoni, M. Monoceros,
M. qffinis, Parapenaeopsis stylifera,
Penaeus indicus and P. monodon are important
and contribute upto 90-99 % of the prawn catch
along this coas
Mean first passage times for bond formation for a Brownian particle in linear shear flow above a wall
Motivated by cell adhesion in hydrodynamic flow, here we study bond formation
between a spherical Brownian particle in linear shear flow carrying receptors
for ligands covering the boundary wall. We derive the appropriate Langevin
equation which includes multiplicative noise due to position-dependent mobility
functions resulting from the Stokes equation. We present a numerical scheme
which allows to simulate it with high accuracy for all model parameters,
including shear rate and three parameters describing receptor geometry
(distance, size and height of the receptor patches). In the case of homogeneous
coating, the mean first passage time problem can be solved exactly. In the case
of position-resolved receptor-ligand binding, we identify different scaling
regimes and discuss their biological relevance.Comment: final version after minor revision
Activities of Daily Living
The activities of daily living (ADLs) is a term used to collectively describe fundamental skills that are required to independently care for oneself such as eating, bathing, and mobility. The term activities of daily living was first coined by Sidney Katz in 1950. ADL is used as an indicator of a personтАЩs functional status. The inability to perform ADLs results in the dependence of other individuals and/or mechanical devices. The inability to accomplish essential activities of daily living may lead to unsafe conditions and poor quality of life. Measurement of an individualтАЩs ADL is important as these are predictors of admission to nursing homes, need for alternative living arrangements, hospitalization and use of paid home care. The outcome of a treatment program can also be assessed by reviewing a patientтАЩs ADLs. Nurses are often the first to note when patients\u27 functionality declines during hospitalization; therefore, routine screening of ADLs is imperative and nursing assessment of ADL\u27s is performed on all hospitalized patients. Hospitalization for an acute or chronic illness may influence a personтАЩs ability to meet personal goals and sustain independent living. Chronic illnesses progress over time, resulting in a physical decline that may lead to a loss of ability to perform ADL\u27s. In 2011, the United States National Health Interview Survey determined that 20.7% of adults aged 85 or older, 7% of those aged 75 to 84 and 3.4% of those aged 65 to 74 needed help with ADLs
Maturation process and reproductive cycle in two marine crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) along the Karnataka coast
In the development of ovary of Portunus (Portunus) sanguinolentus and
P. (P.) pelagicus, six maturity stages have been recognised by gross examination,
i.e., immature virgins, immature resting, early maturing, late
maturing, mature and spent. By microscopical studies, nine arbitrary stages
have been identifed in the maturation process of ovary. In the development
of testis, three maturity stages have been discernible, i. e., immature, maturing
and mature. The spawning season is exended from August to May in both the
species with intensive activity during December-February in the former and
during January-February and September in the latter species
Age and growth in two marine portunid crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) along the southwest coast of India
Age and growth of two marine protunid crabs, Portunus (Portunus)
sanguinolentus and P. (P.) pelagicus was investigated based on the data
collected from the commercial catches landed at Mangalore, Malpe and
Karwar, three major fish landing centres in Karnataka state, along the
southwest coast of India during 1992-'94. The size frequency analysis indicated
that the growth rate was high and more or less uniform in juveniles, while
the adults showed relatively low rate of growth and marked variation in males
and females. In P. (P.) sanguinolentus, the mean monthly growth rates were
10.3 m and 8.8 mm and attained a carapace width of 124.1 and 112.5 mm
by males and females respectively on completion of one year. In P. (P.)
pelagicus, the average growth rates were 11.0 and 9.6 mm and attained a size
of 145.2 and 132.5 mm by males and females respectively, at the end of one
year. The von Bertalanffy's growth parameters, L_, K and to were 195 mm,
0.99 yr1 and -0.0132 yr for males and 188 mm, 0.82 yr1 and -0.0975 yr for
females. In P. (P.) pelagicus, the growth parameters were 211 mm,. 1.14 yr
1 and -0.0194 yr for males and 204 mm, 0.97 yr1 and -0.0691 yr for females
Effects and consequences of small-scale cage culture technology adoption in Kerala
Small-scale fish farming is critical in ensuring food security and employment in many
developing countries. Small-scale cage culture for Etroplus suratensis was introduced in the
state by the Department of Fisheries, Government of Kerala with the same objectives. The
demand for the species has shown considerable increase in the recent years and f m gate
prices are as high as Rs 450kg in the peak season. Elevation to the status of State Fish has also
helped the culture of the species in attracting the attention of policy makers leading to promotion
of its culture. Cage culture in brackishwater bodies, a relatively new technology to the State,
was popularized among the tsunami affected fishermen along with extension and technical
support. The implementation of cage culture was promoted through the Brackishwater Fish
Farmers' Development Agency (BFFDAs) and Agency for Development ofAquaculture Kerala
(ADAK), two subsidiaries of the Department of Fisheries, Government of Kerala. The present
study probes the effects and consequences of cage culture technology adoption among farmers
based on primary data collected from sample respondents during the initial year of culture
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