Status of <em>Penaeus indicus</em> (H. milne edwards) stocks from Negombo and Chilaw, Sri Lanka
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Redescription and taxonomic status of Paguristes weddellii (H. Milne Edwards) (Crustacea: Anomura: Paguroidea: Diogenidae) from the eastern Pacific.
The type and additional material of Paguristes weddellii (H. Milne Edwards, 1848) were examined. The species is redescribed and illustrated in details. Comparison of P. weddellii with the monotypic genus Tetralobistes Ayón-Parente & Hendrickx, 2010b, shows many similarities, principally in the armature of the distal margin of the male first pleopod and the shape of the telson, which in both cas...
متن کاملEmbryology of the spider crabs Leurocyclus tuberculosus (H. Milne-Edwards & Lucas 1842) and Libinia spinosa (H. Milne-Edwards 1834) (Brachyura, Majoidea).
The embryonic development of the spider crabs Leurocyclus tuberculosus and Libinia spinosa was divided into five periods based on the differentiation of: (I) cleavage, (II) embryonic primordium, III) optic lobes, (IV) optic lobes pigmented and (V) chromatophores presence. Different traits such as spines, setae and telson morphology distinguish the two species from period III until hatching. Egg...
متن کاملTwo New Species of Parathelphusa H. Milne Edwards, 1853, from the Philippines (crustacea: Decapoda: Brachyura: Parathelphusidae)
– Two new species of freshwater crabs in the genus Parathelphusa H. Milne Edwards, 1853, are described from Palawan Island in the Philippines. The new species are each easily distinguished from their closest congeners by characters of the male first pleopod, in conjunction with a unique combination of other morphological characters. A key to the Parathelphusa species of the Philippines is provi...
متن کاملLong term coastal erosion and shoreline positions of Sri Lanka
Coastal zone of Sri Lanka is a key to sustainable development of the country. The erosion of country’s coastal zone has been identified as a long standing problem. Therefore, coastal sediment dynamics around the country has to be identified to develop an appropriate coastal zone management plan. Remote sensing and GIS techniques can be used for quantitative and qualitative analyses of coastal p...
متن کاملSri Lanka
Sri Lanka is a country with an approximate area of 66 thousand square kilometers (UNO, 2008). The population is 20,409,946 and the sex ratio (men per hundred women) is 98 (UNO, 2009). The proportion of the population under the age of 18 years is 28% and the proportion above age 60 is 8% (UNO, 2009). The literacy rate is 97% for men and 99% for women (UN Statistics, 2008). The life expectancy at...
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ژورنال
عنوان ژورنال: Journal of the National Science Foundation of Sri Lanka
سال: 1990
ISSN: 2362-0161,1391-4588
DOI: 10.4038/jnsfsr.v18i2.8201