to identify the species of sea cucumbers belong to holothuroidea in the intertidal zones of chabahar bay, field studies were conducted during one year from november 2008 to september 2009. the area of study was located at the farthest end of southeast of iran in province of sistan and balouchestan between 25°16́́ 61̋ and 25°22́ 47 ̋ north, and between 60°39́ 90 ̋ and 60°24́ 38 ̋ east. 5 sampling station...

Certain traits are selected for during the course of domestication. Evidence of positive selection manifests itself as reduced variation between particular loci in the domesticate relative to its wild progenitor (Volis 2008). I propose to look for evidence of such selective sweeps in the Ethiopian composite crop Guizotia abyssinica relative to its progenitor Guizotia scabra ssp. schimperii usin...

Three malacological surveys were conducted in the Takua Pa District of Phang-Nga Province, southern Thailand, before and after the Indian Ocean Tsunami disaster. Twenty-nine species of fresh- and brackish-water snails were found, in which 10 species of freshwater snails were present, including live Pila polita; 8 species were of medical importance. Two brackish-water snails, Nerita articulata a...

BACKGROUND Species identification of living organisms by standard DNA sequences has been well-accepted. Consortium for the Barcode of Life (CBOL) recommends chloroplast regions rbcL and matK as the DNA barcodes for the land plants. This study aims to evaluate the feasibility and limitations of rbcL, matK, and 5 other commonly used regions as the DNA barcodes for the medicinal Gentiana and their...

In Holothuria polii, the periesophageal ring is an important organ supplying spherule cells after stimulation with foreign material. In animals injected with formalinized sheep erythrocytes, in fact, a depletion of spherule cells is observed in the periesophageal ring, whereas in the connective tissue, in the external epithelium and around the antigen-injected site, small, transparent cells can...

In September 1975, 5031 sea cucumbers (Holothuria atra Jager) were tagged with tetracycline and returned to a gutter on the seaward reef bench of Ananij Island, Enewetak Atoll, Marshall Islands. A sample of 184 individuals was collected in September 1976. Animals were dissected and plates of the calcareous ring were examined with ultraviolet radiation for tetracycline lines. Based on 18 tagged ...