Description of a new species from Australia, belonging to the subgenus Selenkothuria (Holothuria, Aspidochirotida). A dichotomous key of the thirteen valid species included in the subgenus is also given. The species H. perrieri Thandar, 1977 and H. spinea Cherbonnier, 1988 are considered as non valid.

Grynocharis quadrilineata (Melsheimer) and Tenebroides corticalis (Melsheimer) of the family Trogossitidae are newly recorded for New Brunswick, Canada. Additional records of the recently reported Calitys scabra (Thunberg)and Ostoma fraterna (Randall) are presented for the province. The record of Ostoma fraterna is the first recent record of this species from New Brunswick. Additional New Bruns...

1. Stress-relaxation tests and creep tests were performed on the bodywall dermis of two sea cucumbers, Actinopyga echinites (Jager) and Holothuria leucospilota Brandt. 2. These viscoelastic connective tissues had mechanical properties which agreed well with those of a four-element mechanical model composed of two Maxwell elements connected in parallel. 3. The elastic stiffness of the dermis of ...

More than 100 triterpene glycosides (saponins) have been characterized in holothuroids in the past several decades. In particular, Holothuria forskali contains 26 saponins in its Cuvierian tubules and 12 in its body wall. This high diversity could be linked to a chemical defense mechanism, the most commonly accepted biological role for these secondary metabolites. We performed an integrated stu...

The present study aimed to evaluate the effects of endogenous compared commercial probiotics on growth, digestive enzyme activity, and non-specific immunity sandfish juveniles. Treatments were: A. diet without probiotic; B. supplemented with Gamma proteobacterium strain M-4, Bacillus subtilis Q-1, sp. E-2; C. a probiotic containing subtilis, licheniformis, pumilus. research was conducted for 4 ...

Plant tolerance of heat stress involves various changes at physiological and molecular levels. The objective of this study was to examine the expression of a gene encoding expansin protein in relation to heat tolerance in two C(3) grass species and genotypes differing in heat tolerance. Heat-tolerant, thermal Agrostis scabra, adapted to high temperatures in geothermal areas in Yellowstone Natio...

The glycan moiety of ganglioside HPG-7, isolated from the sea cucumber (Holothuria pervicax), was synthesized for the first time. The characteristic substructure, a trisialic acid sequence embedded in the glycan, was deliberately constructed by utilizing suitably differentiated sialyl units for various synthetic purposes. Finally, a pentasaccharide was successfully delivered as the hexyl glycos...

Since the introduction of Stylosanthes, a range legume, in India in early seventies extensive efforts have been made for its evaluation and adaptation. However limited germplasm and narrow genetic base were major impediments in its wider adaptations. Of late, introduction of several new improved germplasm including newly identified species, cultivars and bred materials from Australia, Colombia,...

The experiment recorded in this note was undertaken in 1917, with a view to testing the notion (Crozier, 1914-15) that the fluorescent, greenish yellow, integumentary pigment characteristic of some members of the genus ttolothuria is concerned with their photic sensitivity. A functional connection of this sort was suspected because the presence and relative amount of the pigment seemed to be co...