This study aimed to investigate the community structure and distribution pattern of Gastropods in mangrove ecosystem Bolihutuo village. The was conducted February July 2021 two different stations. Community analysis carried out includes species composition, density, diversity, evenness, dominance, patterns by Morisita dispersion index. results showed that 13 gastropods were found from 8 familie...

Although sea hares are well known for acquiring algal secondary metabolites from their diet, the effects of diet on fitness and the susceptibility of sea hares to predators are poorly understood. We examined the effects of diet on the performance of the sea hare Aplysia parvula, and measured predation by reef fishes on sea hares raised on different seaweeds. Diet-switching, body size, the prese...

The genus Baptista Distant, 1903, is recorded for the first time from China. Four species are treated in this paper, with B. digitata Andersen, 1989 and B. hoedli Zettel, 2004 newly recorded from China and two additional species, B. curvicornis sp. n. and B. obtusa sp. n., described as new to science. Photographs of the male and female dorsal habitus, male fore legs, male abdominal sternites, a...

Three species of obligate subterranean asellids were previously known from Ohio, all assigned to the stygia Group of the genus Caecidotea: C. stygia, C. filicispeluncae, and C. rotunda. Caecidotea insula, n. sp., is described here from two caves on South Bass Island, Ottawa County, Ohio. This island is only 7 km from the Canadian border. The new species is assigned to an assemblage proposed her...

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In the course of our research for biologically active constituents from coniferous plants, a chromone derivative (1) and an abietane derivative (2) were isolated along with several diterpenes from Chamaecyparis pisifera. Structures of the new compounds were determined to be 5,7-dihydroxy-2-(1-acetyl-2-methoxycarbonylethyl)-chromone and rel-(8R,10R,20S)-8,10,20-trihydroxy-9(10-->20)-abeo-abieta-...

Chamaecyparis obtusa (Siebold & Zucc.) Endl. (Cupressaceae) is known to produce a variety of antimicrobial substances. In the present study, components three lots essential oil from C. were analyzed by GCMS. It was confirmed that thujopsene and pinene common markers. addition, we report indoor space disinfectant effects products containing (PO100, PO500, PO1000). PO100 PO500 could effective...

The genus Laurencia(Rhodomelaceae), a complex group, has 285 species and infraspecific names. Identification and taxonomy of these taxa, mainly has been based on flexible morphological characters which have led to a complicated taxonomy in this group. Nowadays, taxonomical study of this group has changed a lot by using reproductive characters, anatomical differences and modern...