Variation in a Natural Population of Schizophyllum commune

AbstractThe aim of this study was to compare the quality of clutches and reproduction results of two groups of Roman snails (Helix pomatia) from the same local population, laying eggs simultaneously in semi-natural farm conditions and in a natural habitat. The study material were Roman snails aged 2 or more years which had entered the third phenological season of their life and thus the first season of sexual maturity. Observations were conducted at an earthen enclosure in a greenhouse belonging to the experimental farm for edible snails at the National Research Institute of Animal Reproduction in Balice near Kraków (Poland) as well as at a site where a local population naturally occurs in the uncultivated park surrounding the Radziwiłł Palace. In the June-July season, differences among such parameters as weight of clutch, number of eggs in clutch, mean egg weight, and hatchling percentage when compared to the total number of eggs in the clutch were compared. It was determined that clutches of eggs from the natural population laid in the greenhouse were of lesser weight (P<0.01), contained fewer eggs (P<0.05), and the mean weight of individual eggs was less (P<0.05) than in clutches laid simultaneously in a natural habitat. Both in the greenhouse and the natural habitat, in the first phase of laying eggs (June) the weight of the clutch and number of eggs its contained were greater than in the second phase (July). However, only for snails laying eggs in the greenhouse were these differences statistically significant (P<0.05) and highly significant (P<0.01), respectively. Statistically significant differences were not observed in hatchling percentage between eggs laid in the greenhouse and the natural habitat. The lower number of eggs laid in the farmed conditions of the greenhouse was successfully compensated for by the absence of mass destruction by rodents which occurred in the natural habitat.

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Study of the prevalence of GERD subtypes in the natural population with high esophageal cancer incidence of China

10.26226/morressier.57c5383fd462b80296c9c786 ◽

2016 ◽

Author(s):

Kun Wang

Keyword(s):

Esophageal Cancer ◽

Natural Population ◽

Cancer Incidence

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Studi Taksonomi dan Potensi Beberapa Jamur Liar di Pulau Belitong

Justek : Jurnal Sains dan Teknologi ◽

10.31764/justek.v3i1.3534 ◽

2020 ◽

Vol 3 (1) ◽

pp. 24

Author(s):

Ivan Permana Putra

Keyword(s):

Bioactive Compounds ◽

Schizophyllum Commune ◽

Ecological Role ◽

Future Potential

Abstract : Macrofungi or mushroom are cosmopolitan heterotrophic organisms which have a very important ecological role. Information on the presence and description of macrofungi can be used as a reference for conservation steps and future potential utilization. The purpose of this study was to provide description of macro fungi and their potential utilization at Belitong Island. All macro fungi found were Basidiomycota. The identification results showd there were 11 species of mushrooms, i.e. Chlorophyllum molybdites, Lepiota sp., Marasmius sp., Parasola sp., Phallus indusiatus, Lentinus sp.1, Lentinus sp.2, Microporus sp., Polyporus cf. tricholoma, Russula sp., dan Schizophyllum commune. All mushrooms are decomposer at the study site. Some mushrooms have potential as food, medicine and source of other bioactive compounds. This paper explains how to use macroscopic characters to help the identification of macrofungi.Abstrak : Jamur makro merupakan organisme heterotof kosmopolitan yang memiliki peran ekologis yang sangat penting. Informasi mengenai keberadaan dan deskripsi jamur makro dapat dijadikan acuan untuk langkah konservasi serta pemanfaatan potensinya di masa mendatang. Tujuan dari penelitian ini adalah untuk menyediakan deskripsi jamur makro dan potensi pemanfaatannya di Pulau Belitong. Seluruh jamur makro yang ditemukan merupakan Filum Basidiomycota. Hasil identifikasi menunjukan terdapat 11 spesies jamur yaitu Chlorophyllum molybdites, Lepiota sp., Marasmius sp., Parasola sp., Phallus indusiatus, Lentinus sp.1, Lentinus sp.2, Microporus sp., Polyporus cf. tricholoma, Russula sp., dan Schizophyllum commune. Seluruh jamur merupakan dekomposer pada lokasi penelitian. Beberapa jamur berpotensi sebagai bahan pangan, obat, dan sumber senyawa bioaktif lainnya. Pada tulisan ini dijelaskan cara menggunakan karakter makroskopik untuk membantu identifikasi jamur.

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