Biodiversitas 

About: Biodiversitas is an academic journal. The journal publishes majorly in the area(s): Population & Species richness. It has an ISSN identifier of 1412-033X. It is also open access. Over the lifetime, 2798 publication(s) have been published receiving 10712 citation(s).

REVIEW: Current Status of Extenders and Cryoprotectants onFish Spermatozoa Cryopreservation

Abstract: An important component of many studies of cryopreservation of fish spermatozoa is the type of extenders and cryoprotectants. The suitability of extenders and cryoprotectants differs from one fish to another. There are many studies have been done in cryopreservation of fish spermatozoa. However, there are few review have been done. This review reveals some aspects of cryopreservation especially the role of extender and cryoprotectant in fish sperm cryopreservation. Fish produce high viscosity of sperm and in some cases only small volume is produced. Before cryopreserved in liquid nitrogen, sperm have to dilute with extenders and for long-term cryopreservation,cryoprotectants are needed to protect the sperm cell from cold and hot shock treatments and prevent cell dehydration during pre-freezing, freezing and post thawed. The suitability of extenders and cryoprotectants differs from one fish to another. Over the last decade, studies on the cryopreservation of mammalian sperm, animal husbandry sperm and human sperm have progressed significantly but studies on fish sperm is still confined to some aquatic.© 2005 Jurusan Biologi FMIPA UNS SurakartaKey words: fish, sperm, cryopreservation, extenders, cryoprotectants

Local knowledge of medicinal plants in sub-ethnic Batak Simalungun of North Sumatra, Indonesia

Abstract: Silalahi M, Supriatna J, Walujo EB, Nisyawati. 2015. Local knowledge of medicinal plants in sub-ethnic Batak Simalungun of North Sumatra, Indonesia. Biodiversitas 16: 44-54. Research on the local knowledge of medicinal plants by sub-ethnic Batak Simalungun of North Sumatra was conducted, using an ethnobotanical approach. The sample consisted of 8 key informants and 32 general respondents, who were grouped into two, namely those who were 30-50 years old and >50 years old. Data were analyzed both qualitatively by descriptive statistics and quantitatively by calculating the index of cultural significance (ICS) and the use value (UVs).It was found that 239 species (170 genera, 70 families) of medicinal plants were used to cure 18 kinds ofnatural diseases and 2 kinds of supra natural diseases. Almost half of those plants (119 species) had leaves used as medicines. Among the diseases, gastrointestinal disorders had the highest number of medicinal plants used (72 species), followed by fever (64 species), and fractures (41 species). It seemd that younger generation had lost their knowledge in the medicinal plants because their knowledge of medicinal plants (48.19 ±8.35 species) was lower than the that of older generation (170.19 ± 18.38 species), while our key informants had the highest knowledge of medicinal plants among respondents (202.00 ± 12.32 species).

Review: genetic diversity of local and exotic cattle and their crossbreeding impact on the quality of Indonesian cattle.

Abstract: Sutarno, Setyawan AD. 2015. Genetic diversity of local and exotic cattle and their crossbreeding impact on the quality of Indonesian cattle. Biodiversita16: 327-354.Several species of cattle had been domesticated around the world, but only two species werefarmed extensively, zebu cattle (Bos indicus) of the tropics and taurine cattle (Bos taurus) of the subtropical areas. Both of them hadhundreds variety of offspring in the worlds. The third species of cattle that most widely farmed was Bali cattle (Bos javanicus), anindigenous cattle from Indonesia that was domesticated from wild banteng (Bos javanicus javanicus). Besides Bali cattle, Indonesia hadalso some local cattle as direct descendants of or as Crossbreeds of those three cattle. These cattle had been adapted to climaticconditions, feeds and diseases in Indonesia. Local zebu cattle that relatively pure were Peranakan Ongole (PO) or Ongole breeds andSumba Ongole (SO). The main Crossbreed between zebu and Bali cattle was Madura cattle. The other well-known cattle of this wereAceh cattle, Pesisir cattle, Rancah cattle, Jabres cattle, Galekan cattle and Rambon cattle. Crossbreeds of taurine and zebu cattlegenerally produced calf that declining reproductive ability in generations. One fairly successful was Grati cattle or Holstein FreisianIndonesia (FHI) which was a crossbreed of Holstein Friesian and PO cattle. In recent decades, there were many crossbreed activitiesthrough artificial insemination between local cattle and taurine cattle to produce excellent beef cattle, mainly Simmental and Limousin.This activity was carried out widely and evenly distributed throughout Indonesia. It was conducted on all local cattle breeds and wasstrongly supported by local farmers. This crossbreeding activity was feared to change the genetic diversity of local Indonesia cattle,where the descendants could not adapt to the climatic conditions, feeds and localized diseases; and the ability of reproduction continuesto decline in generations, there fore the availability of parental cattle should be maintained continuously. This crossbreed had producedsome new breeds, among others Simpo (Simmental x PO), Limpo (Limousin x PO), Simbal (Simmental x Bali cattle), Limbal(Limousin x Bali cattle), and Madrasin or Limad (Limousin x Madura cattle). Male offsprings were sterile, while female offsprings hadlower reproductive capacity than of the parent’s. This lead to uncertainty over the guarantee of meeting the needs of protein (meat andmilk) of Indonesian in the future, thus there was a need of regulation. On the other hand, in the grasslands of North Australia, thebreeder had produced an eminent cattle breeds, namely Australian Commercial Cattle (ACC), from uncontrolled crossbreeds betweendifferent breedsof taurine and zebu cattle in the pasture, therefore this concerns ignored.

Review: Sugarcane production: Impact of climate change and its mitigation

Abstract: Srivastava AK, Rai MK. 2012. Review: Sugarcane production: impact of climate change and its mitigation 13: 214-227. Sugarcane is a climatic sensitive crop: therefore, its spatial distribution on the globe is restricted as per the suitability of various climatic parameters. The climate change, though, a very slow phenomenon is now accelerated due to natural, as well as enormous human activities disturbing the composition of atmosphere. The predications of various climatic models for probable rise in temperature, rainfall, sea level show an alarming condition in forthcoming decades. As the sugarcane is very sensitive to temperature, rainfall, solar radiations etc. therefore, a significant effect on its production and sugar yield is expected in future. It is also well known that sugarcane is one of the precious crops of the world and its end products i.e. sugar and ethanol have a continuous growing demand on global level. Hence, the studies related to good production of sugarcane in changing conditions of climate has become one among the front line area of research and is a major concern of scientist’s world over. Advance agronomic measures including development of suitable cane varieties susceptible to changed climatic conditions, land preparation, time and pattern of plantation, weed, disease and pest managements, nutrients managements, proper timing and adequate water management seems to be the affective measures for obtaining high production of crop with good quality juice in future.

Diversity and abundance of polyisoprenoid composition in coastal plant species from North Sumatra, Indonesia

Abstract: Basyuni M, Wati R, Sagami H, Sumardi, Baba S, Oku H. 2018. Diversity and abundance of polyisoprenoid composition in plant species from North Sumatra, Indonesia. Biodiversitas 19: 1-11. The distribution and abundance of polyprenols (pol) and dolichols (dol) in the leaves and roots of fourteen coastal plants from North Sumatra, Indonesia were analysed using two-dimensional thin layer chromatography. In the leaves, with respect to the distribution of pol and dol were detected and categorized into three-types. In type-I, the predominance of dol over pol, was observed in Barringtonia asiatica, Calophyllum inophyllum, Pandanus odoratissimus, and Stachytarpheta jamaicensis. In type-II, the presence of both pol and dol, was observed in Casuarina equisetifolia, Melastoma candidum, Morinda citrifolia, Scyphiphora hydrophyllacea, Sesuvium portulacastrum and Terminalia catappa. In type-III, the predominance of pol over dol, was observed in Acacia auriculiformis, Hibiscus tiliaceus, Ricinus communis, and Pongamia pinnata. However, in the roots, a type-I distribution was observed in eleven species, while three species, A. auriculiformis, M. candidum, and M. citrifolia, corresponded to a type-II distribution instead of type-III. The diversity of polyisoprenoid composition in the leaves was noted, whereas 79% of root tissues indicated that dol occur more abundantly than pol. The range of the contents of polysioprenoid was 12-300 mg/g dw. The present study indicated that pol and dol could be useful in the classification of mangroves and other coastal forests and in phylogenetic studies. The diversity and presence of polyisoprenoids in coastal plants suggested that plant polyisoprenoids are chemotaxonomically important.