KEANEKARAGAMAN JAMUR MAKROSKOPIS DI KAWASAN AIR TERJUN CURUG EMBUN KOTA LUBUKLINGGAU

This study aims to determine the types, diversity index, species evenness index, dominance index, and relative density of macroscopic fungi in the Waterfall area of ​​Curug Embun, Marga Bakti Village, North Lubuklinggau District I. This research is quantitative descriptive. Data collection techniques in this study using the roaming method with sampling using purposive sampling technique. The results of the analysis of the macroscopic fungal diversity index in the Curug Embun Waterfall area were 1.3530, the species evenness index was 0.4516, the dominance index was 0.4776 and the highest relative density was 68.027%. There are 3 edible species and 17 non-edible mushrooms. 17 species of macroscopic mushrooms in the Waterfall area of ​​Curug Embun were found. The diversity index, dominance, and Simpson index are in the medium category. Schizophyllum commune is the most commonly found species.

Diversity of Predators Associated with the Mealybug Complex in Cassava Growing Districts of Tamil Nadu, India

An extensive survey was carried to study the diversity of predators associated with the mealybug complex in the cassava growing districts viz., Salem, Namakkal, Erode, Tiruppur and Coimbatore of Tamil Nadu, India from January to September, 2021. The survey revealed the dominance of Phenacoccus manihoti Matile-Ferrero 1977 (Hemiptera: Pseudococcidae) than other mealybug species in all the surveyed districts. The incidence of P. manihoti ranged from 12 to 90 per cent while Paracoccus marginatus Williams and Granara de Willink 1992 (Hemiptera: Pseudococcidae) incidence was found to be between 8 and 54 per cent. The incidence of Ferrisia virgata Cockerell 1893 (Hemiptera: Pseudococcidae) was found to be very low (8-16%) compared to other mealybug species. Association of total predators with P. manihoti were found to be maximum (30.87%) followed by the total predators with P. marginatus (6.49%) whereas 0.53 per cent of total predators associated with F. virgata. The fourteen different predators viz., Cryptolaemus montrouzieri Mulsant 1853 (Coleoptera: Coccinellidae), Menocheilus sexmaculatus Fabricius 1781 (Coleoptera: Coccinellidae), Anegleis cardoni Weise 1892 (Coleoptera: Coccinellidae), Hyperaspis maindroni Sicard 1929 (Coleoptera: Coccinellidae), Brumoides suturalis Fabricius 1798 (Coleoptera: Coccinellidae), Scymnus spp. (Coleoptera: Coccinellidae), Chrysoperla spp. (Neuroptera: Chrysopidae), Mallada spp. (Neuroptera: Chrysopidae), Spalgis epeus Westwood 1851 (Lepidoptera: Lycaenidae), Geocoris spp. (Hemiptera: Geocoridae), Cardiastethus spp. (Hemiptera: Anthocoridae), Diadiplosis spp. (Diptera: Cecidomyiidae), Oxyopes spp. (Araneae: Oxyopidae) and Argiope spp. (Araneae: Araneidae) were found to associated with the mealybug species viz.,P. manihoti, P. marginatus and F. virgata. Among the predators of the mealybug complex, the most relative abundant species were H. maindroni (11.74%) associated with P. manihoti and C. montrouzieri (6.49%) associated with P. marginatus followed by S. epeus (0.67%) associated with F. virgata. The diversity of predators assessed through Simpson’s Index of Diversity, Shannon-Wiener, Pielou’s Evenness and Margalef indices revealed highest species diversity, species richness and species evenness in Namakkal district.

The inconsistent microbiota of Budu, the Malaysian fermented anchovy sauce, revealed through 16S amplicon sequencing

Budu is a Malaysian fermented anchovy sauce produced by immersing small fishes into a brine solution for 6 to 18 months. Microbial enzymes are known to contribute to fermentation; however, not much is known about the microbial community in Budu. Therefore, a better understanding of the Budu microbiome is necessary to improve the quality, consistency, and safety of the Budu products. In this study, we collected 60 samples from 20 bottles of Budu produced by seven manufacturers. We analyzed their microbiota using V3–V4 16S rRNA amplicon sequencing when we first opened the bottle (month 0), as well as 3 and 7 months post-opening (months 3 and 7). Tetragenococcus was the dominant genus in many samples, reaching a maximum proportion of 98.62%, but was found in low abundance, or absent, in other samples. When Budu samples were not dominated by a dominant taxa, we observed a wider genera diversity such as Staphylococcus, Acinetobacter, Halanaerobium and Bacillus. While the taxonomic composition was relatively stable across sampling periods, samples from two brands showed a sudden increase in relative abundance of the genus Chromobacterium at month 7. Based on prediction of metagenome functions, non-Tetragenococcus-dominated samples were predicted to have enriched functional pathways related to amino acid metabolism and purine metabolism compared to Tetragenococcus-dominated samples; these two pathways are fundamental to fermentation quality and health attributes of fish sauce. Among the non-Tetragenococcus-dominated samples, contributions towards amino acid metabolism and purine metabolism were biased towards the dominant taxa when species evenness is low, while in samples with higher species evenness, the contributions towards the two pathways were predicted to be evenly distributed between taxa. Our results demonstrated that the utility of 16S sequencing to assess batch variation in fermented food production. The distinct microbiota was shown to correlate with characteristic metagenome function including functions potentially related to fermented food nutrition and quality.

Seedling Diversity Considerably Changes Near Localities in Three Salinity Zones of Sundarbans Mangrove Forest, Bangladesh

The status of natural seedlings near localities in the Sundarbans Mangrove Forest was assessed through a stratified random sampling method to observe seedling composition and diversity, importance value index, family importance value, and species evenness. A total of 63 sample plots of 3,990 m2 area were surveyed in three natural and anthropogenic influenced salinity zones of Sundarbans. A total of 16,166 seedlings of 15 species under 12 families were found. Family Euphorbiaceae showed the highest (59.59%) family relative density and Rhizophoraceae presented the highest (20%) family relative diversity Index (FRDI). The maximum family importance value (FIV) showed by Euphorbiaceae (66.26) and the maximum importance value index (IVI) of species has been observed in Excoecaria agallocha (114.74). Excoecaria agallocha showed the highest relative density (59.6%) and relative abundance (39.87%) where the highest relative frequency (15.27%) was observed by Heritiera fomes. The mean stem density and species diversity index in the whole survey area was 2701 stem ha-1 and 0.0009 correspondingly. The Shannon-Wienner's diversity index was 1.52 where the maximum Shannon-Wienner's diversity index was 2.708. The Simpson's diversity index and Dominance of Simpson index were 0.38 and 0.62 with Simpson's reciprocal index 2.632. The Species evenness index, Menhinick’s, and Margalef's indices were 0.561, 0.118, and 1.445 respectively. The Species diversity index of the three salinity zones were 0.0017, 0.0029, and 0.0035 respectively. The Shannon-Wienner's diversity index of Low Salinity Zone (LSZ), Moderate Salinity Zone (MSZ), and Strong Salinity Zone (SSZ) were 0.887, 1.369, and 1.845 correspondingly where LSZ (0.632) showed the highest Simpson's diversity index follow ed by MSZ (0.394) and SSZ (0.21). The Species evenness index for LSZ, MSZ, and SSZ were 0.346, 0.505, and 0.742 where Menhinick’s Index were 0.148, 0.210, and 0.207 respectively. The analysis showed poor diversity indices and the area was dominated by few species with few families. The status is also reduced with increasing salinity.

Tree Species Composition, Richness and Diversity in the Northern Guinea-Savanna Taraba State, Nigeria

The study investigated tree species composition, diversity and abundance in the Guinea savanna ecosystem, Taraba State, Nigeria. Three transects with a distance of 500 m apart were used for the study. Four sample plots of 25 m x 25 m size were laid in alternate positions along each transect at 250 m intervals. Identification of trees/shrubs was carried out in the forest reserves. Biodiversity indices such as; Shannon-Wiener diversity index, Species evenness, Simpson’s diversity index, Margalef’s richness index and Menhinick’s diversity index, were estimated at the end of the study. The result of floristic diversity assessment showed that the two forest reserves were able to conserve trees/shrubs species diversity. This was reflected by the value obtained for diversity indices for the two land use types: Shannon- Weinner (3.29, 3.08), species evenness (0.47, 0.49), Simpson (0.95, 0.93), Margalef (6.83, 6.49), Minhinck’s index (2.09, 1.79) for Sonkpa and Jabwanje forest reserves respectively. The density of fruit trees/shrubs encountered in the two forest reserves were (279, 414) which accounted for (47% and 56%) of the total woody population in Sonkpa and Jabwanje forest reserves respectively. Among the prominent fruit trees/shrubs encountered were Nauclea latifolia, Gardenia aqualla, Annona senegalensis, Prosopis africana, Vitellaria paradoxa, Vitex doniana, Strychnos innocua. However, the absence of Irvingia gabonensis and lower density of Afzelia africana was an indication that some important species are already going to extinction while others are endangered. Hence, the State government should, intensify the management of savanna forest by controlling the intensity of tree harvesting, stop illegal felling and encourage enrichment planting. Genetic improvement through germplasm collection and propagation studies should be carried out on the under exploited edible fruit species for genetically improved cultivars production.

Struktur Komunitas Echinodermata pada Berbagai Tipe Habitat di Daerah Intertidal Pantai Lakeba, Kota Baubau Sulawesi Tenggara

Echinoderms are one of organisms that inhabit intertidal areas which have important ecological roles in marine ecosystems, also have high economic values. The community structure and distribution pattern of Echinoderms in the intertidal area can provide an overview of the condition of the Echinoderm community. This research aims to determine the community structure of Echinoderms in various habitat types in the intertidal areas of Lakeba Beach, Baubau Town. The community structure of Echinoderms were observed using quadratic transec method. Echinoderms found were 777 individuals consisting of 18 species from 5 classes. Echinoderms were distributed in four habitat types, i. e. sandy, sand covered with seagrass, rocky, and rock covered with algae habitats. The highest abundance of Echinoderm was Ophiocoma scolopendrina (Ophiuroidea) and the lowest were Maretia planulata, Arachnoides placenta (Echinoidea), Holothuria scabra, H. leucospilota, Stichopus horrens (Holothuroidea), and Isocrinidae (Crinoidea). The species diversity of Echinoderms was categorized as moderate (H’ = 1,42180), species evenness was moderate (E = 0,49191), and no dominant species of Echinoderm community (D = 0,36601). Echinoderm community living in the intertidal area was influenced by antropogenic factors. Echinodermata merupakan salah satu organisme yang mendiami daerah intertidal yang memiliki peran ekologis penting bagi ekosistem laut, juga memiliki nilai ekonomis yang tinggi. Struktur komunitas dan pola distribusi Echinodermata pada daerah intertidal dapat memberikan gambaran mengenai kondisi komunitas Echinodermata. Penelitian ini bertujuan untuk mengetahui struktur komunitas dan pola distribusi Echinodermata di daerah intertidal Pantai Lakeba, Kota Baubau. Struktur komunitas dan pola distribusi Echinodermata diamati menggunakan metode transek kuadrat. Echinodermata yang ditemukan berjumlah 777 individu yang terdiri atas 18 jenis dari 5 kelas. Echinodermata terdistribusi pada empat tipe habitat yaitu habitat pasir, pasir yang ditutupi lamun, batu, dan batu yang ditutupi alga. Echinodermata yang memiliki kelimpahan tertinggi adalah Ophiocoma scolopendrina (Ophiuroidea) dan kelimpahan terendah adalah Maretia planulata, Arachnoides placenta (Echinoidea), Holothuria scabra, H. leucospilota, Stichopus horrens (Holothuroidea), dan Isocrinidae (Crinoidea). Keanekaragaman jenis Echinodermata dikategorikan sedang (H’ = 1,42180), kemerataan jenis sedang (E = 0,49191) dan tidak ada jenis yang dominan dalam komunitas Echinodermata (D = 0,36601). Komunitas Echinodermata yang hidup di daerah intertidal pantai dipengaruhi oleh faktor antropogenik.

Preliminary Study of Insect Diversity and Its Economic Importance in Agulu-Nanka Gully Sites

The study was designed to investigate the insect diversity and its economic importance in Agulu and Nanka gully sites using standard procedures. A total of 1,609 insects belonging to 15 species were identified from the study sites, which comprised of 1026 individuals belonging to 15 species from Agulu and 583 specimens belonging to 8 species from Nanka. The diversity of the insect species highlighted the dominance, diversity index, species richness and species evenness. Blattodea were the most dominant order in both Agulu site (43.27%), and Nanka site (56.60%). The order Blattodea was the most diverse (0.725) in Nanka site, whereas the order Coleoptera was the most diverse (0.740) in Agulu site. Results from the economic importance revealed 8 insect species as harmful, 3 species as beneficial, while 4 insect species were considered as both beneficial and harmful. Beneficial insects are edible and good agents of pollination while the harmful insects devour agricultural produce and stored food. The result of this study shows that gully erosion site is dominated by insect diversity, probably due to the flora regeneration.

Benthic polychaete off Tanintharyi Island, Myeik Archipelago

The survey examined shallow to deep-sea benthic data on benthic fauna from the Myanmar coastal region's northern sector. Benthic samples were collected from 17 stations (26-1500m depth) off Taninthayi Island during the Mayanmar ecosystem survey of the R/V Dr. Fridtjof Nansen Research Vessel. Polychaete (25 taxa in total) had a higher proportion than other groups of benthic fauna. The range of species diversity and evenness were insignificantly different, but species richness differed. The highest species diversity, species evenness, and richness were showed in shallow areas (26 m depth). Keywords: Diversity indices, Polychaetes, Taninthayi Island, Myeik Archipelago.

Keanekaragaman Makroalga di Perairan Teluk Kendari dan Sekitarnya, Sulawesi Tenggara

<strong>Macroalgae Diversity in Kendari Bay Waters and Surroundings, Southeast Sulawesi. </strong>Human activities around Kendari Bay cause environmental changes. It has an impact on fisheries and marine resources. Macroalgae was also affected by environmental changes, so management of macroalgae was required. The diversity of macroalgae can be used as baseline data for coastal area management. The aims of the study were to find out the diversity of macroalgae, biological indices of macroalgae and the factors that influence the diversity and abundance of macroalgae in Kendari Bay and surroundings. The study was conducted in September 2016, in eight locations, namely Lara Island, Lalow Aru, Tanjung Tiram, Baungkutoko, Watuw Atu, Bokori Island, Tapulaga, and Tenunggeu. Macroalgae samples were collected by the quadratic transect method. The data analyzed were Bray-Curtis similarity, diversity, richness, evenness, and dominance index. The correlation between water quality and abundance or diversity of macroalgae was analyzed by multiple regression analysis. A total of 38 species of macroalgae were identified consisting of three Phyllum: 15 species of Chlorophyta, 10 species of Ochrophyta, and 13 species of Rhodophyta. Tanjung Tiram and Lalow Aru have the highest similarity index of 0.93. Macroalgae in Kendari Bay have the low to moderate category of species diversity, low category of species richness, the medium to high category of species evenness, and the low to moderate category of species dominance. There was a gradient pattern of macroalgae diversity in Kendari Bay and surroundings. Seagrass cover and water quality have more influence on macroalgae diversity than macroalgae abundance in Kendari Bay and surroundings.

Butterfly diversity in the three selected areas in Dhaka city, Bangladesh

The diversity of butterfly species was studied from January to June 2015 in the three selected areas, viz. Ramna Park, Jagannath University Campus, and Baldha Garden in Dhaka city, Bangladesh. A total 75 species of butterfly belonging to 42 genera under 8 families were recorded from the study areas during the study period. Of them, 52 species (6253 individuals) of 8 families were found in the Ramna Park, 37 species (1430 individuals) of 7 families in the Jagannath University Campus and 20 species (320 individuals) of 6 families in the Boldha Garden. In these three study areas, 17 species, 14 genera and 6 families were in common. At the Ramna Park, the highest species richness included the family Lycaenidae (21.15%, 11 spp.) followed by Papilionidae (17.31%, 9 spp.), Pieridae (17.31%, 9 spp.), Nymphalidae (17.31%, 9 spp.), Hesperiidae (13.46%, 7 spp.), Danaidae (7.69%, 4 spp.), Satyridae (3.85%, 2 spp.), and the lowest was in the family Acriidae (1.92%, 1 spp.). At the Jagannath University Campus the highest number of species were recorded in the family Lycaenidae (21.62%, 8 spp.) and Hesperiidae (21.62%, 8 spp.) followed by Pieridae (18.92%, 7 spp.), Papilionidae (13.51%, 5 spp.), Nymphalidae (10.81%, 4 spp.), Danaidae (10.81%, 4 spp.), and the lowest was in Satyridae (2.70%, 1 spp.). The topmost butterfly species were recorded in the family Pieridae (25%, 5 spp.) followed by Lycaenidae (20%, 4 spp.), Nymphalidae (20%, 4 spp.), Papilionidae (15%, 3 spp.), and the lowest from the family Hesperiidae (10%, 2 spp.) and Danaidae (10%, 2 spp.) at the Baldha Garden. The maximum butterfly species were found in February to June (51 spp.), February (34 spp.), and April (16 spp.), and the lowest were in January (46 spp.), June (21 spp.) and January (8 spp.), respectively for the Ramna Park, Jagannath University Campus and the Baldha Garden. The peak of the population observed in May (n =1285), March (n = 325), and May (n = 71), and the lowest was in January (n = 662), June (n = 145) and January (n = 21), respectively for the Ramna Park, Jagannath University Campus, and Baldha Garden. The Shanon’s Diversity Index (H) and Simpson’s Index (λ) indicated high butterfly diversity at the Ramna Park (H = 3.68, λ = 0.03), Jagannath University Campus (H = 3.20, λ = 0.06) and Baldha Garden (H = 2.50, λ = 0.13), respectively. The high Species Evenness in the Ramna Park (E = 0.93), Jaganath University Campus (E = 0.89) and the Baldha Garden (E = 0.84) indicated that the species were evenly distributed. The calculated Sorenson’s Coefficient (CC) was 0.47, which indicates that these three communities have quite a bit of overlap or similarity. Bangladesh J. Zool. 48(2): 413-428, 2020