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Manajemen persediaan sangat penting bagi suatu usaha dalam menjalankan aktivitas perusahaannya. Apabila manajemen persediaan tidak dilakukan dan dikontrol dengan baik, maka dapat menimbulkan selisih stok barang pada usaha tersebut. Serba 8000 Aviari memiliki kendala dalam perhitungan stok fisik dengan stok sistem. Oleh karena itu, penulis akan membantu mitra dalam mengatasi kendala tersebut. Pengumpulan data yang dilakukan oleh penulis adalah dengan menggunakan metode observasi dan wawancara. Hasil implementasi manajemen persediaan di Serba 8000 Aviari adalah dengan melakukan stock opname dengan menggunakan Google sheet untuk merapikan stok yang kemudian di opname sesuai dengan jumlah barang yang sudah dihitung sebelumnya ke dalam sistem GF-Akuntansi pada mitra. Kegiatan ini dilakukan untuk mempermudah Serba 8000 Aviari dalam menyeimbangkan stock on hand dan stok pada sistem agar tidak terjadi selisih stok barang.

The utilization of the gambier plant in Gunungsitoli City is still limited to produce dried gambier leaves as a raw material for betel nut chewing, so it has the potential to be processed into gambier which has high economic value. The study was aimed to determine the quality of gambier produced from gambier plants that grow in Mado Laoli Village, Gunungsitoli City with different drying methods. This study used a completely randomized design (CRD) consisting of 2 treatments, that were P1 (sun drying) and P2 (oven drying) with 3 replications. The results showed that the gambier plant in Mado Laoli Village had a high potential to be processed into gambier because it has produced gambier which have good quality and met the SNI quality requirements. Sun drying produced gambir second quality (15.48% of water content, 2.37% of ash content, 59.36% of catechin content, 12.17% of tannin content, 5.54% of water insoluble material, 3,29% of alcohol insoluble material). Oven drying produced gambir first quality (11.30% of moisture content, 2.18% of ash content, 68.15% of catechin content, 12.24% of tannin content, 6.32% of water insoluble material, 3.77% of insoluble alcohol). Different drying methods had a significant effect on the yield, moisture content, catechin content, water insoluble material and alcohol insoluble material content.

Porang plants are widely cultivated in Indonesia as a potential source of glucomannan. Glucomannan is obtained by separating impurity components such as starch, cellulose, protein, fat, and the rest of the flour bag from porang flour. The purpose of this study was to determine the effect of the isolation method on porang flour to produce high purity glucomannan. In this study, the extraction of glucomannan was carried out by a modified simple centrifugation method with the addition of aluminum sulfate (EAS), sodium metabisulfite (ENM), both (ENMAS), and no treatment (EK). All of the glucomannan obtained was then analyzed for composition, color, transparency, degree of acetylation and viscosity. The characteristics of porang glucomannan were then compared with konjac glucomannan (PKG). The results showed that ENMAS showed the highest value with a purity value of 93.71%, WHC 55.06 g water/g glucomannan, whiteness degree 79.16, and gel viscosity 73000 cps.

Tea talua is a traditional Minangkabau drink made from tea mixed with egg yolks and beaten with sugar and some other additives. Currently there are no instant talua tea drinks available. Instant drinks are usually in powder form served in airtight packages. Powdered drinks are prepared by quick drying with the addition of coating agents. This study aims to determine the effect of different types of eggs on the physicochemical quality of instant egg tea produced. This research method used a completely randomized design (CRD) which consisted of 3 types of treatment and 3 repetitions. This study used a completely randomized design (CRD) with 3 treatments and 3 replications. The treatment given was the difference between egg yolks as raw material for talua tea, including: R = chicken eggs, B = duck eggs, and K = native chicken eggs, so that 9 treatment units were obtained. Data were analyzed using Analysis of Variance (ANOVA) and Duncan's Multiple Range Test (DMRT) at 95% confidence level. The use of different types of eggs did not differ significantly in the proximate test, namely moisture content (2.17+0.40 - 2.41+0.26%), ash content (1.02 + 0.02 - 1.05 + 0.06%), fat content (6.43 + 3.86 - 7.98 +2.10%), protein content (7.74+1.34 - 8.3+0.53%), carbohydrate content (80.48+2.78 - 82.39 +4.47 %) and the yield (6.70 +0.55 - 8.61 +2.15 % )of instant talua tea produced Keywords: instan drink, egg, tea, teh talua.

Limbah cair industri pembekuan udang merupakan salah satu sumber mikroorganisme pendegradasi kitin yang potensial. Tulisan ini melaporkan pencarian sumber enzim kitinolitik dari limbah industri perikanan. Tujuan dari riset ini adalah mengisolasi bakteri kitinolitik dari instalasi pengolahan limbah cair pembekuan udang dan mengidentifikasi bakteri terbaik penghasil kitinase. Skrining isolat bakteri dilakukan dengan mengevaluasi indeks kitinolitik (IK) pada medium kitin agar (koloidal kitin 2%). Terdapat 5 bakteri dengan indeks kitinolitik terbesar pada medium agar, yakni AR 17 dengan nilai IK 2,59 diikuti isolat bakteri AR 15; AR 18; AR 16 dan IL 08 secara berturut turut dengan nilai IK 2,55; 2,43; 2,32 dan 2,17. Lima isolat ini kemudian diukur nilai aktivitas kitinolitik pada medium kitin cair yang diperkaya koloidal kitin 1% pada suhu 30ºC. Berdasarkan pengujian didapatkan hasil bahwa Isolat AR 18 memiliki aktivitas enzim kitinolitik terbesar. Hasil identifikasi bakteri yang dilakukan secara biokimia menunjukkan bahwa isolat AR18 memiliki kemiripan 83,33% dengan Corynebacterium striatumKata Kunci: bakteri kitinolitik, isolasi, identifikasi, kitinase, Limbah cair pembekuan udang

Saat ini kelompok budidaya ikan koi di Desa Perbarakan masih terfokus pada proses pemijahan alami sehingga perlu penerapan teknologi pemijahan semi alami yang dinilai dapat meningkatkan kuantitas dan kualitas produksi ikan koi. Metode eksperimen lapangan yang dilakukan dengan melakukan perbandingan pemijahan alami dengan pemijahan semi alami menggunakan induk ikan koi yang siap dipijahkan dengan perbandingan 2 : 1 yaitu 2 ekor jantan (Kohaku dan Shiro) dan 1 betina (Tancho sanke doitsu) dengan melalui parameter pengamatan fekunditas, derajat pembuahan, daya tetas telur dan sitasan larva. Hasil variasi nilai fekunditas pemijahan alami adalah 7000 butir dan pemijahan semi alami adalah 14.000 butir, derajat pembuhan telur (FR) pemijahan alami adalah 71,42% dan pemijahan semi alami sebesar 85,71%, selanjutnya persentase daya tetas telur ikan koi pada pemijahan alami adalah 90% dan pemijahan semi alami sebesar 95% , sintasan larva tertinggi pada pemijahan semi alami 78,26% sedangkan pada pemijahan alami 44,44%. Sehingga penggunaan bantuan hormon ovaprim dinilai dapat menghemat waktu proses pemijahan dan tingkat keberhasilan lebih tinggi dibandingkan dengan teknik pemijahan alami

Pada pengoperasian sistem tenaga listrik diperlukan kualitas dan tingkat keandalan yang baik, salah satunya adalah tegangan yang sampai ke pelanggan tidak mengalami drop tegangan. Salah satu cara agar perencanaan dan pengoperasian tenaga listrik tersebut baik adalah dengan analisis load flow. Analisis load flow bertujuan untuk mengetahui karakteristik aliran daya yang berupa pengaruh dari variasi beban dan rugi-rugi pada aliran daya dan juga mempelajari adanya tegangan jatuh di sisi beban. Tujuan penulisan paper ini adalah untuk melihat dan menganalisa load flow sistem saat kondisi eksisting, hubung singkat (Short Circuit) dan pada saat adanya penambahan DG (Distributed Generation) yang mana pada penelitian ini DG yang dipakai adalah PV (photovoltaic). Analisa dilakukan pada GI (Gardu Induk) Kentungan feeder 3 (KTN07) yang terdiri dari 23 area (KTN07-A sampai KTN07-W) dengan total 106 busbar. Penelitian menggunakan ETAP (Electrical Transient Analyser Program) 12.6.0.

Sawang duck is one of Indonesia's local dual-purpose type ducks due to the offspring of Tsaiya ducks originating from Taiwan. Tsaiya ducks enter the Sawangarea, brought by residents from Singapore around 1955 and subsequently bred in the Sawang Village, adapting to the environment and the local farming. This research was conducted in August-December 2018. Primary data on the qualitative, morphometric, and potential feed were taken in Sawang Village, Karimun Regency, Riau Islands Province. Currently, Sawang duck is only found in Sawang Village, maintained by two farmers. Secondary data of potential areas and poultry populations were obtained from the Department of Food and Agriculture of Karimun Regency, and proximate analysis was carried out at the Ruminant Nutrition Laboratory, Faculty of Animal Husbandry, Andalas University. The research method was conducted by survey with census sampling techniques. The Sawang duck has a diversity of colors for feather, skin, beak, and shank. The morphometric decrease was indicated by bodyweight of 1,450 ± 119.52 grams, femur length of 7.41 ± 1.62 cm, tibia length of 9.94 ± 0.51 cm, length of shank 4.38 ± 0.25 cm, third finger length 6.36 ± 0.90 cm, maxilla length 5.21 ± 0.16 cm, backbone length 20.13 ± 1.13 cm, wing bone length 26.65 ± 1.70 cm, bone length chest 10.63 ± 0.80 cm, and shank circumference 1.24 ± 0.10 cm. Efforts to preserve ducks Sawangneed to be considered so that their existence is not destroyed by exploiting the existing area's potential.

The background of this research was that the classroom atmosphere was very calm, no one responded to the teacher's explanation, even though the teacher had repeatedly given the opportunity to ask questions. The questions given were sufficient, but in the final results of the formative test given by the teacher, the results were still far from what was expected. This study aims to describe the learning achievement of the second semester students of SDN 88 / II Sungai Mengkuang, Bungo Regency, academic year 2016/2017 in Indonesian through the assignment method. This type of research is a classroom action research (PTK) with a qualitative descriptive approach carried out in three cycles. The results showed that the use of the assignment method in class II students can improve student achievement in pre-cycle only 38.7%, 38.7% first cycle, 61.29% cycle, and 87.09% third cycle

Dersita, Rambey R, Muhtadi A, Onrizal O, Mamurung VR, Hasibuan JS, Tamba IS. 2022. Biodiversity of nekton in the Barumun Watershed, Labuhanbatu District, Indonesia. Biodiversitas 23: 2426-2432. Biodiversity is a very valuable source of germplasm for science and sustainable development. Therefore, research on freshwater biodiversity is very important to support the sustainability of this development. The research investigated three rivers in South Labuhanbatu District, North Sumatra, Indonesia: Barumun, Tasik, and Titi Kembar rivers. This investigation aims to ascertain the composition, distribution, and variety of nekton. From April to August 2020, the trial lasted five months. Nekton samples were collected with the aid of nets and fishing nets. While installed in the afternoon, the nets are removed the following day. Additionally, at each observation point, stocking nets were operated three times. The investigation discovered 38 fish species and one shrimp species. Two species of fish discovered, are protected by the government of the Republic of Indonesia. Both fish species are Tenualosa terubuk, a fish with little protection, and Fluvitrygon signifer, a ray fish with complete protection. The study site's sole shrimp species was the gigantic prawn Macrobrachium rosenbergii in the Barumun river. The index of nekton diversity discovered in the three rivers was not identical. Compared to other rivers, the Tasik river station has a high diversity. This makes the Tasik river rich in fish compared to the Barumun and Titi Kembar rivers. The Tasik river is recommended as water suitable for fish life from these results.

Pembangkitan listrik dengan menggunakan bahan bakar fosil dapat meningkatkan pemanasan global. Untuk mengurangi penggunaan bahan bakar fosil tersebut dapat diatasi dengan pengembangan dan pemanfaatan Energi Baru Terbarukan (EBT). Salah satu contoh dari EBT tersebut adalah Photovoltaic (PV). Penambahan PV dengan penetrasi dan penempatan yang bervariasi memiliki pengaruh yang berbeda-beda terhadap aliran daya. Disisi lain, ketidakseimbangan beban mengakibatkan munculnya arus di netral trafo. Arus yang mengalir di netral trafo ini menyebabkan terjadinya losses (rugi-rugi), yaitu losses akibat adanya arus netral pada penghantar netral trafo dan losses akibat arus netral yang mengalir ke tanah. Tujuan penelitian ini adalah untuk melihat pengaruh masuknya PV ke sistem dengan penetrasi yang berbeda-beda. Penambahan PV di ujung dekat beban dengan penetrasi 10 %, 20% dan 30 % pada tegangan 0,38 kV menyebabkan losses naik sebesar 3,5 kW, 30,8 kW dan 101,6 kW, sedangkan Penambahan PV di tengah saluran dengan penetrasi 10 %, 20% dan 30 % pada tegangan 20 kV membantu mengurangi losses sebesar 9,4 kW, 11,4 kW dan 13 kW. Selain itu, untuk melihat load flow sistem saat terjadi ketidakseimbangan beban pada Wirobrajan substation feeder 1 yang terdiri dari 4 area penyaluran yaitu Ngestiharjo-pakuncen, Tegalrejo, Bumijo A dan Bumijo B dengan menggunakan ETAP (Electrical Transient Analyzer Program) 12.6.0.

Red dragon fruit is one of the agricultural commodities in Simpang Sugiran Village. Dragon fruit has many functions and properties for health. Based on monitoring in the field, farmers do not have the knowledge and skills in processing dragon fruit into various processed dragon fruit products to increase their selling value. In addition, the price of dragon fruit and farmer acceptance continues to decline while the number of farmers cultivating is increasing. The purpose of this activity was to increase community knowledge and skills in processing dragon fruit, and business management to increase the added value of dragon fruit cultivation. The results of community service activities indicated that the diversification of dragon fruit processing is one of the most effective ways to increase community income in the Simpang Sugiran village. Dragon fruit can be processed into various processed products using simple technology and can be done as a home industry. This community service activity can motivate and encourage the entrepreneurial spirit of the Farmer Group of Simpang Sugiran, Guguak Sub District, Lima Puluh Kota, West Sumatra.

The purpose of this study was to describe the relationship between the role of parents in the implementation of learning from home mathematics subjects to the mathematics learning outcomes of 5th graders at SD Negeri 04 Silungkang 3, Silungkang District, Sawahlunto City. This type of research is correlative research. The population in this study were 5th-grade students of SD Negeri 04 Silungkang 3 for the 2020/2021 academic year, totaling 25 people. The sampling technique is total sampling. The instrument in this study is a questionnaire on the role of parents in the implementation of learning from home in mathematics. Based on the calculation, the calculated r-value is 0.86 and the r table value is 0.382. Because of the value of r arithmetic > r table, it can be concluded that there is a significant relationship between the role of parents in the implementation of learning from home mathematics subjects to the mathematics learning outcomes of grade 5 students at SD Negeri 04 Silungkang 3 because the value of r count is 0.86 which means that the level of the relationship between the role of parents in the implementation of learning from home mathematics is very strong. So it can be concluded from this study that there is a significant and very strong relationship between the role of parents in the implementation of learning from home mathematics subjects to the mathematics learning outcomes of 5th graders at SD Negeri 04 Silungkang 3, Silungkang District, Sawahlunto City.

Oyster mushrooms are widely cultivated by Saraso farmer group Kenagarian Batu Balang, Harau District, Lima Puluh Kota Regency. The purpose of the activity was to increase knowledge and skills and empower the women of the Saraso Farmers Group, in the diversification of processed oyster mushroom products in order to increase the selling value. So far, the oyster mushrooms they cultivate are sold in fresh mushrooms, and only a few sell in processed food. The hope is that with this activity, the community can make various processed oyster mushrooms to add value to the sale which is expected to raise the family economy. The activity method was carried out by demonstration and hands-on practice. The results of community service activities showed that the women of the Saraso farmer group are able to process oyster mushrooms into various ready-to-consume products. Various processed mushrooms are made, namely Dendeng oyster mushroom, oyster mushroom beef, oyster mushroom satay, oyster mushroom shredded and additional materials, namely making sauces and chili sauce. This activity succeeded in arousing the motivation of the Saraso farmer groups in making variations of processed oyster mushrooms.

Based on statistical analysis from Dinas Kelautan Perikanan, Deli Serdang Regency in 2018, The capacity for freshwater aquaculture output was recorded at 1328.9 tons / year with a land area of 65.9 ha , which is a problem for the aquaculture community with the decreasing quantity of seed production, limited infrastructure and development management which is still conventional in Desa Perbarakan, Deli Serdang Regency, therefore it is important to implement the required application of science and technology, namely the implementation of semi-natural methods of spawning techniques of koi fish (Cyprinus carpio). Counseling, seminars and practices are the methods of tasks carried out. Extension activities were carried out by illustrating the conceptual awareness of the development of koi fish spawning strategies, the distribution of leaflets, the application of recognition technology, as well as tools and resources, including the dose of gonadotropin hormone (GnH) in broodfish and fish anaesthetic techniques. For female fish, the injected hormone level is 0.5 ml / kg and 0.1 ml / kg for male fish. The weight of the female fish is 1 kg tancho sanke doitsu, 0.5 ml/gr, and the weight of the male fish is 1 kg. At a dose of 0.1 ml / gr and 900 g of shiro, kohaku at a level of 0.09 ml / gr. The result is that the number of eggs is estimated at 10,000, and then the eggs hatch within 2-4 days. Boiled egg yolks are fed to the eggs which hatch into the larvae, then the larvae are transferred to the nursery pon after 10 days of age.

Rambey R, Susilowati A, Rangkuti AB, Onrizal O, Desrita, Ardhi R, Hartanto A. 2021. Plant diversity, structure and composition of vegetation around Barumun Watershed, North Sumatra, Indonesia. Biodiversitas 22: 3250-3256. Watershed ecosystem plays an important role in water and soil conservation which is supported by vegetation around watershed. As such, vegetation analysis is beneficial to assess the current state of watershed vegetation and monitor future changes. Barumun Watershed, located in South Labuhanbatu District, North Sumatra Province, Indonesia, is under threat due to habitat degradation and land conversion for plantation and agriculture. This research aimed to investigate the diversity, structure and composition of vegetation in the Barumun River including its smaller streams (rivulets). Data were collected using a combination of line transect and quadratic plots arranged systematically. The total observation plots were 48 plots, consisting of 24 plots in Barumun River, 12 plots in Tasik Rivulet and 12 plots in Titi Kembar Rivulet. The results documented a total of 51 plants in the studied sites in Barumun Watershed in which 37 species were found in Barumun River, 20 species in Tasik Rivulet and 17 species in the Titi Kembar Rivulet. Plant species consisted of several habitus including herbs, palms, shrubs, climbers and trees. The trees consisted of 22 species (43.13%), herbs 22 species (43.13%), climbers 3 species (5.88%), shrubs two species (3.92%), and palm two species (3.92%). The highest Importance Value Index (IVI) for tree community was recorded in the Barumun River from Hevea brasiliensis (108.28), followed by Cryptocarya sp. (123.24) in the Titi Kembar Rivulet. In addition, the highest IVI for pole, sapling, seedling, and shrub was recorded from Muntingia calabura (Barumun River), Nauclea orientalis (Tasik Rivulet), Psychotria viridiflora (Tasik Rivulet), and Calamus axillaris (Titi Kembar Rivulet), respectively. The plant diversity in Barumun Watershed was categorized from low to moderate level of richness.

Desrita, Hasugian FK, Yusni E, Manurung VR, Rambey R. 2021. Feeding habits of Tinfoil barb Barbonymus schwenenfeldii in the Tasik River, South Labuhanbatu, North Sumatra, Indonesia. Biodiversitas 22: 2131-2135. Research on feeding habits of Tinfoil barb, Barbonymus schwanenfeldii was carried out in the Tasik River from July to August 2020. This study aims to determine the composition of foods consumed by Tinfoil barb fish, and the availability of natural food in the Tasik River from 3 sampling stations. Fishes were caught using a gillnet with a mesh size of 3.18 cm, then the fish samples were dissected, and the digestive tract was taken and preserved with 10% formalin. A total of 138 Tinfoil bars were caught for this study. Analysis of stomach contents found that Tinfoil barb ate phytoplankton (41-48%) as the primary food, moss (25-38%), plant pieces (13-17%), worms (2-11%) as a complementary food and few of insects (0-4%), zooplankton (0-1%) as other foods. Based on analysis of food item values, all types of food and ratio within the intestine length and the total length showed that Tinfoil Barb was classified as omnivorous. The availability of natural foods for Tinfoil Barb in the Tasik River consists of the genera Asteroinella, Bacillaria, Bidulphia, Cestom, Gyrosigma, Gonatozygon, Oscillatoria, and Thalassiora.

Stingrays are a group of fish that have high economic potential landed at TPI Tanjung Beringin. The dominant type of stingray landed at TPI Tanjung Beringin is the Dwarf Whipray (Brevitrygon heterura) or commonly called Tuka-Tuka by the local community. This research wa carried out during July and September of 2021 at TPI Tanjung Beringin, survey method with a census technique, namely a method by seeking various information and various facts regarding the biological aspects. This study aims to determine the growth and exploitation rate of the dwarf whipray. There were 82 dwarf whipray, which were then measured for length and weight. The results of the study concluded that dwarf whipray (Brevitrygon heterura) which landed in TPI Tanjung Beringin had a negative allometric growth pattern, namely length growth was greater than weight growth. The exploitation status of the dwarf whipray (Brevitrygon heterura) in the waters of the Malacca Strait is classified as overfishing.

Indian Mackerel (Rastrelliger kanagurta) is one of the main catch fishery at Tanjung Beringin’s Auction Place, Serdang Bedagai, Sumatera Utara. The purpose of this research is to analyze the stock status of indian mackerel landed at Tanjung Beringin. This research was conduted in July – September 2021. The method of research used purposive sampling method. The total sample fish of indian mackerel were 272 individuals. The research showed Indian mackerel’s sex ratio was 1: 1.060. Indian mackerel’s growth pattern was negative allometric. Value estimation of male and female’s L∞ was 268.80 mm and 295.05 mm. Value K of male mackerel was bigger than female. But value of Lc and Lm male mackerel were smaller than female. The total rate of mortality was 2.466/year, natural mortality was 0.684/year and fishing mortality (F) was 1.782/year. The rate of exploitation was 0,723 classified as high exploitation level (overfishing).

Percut Sei Tuan is a coastal area on the east coast of North Sumatra which has a lot of natural resource potential, one of them which is green mussels (Perna viridis). Green mussels have many benefits, namely for consumption, cultivation and bioindicator. This study aimed to determine the density, habitat location, growth pattern, frequency distribution of green mussels, physical-chemical parameters of water, a substrate of the bottom waters, and the relationship of green clams density to water and substrate parameters. The study was conducted in July-September 2020. Data analysis included density, the relationship of total length and weight of green mussels, the frequency distribution of shell lengths, and Principal Component Analysis (PCA). The results showed that the density of green mussels at stations I, II, and III were 352 ind/m2, 3 ind/m2, and 1 ind/m2, respectively. The relationship between the length and weight of green shells shows that the growth was negative allometric. The water condition, seen from the physical, chemical, and substrate parameters, was still suitable for P. viridis. Water and substrate parameters that were positively related to the density of green mussels were water temperature, nitrate, phosphate, C-organic, percentage of silt and clay. Parameters that were negatively related were salinity, pH, and percentage of sand in the bottom substrate. The present study suggested that Station I was an appropriate area for the growth and reproduction of green mussels.

Desrita, Muhtadi A, Leidonald R, Sibagaring RD, Nurfadillah 2020. Biodiversity of nekton in Batangtoru River and its tributaries in North Sumatra, Indonesia. Biodiversitas 21: 2344-2352. Batangtoru River which flows from the Tapanuli highlands (i.e., Sipirok, Tarutung, Siborong-borong, and Silangit) to the southwestern Indian Ocean is an important habitat for aquatic organisms in the western region of North Sumatra. This research was done to provide basic data on biodiversity of aquatic organisms in Indonesia, especially North Sumatra. The study was conducted in July-August 2019. Nekton was captured using backpack electrofishing units (12 volts and 9 Amperes), traps, nets, and bamboo trap. This study found 68 nekton species, consisting of fish (57 species), crab (3), shrimp (6), lobster (1), and 1 freshwater turtle (1). In general, nekton found in the Batangtoru River and its tributaries are native and economically valuable fish (Tor and eel), including the newly discovered species, which was, Hemibagrus caveatus. Invasive fish found consisted of 6 species, i.e., Cyprinus carpio, Oreochromis mossambicus, Oreochromis niloticus, Xiphophorus helleri, Hypostomus plecostomus, and Trichogaster pectoralis. The only invasive crustacean found was freshwater crayfish (Cherax quadricarinatus).