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Diversity of Insects of Two Rice (Oryza sativa L. 1787) Farms in Nnamdi Azikiwe University, Awka, Nigeria 尼日利亚阿卡 Nnamdi Azikiwe 大学两个水稻（Oryza sativa L. 1787）农场的昆虫多样性

Asian Journal of Biology Pub Date : 2023-11-21 DOI: 10.9734/ajob/2023/v19i3371

Mbelede, K. C., Akunne, C. E., Ononye, B. U., Chidi, C. A., Okafor, K. P., Okeke, T. E., Aniefuna, C. O.

{"title":"Diversity of Insects of Two Rice (Oryza sativa L. 1787) Farms in Nnamdi Azikiwe University, Awka, Nigeria","authors":"Mbelede, K. C., Akunne, C. E., Ononye, B. U., Chidi, C. A., Okafor, K. P., Okeke, T. E., Aniefuna, C. O.","doi":"10.9734/ajob/2023/v19i3371","DOIUrl":"https://doi.org/10.9734/ajob/2023/v19i3371","url":null,"abstract":"The recognition of insect-related damages to rice plants and the subsequent consequences for biodiversity have shown the relevance of insect communities in rice farms. This study documented the insect fauna of rice (Oryza sativa L. 1787) in two rice farms in Nnamdi Azikiwe University, Awka, Nigeria from September to November, 2022. The insects associated with the two sites were collected using handpicking, sweep net, water trap and pitfall trap methods. Data collected from the study were subjected to non-parametric t- test at 5% significant level. A total of 51,021 insects belonging to twelve insect orders were found associated with the two sites. Out of the aforementioned number, 15,120 (29.63%) were collected from site 1 while 35,901 (70.37%) were collected in site 2. There was significant difference (P <0.05) on insect abundance between site 1 and 2. Crematogaster peringueyi was found to be the most abundant (82.67%) insect in site 1, whereas Camponotus perrisi was found to be the most abundant (27.85%) in site 2. The result further showed that only Hobomok skipper had the least relative abundance (0.01%) in site 1, while Catantops quadratu, Anacatantops notatus, Dysdercus cingulatus, Crematogaster peringueyi, Dasyleurotettix infaustus and Apis mellifera had the least relative abundance (0.01%) in site 2. The diversity indices computed showed that Site 1 had a higher Simpson dominance index (0.6845), Shannon Weiner diversity index (1.07597) and Shannon Weiner evenness than site 2 (0.0019, 0.41248and 0.0393 respectively). The Margalef richness index (6.3879) of site 2 was greater than site 1 (4.9876).There is need for regular monitoring of insects in rice farms for sustainable management of the crop.","PeriodicalId":504702,"journal":{"name":"Asian Journal of Biology","volume":"206 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139250967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fish Cultivation Techniques for Common Carp (Cyprinus carpio Linn.) Strain “Mantap” at Center for Freshwater Fish Cultivation (BBPBAT) Sukabumi, West Java, Indonesia 印度尼西亚西爪哇苏卡布米淡水鱼养殖中心的鲤鱼（Cyprinus carpio Linn.

Asian Journal of Biology Pub Date : 2023-11-16 DOI: 10.9734/ajob/2023/v19i3370

Yuli Andriani, R. Pratama

{"title":"Fish Cultivation Techniques for Common Carp (Cyprinus carpio Linn.) Strain “Mantap” at Center for Freshwater Fish Cultivation (BBPBAT) Sukabumi, West Java, Indonesia","authors":"Yuli Andriani, R. Pratama","doi":"10.9734/ajob/2023/v19i3370","DOIUrl":"https://doi.org/10.9734/ajob/2023/v19i3370","url":null,"abstract":"The cultivation of Carp (Cyprinus carpio, Linn) in hatcheries can be approached through various methods, including traditional, semi-intensive, and intensive techniques. Presently, many hatchery operations still adhere to traditional practices. This activity aimed to actively engage with, study, apply and report advanced techniques in the breeding of Common Carp (Cyprinus carpio, Linn). This practical training was conducted between May 22, 2023, and July 14, 2023, at the Sukabumi Freshwater Aquaculture Center (BBPBAT). Data collection during the activity encompassed both primary and secondary sources. Natural spawning of Common Carp was executed with a male-to-female sex ratio of 2:1, utilizing 60 male broodstock with an average weight of 500 grams and 30 female broodstock weighing around 2,000 grams each. The results of this spawning procedure yielded a fertilization rate of 82.77% and a hatching rate of 68%. Subsequently, 600,000 larvae were obtained from the spawning process. These larvae were then transferred to a nursery pond with a stocking density of 300 individuals per square meter (300 individuals/m2). Over a span of 24 days in the nursery pond, a survival rate of 51.5% was achieved. This activity served as a hands-on exploration of advanced Common Carp breeding techniques at the BBPBAT facility, providing valuable insights into modern hatchery management.","PeriodicalId":504702,"journal":{"name":"Asian Journal of Biology","volume":"47 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139270610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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