The rat species Rattus Norvegicus tends to live in big packs, with a dominant male as their “leader”. While the rats live in these big packs, they use multiple ways of communications in order to be able to communicate with each other. The Rattus Norvegicus in general has great hearing, but typically when they are communicating with other rats they uses visual cues and body postures. Other than rats great hearing, this is only one good sense that these rats have. The Rattus Norvegicus also have a great sense
 An alternative theory states that the name in French was rouet de rats (or a spinning wheel of rats, the knotted tails being wheel spokes), with the term transforming over time into roi des rats.  History Rat king The earliest report of rat kings comes from 1564.  The phenomenon may have diminished when the brown rat (Rattus norvegicus) displaced the black rat (R. rattus) in the 18th century.  Most extant examples are formed from black
For the removal of these two rodents species is essential due to the damage it can cause and the disease they carry. The Norway rats tend to dig burrows for them to live in which cause instability of homes and buildings, blockage of sewer lines and spoil the look of landscaping yard. As for the roof rats, they often cause structural damage in houses as they gnaw on wood and wires. They are able to reduce harvest as they are tree climbers that feed on fruits. These rats are known to be carriers of some diseases
CHAPTER TWO 2.0 Rodents Grasscutter The grasscutter (Thryonomys swinderianus) is a wild herbivore rodent belongs to one of the two species of Cane rats, a small family of African hystricognath rodents are exploited in most areas as a source of animal protein (Asibey, 1974; NRC, 1991). Within the West African sub-region, the grasscutter is the most preferred bushmeat species and the most bushmeat sold in markets and by most people in Ghana and other countries within the sub-region prefer grasscutter meat to beef. It is also a source of livelihood for people in the grasscutter production, hunters and market seller (Asibey, 1974; Baptist & Mensah, 1986; Ntiamoa-Baidu, 1987; Centre for Biodiversity Utilization and Development, 2004). African giant
At this time, the parasites are useful tools that act as biological control to these insect pests. For example, the rice armyworm, Spodoptera mauritia in the order Lepidoptera, is a kind of caterpillars that occur in low populations in the rice field. The major reason of low occurrence of this species may due to the infection of fungus and parasitoid. The presence of fungal infections such as Paecilomyces and Metarhizium also helps to reduce the population of the Malayan black bug, Scotinophara coarctata, which are feed by sucking the sap of rice plants. Without the presence of these parasites, these species will increase in numbers within months and cause serious damage to food crops.
Lethal control occurs at scales ranging from targeting individual cats that have been deemed a nuisance, and professionals are contracted to eliminate cats as pests. Eradication programs have mainly been used on islands and have used a variety of methods aimed at completely removing the cat population. This allows for sensitive species to recover in often fragile and unique ecosystems. Nogales et al (2004) noted that cats have been removed from 48 islands, of which most were small. The methods used for removal were hunting, poisoning, trapping and the use of disease, often used on
According to Dela Cruz, et al. (2015), “two croppings a year for rice is now possible within MARIIS’ service area. Yet despite the abundance of water, good seeds and technology for rice production, the average yield of rice in the region is low at 4.7 MT/ha for hybrid and 3.56 MT/ha for inbred, both of which are way down below their potential
Chapter 1 INTRODUCTION Aspidiotus Rigidus or more commonly known as “cocolisap” is a destructive pest that attacks the Coconut tree by eating the leaves, fruits, and flowers until only the trunk is left (1). During infestation, the “cocolisap” completely covers completely the underside of leaves and defoliate, resulting to the shriveling of nuts leading to premature nut fall and even kill their host plants (2). The Philippines is the second largest producer of coconut products and, in some areas, coconut farming is the main source of livelihood (3). This massive infestation threatens the 12 billion peso coconut industry and the livelihood of our coconut farming families, mostly in the area of Calabarzon (Cavite, Laguna, Batangas, Rizal, and