Tn 4351 was originally isolated from bacteroides fragilis [30] . The transposon was successfully introduced into Cytophaga succinicans, Flavobacterium meningosepticum, Flexibacter canadiansis, Flexibacter strain SFI and Sporocytophaga myxococcoides by conjugation [25]. Tn 4351carries two antibiotic resistance gene. One of the codes for resistance to erythromycin and clindamycin which is expressed in bactroides but not in E.Coli. The other gene codes for resistance in tetracycline and is expressed in aerobically grpwn E. coli, but not in anaerobically grpwn E. coli or in bacteroides.
Introduction For two days, on the 14th and 15th of April, a field excursion to Hastings Point, New South Wales was conducted. At Hastings Point, topography, abiotic factors and organism distribution were measured and recorded, with the aim of drawing links between the abiotic factors of two ecosystems (rocky shore and sand dunes), the organisms which live in them, and the adaptations they have developed to cope with these conditions. Within these two ecosystems, multiple zones were identified and recorded, and this report also aims to identify the factors and organisms associated with each zone. Lastly, using data and observations from the past, predictions for the future of the rock pool ecosystem were made.
Introduction The bean beetle also known as the Callosobruchus maculatus, is an agricultural pest insect from Africa and Asia. That can be found throughout the tropical and subtropical regions. The lifecycle of a bean beetles is quite short an adult been beetle lays their eggs on the external surface of a bean. The larva hatches from the egg burrows from the egg through the seed coat and into the bean endosperm without moving outside the protection of the egg.
Joshua Rabideau 11/10/2016 BIOL 380 – Lab: Monday Black-Capped Chickadee Foraging Habits There are numerous organisms and interactions occurring within any ecosystem. Many times, the interactions between organisms and habitats are based on the energy needs of the organisms. In this experiment, a null hypothesis that the Black-capped Chickadee forages on various trees at random. Upon data analysis of the gathered information, it can be determined that the Black-capped chickadee were not choosing foraging sites at random. The results of a chi square test gave a value of 19,890 which is significantly larger than the 16.812 value needed to void the null hypothesis with six degrees of freedom; the probability that this variation was due to chance is less than .01.
On the trip with SWEEP the health of the Susquehanna River was studied. In order to do that, chemical test, biological tests, and physical observations were made. Chemical testing showed the more scientific side of water quality, such as the amount of nitrates, phosphates, the pH values, temperature, dissolved oxygen, and turbidity. Searching for macroinvertebrates was the biological testing. Certain macroinvertebrates and the quantity found determines how healthy the stream is.
The Choco Indian rolled the dart tip on the Golden Poison Dart Frog 's back. Then he inserted the dart into the blowgun, ready for his dinner. The poison of the Poison Dart Frog has been used by the Choco Indians since ancient times. The Choco Indians would use the Golden Poison Frog 's poison by exposing the frog to heat. They then would lace their darts and arrows with this toxin.
This one explanation full illustrates the importance of a balanced ecosystem and how the introduction of a predator can make sweeping changes in the
The antipredator attacks were compared to one group versus both groups (Schadelin et al. 2012). The results of the study showed that there was a reduction in predator defense by the test pair when they established their breeding cavity next to a neighbor. Potential explanations for this result is that in the presence of an established neighbor they could potentially indicate better breeding habitat and greater safety through increased mobbing (Schadelin et al.
This lab was designed to study the birds’ preferences of habitat site, seed size, feeder gradient, and how every species will interact with other species. The study site for this lab was in Hammond Woods, and in order to complete this experiment, we set up 8 types of feeders, which varied in open or closed site, big or small seed, and high or low feeder. The data were collected from different study groups from different time of the day, the experiment started from the beginning of October, and last for 1 week. Before this lab, we came up a null hypothesis that all Chickadee, Titmouse and Nuthatch will show no preferences on seeds size, feeding gradient and habitat sites, which means they will choose open and close sites, large and small seeds,
Gaze out and look at the nice calm pond. It’s so smooth that the ducks look like they Are gracefully gliding across the pond. Similar to how an ice skater glides Across the ice rink. it is as if the ducks are performing a show for you to see.
Introduction Predation is a biological interaction between two organisms of different species in a community in which one acts as a predator and captures and feeds on the other, the prey. Predator-prey relationships keep animal populations in balance. When prey populations increase more food is available for predators, and they increase in number as well. An increase in predators triggers a decrease in prey populations. As prey populations decrease predator populations soon follow as their food supply diminishes.
Ogari 1988.Growth and mortality rates of the Nile Perch. FAO fisheries report,389:272-287 FishBase, 2004. " Lates niloticus, Nile perch" Kitchel, J., D. Schindler. 1997. The Nile perch in Lake Victoria: Interactions between predation and fisheries. Ecological Applications, 7 (2): 653-664.
Student name : Li Zhang Student ID:GEC00000AR VU21466 - Give and respond to a range of straightforward information and instruction. TASK1 1Peter and Greg 2fishing 3Relaxed and serious 4Has interviewed Greg before 5Has a television program 6Popularity of fishing in Australia The dangers of rock fishing 7beautiful, lovely,dried up,crirical,popular,fishing,old,street,prinball 8Yes ,I like fishing.
Australia is home to diverse fauna and flora, many of them are on the brink of extinction. Unfortunately, Orange-bellied parrots is one of them, it’s time for Aussie to start saving these beautiful creatures. The Orange-bellied Parrots Many of the Victorian animals are under extreme threats due to human over exploration, a lot of these lovely, harmless animals are on the way to extinction or it has already extinct in the wild. The orange-bellied parrots (Neophema chrysogaster, under the family of Psittacidae) are now critically endangered and listed under the Environment Protection and Biodiversity Conservation Act 1999.
The understanding of evolution that I now have is a lot clearer in several ways. The examples used in the videos were good at explaining how natural selection is capable of choosing what traits are significant, and as a result those organisms reproduce making the trait the majority. For example the peppered moth was an excellent way to explain natural selection. The white peppered moth had a high fitness level due to the very bright environment it inhabited. The bright environment made it hard for predators to prey on the white peppered moths.
