Preview
Preview

Effect of Cascade on Some Biological Aspects of S. Littoralis Treated as 2nd Larval Instar

No Works Cited
Length: 2884 words (8.2 double-spaced pages)
Rating: Blue      
Open Document
Need writing help? Check your paper »



- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

RESULTS
Effect of Cascade on some biological aspects of S. littoralis treated as 2nd larval instar:
The data obtained in Table (1) showed that the corrected percentages of larval mortality had a positive relationship with the different concentrations of Cascade. The percentages of larval mortality were 30, 60, 80, 95 and 100 % at the Conc. of 0.1, 0.5, 1.0, 1.5 and 2.0 ppm, respectively. The response was dose dependent (i.e. the higher concentration affected more larvae). On the other hand the data obtained in the same Table. indicated that there was an inverse relationship between the different concentrations of Cascade and pupation percentages, 70, 40, 20, 5 and 0.0 % at Conc. of 0.1, 0.5, 1.0, 1.5 and 2.0 ppm, respectively, as compared with 100% in the control. While the percentages of pupal mortality was increased with the increase in concentrations. Also the percentages of the adult emergence were decreased with the increasing in concentrations as compared with control.
Total inhibitions of adult emergence were 36.25, 70, 91.25, 96.25 and 100 % at the Conc.of 0.1, 0.5, 1.0, 1.5 and 2.0 ppm, respectively, as compared with 0.0% in the control. The response was dose dependent (i.e the higher concentration induce more inhibition).
The larval and pupal durations were increased with the increasing of concentrations as compared with control, (i.e. the higher concentration induce more prolongation in both larval and pupal durations), as indicated in Table (1).
The fecundity and fertility were decreased as a result of treatment with Cascade. This decrease was negatively correlated with the concentration. On the other hand, the oviposition deterrent index (O.D.I) and percentages of sterility were positively correlated with the...


... middle of paper ...


...velopment especially in relation to nutrition and egg maturation (Maysa 2008). Acid phosphatase has received considerable attention in development studies due to its association with histolysis. This latter process is appreciable at the metamorphic molts of holometabolous species to which S. littoralis belongs.
The present study showed that the activities of α-esterase and β-esterase were reduced significantly in treated larvae as compared with control, the results showed that the reduction in activity was positively correlated to increase in dose and time post treatments these results are in agreement with (Abdel-Hafez et al. 1993a ; Salem et al. 1995 ; Al-Elimi and Eid 1998 and Maysa 2008).
Inhibition of non specific esterases enzymes could be suggests the reduction in fecundity and fertility, and they could be playing a role in the metamorphic inhibition.



Click the button above to view the complete essay, speech, term paper, or research paper

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »







This essay is 100% guaranteed.


Title Length Color Rating  
Vetarans Deserve to be Treated as Heroes Essays - ... Many of the people barley acknowledged the fact that these soldiers were returning from war and had put their lives on the line for us. Even today, returning war soldiers do not get received as they should. According to an article by The Huffington Post, “Most welcome-homes have been smaller-scale: hugs from families at military posts across the country, a somber commemoration by President Barack Obama at Fort Bragg in North Carolina” (Prois). Sure our veterans are received better now than after the Vietnam war, however; it is sad to know that championship sports teams are treated with better care than the care our veterans get once they have returned from war....   [tags: adequate care, government, public] 977 words
(2.8 pages)
Better Essays [preview]
Depression Cannot be Treated with Medication Essay - Depression cannot just be treated with medication. Saying depression is the common cold of mental illness does not take into account the various types and severity of depression. Some research says depression is due to low serotonin levels, but no test can measure the amount of serotonin in the brain. Depression medications such as SSRI’s can help to alleviate some symptoms of major depressive issues, but so can certain changes in ones’ lifestyle. Different types of depression require a variety of treatments, with mild or moderate, a change in lifestyle could be all that is needed, for severe depression, psychotherapy and medication may be necessary....   [tags: mental illness, aromatherapy, serotonin levels] 776 words
(2.2 pages)
Better Essays [preview]
Juveniles Treated Like Adults Essay - Everyday a vast number of brutal crimes occur somewhere in America. Teens as young as thirteen commit murder, rape, and burglary to an extent. What can be done about it. The best answer I can think of is to treat juveniles like adults. They have just as much responsibility and knowledge of their actions just as adults do, so they deserve the same punishment if they commit the same crime. Believe it or not, teens commit the same level of crimes that adults commit. Crimes will get even worse in the future if nothing is strictly done about the unnecessary violent actions....   [tags: crime, teens, punishment, fairness, justice]
:: 5 Works Cited
1331 words
(3.8 pages)
Strong Essays [preview]
Terrorists Should Be Treated as Prisoners of War Essay - Terrorism has been affecting the world for many years, but most especially since September 11th. Countless amounts of time and money have been spent; many soldiers and American resources have gone out try to stop the problem, but what happens to the terrorists after they have been captured. A basic level of humane treatment needs to be given to all people even those suspected of or convicted of terroristic offences. Using torture to attempt to find more information is not the most helpful or effective method that could be applied....   [tags: Treat Terrorists Like Enemy Combatants]
:: 19 Works Cited
2008 words
(5.7 pages)
Powerful Essays [preview]
Essay on In 2014, Women Still Are Not Treated Equally - In 1840, the roots of Seneca Falls women’s rights convention can be traced. Two women by the name of Lucretia Mott and Elizabeth Cady Stanton attended the World’s Anti-slavery Convention in London as delegates along with their husbands. It was ruled by the credentials committee that women were “constitutionally unfit for public and business meetings”. During these meetings, women were segregated from the men and were unable to speak and state their opinion. Men were the only ones allowed to speak....   [tags: Women’s Rights Movement]
:: 1 Works Cited
3310 words
(9.5 pages)
Strong Essays [preview]
Guinea Pigs are Treated Like Royalty Essay - Planet Earth is filled with many species, including the one that we call the “Animal” species. This is filled with many subspecies. Some subspecies are loved, such as cats, dogs, and hamsters, which we human species keep as pets. Other subspecies, such as spiders, mosquitos, and snakes, on the other hand, are not so loved, and they even strike fear into people. Animals come in all shapes and sizes. Earth has tall and skinny animals called giraffes, and it also has short and fat animals called pigs....   [tags: animals, species, rodents] 617 words
(1.8 pages)
Better Essays [preview]
Analysis of Leroi Jones' A Poem Some People Will Have To Understand Essay - Analysis of Leroi Jones' A Poem Some People Will Have To Understand              There is an implied threat in "A Poem Some People Will Have To Understand" by Leroi Jones. Ostensibly, there is no intimidation. The poem is confessional, even reflective; the theme is one of mutability and change. However, there is something frightening and ominous in Jones1 vision, which he creates through attention to word choice and structure. Jones' warning is immediately evident in the title through his manipulation of words....   [tags: Poem Some People Will Have To Understand] 1065 words
(3 pages)
Strong Essays [preview]
Anticancer Mechanism of Cardiac Natriuretic Peptides via Targeting the Ras-MEK 1/2-ERK 1/2 Kinase Cascade - Ras proteins play major roles in normal cell growth, malignant transformation and learning and memory (Denayer et al., 2008). The genes encoding Ras proteins were first identified as homologues of rodent sarcoma virus genes. In 1982 human DNA sequences homologous to the transforming oncogenes of the v-Harvey (HRAS) and Kirsten (KRAS) rat sarcoma virus were identified in DNA sequences derived from a human bladder and a human lung cancer cell line, respectively (Der et al., 1982). Since then findings have pointed to the important role of Ras genes as oncogenes and it soon became clear that encoded proteins were constitutively active due to point mutations in the Ras genes (Denayer et al., 2008...   [tags: Medical Science]
:: 20 Works Cited
1428 words
(4.1 pages)
Powerful Essays [preview]
Essay about How Should Prisoners of War be Treated? - How Should Prisoners of War be Treated. In an op-ed piece for the New York Times, entitled "George W. to George W.," Thomas Friedman writes about the treatment of prisoners in United States custody being held in Iraq and Afghanistan. Friedman writes in his "George W." piece that “We killed 26 of our prisoners of war. In 18 cases, people have been recommended for prosecution or action by their supervising agencies, and eight other cases are still under investigation.” Friedman goes on to write that the United States has been very lax when it comes to punishing those United States officials and officers in charge during the time that prisoners of war have been tortured and killed....   [tags: American Soldiers Violence Army Essays]
:: 14 Works Cited
3179 words
(9.1 pages)
Powerful Essays [preview]
How Lomax and Fellow Prisoners are Treated Essay - How Lomax and Fellow Prisoners are Treated In this essay I will be looking at ways in which Lomax conveys how he and his fellow prisoners are treated here in this passage from the book. To show evidence of this I will select quotes which show choices of form, style, vocabulary and narrative viewpoint. Overall I aim to highlight the ways in which the attitudes and values are conveyed to the reader. Lomax Perfectly describes his transition from a P.O.W camp to Outram Gail. 'What our captors were in fact doing was consigning us to a lower circle of hell'....   [tags: Prison Alan Lomax Essays] 665 words
(1.9 pages)
Good Essays [preview]