Morphology of Dragonflies

Lab Section 1 Wednesday 110-400 M. Moore Zoology Lab 1 Morphology of Dragonflies In analyzing the morphology of dragonflies by looking at two contrastive time periods and the piss levels, data was comprise to illustrate that soundbox sizing of it expertness be directly influenced by water levels. By looking at the mosquito hawk species Sympetrum vincinum during the 2001 drought and 2008 normal rainfall, the data showed that on that point was no statistical residual in abdomen reasonableness (p valuate 0. 20741). on that point was a statistical diversion in forewing continuance (p judge 0. 006), hindwing landing field (p value 0. 000164) and thorax depth (p value 0. 0001). The means provided from the different species showed that on that point was a small difference from 2001 to 2008 and that the 2008 data was small with the normal amount of rainfall conflicting to the 2001 draught.The Mean for 2001 of the Forewing distance (23. 30mm), Hindwing subject atomic numbe r 18a (169. 88mm2), thorax depth (6. 04mm), abdomen length (21. 08mm), were larger than 2008. The 2008 means are as follows, Forewing Length (22. 06mm), Hindwing Area (148. 61mm2), chest of drawers Depth (5. 25mm) and Abdomen Length (20. 0mm). In the call for fitness and body size in jump on odonates it was order that body size has an important role in the fitness of dragonflies and is directly related to their strength to reproduce and survive (Sokolovska, Rowe, and Johansson 2000). Through this study it was found that there was no statistical difference in the abdomen depth from 2001 and 2008 with varying water levels. This suggests that the dragonflies did not motley their abdomen size because that particular size was the one that trump out aided their fitness, not relying on water levels.Egg Laying in Petrels Successful versus Failed Eggs In the parity of the boffo junkies and the failed pelt, there was a statistical difference amongst them concerning the freaks le ngth, pretension and cumulus. This leads to idea that the failed ballock were not cared for as well as the successful orchis had been. For the equality of the successful versus the failed eggs, the egg length (p value 0. 01849), egg breadth (p value 0. 00057) and the egg mass (p value 0. 00057). In the study of forays Storm- Petrel done by Huntington et al. n 1996, they found that there may be various reasons why there are unsuccessful egg hatching with these birds. In the data abbreviation of the successful versus the failed eggs the reasons that there is a statistical difference between them may be because of nesting site, brooding time, or size of parental birds (Huntington et al. 1996). thither are many factors to contribute to the reasons why there is a statistical difference between the sizes of the successful versus failed eggs. This data proves that there is a significant difference between the egg sizes and this will lead to come on studies to gain more information. Egg Laying in Guillemots Inter- Year Effects The data found from the analysis of measuring the length and breadth of eggs from Guillemonts to see when the birds had better facsimile ability from the firstborn year of their nurture in comparison to their guerilla or third year. The data illustrated a statistical difference between the egg length and breadth from the first year to the secant or third year. The birds produced larger eggs in their first year of make in comparison to their second or third year breeding.The length comparison between first year and second or third year (p value 0. 00036) and the breadth comparison was (p value 0. 019112), which some(prenominal) exhibit a significant statistical difference. The egg size and shape varies on many different factors including the environment, the age of the young-bearing(prenominal) and when the eggs are laid (Butler and Buckley 2002). This analysis proves the point that egg size is change by the age of the female and that the first breeding season of the female produces the best eggs.Works Cited Butler, G. R. , Buckley, E. D. 2002. scurrilous Guillemot. The Birds of North America, No. 675. Huntington, E. C. , Butler, G. R. , and Mauck A. R. 1996. disinvests Storm- Petrel. The Birds of North America, No. 233. Sokolovska N. , Rowe L. , and Johansson F. 2000. Fitness and body size in mature odondates. Ecological Entomology, 25239-248. Table 3. lengthiness Variable recorded for male Sympetrum vincinum at dirty dog Stream in Franklin County (ME) in kinfolk 2001 and September 2008. Table 3. . structural variables recorded for male Sympetrum vincinum at Lemon Stream in Franklin County (ME) in September 2001 and September 2008. Table 6. Egg measurements poised on grand Island (Newfoundland, Canada) from nesting Leachs Storm-petrels in 1983 (from Butler, unpublished data). Table 9. Black Guillemot egg measurements collected on Great Duck Island (Hancock County, Maine) from banded adults in their inaugural and 2nd and 3rd breeding seasons 1991 and 1993 (Butler and Barkley 2002).