نتایج جستجو برای: allometric characteristics
تعداد نتایج: 663433 فیلتر نتایج به سال:
Allometric morphogenesis is the generation of form or pattern as a result of differential growth according to power-law relationships among the elements of a complex system. This phenomenon has been noted in a variety of fields for many years, in some cases for centuries, and yet it has never been related to the underlying determinants of the systems. By starting with fundamental properties of ...
Oriental shrimp is conexotis species that widely distributed in northern Iran. This study was conducted to determine population dynamic characteristics of this species based on Its specimen in Golestan dam lake from February to September 2016. Sex ration was unbalanced in favorite of females (1 : 1.88). Total length and weight ranged from 16.06 to 85.01 mm and 0.04 to 6.75 gr respectively. The...
Regarding the importance of studying inland water fishes specially the fish living in qanats, some morphology characteristics, length-weight relationship and growth type of Turkmenian loach Paraschistura sargadensis living in Aran qanat, Baft city were assessed by standard protocols. Range of total length was 25.1-51.38 mm, standard length was 20.65-43.10 mm, fork length was 23.41-46.85 mm, bod...
A new genus and species, Megalara garuda is described from Sulawesi (Indonesia). The new species is one the largest known members of the crabronid subfamily Larrinae. It has a unique suite of putatively apomorphic morphological characters and is most closely related to the genus Paraliris. We found indications of a significant allometric variation in body size and mandibular length and shape in...
Hatchling lizards (Sceloporus occidentalis) from a southern population are large and have high locomotor performance (speed and stamina) relative to hatchlings from northern populations. In order to determine whether differences in performance are an allometric consequence of interpopulation differences in size, yolk was removed from southern eggs, thereby producing miniaturized hatchlings equi...
Length weight relationship and other allometric relationships were studied for shortneck clam Paphia malabarica. Lengthweight and total weight-flesh weight relationship in males and females were significantly different (p <0.01). The rate of growth in all other relationship studied were not significantly different between sexes. In lengthweight relationship it showed isometric growth and in len...
Dear Editor, I read with interest the paper by Chia and Aziz.1 Using allometric scaling, the authors adjusted peak oxygen uptake (VO2max) for the confounding influence of body mass and found that mass exponents differed markedly for male and female athletes. I believe the mass exponent generated for the female athletes is the suspect. In the first place, Chia regressed VO2max on body mass (Fig....
Present study describes the length-weight (LWR) and length-length (LLR) relationships of a freshwater catfish Eutropiichthyes vacha Hamilton from Indus River, Sindh, Pakistan. A total of 281 specimen of E. vacha were collected from fisherman?s catch from February 2005 to January 2006, are used for this study. The parameters a and b of the length-weight relationship were calculated as W= aLb are...
We present a preliminary attempt at applying an Allometric Trophic Network (ATN) model to single-season population data from agricultural fields. We describe the population dynamics of Rhopalosiphum padi, an aphid pest species, using predator-prey interactions that depend on the relative body masses of species in the food web. Using simple statistical assumptions, we formulate an inverse proble...
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