morph type
Recently Published Documents


TOTAL DOCUMENTS

6
(FIVE YEARS 2)

H-INDEX

3
(FIVE YEARS 0)

2022 ◽  
Vol 46 ◽  
pp. 1-16
Author(s):  
Hirusha Randimal Algewatta ◽  
Priyan Perera

The absence of robust species-specific methods to estimate the number of animals in seizures of pangolin scales is a major barrier to effective law enforcement. Therefore, studies focused on developing methods to establish accurate conversion parameters are a priority. This study proposes improved methods to estimate the number of pangolins in the illegal trade to inform law-enforcing authorities. Based on the observations of 25 specimens, Indian pangolins were on average found to possess 511 scales. Three morph-types of scales were identified: broad rhombic (n=411), elongated kite shape (n=69), and folded scales (n=31). The mean dry weight of the three-scale morph-types was 7.5 g, 4.9 g, and 6.2 g. Based on the average frequency and mean dry weight of each scale morph type, the species-specific dry weight of scales for Indian pangolins was 3.6 kg. Accordingly, we propose new and improved methods based on scale morph-type frequencies and species-specific dry weight of scales to estimate the number of Indian pangolins from quantities of scales. Their accuracy was compared with current methods, and the improved methods were found to be more accurate.


2019 ◽  
Vol 4 (5) ◽  

GalynaViktorovnaKhrushch plastic surgeon, maxillofacial surgeon, international candidat ASPS, Periorbital area is worthily considered as one of the most complicated regions in terms of correction of the age-related changes using injection techniques of medical aesthetics. According to the classification of I.I. Kolgunenko Russian (1974), tired morph type of age-related changes which is the most physiological type of aging, incorporates changes mainly focused in the middle third of the face, including in the periorbital area. These changes include the formation of grooves (tear trough, palpebromalar groove, nasojugal groove) (Figure 1), dark under-eye circles, mimic wrinkles formation, fat compartment displacement, change in mimic muscle tone, stretching of ligamentous structures, overhang of the upper eyelid.


Botany ◽  
2016 ◽  
Vol 94 (10) ◽  
pp. 983-992
Author(s):  
Jennine L.M. Pedersen ◽  
S. Ellen Macdonald ◽  
Scott E. Nielsen

Distylous species typically experience self-incompatibility with one morph often having partial self-compatibility. Small populations may therefore experience greater rates of selfing/intramorph crosses leading to skewed morph ratios and reduced seed production. For the distylous species Houstonia longifolia Gaertn. (“imperiled” at its northwestern range limit in Alberta), we examined whether small populations were morph-biased and whether seed production was affected by population size, local density, plant size, morph type, and surrounding morph ratio. For focal plants in several populations, we measured size (height, number of stems) and local density (1 m2) of pins and thrums, with the focal plants collected for seed counts. Population size was estimated from densities in systematically located quadrats in each population. Morph ratios were pin-biased in small populations but were even to slightly thrum-biased in large populations. The critical population size for maintaining an equal morph ratio was ∼726 plants. Seed production was most influenced by the interaction between morph type and surrounding morph ratio, which were themselves influenced by population size (Allee effect). Seed production increased for thrums but decreased for pins as the proportion of surrounding pins increased, suggesting strong incompatibility. These results provide guidance on population size and morph ratios for conservation actions.


2007 ◽  
Vol 44 (2) ◽  
pp. 70-75 ◽  
Author(s):  
N. Thomas ◽  
S. Teshale ◽  
B. Kumsa

AbstractA study was carried out to determine the prevalence of abomasal nematodes of sheep and goats slaughtered in Awassa town from January 2006 through June 2006 with special emphasis given to Haemonchus spp. and to characterize vulvar morphs of female Haemonchus worms. During the study period 180 abomasa of sheep and 132 abomasa of goats were examined. Three genera of nematodes were identified in both sheep and goats abomasa with overall prevalence of 91.1 % and 87.1 % respectively. The specific prevalence rates observed were 81.1 % for Haemonchus spp., 47.2 % for Trichostrongylus axei, and 19.4 % for Teladorsagia spp. in sheep and 76.5 % for Haemonchus spp., 39.4 % for T. axei and 20.5 % for Teladorsagia spp. in goats. Out of 653 female Haemonchus recovered from sheep, 37.8 % had a linguiform vulvar flap, 30 % knobbed and 35.4 % smooth vulvar morphs. Out of 448 female Haemonchus recovered from goats, 43.8 % had linguiform vulvar flaps, 27.2 % knobbed and 29 % smooth morph type. A total of 239 linguiform female Haemonchus from sheep were further classified in to 15.1 % linguiform A (LA), 17.5 % linguiform B (LB), 39.7 % linguiform C (LC) and 27.6 % linguiform I (LI) and similarly from goats 196 linguiform female Haemonchus were further classified into 11.2 % LA, 12.2 % LB, 44.9 % LC and 31.6 % LI. Similar findings were observed in both host species regarding the worm burden, prevalence of infection and morphological pattern of Haemonchus species. Generally a high infection rate with abomasal nematodes was observed in both sheep and goats of the study area.


1969 ◽  
Vol 47 (3) ◽  
pp. 283-288 ◽  
Author(s):  
J. E. Bardsley ◽  
R. Harmsen

The peripheral parasitaemia of the Trypanosoma rotatorium complex in the bullfrog (Rana catesbeiana) is markedly affected by temperature. Over the long term, high temperatures are always coincident with high peripheral parasitaemia and vice versa; over the short term, increases in temperature bring about a corresponding increase in parasite level, and vice versa. A distinct diurnal cyclicity in parasitaemic level is found for one morph (type D) at elevated temperatures (26 °C); no such cyclicity was apparent at low temperatures (10 °C). Other morphs did not display any cyclicity at either temperature. It is proposed that the control of peripheral parasitaemia is due to changes in the level of metabolic activity of the host.Natural selection will favor any behavioral or growth pattern among trypanosomes which results in an increased peripheral parasitaemia at times and under conditions of optimal host–vector contact. The present results suggest an optimal host–vector contact for basking frogs. The possibility of an insect vector is discussed.


Sign in / Sign up

Export Citation Format

Share Document