جستجوی مقالات مرتبط با کلیدواژه « phylogeny » در نشریات گروه « محیط زیست »

The Red Palm Weevil (Rhynchophorus ferrugineus) is a global threat to palm trees. Our study, which delves into the sexual dimorphism and morphometric variations among Red Palm Weevils in the Khairpur district of Sindh, Pakistan, has the potential to influence the development of effective and sustainable management strategies significantly. We collected 210 adult Red Palm Weevils, both males and females, from various palm tree habitats in Khairpur. We measured different body parts using calipers and compared the results between the sexes. The findings revealed clear sexual dimorphism in Red Palm Weevils of Khairpur, with females being larger. These morphometric variations provide valuable insights into the sexual dimorphism and physical characteristics of Red Palm Weevils in Khairpur, Sindh. This information can be directly applied in developing sex-specific control strategies, such as targeted trapping or biological control methods, to mitigate the impact of Red Palm Weevils on palm tree populations in the region. Our research contributes to a comprehensive understanding of the species biology and aids in developing effective and sustainable management strategies for this economically significant pest.

Long-tailed macaques have been roaming near Tenaga National Berhad Bukit Selambau Solar (TBSS) causing human–macaque conflicts. This study reveals the social organization and genetic variation of these macaques. Macaques’ groups were determined via direct observation and closed-circuit television. Genomic DNA from 29 fecal samples were extracted and proceeded with amplification of the D-loop region of mitochondrial DNA. There are four main groups of primates at TBSS. Some members of the Kuil group and the Pekan group shared haplotype 1, forming a fission-fusion society. This finding can be used for TNB in mitigation plan involving human–macaque conflict.

Despite the knowledge of the evolution of snakes worldwide, snake phylogeny requires a more detailed approach in South India. Molecular taxonomic approaches using DNA barcoding are a molecular tool frequently in species identification as well as studies of phylogenetics. Here, a non-invasive genetic sampling method using skin exuviates was used. This method is often overlooked for molecular studies of reptiles. We isolated DNA using a non-toxic method from skin exuviates collected from Chennai Snake Park and screened for the cytochrome oxidase subunit I (COI) region of mitochondria. Samples that were amplified successfully were barcoded. A total of seven species of snakes were identified which belonged to 5 families. We combined and compared sequences of these seven-snake species from other countries to construct a phylogenetic tree and examined the genetic distance within species and families. This depiction and analysis showed a high degree of genetic variability intra-specifically between the South Indian samples to the samples from other parts of the world. This study documents how skin exuviates of snakes and the polymerase chain reaction of the COI region can be used for DNA barcoding and estimating phylogenetic relationships among snake species. Overall, this method is very versatile, inexpensive, and non-toxic which can help in understanding the evolution and phylogeny of snakes to formulate proper strategies for the conservation of snake species.

Lepus nigricollis is a small mammal species mainly found in South Asia. The phylogenetic position of the Sri Lankan wild hare(Lepus nigricollis singhala)is yet to be determined. Therefore, the mitochondrial DNA D-loopof three Sri Lankan wild hare samples wasstudied. Phylogenetic analysesrevealed that Sri Lankan wild hareclusteredas a basal separate branch consistent with the phylogenetic position of other isolated populations. The limitationof the current data did not permit us to make any further conclusions; therefore, more research evidence is still required.

Acanthodactylus Wiegmann, 1834 is one of the most diverse and widespread lizard genus in the Palearctic realm. Here, we describe a new species, - Acanthodactylus ilgazi sp. nov. - from the Anatolian Peninsula. This new species ranges approximately 250 km north from the closest population of this genus in Turkey. Compared to other fringe-fingered lizards, the new species is phylogenetically close to A. robustus, A. tristrami and A. orientalis but it has some distinct morphological characteristics: reddish coloration under the tail, a sharp white or grayish stripe in the middle of the dorsum, and four plates in a row on the 4th finger. Moreover, phylogenetic molecular data, based on cyt b gene fragment, verifies that the new species is phylogenetically a member of the tristrami species group with 13.03%, 17.35% and 20.56 genetic distance respectively from A. orientalis, A. tristrami and A. robustus. Lastly, the known range of this species, located in Yazıhan, Malatya in Eastern Anatolia, is restricted by a dam, thus habitat loss endangers its continuity. Therefore, the conservation status of this species should be assessed immediately