Telomere length (TL) has been proposed as a marker of mitotic cell age and as a general index of human organismic aging. Short absolute leukocyte telomere length has been linked to cardiovascular-related morbidity and mortality. Our aim was to test whether the rate of change in leukocyte TL is related to mortality in a healthy elderly cohort. We examined a subsample of 236 randomly selected Cau...

In the current investigation, karyotype analysis and chromosome characteristics of six populations of Calendula officinalis L.(pot marigold) from Iran are studied. Results showed that all populations were diploid (2n= 2x= 32), and had symmetrical karyotypes composing mainly of metacentric and submetacentric chromosomes. The mean chromosome length ranged from 1.05 in Karaj to 1.50 μm in...

cytotaxonomy is a branch of cytogenetics, devoted to the comparative study of karyological features for systematic and evolutionary purposes. surely, awareness of chromosomal characters increases our knowledge in different fields of studies. in this study, cytogenetic analyses were performed in 92 mus musculus specimens from 26 localities in iran. cytogenetic characteristics of the house mouse,...

We investigated the effects of embryonic temperature (ET) treatments (22, 26 and 31 degrees C) on the life-time recruitment of fast myotomal muscle fibres in zebrafish Danio rerio L. reared at 26/27 degrees C from hatching. Fast muscle fibres were produced until 25 mm total length (TL) at 22 degrees C ET, 28 mm TL at 26 degrees C ET and 23 mm TL at 31 degrees C ET. The final fibre number (FFN) ...

Abstract Telomeres are comprised of G-rich nucleotide sequences (5’-TTAGGG-3’) at the chromosome termini that responsible for protecting chromosomes; however, attrition these has been observed due to aging and stress. The purpose this study was compare telomere length (TL) in control prenatally stressed (PNS) calves. Mature Brahman cows inseminated a single sire 2018 were assigned be either Con...

Groups of Rainbow smelt were observed spawning in the first riffle in Mohican Canyon upstream of Otsego Lake. Adult smelt were collected with a shore seine on 22 April 2001. Sampled fish (n=17) had an average length of 176.8 mm total length (TL) and weight of 34.2 g. Despite these observations, no larval, juvenile or adult smelt were collected in any trawling or gill netting activities in Otseg...

Owing to poorly mineralising structures, ageing deep-water elasmobranchs requires unconventional techniques. The aim of the present study was develop an method for goblin shark Mitsukurina owstoni (Jordan, 1898) using Alcian blue staining vertebral column. One centrum from a male individual measuring 315.2-cm total length (TL) aged with minimum age 27 years. Using Bayesian von Bertalanffy growt...

Hammerhead sharks are represented by four species in India's marine fishery – Sphyrna lewini, mokarran, zygaena and Eusphyra blochii. This paper describes the hammerhead shark India during 2007–2018 summarizes observations on biology of S. lewini exploited along Indian coast. caught trawl nets, gillnets, seines line gear, mostly as bycatch. Annual average landing 2007–18 was 639 t, with a low 2...

The study was carried out to evaluate the growth rate of broad-nosed caiman, Caiman latirostris hatchlings, fed on four animal protein diets: (a) dead poultry from a poultry farm; (b) dead piglet from nursery and farrowing house in a swine farm; (c) whole tilapia (Tilapia rendalli e Oreochromis niloticus); and (d) a balanced mixture of a, b, and c sources. Sixteen seven-month old caimans, avera...