The actinopterygians comprise nearly one-half of all extant vertebrate species and are very important for human well-being. However, the phylogenetic relationships among certain groups within the actinopterygians are still uncertain, and debates about these relationships have continued for a long time. Along with the progress achieved in sequencing technologies, phylogenetic analyses based on m...

The Quintanilla la Ojada section (Basque-Cantabrian Region, northern Spain) has yielded two assemblages of Late Cretaceous vertebrates, deposited during the Maastrichtian in coastal environments and related to a transgressive lag at base Valdenoceda Formation. Numerous teeth Elasmobranchii Actinopterygii are most prevailing fossil material, although scarce marine reptiles (Mosasauridae) dinosau...

The acanthocephalan fauna of Iran is reported for the first time since the report of Pomphorhynchus perforator (von Linstow, 1908) Meyer, 1932 in 1964. The knowledge of the acanthocephalan biodiversity of Iran, with parasite-host and host-parasite checklists, is presented. The species of Acanthocephala are presented in alphabetical order, followed by the species of hosts, localities and referen...

Growth in body size is a key life-history trait that has coevolved and interlinked with maturation, maximum age, mortality, generation time, the intrinsic rate of population growth. parameters are therefore required inputs majority assessment models used conservation or fisheries management. However, because difficulties involved proper aging individuals, growth unknown for vast species. Here, ...

A copepod, Pseudanthessius chuukensis Uyeno, n. sp. (Cyclopoida: Pseudanthessiidae), is described based on the type specimen obtained from grouper Epinephelus (Actinopterygii: Perciformes: Serranidae) caught in Chuuk Lagoon (North Pacific Ocean), Federated States of Micronesia, North Ocean. The copepod differs its congeners following female characters: urosome 5-segmented; caudal rami are five ...

Materials and Methods Genome Size The haploid genome size (C-value, in pg) of 1461 ray-finned fish species (Actinopterygii) was downloaded from the Animal Genome Size Database (www.genomesize.com). Unless otherwise stated, comparisons of genome sizes are performed on the C-values, which can be converted to number of base pairs by the following: number of base pairs = C-value × 0.978 × 109. Seve...

Estimating appropriate sample sizes to measure species abundance and richness is a fundamental problem for most biodiversity research. In this study, we explore a method to measure sampling sufficiency based on haplotype diversity in the ray-finned fishes (Animalia: Chordata: Actinopterygii). To do this, we use linear regression and hypothesis testing methods on haplotype accumulation curves fr...

The relationship between the Chondrichthyes (cartilaginous fishes), the Actinopterygii (ray-finned fishes), and the piscine Sarcopterygii (lobe-finned fishes) and how the Tetrapoda (four-limbed terrestrial vertebrates) are related to these has been a contentious issue for more than a century. A general consensus about the relationship of these vertebrate clades has gradually emerged among morph...

This report describes a set of 21 polymerase chain reaction primers and amplification conditions developed to barcode practically any teleost fish species according to their mitochondrial cytochrome b and nuclear rhodopsin gene sequences. The method was successfully tested in more than 200 marine fish species comprising the main Actinopterygii family groups. When used in phylogenetic analyses, ...

This study aims to determine the diversity and potential of fish caught by fishermen at Pamayangsari auction, Tasikmalaya Regency. uses descriptive quantitative methods with survey techniques. Data collection was carried out using catch data from January 2020 October 2022 conditional direct observations for 2 weeks in auction Pamayangsari. The results showed that 58 species were identified Pama...