Iskanje po repozitoriju

A+ | A- | | SLO | ENG

Povzetek: High-speed camera (video files) and laser vibrometer (audio files) recordings of Cacopsylla pyrisuga males producing vibrational signals - a dataset accompanying the publication Polajnar J., Kvinikadze E., Harley A.W., Malenovský I. (2024) Wing buzzing as a mechanism for generating vibrational signals in psyllids (Hemiptera: Psylloidea). Insect Science. See the publication for details about the methodology used. The dataset additionaly includes tracked points at wing and abdomen tips from two videos, and an R script with instructions to read this data.
Ključne besede: biotremology, vibrational signals, jumping plant-lice, tremulation, data
Objavljeno v DiRROS: 27.10.2025; Ogledov: 219; Prenosov: 93
Povezava na datoteko
Gradivo ima več datotek! Več...

Povzetek: 1. Host abundance might favour the maintenance of a high phylogenetic diversity of some parasites via rapid transmission rates. Blood parasites of insular lizards represent a good model to test this hypothesis because these parasites can be particularly prevalent in islands and host lizards highly abundant. 2. We applied deep amplicon sequencing and analysed environmental predictors of blood parasite prevalence and phylogenetic diversity in the endemic lizard Gallotia galloti across 24 localities on Tenerife, an island in the Canary archipelago that has experienced increasing warming and drought in recent years. 3. Parasite prevalence assessed by microscopy was over 94% and a higher proportion of infected lizards was found in warmer and drier locations. A total of 33 different 18s rRNA parasite haplotype were identified and the phylogenetic analyses indicated that they belong to two genera of Adeleorina (Apicomplexa: Coccidia), with Karyolysus as the dominant genus. The most important predictor of between-locality variation in parasite phylogenetic diversity was the abundance of lizard hosts. 4. A combination of climatic and host demographic factors associated with an insular syndrome may be favouring a rapid transmission of blood parasites among lizards on Tenerife, which may favour the maintenance of a high phylogenetic diversity of parasites.
Ključne besede: lizards, parasites, genetics, biogeography, habitat, data
Objavljeno v DiRROS: 27.10.2025; Ogledov: 209; Prenosov: 131
Celotno besedilo (39,45 KB)
Gradivo ima več datotek! Več...

Ključne besede: raziskovanje, raziskovalne organizacije, razvoj, Valovi znanja, Znanstveno-raziskovalno središče Koper
Objavljeno v DiRROS: 27.10.2025; Ogledov: 149; Prenosov: 53
Celotno besedilo (341,38 KB)

Povzetek: The dataset is used in the manuscript "Nina Serén, Rodrigo Megía-Palma, Tatjana Simčič, Miha Krofel, Fabio Maria Guarino, Catarina Pinho, Anamarija Žagar, Miguel A. Carretero. Functional responses in a lizard along a 3.5 km altitudinal gradient. Journal of Biogeography (under review)." The dataset consists of measurements of individual lizards of the species Gallotia galloti, each tagged with a unique CODE. Data include year of sampling, population name, exact elevation (in meters above sea level) and approximate elevation (rounded to the nearest hundred, in meters), and sex. Measurements were as follows: Snout Vent Length (in millimeters), Mass (in grams), AGE_Consensus (in years), Relative Telomere Length, PMA(29ºC, 33 ºC and 37ºC) (Potential metabolic activity measured at experimental conditions of 29˚C, 33ºC and 37ºC, respectively,in µLO2/mg prot/h), Catalase (in relative units U/mg protein), EWLa (accumulated evaporative water loss (in grams) and Temperature_8AM-5PM (measurements of cloacal temperature at hourly intervals starting at 8AM and ending at 5PM).
Ključne besede: lizards, ecophysiology, oxydative stress, telomeres, climate change, data
Objavljeno v DiRROS: 27.10.2025; Ogledov: 256; Prenosov: 131
Celotno besedilo (19,71 KB)
Gradivo ima več datotek! Več...

Povzetek: Squamate reptiles are central for studying phenotypic correlates of evolutionary transitions from oviparity to viviparity because these transitions are numerous, with many of them being recent. Several models of life-history theory predict that viviparity is associated with increased female size, and thus more female-biased sexual size dimorphism (SSD). Yet the corresponding empirical evidence is overall weak and inconsistent. The lizard Zootoca vivipara, which occupies a major part of Northern Eurasia and includes four viviparous and two non-sister oviparous lineages, represents an excellent model for testing these predictions. We analysed how sex-specific body size and SSD is associated with parity mode, using body length data for nearly 14,000 adult individuals from 97 geographically distinct populations, which cover almost the entire species’ range and represent all six lineages. Our analyses controlled for lineage identity, climatic seasonality (the strongest predictor of geographic body size variation in previous studies of this species), and several aspects of data heterogeneity. Parity mode, lineage, and seasonality are significantly associated with female size and SSD; the first two predictors accounted for 14–26% of the total variation each, while seasonality explained 5–7%. Viviparous populations exhibited a larger female size than oviparous populations, with no concomitant differences in male size. Variation of male size was overall low and poorly explained by our predictors. Albeit fully expected from theory, the strong female bias of the body size differences between oviparous and viviparous populations found in Z. vivipara is not evident from available data on three other lizard systems of closely related lineages differing in parity mode. We confront this pattern with the data on female reproductive traits in the considered systems and the frequencies of evolutionary changes of parity mode in the corresponding lizard families and speculate why the life-history correlates of live-bearing in Z. vivipara are distinct. Comparing conspecific populations, our study provides the most direct evidence for the predicted effect of parity mode on adult body size but also demonstrates that the revealed pattern may not be general. This might explain why across squamates, viviparity is only weakly associated with larger size.
Ključne besede: lizards, morphology, viviparity, sexual dimorphism, climate change, data
Objavljeno v DiRROS: 27.10.2025; Ogledov: 219; Prenosov: 120
Celotno besedilo (5,14 MB)
Gradivo ima več datotek! Več...