scholarly journals Exploratory and territorial behavior in a reintroduced population of Iberian lynx

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Carmen Rueda ◽  
José Jiménez ◽  
María Jesús Palacios ◽  
Antoni Margalida
Keyword(s):  
Spatial Data ◽  
Inverse Relationship ◽  
Natural Populations ◽  
Territorial Behavior ◽  
Iberian Lynx ◽  
Lynx Pardinus ◽  
High Quality ◽  
Males And Females ◽  
Reintroduced Population ◽  
Exploratory Movements

AbstractIn reintroduction projects, an analysis of dispersal, exploratory movements and territorial behavior of the species concerned offers valuable information on the adaptive management of threatened species and provides a basis for the management of future reintroductions. This is the case of the Iberian lynx (Lynx pardinus) an endemic and endangered species reintroduced in Extremadura (Spain) in 2014. We analysed spatial data from 32 individuals just after their reintroduction. Our findings show exploratory movements sufficient to colonise and connect population nuclei within a radius of about 50 km of the reintroduction area. No significant differences were found in the exploratory movements capacity or in any directionality of males and females. Our results showed an effect of sex on the sizes of the territories established, as well as an inverse relationship between them and the time elapsed since release. No effects of rabbit abundance and lynx density on the size of territories are occurring during the early stages of reintroduction. On average, the territories of reintroduced individuals were less stable than those previously described in natural populations. Findings indicate that the reintroduced population has successfully been established but it takes more than 5 years to stabilize the territories in the area. Exploratory movements of reintroduced lynx can be large and in any direction, even when there is still a lot of high quality habitat available, which should be taken into account when reintroducing species, especially terrestrial carnivores.

Current Status Of the Iberian Lynx (Lynx pardinus) in Eastern Sierra Morena, Southern Spain

2010 ◽  
Vol 6 (3) ◽  
Author(s):  
José María Gil-Sánchez ◽  
Miguel Angel Simón ◽  
Rafael Cadenas ◽  
José Bueno ◽  
Manuel Moral ◽  
...  
Keyword(s):  
Southern Spain ◽  
Current Status ◽  
Lynx Lynx ◽  
Iberian Lynx ◽  
Lynx Pardinus ◽  
Sierra Morena

scholarly journals No sex differences in learning in wild bumblebees

2021 ◽  
Author(s):  
Felicity Muth ◽  
Amber D Tripodi ◽  
Rene Bonilla ◽  
James P Strange ◽  
Anne S Leonard
Keyword(s):  
Sex Differences ◽  
Associative Learning ◽  
Sierra Nevada ◽  
Comparative Cognition ◽  
Natural Populations ◽  
Interspecific Variation ◽  
Learning Task ◽  
Learning Ability ◽  
Learning Performance ◽  
Males And Females

Abstract Females and males often face different sources of selection, resulting in dimorphism in morphological, physiological, and even cognitive traits. Sex differences are often studied in respect to spatial cognition, yet the different ecological roles of males and females might shape cognition in multiple ways. For example, in dietary generalist bumblebees (Bombus), the ability to learn associations is critical to female workers, who face informationally rich foraging scenarios as they collect nectar and pollen from thousands of flowers over a period of weeks to months to feed the colony. While male bumblebees likely need to learn associations as well, they only forage for themselves while searching for potential mates. It is thus less clear whether foraging males would benefit from the same associative learning performance as foraging females. In this system, as in others, cognitive performance is typically studied in lab-reared animals under captive conditions, which may not be representative of patterns in the wild. In the first test of sex and species differences in cognition using wild bumblebees, we compared the performance of Bombus vancouverensis nearcticus (formerly bifarius) and Bombus vosnesenskii of both sexes on an associative learning task at Sierra Nevada (CA) field sites. Across both species, we found that males and females did not differ in their ability to learn, although males were slower to respond to the sucrose reward. These results offer the first evidence from natural populations that male bumblebees may be equally as able to learn associations as females, supporting findings from captive colonies of commercial bees. The observed interspecific variation in learning ability opens the door to using the Bombus system to test hypotheses about comparative cognition.

scholarly journals Detection ofFeline Leukemia Virusin the Endangered Iberian Lynx (Lynx Pardinus)

2008 ◽  
Vol 20 (3) ◽  
pp. 381-385 ◽  
Author(s):  
Inés Luaces ◽  
Ana Doménech ◽  
Marino García-Montijano ◽  
Victorio M. Collado ◽  
Celia Sónchez ◽  
...  
Keyword(s):  
Lynx Lynx ◽  
Iberian Lynx ◽  
Lynx Pardinus

Helminth parasites of the endangered Iberian lynx (Lynx pardinus) and sympatric carnivores

2007 ◽  
Vol 81 (4) ◽  
pp. 377-380 ◽  
Author(s):  
Javier Millán ◽  
Joan Carles Casanova
Keyword(s):  
Lynx Lynx ◽  
Helminth Parasites ◽  
Toxocara Cati ◽  
Iberian Lynx ◽  
Lynx Pardinus ◽  
Feral Cats ◽  
Sierra Morena ◽  
Sympatric Carnivores ◽  
Adult Cats ◽  
Herpestes Ichneumon

AbstractFive critically endangered Iberian lynxes (Lynx pardinus) and 35 other sympatric carnivores (19 feral catsFelis catus, 12 Egyptian mongoosesHerpestes ichneumon, and 4 common genetsGenetta genetta) were analysed for helminths in Sierra Morena and Doñana area (southern Spain).Ancylostoma tubaeforme, which was believed to be harmful for lynx cubs according to a previous study, was present in the only lynx and in 53% of cats analysed in Doñana (80% in adult cats). Other species shared in both areas wereToxocara cati(1 lynx, 31% of cats),Joyeuxiella pasqualei(1 lynx, 21% of cats) andMesocestoidessp. (2 lynxes, 5% of cats). Only one mongoose was parasitized, harbouring larvae of two acantocephalan species not previously reported in the Iberian peninsula (Centrorhynchus(Sphaerirostris)lanceaandCentrorhynchus(Longirostris)undulatus). Feral cats may be a reservoir for hookworms and other helminths affecting the Iberian lynx. In contrast, mongooses and genets may not play a role in the epidemiology of these species.

scholarly journals Former range and decline of the Iberian lynx (Lynx pardinus) reconstructed using verified records

2011 ◽  
Vol 92 (5) ◽  
pp. 1081-1090 ◽  
Author(s):  
Jose María Gil-Sánchez ◽  
Emil B. McCain
Keyword(s):  
Lynx Lynx ◽  
Iberian Lynx ◽  
Lynx Pardinus

scholarly journals Membranous glomerulonephritis in the Iberian lynx (Lynx pardinus)

2008 ◽  
Vol 121 (1-2) ◽  
pp. 34-43 ◽  
Author(s):  
Ma Ángeles Jiménez ◽  
Belén Sánchez ◽  
Ma Dolores Pérez Alenza ◽  
Pilar García ◽  
Jose Vicente López ◽  
...  
Keyword(s):  
Membranous Glomerulonephritis ◽  
Lynx Lynx ◽  
Iberian Lynx ◽  
Lynx Pardinus

scholarly journals Lightweight males of Podisus nigrispinus (Heteroptera: Pentatomidae) neglect lightweight females due low reproductive fitness

2016 ◽  
Vol 77 (2) ◽  
pp. 267-276 ◽  
Author(s):  
A. I. A. Pereira ◽  
R. B. Silva ◽  
W. S. Tavares ◽  
J. B. Malaquias ◽  
J. C. Zanuncio
Keyword(s):  
Stink Bugs ◽  
High Quality ◽  
Gossypium Hirsutum L ◽  
Nymphal Stage ◽  
Male And Female ◽  
Food Shortages ◽  
Quality Diet ◽  
Males And Females ◽  
Heteroptera Pentatomidae ◽  
Coleoptera Tenebrionidae

Abstract Sexual choice by male stink bugs is important because females that experience food shortages lay fewer eggs with lower viability compared with well-fed females. In this study, we investigated whether Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) males fed with a low-quality diet during its nymphal stage show selectivity for sexual partners resulting in high-quality progeny. Lightweight males and females were obtained from nymphs fed weekly with Tenebrio molitor L. (Coleoptera: Tenebrionidae) pupae. By contrast, heavyweight males and females were fed three times a week and received an extra nutritional source: cotton leaves, Gossypium hirsutum L. (Malvaceae). Lightweight males preferred to mate with heavy females (77.78 ± 14.69%), whereas heavyweight males did not discriminated between light or heavyweight females. Females mated with lightweight males showed similar levels of reproduction to those mated with heavyweight males. The results provide an indication of the importance of male and female body weight for sexual selection in Asopinae stink bugs.

scholarly journals Population-scale long-read sequencing uncovers transposable elements contributing to gene expression variation and associated with adaptive signatures in Drosophila melanogaster

2021 ◽  
Author(s):  
Gabriel Rech ◽  
Santiago Radio ◽  
Sara Guirao-Rico ◽  
Laura Aguilera ◽  
Vivien Horvath ◽  
...  
Keyword(s):  
Gene Expression ◽  
Genetic Variation ◽  
Transposable Elements ◽  
Natural Populations ◽  
Gene Expression Variation ◽  
High Quality ◽  
Expression Variation ◽  
Climatic Regions ◽  
Genomic Studies ◽  
Reference Genomes

High quality reference genomes are crucial to understanding genome function, structure and evolution. The availability of reference genomes has allowed us to start inferring the role of genetic variation in biology, disease, and biodiversity conservation. However, analyses across organisms demonstrate that a single reference genome is not enough to capture the global genetic diversity present in populations. In this work, we generated 32 high-quality reference genomes for the well-known model species D. melanogaster and focused on the identification and analysis of transposable element variation as they are the most common type of structural variant. We showed that integrating the genetic variation across natural populations from five climatic regions increases the number of detected insertions by 58%. Moreover, 26% to 57% of the insertions identified using long-reads were missed by short-reads methods. We also identified hundreds of transposable elements associated with gene expression variation and new TE variants likely to contribute to adaptive evolution in this species. Our results highlight the importance of incorporating the genetic variation present in natural populations to genomic studies, which is essential if we are to understand how genomes function and evolve.

scholarly journals Population and reproductive traits of a freshwater amphipod (Crustacea, Peracarida, Hyalellidae) from northwest of the state of Rio Grande do Sul, Brazil

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Daniela da Silva Castiglioni ◽  
Marcio Limberger ◽  
Vanessa da Silva Castro ◽  
Francieli Ubessi
Keyword(s):  
No Reduction ◽  
Natural Populations ◽  
Reproductive Traits ◽  
Bimodal Distribution ◽  
Southern Brazil ◽  
Natural Pond ◽  
Males And Females ◽  
The Mean ◽  
Anthropic Influence ◽  
Almost All

Abstract The study of population and reproductive traits provides information about the ecological structure of natural populations. This study aimed to characterize dynamics and reproductive traits of Hyalella palmeirensis from a natural pond from southern Brazil. The amphipods were sampled monthly (August 2012 to July 2013) by a person with the aid of a hand net for 20 minutes. Ovigerous females and pre-copulatory pairs were individualized in the field. A total of 12,325 individuals were sampled, being 1,421 males, 6,983 females (including 215 ovigerous females) and 3,921 juveniles. Paired and unpaired males were significantly greater in size than females. There was a positive correlation between body size (CL) of paired males and females. Males and females showed bimodal distribution. Total sex ratio favored females, and these were more frequent in almost all months. Ovigerous females and precopulatory pairs were found throughout the year, but with high frequency in winter and autumn, respectively, characterizing a seasonal reproduction. Juveniles were sampled throughout the year, with greater intensity in the spring. The mean fecundity was 19.6 ± 4.34 eggs. No reduction in the number of eggs was observed during embryonic development. The results observed in H. palmeirensis demonstrate that this species has a population and reproductive dynamics very similar to other species of Hyalella already analyzed in southern Brazil. Moreover, it can be seen that although the H. palmeirensis occurs in an environment with anthropic influence (soy cultivation,) the population is managing to remain in the area, with reproduction and recruitment in most months of year.

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