The newcomer takes it all: the invader Texas citrus mite, Eutetranychus banksi (Acari: Tetranychidae), displaces the resident relatives in citrus agrosystems

[EN] Many studies have emphasized the importance of interspecific competition in shaping natural ecosystem communities. In contrast, few investigations have explored the role of competition in agricultural environments after the arrival of an invasive pest species. We evaluated the ecological impact produced by the invasive Texas citrus mite, Eutetranychus banksi (McGregor), on the resident spider mites Panonychus citri (McGregor) and Eutetranychus orientalis (Klein) on the main citrus crop area in Eastern Spain. Since its arrival in 2013, E. banksi has become the most common and abundant spider mite on citrus, apparently leading to a reduction in the presence and geographic range of the other related species. Competitive relationships were detected between E. banksi-E. orientalis and E. banksi-P. citri pairs using co-occurrence analysis. Furthermore, generalized linear model analysis showed that the probability of finding E. orientalis or P. citri decreases with increasing E. banksi density and vice versa. Principal component analysis and permutational multivariate analysis of variance found competition between these two pairs, and also between the E. orientalis-P. citri pair. Redundancy and variation partitioning analysis revealed how the geographic distribution of the three spider mites is not caused by the environmental conditions, but it is strongly influenced by their colonization history and competitive relationships, since the areas with the highest density of the three species are related to their place of first detection, and do not coincide geographically. Finally, the mechanisms that may be involved in the competitive displacement and the possible future scenarios are discussed.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This research was supported by a predoctoral Grant (ACIF/2017/047 to S. Lopez-Olmos from Generalitat Valenciana) and the Pest Control Collaboration Project S7296000 between the Polytechnic University of Valencia (UPV) and the Generalitat Valenciana.López-Olmos, S.; Ferragut Pérez, FJ. (2023). The newcomer takes it all: the invader Texas citrus mite, Eutetranychus banksi (Acari: Tetranychidae), displaces the resident relatives in citrus agrosystems. Biological Invasions. 25:3171-3192. https://doi.org/10.1007/s10530-023-03099-z317131922

Damage and spatiotemporal dynamics of the Ngaio flat mite, Brevipalpus ferraguti (Trombidiformes: Tenuipalpidae), with observations on the development of the female insemination system

[EN] We studied the Ngaio flat mite, Brevipalpus ferraguti Ochoa & Beard, on Myoporum laetum (Scrophulariaceae), a common introduced plant used as hedgerows in gardens and green areas of the Mediterranean, where the mite causes considerable damage. We first describe the damage, and then the patterns of mite seasonal abundance and spatial distribution. Finally, we address the development of the female insemination system at the population level. Damage occurs on both sides of the leaves, starting with a uniform stippling and bronzing and ending in the leaves drying out and extensive defoliation that coincides with summer. Mite population peaked between June and August, maintained moderate levels in autumn and winter and reached its lowest density in early spring. Active motile immatures and eggs were present throughout the year. Females and motile immature forms were more abundant on the abaxial (lower) leaf surface, but eggs were deposited on both surfaces indistinctly, suggesting that females actively move to the adaxial (upper) surface in summer to oviposit. All the developmental stages were aggregated on the leaves throughout the year regardless of their population density. Our study suggests that a binomial or presenceabsence sampling, examining only the number of females on the abaxial surface, can accurately estimate the total mite density levels. Only 23.5% of females possessed a fully developed spermatheca, whereas in 76.5% of the cases the seminal receptacle was not present or not developed. Females with a complete spermatheca were less abundant in summer. Average temperatures and host plant species affected the occurrence of this reproductive structure.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.Escobar-Garcia, HA.; Ferragut Pérez, FJ. (2022). Damage and spatiotemporal dynamics of the Ngaio flat mite, Brevipalpus ferraguti (Trombidiformes: Tenuipalpidae), with observations on the development of the female insemination system. Experimental and Applied Acarology. 86(1):73-90. https://doi.org/10.1007/s10493-021-00670-y739086

A class of polynomial planar vector fields with polynomial first integral

We give an algorithm for deciding whether a planar polynomial differential system has a first integral which factorizes as a product of defining polynomials of curves with only one place at infinity. In the affirmative case, our algorithm computes a minimal first integral. In addition, we solve the Poincaré problem for the class of systems which admit a polynomial first integral as above in the sense that the degree of the minimal first integral can be computed from the reduction of singularities of the corresponding vector field.The first author is partially supported by the MINECO/FEDER grant MTM2013-40998-P. The second and third authors are partially supported by the Spanish Ministry of Economy MTM2012-36917-C03-03 and Universitat Jaume I P1-1B2012-04 grants.Ferragut, A.; Galindo Pastor, C.; Monserrat Delpalillo, FJ. (2015). A class of polynomial planar vector fields with polynomial first integral. Journal of Mathematical Analysis and Applications. 430(1):354-380. https://doi.org/10.1016/j.jmaa.2015.04.062S354380430

Comparación de indicadores morfológicos y de tiempo de entrenamiento semanal en equipos de waterpolo de diferentes niveles competitivos

We aimed to describe and compare the general morphological, somatotype and training background characteristics of Iberian waterpolo players (22 Portuguese and 22 Spanish National Teams players) considering their playing positions. The International Working Group of Kinanthropometry guidelines was herein followed, and a somatochart was obtained through specific software (Somatotype, Calculation and Analysis. (c)2001 SWEAT technologies). Spanish players train more hours per week (22.8 ±9.5 vs.12.2 ±5.6), are taller (187.4 cm ±6.6 vs.180.3 cm ±5.1), heavier (89.2 kg ±11.6 vs.79.1 kg ±10.0), show higher arm span (195.7 cm ±8.5 vs.185.2 cm ±7.4) and muscle mass percentage (49.0% ± 1.8 vs.46.0% ±6.0), and tend to be more mesomorphic (5.19 ±1.27 vs.4.26 ±1.32) than the Portuguese players. Concerning field positions, Spanish center forward players train more hours per week than the Portuguese (20.2 ±9.1 vs.12.2 ±3.8) and show higher arm span (204.4 cm ±7.3 vs.184.0 cm ±6.5). Spanish goal keepers and outside players show higher muscle mass percentage (49.8% ±1.5 vs.42.2% ±5.2 and 49.4% ±1.5 vs.45.5% ±4.6, respectively) than the Portuguese players. These evidences should be taken into account for the improvement of waterpolo sport.O presente estudo objetivou descrever e comparar a morfologia geral, o somatótipo e horas de treino de jogadores Ibéricos de selecções nacionais de polo aquático (22 portugueses e 22 espanhóis) e compará-los quanto às posições de jogo. Utilizou-se um software específico para o desenho da somatocarta (Somatotype, Calculation and Analysis,(c)2001 SWEAT technologies). Os jogadores espanhóis, quando comparados com os portugueses, treinam mais horas por semana (22,8 ±9,5 vs.12,2 ±5,6), são mais altos (187,4 cm ±6,6 vs.180,3 cm ±5,1), mais pesados (89,2 kg ±11,6 vs.79,1 kg ±10,0), apresentam maior envergadura (195,7 cm ±8,5 vs. 185,2 cm ±7,4), percentagem de massa muscular (49,0% ±1,8 vs. 46,0% ±6,0) e tendem a ser mais mesomorfos (5,19 ±1,27 vs. 4,26 ±1,32) do que os jogadores portugueses. Quanto às posições de jogo, os pivôs espanhóis treinam mais horas por semana (20,2 ±9,1 vs.12,2 ±3,8) e apresentam maior envergadura (204,4 cm ±7,3 vs.184,0 cm ±6,5) que os portugueses. Ainda, respectivamente, os goleiros e os jogadores laterais espanhóis apresentam percentagens mais elevadas de massa muscular (49,8% ±1,5 vs.42,2% ±5,2 e 49,4% ±1,5 vs.45,5% ±4,6) do que os portugueses. Estas evidências devem ser consideradas para a melhoria do polo aquáticoEl objetivo del estudio fue describir y comparar la morfología general, somatotipo y horas de entrenamiento de jugadores Ibéricos de selecciones nacionales de waterpolo (22 portugueses y 22 españoles) y comparar sus diferencias entre posiciones de juego. Los parámetros evaluados fueron seleccionados en la literatura. La somatocarta fue construida con un software específico (Somatotype, Calculation and Analysis, (c)2001 SWEAT technologies). Los jugadores españoles entrenan más horas por semana (22,8 ±9,5 vs.12,2 ±5,6), tienen más altura (187,4cm ± 6,6 vs.180,3 cm ±5.1), más peso (89,2 kg ±11,6 vs.79,1 kg ±10,0), más envergadura (195,7 cm ±8,5 vs. 185,2 cm ±7,4), porcentaje de masa muscular (49,0% ±1,8 vs. 46,0% ±6,0) y tienden a presentar valores más altos de mesomorfia (5,19 ±1,27 vs. 4,26 ±1,32) que los jugadores portugueses. Con respecto a las posiciones de juego, los boyas Españoles superan los portugueses en las horas de entrenamiento semanal (20,2 ±9,1 vs.12,2 ±3,8) y presentan más envergadura (204,4 cm ±7,3 vs.184,0 cm ±6,5). Los porteros y jugadores periféricos españoles tienen más masa muscular que los jugadores portugueses (49,8% ±1,5 vs. 42,2% ±5,2 e 49,4% ±1,5 vs.45,5% ±4,6), respectivamente. Estas evidencias deberán ser consideradas para la mejora del waterpol

High-Performance Handball Player’s Time-Motion Analysis by Playing Positions

The purpose of this study was to analyze the on-court demands of handball players during the European Handball Federation Champions League Final Four (VELUX EHF FINAL4) 2019 to define time–motion characteristics (played time; covered distances) both in offense and defense. Furthermore; we aimed to define position-specific demands and differences among them. Forty players from three teams were analyzed during the tournament using a local positioning system (LPS) for the first time in top handball. Players covered similar distances both in offense (1388.28 ± 2627.08 m), and in defense (1305.47 ± 5059.64 m) and remained on court for a similar average time (15.69 ± 8.02 min and 15.40 ± 8.94 min respectively). When locomotion activities were normalized according to the time they spent on court; significant differences were found for defense compared to offense in walking (+20%; p < 0.000; Cohen’s effect size (ES) = 1.01) and jogging (−29.6%; p = 0.000; ES = 0.90), as well as a tendency for high-intensity running (+ 25.2%; p = 0.077; ES = 0.31). Per playing position; center and left back (CB = 94.86 ± 10.98 m·min−1 ; LB = 96.55 ± 24.65 m·min−1 ) showed the highest running pace in offense and mid-left; front center defender and outside right for the defense (ML = 90.38 ± 30.16 m·min−1 ; FCD = 87.04 ± 14.94 m·min−1 ; OR = 89.64 ± 34.93 m·min−1 ). In conclusion; profile differences existed among players’ position activity; both in offense and defense; which should be taken into account when designing specific physical training programs.MINECO/FEDER 20928/PI/18Consejo Superior de Deportes PID2019-108336GB-10024/UPB/1

First report of Raoiella indica (Acari: Tenuipalpidae) in Colombia

[EN] In January 2010, high populations of Raoiella indica were reported for the first time in Colombia attacking coconut, banana, and heliconia plants in the Tayrona National Park. The predatory mite, Amblyseius largoensis, was found associated with R. indica in Los Naranjos, Magdalena. Strict sanitary strategies and other management tactics should be implemented to minimize the damage caused by R. indica in the AmericasCarrillo, D.; Navia, D.; Ferragut Pérez, FJ.; Peña, J. (2011). First report of Raoiella indica (Acari: Tenuipalpidae) in Colombia. Florida Entomologist. 94(2):370-371. doi:10.1653/024.094.0241S37037194

C1GM: Coordinación docente interna e intercambio de experiencias metodológicas innovadoras de enseñanza-aprendizaje para el primer curso del Grado de matemáticas de la Universidad de Salamanca

Memoria ID-0052. Ayudas de la Universidad de Salamanca para la Innovación Docente, curso 2008-2009

Neoseiulus goiano Demite, Cavalcante & Lofego, 2017: 2157

Neoseiulus goiano Demite, Cavalcante & Lofego, 2017 Neoseiulus goiano Demite, Cavalcante & Lofego, 2017: 2157. Specimens examined. Four females on Chamaecrista sp. (Fabaceae); gallery forest, road MG-010 between Cardeal Mota and Morro do Pilar, Serra do Cipó, 19º15’29”S, 43º33’10”W, 1315 m asl; 14 August 2011. One female on Cantinoa sp. (Lamiaceae); rupestrian grassland, near road MG-010, Serra do Cipó, 19º16’10”S, 43º32’58”W, 1245 m asl; 15 August 2011. Geographical distribution. Previously known from the state of Goiás in Brazil. Additional description (five females). Dorsal shield 327 (320–332) long, 187 (185–188) wide. Dorsal setae smooth, except Z4 and Z5, which are conspicuously barbed in the distal part (about 10 barbs in Z4, 16–18 barbs in Z5). Setae j1 25 (24–25), j3 34 (33–35), j4 19 (18–22), j5 19 (16–20), j6 22 (20–25), J2 25 (23–28), J5 8 (7–8), z2 27 (24–28), z4 33 (31–36), z5 19 (18–20), Z1 31 (29–33), Z4 43 (41–45), Z5 64 (60–70), s4 46 (44–48), S2 37 (36–39), S4 23 (20–25), S5 19 (17–23). Sublateral setae r3 24 (21–28), R1 17 (15–18). Six-seven pairs of dorsal solenostomes, pore gd6 undiscernible in some females; pore gd5 punctiform and posteroparaxial to setae z5, the remaining gland openings horseshoe shaped; pore gd9 paraxial and adjacent to the insertions of setae S5. Peritremes pretty narrow, with two rows of longitudinal microvilli; 192 (187–198) long. Ventrally, the presternal region bears two lateral areas sclerotised and granulated. Sternal shield wider than long; anterior margin slightly concave and sinuous, posterior margin concave. Shield 66 (64–69) long and 84 (77–88) wide; distance setae st1–st3 62 (61–63), st2–st2 73 (67–77). Setae st3 inserted near the margin of rounded posterior projections of the shield. Epigynal shield 118 (115–122) long, distance st5–st5 67 (65–68). Ventrianal shield 113 (109–114) long, 74 (70–78) wide at level of setae ZV2, 63 (62–64) wide at level of anus. Distance between pre-anal solenostomes 16 (14–18). Posterior (primary) metapodal shield 24 (22–27) long; anterior (secondary) metapodal 18 (17–19). Setae JV4 twice as long as setae ZV3 (19–22 and 10–11, respectively); setae JV5 48 (43–52). Major duct of the spermatheca only visible near the junction with the rest of the spermathecal apparatus; apparently is vacuolated distally; calyx short and tubular, (8–9) long, (6–7) wide, with almost parallel sides. Cheliceral fixed digit 32 (30–33), with eight teeth, two subapical more developed and six proximal aligned; movable digit 30 (29–31), with three teeth. Erect and knobbed macrosetae on genu IV 29 (27–32), tibia IV 12 (11–13) and basitarsus IV 37 (35–39) long. Remarks. Setal measurements and dimensions of sclerotised shields in the females examined are coincident with those reported in the original description of the species (Demite et al., 2017). These authors considered that the leg IV bears three macrosetae; curiously the one on tibia IV is the shorter seta on the segment and can only be distinguished by its morphology, terminating in a distal knob. The structure of the spermathecal apparatus reminds that of N. tunus (De Leon) and can be found in other Neotropical Amblyseiinae species, like Amblyseius operculatus De Leon. Even though in the original description of N. goiano it is claimed that the atrium is not visible, from the microscopic observation is not clear whether the sclerotised area at the base of the calyx really belongs to the calyx or represents the enlarged and strongly compressed and flattened C-shaped atrium.Published as part of Ferragut, Francisco & Navia, Denise, 2022, The genus Neoseiulus Hughes (Mesostigmata: Phytoseiidae) in the Espinhaço Range, a great reservoir of biodiversity in Brazil, pp. 523-542 in Zootaxa 5120 (4) on pages 534-535, DOI: 10.11646/zootaxa.5120.4.4, http://zenodo.org/record/639282