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... Hesperolabops nigriceps Reuter feeds on cactus plants of the genus Opuntia (Caryophyllales: Cactaceae) and might damage production of prickly pear fruit and nopalitos -- tender pads of O. ficus-indica L. (Miller) eaten as a vegetable. Despite damage caused by the insect to Opuntia plants, there are no reports on its biology, which is essential for planning management strategies. This work studied ...
... The cold hardiness of arthropods is an important characteristic associated with overwintering success. Cold‐tolerant stages affect overwintering strategy, especially in arthropods that continuously feed on evergreen host plants in temperate regions. However, cold hardiness to mildly low temperature is rarely investigated. In the present study, we estimate the stage‐specific cold hardiness of a pop ...
... Comparative efficacy of infective juveniles of Steinernema riobrave Cabanillas, Poinar, and Raulston (355 strain), S. carpocapsae (Weiser) (All strain), S. feltiae Filipjev (SN strain), Heterorhabditis bacteriophora Poinar (VS strain), H. indica Poinar, Karunakar, and David (HOM1 strain), and H. floridensis Nguyen, Gozel, Koppenhöfer, and Adams (K22 strain) were evaluated against engorged adult fe ...
... The diversity of hard tick fauna was studied in different forest communities in 48 localities of eastern Croatia using the dragging-flagging method and by hand from ten different vertebrate hosts. A total of 2,225 specimens comprising seven species in three genera were identified. Ixodes ricinus, the most abundant species (72.8% of all collected specimens) was recorded in 44 localities, followed b ...
... To more effectively manage walnut husk fly Rhagoletis completa (Diptera: Tephritidae), in California walnut orchards, it is important to understand the factors that affect the timing of adult emergence. In the present study, we examine the effects of incubation temperature, pre‐chill and chill durations, latitude, cultivar and size on the post‐diapause development of R. completa puparia. The lower ...
... Chagas disease is one of the main vector-borne diseases in Latin America, including Mexico. Understanding the biological parameters of the triatomine species is a crucial first step in estimating the epidemiologic importance of each group. The aim of this study was to compare the biological fitness of Meccus pallidipennis (Stål), M. bassolsae (Alejandre, Nogueda, Cortez, Jurberg, Galvão, Carcavall ...
... Spiders are model systems for exploring proximate and ultimate questions about the evolution of vibratory signals. However, little is known of the sensory response characteristics of receivers, with one exception in Cupiennius spp. Spiders have vibration receptor organs called metatarsal organs on their legs. The organs contain aggregations of slit sensilla that respond to cuticular strain caused ...
ad libitum feeding; athletes; energy density; energy intake; exercise; females; gastrointestinal system; nutrient intake; osmolality; oxygen; palatability; sports drinks; sugars; urine
Abstract:
... This study investigated the effect of consuming different commercial beverages with food ad libitum after exercise on fluid, energy, and nutrient recovery in trained females. On 4 separate occasions, 8 females (body mass (BM): 61.8 ± 10.7 kg; maximal oxygen uptake: 46.3 ± 7.5 mL·kg⁻¹·min⁻¹) lost 2.0% ± 0.3% BM cycling at ∼75% maximal oxygen uptake before completing a 4-h recovery period with ad li ...
... The effect of delayed female mating for the mushroom fungus gnat Lycoriella ingenua is investigated. We examine the effect of delaying female mating on the fertility and egg viability of female flies that have a mating delay of 0–5 days after emergence. Male fly age is held constant. Female age does not impact male acceptance and most flies copulate within seconds of pairing. We find that female f ...
Apodemus speciosus; allometry; discriminant analysis; females; males; mice; multivariate analysis; ontogeny; sexual dimorphism; skull; standard deviation
Abstract:
... Static skull morphological variation in the large Japanese field mouse (Apodemus speciosus) was analyzed using different indices of variability. Multivariate analysis of variance revealed sexual dimorphism in cranium and mandible sizes, among a total of 89 skulls (45 males and 44 females). The coefficient of variation (CV), standard deviation (SD), and residuals of the standard deviation (RSD) wer ...
Distichodus; adults; basins; body weight; breeding season; environmental factors; females; fish; indigenous species; oocytes; oogenesis; overfishing; rain; rivers; sex hormones; spawning; temperature; watersheds; wet season
Abstract:
... Distichodus antonii is an endemic fish species of the Congo River basin in which the stocks of wild populations are threatened by overfishing pressure. Knowledge of its reproductive biology would be useful in consideration of conservation and management options for the species. Therefore, this study investigated changes in ovarian activity and levels of steroid profiles in wild populations in rela ...
... The physiological mechanisms underlying photoperiodism in insects have been studied extensively, although the associated molecular machinery remains largely unknown. In the present study, we investigate the roles of the circadian clock gene cycle (cyc) and the endocrine regulator gene myoinhibitory peptide (Mip) in the photoperiodic response of the brown‐winged green bug Plautia stali Scott (Hemip ...
... 1. Visual chromatic cues and contrast effects are widely used by insects in behaviours involving host/prey/mate‐finding and recognition. However, naturally changing light conditions may challenge the visual perception of cues for these organisms. 2. We used the host/parasitoid system Acyrthosiphon pisum/Aphidius ervi to determine if apparent visual preference of the wasp for green over pink host a ...