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Registros recuperados: 7
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A longitudinal study of two species of Belostoma Latreille (Heteroptera: Belostomatidae): allometry and ontogeny Neotropical Entomology
Iglesias,Mónica S.; Gaspe,María S.; Valverde,Alejandra C..
The multivariate allometric growth patterns from longitudinal data of leg and rostral segments of all instars of Belostoma elegans (Mayr) and B. cummingsi De Carlo are presented for the first time, and the allometric coefficients are compared. The segments of the middle and hind legs present allometric coefficients with opposite polarity to those of forelegs. This discrepancy in the ontogenetic trajectories may be due to the different functions of the legs. The foreleg main function is to capture of the prey, while the middle and hind legs are adapted to swimming. The relative size of rostral segments is an important taxonomic character in Belostoma. In B. cummingsi, the proximal segment is longer than the middle one, while in B. elegans they are subequal....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nymph; Postembryonic development; Water bug; Morphometry.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000600006
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Acarological and arachnological notes Naturalis
Hammen, L. van der.
A study is made of four subjects in the fields of chelicerate morphology, postembryonic development and relationships, viz., the functional morphology of the legs in Anystis (a fastrunning Actinotrichid mite), the musculature of the gnathosoma of Glyptholaspis confusa (Foà) (an Anactinotrichid mite), the evolution of the chelicerate life-cycle in the case of an irregular number of instars, and the relationships of the chelicerate classes and subclasses.
Tipo: Article / Letter to the editor Palavras-chave: Actinotrichida; Anactinotrichida; Chelicerata; Classification; Fast running; Gnathosoma; Legs; Life-cycle; Locomotion; Morphology; Neostasoid; Neostasoidy; Postembryonic development; Relationships; Stasoid; Stasoidy; 42.74.
Ano: 1986 URL: http://www.repository.naturalis.nl/record/319156
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Antennule development during copepodite phase of some representatives of Harpacticoida (Copepoda, Crustacea) Naturalis
Dahms, Hans-Uwe.
The copepodite antennule development of representatives of 6 harpacticoid families is studied and discussed in detail and that of 8 genera of harpacticoids from 7 families is schematically illustrated. Twenty-seven genera out of 17 harpacticoid families are compared on the basis of own investigations and data from the literature. The origin of newly formed segments can be determined by seta numbers of segments, relative segment length, furrows indicating previous articulations and by the position of the segment which bears the proximal aesthetasc. There are 2 zones of segment formation, both located in the middle part of the first antenna. Normal segment formation takes place distally from the second, aesthetasc-bearing segment from C I to C II and...
Tipo: Article / Letter to the editor Palavras-chave: Morphology; Postembryonic development; Taxonomy; Phylogeny; Developmental pattern; Harpacticoida.
Ano: 1989 URL: http://www.repository.naturalis.nl/record/504074
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Biological parameters of Cydnodromus picanus and Phytoseiulus persimilis raised on the carmine spider mite, Tetranychus cinnabarinus (Acari: Phytoseiidae, Tetranychidae) Ciencia e Investigación Agraria
Tello,Víctor; Vargas,Robinson; Araya,Jaime; Cardemil,Antonieta.
The postembryonic development, consumption and life table parameters of Cydnodromus picanus Ragusa and Phytoseiulus persimilis (Athias-Henriot) were studied at 29.44 ± 1.47 °C and 42.35 ± 5.01% of RH with a photoperiod of 14:10 h (L:D) in order to evaluate the potential of these predators for feeding on the carmine spider mite Tetranychus cinnabarinus (Boisduval). Eggs, larvae and protonymphs of T cinnabarinus may be optimal food for C. picanus, which obtained survival rates of 100%, 97% and 93%, respectively, on them. The survival of P persimilis was around 6.7% with diets based on eggs, larvae and protonymphs, showing a high mortality level by dehydration when fed with eggs. The time of the postembryonic development was significantly shorter (p <...
Tipo: Journal article Palavras-chave: Biological control; Life table; Postembryonic development; Predation.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000200012
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Life Table Parameters and Consumption Rate of Cydnodromus picanus Ragusa, Amblyseius graminis Chant, and Galendromus occidentalis (Nesbitt) on Avocado Red Mite Oligonychus yothersi (McGregor) (Acari: Phytoseiidae, Tetranychidae) Chilean J. Agric. Res.
Rioja S,Tommy; Vargas M,Robinson.
The avocado red mite Oligonychus yothersi (McGregor) is the major leaf pest in Chile’s avocado orchards. Itaffects leaf physiology and makes it necessary to seek new natural enemies to interact with low population densities of O. yothersi. The potentiality of three predator mites: Cydnodromus picanus Ragusa, Amblyseius graminis Chant, and Galendromus occidentalis (Nesbitt) was evaluated under laboratory conditions (27 ± 1.93ºC, 87 ± 3.61% H.R. and 16:8 (L:D) photoperiod) on avocado leaf disks Persea americana Mill. var. Hass (Ø = 5 cm) by separately feeding eggs, immature, and adult females of O. yothersi, and registering postembryonic development, consumption, as well as life table parameters. The postembryonic development of C. picanus was significantly...
Tipo: Journal article Palavras-chave: Postembryonic development; Predation; Pollen; Biological control.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200005
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Parasitoidism Rate and Life Table Parameters of Aphytis diaspidis (Howard) (Hymenoptera: Aphelinidae) and Hemiberlesia lataniae (Signoret) (Hemiptera: Diaspididae) Chilean J. Agric. Res.
Navea O,Dennis; Vargas M,Robinson.
Latania scale, Hemiberlesia lataniae (Signoret), has become a major pest of avocado (Persea americana Mill.) in Chile and has reached high populations in the fruit because of limited natural control. The objective of this study was to identify the biological parameters of the parasitoid Aphytis diaspidis (Howard) as a control agent of latania scale. Postembryonic development, parasitoidism rate, and life table parameters of the parasitoid and scale were determined under laboratory conditions. Aphytis diaspidis postembryonic development and parasitoidism rate varied significantly when evaluated on distinct latania scale stages with the highest survival (56%) occurring at the third scale stage, it also had the shortest development time between egg and adult...
Tipo: Journal article Palavras-chave: Postembryonic development; Life tables; Parasitoidism; Biological control; White scale; Avocado.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300006
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Scorpions and life-history strategies: from evolutionary dynamics toward the scorpionism problem J. Venom. Anim. Toxins incl. Trop. Dis.
Lourenço,Wilson R..
Abstract This work aims to contribute to the general information on scorpion reproductive patterns in general including species that can be noxious to humans. Scorpions are unusual among terrestrial arthropods in several of their life-history traits since in many aspects their reproductive strategies are more similar to those of superior vertebrates than to those of arthropods in general. This communication focuses mainly on the aspects concerning embryonic and post-embryonic developments since these are quite peculiar in scorpions and can be directly connected to the scorpionism problem. As in previous similar contributions, the content of this communication is addressed mainly to non-specialists whose research embraces scorpions in several fields such as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion; Reproductive strategies; Embryonic; Postembryonic development.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992018000100206
Registros recuperados: 7
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