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Academic literature on the topic 'Larval stages'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "Larval stages"

1

CURIEL, JOSEFINA, and JUAN J. MORRONE. "Association of larvae and adults of Mexican species of Macrelmis (Coleoptera: Elmidae): a preliminary analysis using DNA sequences." Zootaxa 3361, no. 1 (June 29, 2012): 56–62. http://dx.doi.org/10.11646/zootaxa.3361.1.5.

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Insect life stages are known imperfectly in many cases, and classifications are usually based on adult morphology. This isunfortunate as information on other life stages may be useful for biomonitoring. The major impediment to using elmid(Coleoptera) larvae for freshwater biomonitoring is the lack of larval descriptions and illustrations. Reliable molecular proto-cols may be used to associate larvae and adults. After adults of seven species of Mexican Macrelmis were identified morpho-logically, seven larval specimens were associated to them based on two gene fragments: Cox1 and Cob. The phylogeneticanalysis allowed identifying the larval specimens as Macrelmis leonilae, M. scutellaris, M. species 7, M. species 10, and M.species 11. Two species based on adults associated uncertainly with one larva, and one larva did not match with any adult. Adult/larval association in elmids using DNA sequence data seems to be promising in terms of speed and reliability.

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Gosik, Rafał, Peter Sprick, and Michael G. Morris. "Descriptions of immature stages of four species of the genera Graptus, Peritelus, Philopedon, and Tanymecus and larval instar determination in Tanymecus (Coleoptera, Curculionidae, Entiminae)." ZooKeys 813 (January 7, 2019): 111–50. http://dx.doi.org/10.3897/zookeys.813.30336.

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The mature larva and pupa of Graptustriguttatustriguttatus and the mature larva of Peritelussphaeroides are described for the first time. The larvae of Philopedonplagiatum and Tanymecuspalliatus are re-described. Five larval instars were determined in Tanymecus, thereby correcting doubtful data in the literature. The relationship between larval growth, number of larval instars, head width of the mature larva, and the adult weevil is explained using the example of Tanymecus. The nearly constant ratio of subsequent larval instars in head width ratio, termed “growth factor” and derived from Dyar’s ratio, is used for the determination of larval instars. Larval collecting and breeding data are discussed in relation to their significance for the clarification of life-cycles.

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Zavala-Leal, I., S. Dumas-Lapage, and R. Peña-Martinez. "ORGANOGÉNESIS DURANTE EL PERIODO LARVAL EN PECES." CICIMAR Oceánides 26, no. 2 (December 4, 2011): 19. http://dx.doi.org/10.37543/oceanides.v26i2.100.

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La presencia de un periodo larval caracteriza a los peces con ontogenia indirecta. Este periodo de desarrollo implica una serie de transformaciones encaminadas a la adquisición de las características biológicas y ecológicas propias de la especie; y en muchos casos culmina con cambios de distribución y hábitos alimenticios. El periodo larval incluye cuatro estadios de desarrollo: larva vitelina, larva pre-flexión, larva flexión y larva post-flexión. Cada estadio de desarrollo presenta características asociados a cambios en las diferentes prioridades durante el crecimiento. De esta forma, durante los estadios de larva vitelina y larva pre-flexión, la prioridad es incrementar las posibilidades de supervivencia a través de enfatizar la capacidad alimenticia y de evasión de depredadores, lo cual se ve reflejado en una mayor diferenciación de estructuras asociadas a estas funciones. La larva flexión se caracteriza por presentar un mayor grado de funcionalidad de los órganos y estructuras desarrolladas anteriormente. Finalmente, durante el estadio de larva post-flexión se presentan los cambios más agudos con respecto a la funcionalidad de los órganos ya desarrollados. En el presente trabajo se realiza la descripción del desarrollo de estos órganos para cada uno de los estadios de desarrollo larval, haciendo referencia en las diferencias y semejanzas entre distintas especies de importancia comercial. Organogenesis during the larval period in fishes The presence of a larval period is characteristic of fishes with an indirect ontogeny. Many transformations involved in this period lead to the acquisition of biological and ecological characteristics of each species, that culminate in changes in distribution and feeding habits. Larval period includes four developmental stages: viteline larvae, pre-flexion larvae, flexion larvae and post-flexion larvae. Each developmental stage showed inherent characteristics associated with changes in priorities during growth. During the viteline larvae and pre-flexion larval stages, priority is about increasing the survival possibility through an increase in the capacity of feeding and escaping predators which is reflected in the development of structures involved in these activities. The flexion larva is characterized by a greater degree of functionality of organs and structures previously developed. Finally, the post-flexion larvae show the most drastical changes in the functionality of developed organs. In this work, we present a description of the development of these organs, taking into account differences and similarities between species.

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TORII, TAKAAKI, and MASATOSHI NAKAMURA. "DNA identification and morphological description of the larva of Eoneureclipsis montanus (Trichoptera, Psychomyiidae)." Zoosymposia 10, no. 1 (August 9, 2016): 424–31. http://dx.doi.org/10.11646/zoosymposia.10.1.39.

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Six genera of Psychomyiidae (Trichoptera) are known from Japan: Psychomyia, Tinodes, Lype, Metalype, Eoneureclipsis and Paduniella. A psychomyiid larva presumed to be Eoneureclipsis montanus was collected in Japan. We compared the COI sequence data of this putative E. montanus larva with those of identified adults to associate adult and larval life stages. Molecular evidence is presented to support the relationship between adults and larvae of E. montanus in Japan. Illustrations of E. montanus larval characters and a key and character matrix to genera of mature larvae of Japanese psychomyiids are provided.

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ARCHANGELSKY, MIGUEL, and MARIANO C. MICHAT. "Morphology and chaetotaxy of the larval stages of Andogyrus seriatopunctatus Régimbart (Coleoptera: Adephaga: Gyrinidae)." Zootaxa 1645, no. 1 (November 23, 2007): 19–33. http://dx.doi.org/10.11646/zootaxa.1645.1.2.

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The larval stages of Andogyrus seriatopunctatus Régimbart are described and illustrated, including morphometric and chaetotaxic characters. A larval ground pattern for the chaetotaxic characters is presented; it is based on first instar larvae of A. seriatopunctatus. Unidentified larvae of Dineutus MacLeay and a third instar larva of Gyrinus argentinus Steinheil were also inspected. For chaetotaxic homologization comparisons with other adephagan families were performed, mainly with Carabidae and Dytiscidae. The ground pattern is considered provisional due to the lack of previous studies in this family. Larvae of A. seriatopunctatus are briefly compared to those of A. buqueti (Aubé). Notes on the biology of A. seriatopunctatus are also included.

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MAGALHÃES, Célio, and Nelma MEDEIROS. "The Larval Development of Palaemonid Shrimps from the Amazon region reared In the laboratory. VII. Abbreviated development of Pseudopalaemon amazonensis Ramos-Porto, 1979 (Crustacea: Decapoda: Caridea)." Acta Amazonica 28, no. 4 (December 1998): 433. http://dx.doi.org/10.1590/1809-43921998284448.

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Larval development of the freshwater shrimp Pseudopalaemon amazonensis Ramos-Porto was studied in the laboratory based on the offspring of ovigerous females collected in a small “terra-firme” forest stream near Manaus, Brazil. Ovigerous females with a mean total length of 36.5 ± 1.9 mm carried 13-19 eliptical, yolk-rich eggs measuring 2.55 ± 0.16 x 1.64 ± 0.11 mm. The larval period consisted of 3 benthie stages and the larvae accomplished metamorphosis after 7-8 days without feeding. The newly-hatched larva had sessile eyes and all appendages, except for the uropods; chelipeds were present as uniramous buds, but walking legs were fully developed and functional. Descriptions and illustrations of the 3 larval and first juvenile stages are presented.

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M, Madhavi, Babu Rao G, and Srinivas V. "Morphological Abnormalities of Betulinic Acid from Ziziphus Jujuba Against the Callasobruchus Chinensis (Coleoptera: Bruchidae)." Biosciences, Biotechnology Research Asia 16, no. 2 (June 28, 2019): 411–16. http://dx.doi.org/10.13005/bbra/2756.

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Betulinic acid is a compound isolated from bark of Ziziphus jujuba. Betulinic acid,a triterpenoid. Betulinic acid exhibits a broad range of biological activities. It is an insect growth regulator, we observed the effect of different concentrations (10, 8, 6, 4and 2 μg / μl doses) Betulinic acid on Callosobruchus chinensis growth and development, in our observations we observed various morphological abnormalities like degeneration, deformation in larval, pupal stages. Untreated Callosobruchus chinensis showed normal in the developmental stages with the larval instar stages and henceforth developimg into pupa without any deformities. However Betulinic acid affected larval instars showed disrupted structures of the cuticle like tanning of cuticle and abnormal larvae over-aged larva with either complete or partial damage of pupa. The results demonstrated that Betulinic acid causes rapid cessation of growth due to disruption of larval structure and inhibition of growth following topical treatment on 4th 5th instar and pupae of Callosobruchus chinensis.

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XU, TIAN, CHAOSHU ZENG, and KATE S. HUTSON. "Morphological descriptions of the larval and first juvenile stages of the decorator crab Camposcia retusa (Latreille, 1829) from laboratory-reared material." Zootaxa 4577, no. 2 (April 5, 2019): 295. http://dx.doi.org/10.11646/zootaxa.4577.2.4.

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The complete larval and first crab stages of the decorator crab Camposcia retusa (Latreille, 1829) are described and illustrated based on laboratory-reared material for the first time. Specimens were obtained from larvae hatched from adult crabs collected from coral reefs of Queensland, Australia. Newly hatched larvae were successfully reared to settlement as the first-stage crabs. Larval development consisted of two zoeal stages and one megalopal stage. The morphology of each larval stage was compared with those available from a previous study using material from the Red Sea. Due to substantial differences in morphology of the second zoeal and megalopal stages between the two studies, we argue that these larval stages described by the earlier report may not be that of C. retusa. Finally, the morphological characters of both larval and first crab stages of C. retusa are also compared with the corresponding stages of previously reported Inachidae.

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Einer, H., and E. Ellegård. "Nasal myiasis by Oestrus ovis second stage larva in an immunocompetent man: case report and literature review." Journal of Laryngology & Otology 125, no. 7 (May 24, 2011): 745–46. http://dx.doi.org/10.1017/s002221511100096x.

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AbstractObjective:We report a case of an Oestrus ovis larva which developed into the second larval stage within a healthy, immunocompetent human, and we review the relevant literature.Methods:Clinical case report and Pubmed search of reports of human nasal myiasis due to Oestrus ovis, especially those describing the larval stage.Results:Humans are not normally hosts of the sheep nasal bot fly, but infestations by its larvae have been described. The eye is the most common site, but larvae have occasionally been found in the human nose. Transformation of larvae into the second and third stages, within the human nose, is even more uncommon.Conclusion:To the best of our knowledge, we report the first Swedish case, and the third case world-wide, of Oestrus ovis larval development beyond the first larval stage, within an immunocompetent, healthy human.

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Wehrtmann, Ingo S., and Luis Albornoz. "Larvae of Nauticaris magellanica (Decapoda: Caridea: Hippolytidae) reared in the laboratory differ morphologically from those in nature." Journal of the Marine Biological Association of the United Kingdom 83, no. 5 (September 19, 2003): 949–57. http://dx.doi.org/10.1017/s0025315403008130h.

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The variability of larval morphology in the caridean shrimp Nauticaris magellanica cultivated in the laboratory was analysed, and its applicability for the identification of larval stages collected from the plankton evaluated. Both morphometric and meristic variability of selected appendages was analysed comparing larvae from the rearing experiment with those obtained from the plankton. Larval development in the laboratory consisted of at least nine zoeal and five decapodid stages, followed by the first juvenile stage. Larvae collected from the plankton, comprising individuals from zoea II to, presumably, zoea VIII, were generally more developed and had a larger size than the corresponding stages reared in the laboratory. Cultured larvae showed a high exophenotypical variability starting with zoea IV, which impeded an immediate determination of larval stages obtained from the plankton.

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Dissertations / Theses on the topic "Larval stages"

1

Saunders, Laura Margaret. "Infection strategies of gamebird macroparasites." Thesis, University of Stirling, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341230.

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Delves, C. J. "Developmental processes in filarial worms." Thesis, University of Liverpool, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377098.

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Ménard, Louise. "Aspects of the ecology of the larval stages of Cyathocotyle bushiensis Khan 1962 (Digenea)." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66176.

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Medrano, Jennifer Centurion. "Chemotactic Response of Lumbricus terrestris Coelomocytes to Larval and Adult Stages of Rhabditis pellio." Thesis, University of North Texas, 1999. https://digital.library.unt.edu/ark:/67531/metadc5507/.

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Experiments were performed to assess the suitability of Rhabditis pellio, a nematode found in earthworms, as a challenge organism for use in development of a biomarker assay to determine the potential of chemicals to suppress the immunocompetence of the non-specific immune system. To accomplish this goal, information on the life cycle of R. pellio was determined; including effects of incubation time and temperature on growth rates; along with information on the immune response elicited in the earthworm, Lumbricus terrestris. Immune parameters measured were coelomocyte migration toward and attachment to R. pellio larvae and adults. Preliminary background information showed that R. pellio has potential as a challenge organism for development of a biomarker assay.

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Hopkins, Susan Marian. "Studies on survival and development of the larval stages of the trichostrongyle nematode "Nematospiroides dubius." Thesis, Royal Holloway, University of London, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549680.

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Albright, Rebecca. "Effects of Ocean Acidification on Early Life History Stages of Caribbean Scleractinian Corals." Scholarly Repository, 2011. http://scholarlyrepository.miami.edu/oa_dissertations/574.

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Ocean acidification (OA) refers to the increase in acidity (decrease in pH) of the ocean’s surface waters resulting from oceanic uptake of atmospheric carbon dioxide (CO2). Mounting experimental evidence suggests that OA threatens numerous marine organisms, including reef-building corals; however, few studies have focused on the effects on early life history stages. Coral recruitment is critical to the persistence and resilience of coral reefs and is regulated by several early life processes, including: larval availability (gamete production, fertilization, etc.), larval settlement, post-settlement growth, and survival. Environmental factors that disrupt these early life processes can result in compromised or failed recruitment and profoundly affect future population dynamics. To evaluate the effects of OA on the sexual recruitment of corals, sexual reproduction (including fertilization and sperm swimming speeds) and several critical early life history stages (including larval metabolism, larval settlement, and post-settlement growth) were tested in common Caribbean coral species. Three pCO2 levels were used: ambient seawater (380 µatm) and two pCO2 scenarios that are projected to occur by the middle (560 µatm) and end (800 µatm) of the century as determined by the Intergovermental Panel on Climate Change. Results show that fertilization success, larval metabolic rates, larval settlement rates, and post-settlement growth rates are all compromised with increasing pCO2. This dissertation demonstrates that OA has the potential to negatively impact sexual reproduction and multiple early life history processes of several common Caribbean coral species and may contribute to substantial declines in sexual recruitment that are felt at the community and/or ecosystem scale.

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Chiu, Man Ying. "Biological and ecological processes that intervene the larval and juvenile stages of the gastropod crepidula onyx /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?AMCE%202007%20CHIU.

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Bruno, Trezia Ieda Ballerini. "Infecção de Biomphalaria glabrata com Angiostrongylus costaricensis : desenvolvimento larval e resposta hemocitaria." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314681.

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Orientador: Eliana Maria Zanotti-Magalhães
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia
Made available in DSpace on 2018-08-05T18:40:54Z (GMT). No. of bitstreams: 1 Bruno_TreziaIedaBallerini_D.pdf: 6507064 bytes, checksum: 5515a1ea19ac4cfea55f25a3da2f2efa (MD5) Previous issue date: 2005
Resumo: Experimentalmente, Biomphalaria glabrata pode ser utilizada como hospedeiro intermediário do nematódeo Angiostrongylus costaricensis, responsável pela angiostrongilíase abdominal. Esta zoonose, descrita no Brasil principalmente nos estados sulinos, pode acometer acidentalmente o homem, sendo que a infecção ocorre através da ingestão de moluscos parasitados ou água e alimentos contaminados com larvas de 3° estágio, eliminadas no muco dos moluscos hospedeiros. O objetivo deste trabalho foi estudar o desenvolvimento dos estágios larvais e o comportamento dos hemócitos na hemolinfa de B. glabrata infectada.Um total de 168 moluscos foi infectado com 120 larvas LI de A. costaricensis extraídas das fezes de camundongos Swiss albinos previamente infectados via oral sob tubagem esofágica com 6 larvas L3. Larvas de A. costaricensis foram recuperadas de 45 moluscos B. glabrata após 15, 22 e 29 dias de exposição ao parasita, através do método de Baermann, utilizando tecidos digeridos dos moluscos com solução de pepsina e ácido clorídrico. Constatou-se maior recuperação de larvas de A. costaricensis dos moluscos aos 29 dias de infecção. Para o estudo do desenvolvimento de Ao costaricensis, 60 moluscos infectados foram destinados a recuperação larval durante 30 dias consecutivos. Foi observada a mudança larval de LI para L2 aos 13 dias de infecção e L2 para L3 aos 18 dias de infecção. Hemolinfa de 45 moluscos infectados e não infectados com A. costaricensis foi coletada para verificação da resposta hemocitária durante 4 semanas. Os hemócitos foram distinguidos em hialinócitos e granulócitos. Enquanto nos moluscos não infectados predominaram os hialinócitos, naqueles infectados os granulócitos foram mais evidentes, principalmente entre o 18° ao 25° dia de infecção. Foi confirmada a ocorrência tanto da infecção percutânea como por via oral. Os locais mais parasitados foram: região cefalopodal, a preferida pelo nematódeo, seguida do intestino, rim e pulmão. Todas as larvas encontradas estavam viáveis e rodeadas por reação do tipo granulomatosa, independentes de sua localização
Abstract: Biomphalaria glabrata can be experimentally used as an intermediate host of the nematode Angiostrongylus costaricensis, responsible for abdominal angiostrongyliasis. This zoonosis, found in Brazil mainly in the southem states, can accidentally infect man through the ingestion of parasitized mollusks or contaminated water and food containing third-stage larvae, eliminated in the mucous secretion of the mollusks. The objective of this work was to study the development of larval stages and the behavior of hemocytes in the hemolymph of infected B. glabrata. A total of 168 mollusks were infected with 120 LI larvae of A. costaricensis, extracted ftom excrement of albino Swiss mice previously infected via the oral route by esophageal tube with 6 L3 larvae. The A. costaricensis larvae had been recovered from 45 B. glabrata mollusks at 15, 22 and 29 days after exposure to the parasite, by means of the method of Baermann, using molluscan tissues digested with pepsin and hydrochloric acid solution. A larger recovery of A. costaricensis larvae from the mollusk was found at 29 days after infection. For the study of the development of A. costaricensis, 60 infected mollusks were allocated for larval recovery during a period of 30 consecutive days. It was observed that there was a larval stage change, from L1 to L2, at the 13th day after infection and from L2 to L3 on the 18th day after infection.The hemolymph of 45 mollusks, both infected and not infected with A. costaricensis, was collected for verification of the hemocyte response during 4 weeks. The hemocytes were differentiated into hyalinocytes and granulocytes. While in the non infected mollusks the hyalinocytes had predominated, in those infected granulocytes were more evident, mainly between the 18th and the 25th day after infection. The occurence of infection, both via percutaneous and via oral routes, was confirmed. The most parasitized sites were the cephalopodan mass, preferred by the nematodes, folIowed by the intestines, kidneys and lungs. AlI the larvae found were viable and surrounded by reaction of the granulomatous type, independent of their situation
Doutorado
Mestre em Parasitologia

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9

Smith, Kent James. "Enhanced Cold Tolerance of Diapause-Destined vs Non-Diapause-Destined Larval Stages of the Flesh Fly, Sarcophaga Crassipalpis(Diptera: Sarcophagidae)." Oxford, Ohio : Miami University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1172780125.

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Balfour, David Leigh. "Ontogenetic Changes and Environmental Hypoxia: Responses of Two Fish Species to Low Oxygen Concentrations at Early Life Stages." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/26467.

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Hypoxia refers to any condition in which the water is less than fully saturated with oxygen. Although it is generally accepted that adults are more tolerant of hypoxic conditions than larval stages, there is little information to support this assumption. To determine whether reduced concentrations of dissolved oxygen (DO) affect fishes differently during various early life stages, I examined the responses of two species of fish (fathead minnows (Pimephales promelas) and rainbow trout (Oncorhynchus mykiss)) exposed to low dissolved oxygen concentrations at different ages during the first 100 days post-hatch. The changes in oxygen requirements and respiratory patterns that occur during ontogeny and exposure to hypoxia were observed. The results of this study suggest that the early larval stages appear to be at least as tolerant of short-term exposure to low dissolved oxygen concentrations as the older, more developed stages. Fathead minnows underwent a gradual transition from being metabolic conformers to regulators during development. Hemoglobin appeared to be playing a larger role in oxygen supply in the early post-hatch trout than in the minnows. Fathead minnow larvae produced relatively low concentrations of lactate upon exposure to hypoxia. Conversely, rainbow trout larvae exhibited significant increases in lactate concentration under similar conditions. This implies that there is a threshold oxygen concentration below which trout larvae utilize anaerobic metabolism to provide additional energy. Lactate dehydrogenase activity increased as the rainbow trout larvae aged, suggesting that they develop an anaerobic capacity which could be used to provide additional energy during hypoxia. The minnows did not exhibit this increase in activity. The ability of larval fishes to detect and avoid hypoxic conditions was also examined. The overall trends suggest that throughout this period of development, both fish species gradually leave an area as the dissolved oxygen concentration decline. Both species appeared to leave the hypoxic areas with deliberate motions, indicating that a directed sensor system allowed them to detect oxygen gradients. The results suggest that a combination of physiological, biochemical, and behavioral mechanisms may allow fishes to cope with hypoxia.
Ph. D.

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Books on the topic "Larval stages"

1

Larval stages of northeastern Atlantic crabs: An illustrated key. London: Chapman & Hall, 1992.

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Žd̕árská, Zdeňka. Evolution of morphological features in larval stages of digenetic trematodes. Praha: Academia, nakl. Československé akademie věd, 1986.

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Ingle, R. W. Larval stages of Northeastern Atlantic crabs: An illustrated key / Ray Ingle. London: Chapman and Hall, 1992.

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Mwaluma, James. A guide to commonly occuring larval stages of fishes in Kenyan coastal waters. Mombasa: WIOMSA, 2014.

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W, Sutcliffe D., ed. Keys to larval and juvenile stages of coarse fishes from fresh waters in the British Isles. Cumbria, UK: Freshwater Biological Association, 2001.

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Bullard, Stephan Gregory. A guide to the larval and juvenile stages of common Long Island Sound ascidians and bryozoans. Groton, Conn: Connecticut Dept. of Environmental Protection, 2004.

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Baker, Gerald T. Morphology of eyes and sensory receptors of larval and adult stages of Thyridopteryx ephemeraeformis Haworth (Lepidoptera, Psychidae). Mississippi State: Dept. of Information Services, Division of Agriculture, Forestry, and Veterinary Medicine, Mississippi Agricultural & Forestry Experiment Station, 1990.

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Larvae of anomuran and brachyuran crabs of North Carolina: A guide to the described larval stages of anomuran (families Porcellanidae, Albuneidae, and Hippidae) and brachyuran crabs of North Carolina, U.S.A. Leiden: Brill, 2003.

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Smith, Kenneth G. V. An introduction to the immature stages of British flies: Diptera larvae, with notes on eggs, puparia, and pupae. London: British Museum (Natural History), 1989.

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Bower, Susan M. Atlas of anatomy and histology of larvae and early juvenile stages of the Japanese scallop (Patinopecten yessoensis) =: Atlas d'anatomie et d'histologie des larves et des premiers stades juvéniles du pétoncle japonais (Patinopecten yessoensis). Ottawa, Ont: Dept. of Fisheries and Oceans, 1990.

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Book chapters on the topic "Larval stages"

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Paredes, Estefania, Pablo Heres, Catarina Anjos, and Elsa Cabrita. "Cryopreservation of Marine Invertebrates: From Sperm to Complex Larval Stages." In Cryopreservation and Freeze-Drying Protocols, 413–25. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0783-1_18.

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Asplin, Lars, Karin K. Boxaspen, and Anne D. Sandvik. "Modeling the Distribution and Abundance of Planktonic Larval Stages ofLepeophtheirus salmonisin Norway." In Salmon Lice, 29–50. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470961568.ch1.

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Roberts, Brian. "Photoperiodic Regulation of Prothoracicotropic Hormone Release in Late Larval, Prepupal and Pupal Stages ofSarcophaga bullata." In Ciba Foundation Symposium 104 - Photoperiodic Regulation of Insect and Molluscan Hormones, 170–88. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720851.ch11.

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Anstensrud, M., and T. A. Schram. "Host and site selection by larval stages and adults of the parasitic copepod Lernaeenicus sprattae (Sowerby) (Copepoda, Pennellidae) in the Oslofjord." In Biology of Copepods, 587–95. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3103-9_69.

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Hawkey, Kerensa, John Brameld, Tim Parr, Andrew Salter, and Heidi Hall. "Suitability of insects for animal feeding." In Insects as animal feed: novel ingredients for use in pet, aquaculture and livestock diets, 26–38. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789245929.0004.

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Abstract This chapter explores the nutritional composition of insects and the potential benefits and drawbacks for their inclusion into pet, poultry, pig, ruminant and aquatic animal feeds. Six species are most commonly described for use in animal feed, namely black soldier fly (BSF; Hermetia illucens) larvae and prepupae, yellow mealworm (YM; Tenebrio molitor) larvae, superworm (SW; Zophobas morio) larvae, lesser mealworm (LM; Alphitobius diaperinus) larvae, house fly (HF; Musca domestica) larvae and house crickets (HC; Acheta domesticus). The nutritional composition, variability observed due to manipulation of feed source, age, developmental stage and suitability for inclusion into animal feed are compared.

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Pereira, Guido, and José V. García. "The First Two Larval Stages of Two Freshwater Shrimps Genus Macrobrachium (Decapoda, Palaemonidae) Reared in the Laboratory, with a Discussion on the Significance of Abbreviated Development for the Radiation of the Genus." In Modern Approaches to the Study of Crustacea, 323–28. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0761-1_45.

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Ueberschär, Bernd, Carmen Navarro-Guillén, Ana Gomes, Ivar Rønnestad, Carlos Rojas-Garcia, Inken Hanke, Dagh Sommerfeld, and Robert Tillner. "Variability in Digestive Enzyme Capacity in Early Stages of Marine Fish Larvae: Ontogenetic Variations, Biorhythms, Hormonal Control and Nutrient Sensing Mechanisms." In Emerging Issues in Fish Larvae Research, 87–129. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73244-2_4.

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Guidi, Alessandra, Roberto Gimmelli, Alberto Bresciani, and Giovina Ruberti. "Luminescence-Based, Low- and Medium-Throughput Assays for Drug Screening in Schistosoma mansoni Larval Stage." In Methods in Molecular Biology, 219–27. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0635-3_18.

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Davis, T. L. O., and V. D. Lyne. "Dispersal of the larval stage of southern bluefin tuna, Thunnus maccoyii, in the east Indian Ocean." In Coastal and Estuarine Studies, 137–48. Washington, D. C.: American Geophysical Union, 1994. http://dx.doi.org/10.1029/ce045p0137.

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Knight, Richard. "Cestodes (tapeworms)." In Oxford Textbook of Medicine, edited by Christopher P. Conlon, 1520–28. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0179.

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Adult tapeworms maintain anchorage to the host small-gut mucosa by means the scolex, a holdfast structure. The rest of the body forms the strobila and consists of a chain of flattened proglottids, which proliferate just behind the scolex. The life cycle then includes larval stages in one or more intermediate hosts. Many species of tapeworm, all zoonoses, infect humans as adult worms or larval stages. Serious disease can result when larval stages occur accidentally in humans, whereas infections by the adult stages often cause little harm. Two groups of cestode infect humans: the Cyclophyllidea and the Pseudophyllidea. The former have a terrestrial life cycle and cystic larvae; the latter have an aquatic cycle and worm-like larvae.

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Conference papers on the topic "Larval stages"

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Liu, Shaoying, Juhua Chang, and Guonian Zhu. "Developmental Toxicity of Triadimefon in Embryo-Larval Stages of Zebrafish." In 2010 International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2010. http://dx.doi.org/10.1109/icdma.2010.347.

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Rodrigues de Lima, Lucas, Eudamara Barbosa da Silva Acosta, Ariadne Barbosa Goncalves, Marcio Carneiro Brito Pache, Diego Andre Sant'Ana, Celso Soares Costa, Hemerson Pistori, Alessandro dos Santos Ferreira, and Carina Elisei. "Application of Superpixel to identify Maggots and their larval stages." In 2019 XV Workshop de Visão Computacional (WVC). IEEE, 2019. http://dx.doi.org/10.1109/wvc.2019.8876927.

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Wang, Ying. "TA/TYR regulates division of labor at both larval and adult stages." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.113775.

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Thacker, Hayden, and Daniel I. Hembree. "NEOICHNOLOGICAL STUDY OF BURROWING DARKLING BEETLES (COLEOPTERA: TENEBRIONIDAE) FROM LARVAL TO ADULT STAGES." In Joint 69th Annual Southeastern / 55th Annual Northeastern GSA Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020se-344182.

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da Silva, Paulo Roberto. "Spodoptera frugiperdadamage potential and larval response during vegetative and reproductive stages of maize development." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.112175.

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Yago, Masaya. "The immature stages, larval host plants and biology of oriental poritiine butterflies (Lepidoptera: Lycaenidae: Poritiinae)." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.114366.

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Blahovec, Ján, Zuzana Kostecká, and Alica Kočišová. "Proteolytic enzymes with endo- and exo-peptidolytic activity in different larval stages of housefly Musca domestica." In Xth Conference Biologically Active Peptides. Prague: Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 2007. http://dx.doi.org/10.1135/css200709011.

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Takahashi, Satoru, Satoru Takahashi, Masami Hamaguchi, and Masami Hamaguchi. "SEASONAL VARIATION OF TRANSPORTATION OF ASARI CLAM, RUDITAPES PHILIPPINARUM, LARVAE IN HIROSHIMA BAY." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315cbb321.

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Hiroshima Bay is located in western part of the Seto Inland Sea, and there is high productivity of Asari clam. However, the landings amount of the clam was rapidly decreased and production areas came to be limited in the northern part (bay head). Here, the clam has the planktonic larval stage. Then, it is important to reveal the transportation process of larvae to clarify the habitat connectivity of the clam. Therefore, in this study, we try to clarify the transportation process of the clam larvae in the Hiroshima Bay by numerical model experiments. As a result of model experiments, in June (rainy and heating season), the larvae are transported to southward in western area of Hiroshima Bay. In November (dry and cooling season), distribution of larvae is limited in the northern area of Hiroshima Bay. These results are corresponding to the field observation results. In the Seto Inland Sea, it is said that there is spawning time of the clam twice a year (spring and autumn). However, in a recent Hiroshima Bay, the density of the larva in spring is very low than that in autumn. These facts suggest that the production of the clam is limited in the northern area of Hiroshima Bay because the density of the larva is low in spring when the larvae can extend to the south.

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Takahashi, Satoru, Satoru Takahashi, Masami Hamaguchi, and Masami Hamaguchi. "SEASONAL VARIATION OF TRANSPORTATION OF ASARI CLAM, RUDITAPES PHILIPPINARUM, LARVAE IN HIROSHIMA BAY." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b937f57cd63.62615734.

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Hiroshima Bay is located in western part of the Seto Inland Sea, and there is high productivity of Asari clam. However, the landings amount of the clam was rapidly decreased and production areas came to be limited in the northern part (bay head). Here, the clam has the planktonic larval stage. Then, it is important to reveal the transportation process of larvae to clarify the habitat connectivity of the clam. Therefore, in this study, we try to clarify the transportation process of the clam larvae in the Hiroshima Bay by numerical model experiments. As a result of model experiments, in June (rainy and heating season), the larvae are transported to southward in western area of Hiroshima Bay. In November (dry and cooling season), distribution of larvae is limited in the northern area of Hiroshima Bay. These results are corresponding to the field observation results. In the Seto Inland Sea, it is said that there is spawning time of the clam twice a year (spring and autumn). However, in a recent Hiroshima Bay, the density of the larva in spring is very low than that in autumn. These facts suggest that the production of the clam is limited in the northern area of Hiroshima Bay because the density of the larva is low in spring when the larvae can extend to the south.

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Silivanova, E. A., P. A. Shumilova, and M. A. Levchenko. "INFLUENCE OF INSECTICIDE BREEDING ON BIOLOGICAL PARAMETERS OF MUSCA DOMESTICA L. (DIPTERA: MUSCIDAE)." In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-80.

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The goal of the current research was to evaluate the biological parameters of insects when they were exposed to insecticides for several generations. In the experiments, the adults of the house fly Musca domestica L. were feed with one of two insecticides (chlorfenapyr or fipronil) in each generation. The duration of development stages, fecundity, the weight of larvae, pupa, and adults, as well as the sizes of females and males, were evaluated. The statistical significance of differences in biological parameters was assessed by the non-parametric Kruskal-Wallis and Dunn criteria. The duration of the larva stages lasted 2.2 times more in the fourth generation of chlorfenapyr- and fipronil-exposure strains compared to the control laboratory strain of M. domestica. Increasing the period of preimaginal stages of the insect life cycle can be considered as a sublethal effect of insecticides.

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Reports on the topic "Larval stages"

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Greeley Jr, Mark Stephen, Logan R. Elmore, and Kitty McCracken. EVALUATING THE EFFECTS OF FLY ASH EXPOSURE ON FISH EARLY LIFE STAGES: FATHEAD MINNOW EMBRYO-LARVAL TESTS. Office of Scientific and Technical Information (OSTI), May 2012. http://dx.doi.org/10.2172/1045856.

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Burd, B. J., and G. S. Jamieson. Survey of Larval Stages of Commercial Species in the area and Time of the 1988 Seismic Survey in the Queen Charlotte Sound and Hecate Strait. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/131987.

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Bayer, Jennifer M., Michael H. Meeuwig, and James G. Seelye. Identification of Larval Pacific Lampreys (Lampetra Tridentata), River Lampreys (L. Ayresi) and Western Brook Lampreys (L. Richardsoni) and Thermal Requirements of Early Life History Stages of Lampreys : Annual Report 2000. Office of Scientific and Technical Information (OSTI), January 2001. http://dx.doi.org/10.2172/780880.

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Meeuwig, Michael H. Identification of Larval Pacific Lampreys (Lampetra Tridentata), River Lampreys (L. Ayresi) and Western Brook Lampreys (L. Richardsoni) and Thermal Requirements of Early Life History Stages of Lampreys : Annual Report 2001. Office of Scientific and Technical Information (OSTI), January 2002. http://dx.doi.org/10.2172/799143.

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Meeuwig, Michael H. Identification of Larval Pacific Lampreys (Lampetra Tridentata), River Lampreys (L. Ayresi) and Western Brook Lampreys (L. Richardson) and Thermal Requirements of Early Life History Stages of Lampreys : Annual Report 2002. Office of Scientific and Technical Information (OSTI), February 2003. http://dx.doi.org/10.2172/821798.

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Meeuwig, Michael. Identification of Larval Pacific Lampreys (Lampetra tridentata), River Lampreys (L. ayresi), and Western Brook Lampreys (L. richardsoni) and Thermal Requirements of Early Life History Stages of Lampreys, Annual Report 2002-2003. Office of Scientific and Technical Information (OSTI), January 2004. http://dx.doi.org/10.2172/963076.

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Jung, Carina, Matthew Carr, Eric Fleischman, and Chandler Roesch. Response of the green June beetle and its gut microbiome to RDX and phenanthrene. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38799.

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Green June beetles are a cosmopolitan pest in the United States. Adults are voracious consumers of tree and vine fruit, while their larvae can dam-age and inadvertently consume root systems, particularly those of grasses, as they move through the soil and forage for detritus. Larvae ingest and process large volumes of soil while in the process of feeding. Due to their intimate contact with the soil it was hypothesized that soil contaminants that are known animal toxins would perturb the larval and affect their overall health and survival. Studies of this kind are important contribu-tions to the development of new model organisms and our understanding of interactions between the environment, contaminants, gut microbiome, and animal development, health, and survival. It is important to continue to develop relevant model organisms for monitoring toxicity as regulations for working with vertebrates becomes more prohibitive. In this study green June beetle larvae were exposed to RDX and phenanthrene through-out their entire soil-bound development, starting within the first few days of hatching through to their emergence as adults. The overall findings included that even at high concentrations, RDX and phenanthrene (25 ppm) exerted no significant effect on body weight or survival. Also, there was lit-tle apparent effect of RDX and phenanthrene on the bacterial microbiome, and no statistical association with measurable health effects. Nevertheless, the green June beetle is an interesting model for soil toxicity experiments in the future as is it easy to collect, house, and handle.

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