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Wang J, Peng X, Yang H, Lv B, Wang Z, Song Q. Mul-tiomics analysis of cadmium stress on the ovarian function of the wolf spider Pardosa pseudoannulata. CHEMOSPHERE 2020; 248:125904. [PMID: 32014633 DOI: 10.1016/j.chemosphere.2020.125904] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 06/10/2023]
Abstract
Cadmium (Cd) pollution is widespread in paddy filed soil in China. In this study, the toxicity of Cd with regard to the female reproductive system of paddy spider Pardosa pseudoannulata was investigated by means of multi-omics analyses (transcriptome, proteome, and miRNAs). Decreased activities of detoxifying enzymes including peroxidase (POD), Glutathione S-transferases (GST), and superoxide dismutase were detected in the ovary of P. pseudoannulata. Of these, GST and POD were consistently down-regulated at the transcriptional and translational levels. Vitellogenin content and fecundity of the spider were also reduced by Cd burden. Five vitellogenin encodes genes were down-regulated while only vitellogenin-6 protein was up-regulated. But protein lipovitellin-1, the main composition of vitellin, was down-regulated. In addition, the correlation between the mitogen-activated protein kinase (MAPK) signaling pathway and Cd stress was identified. A down-regulated gene that encoding connector of kinase to AP-1 in the MAPK signaling pathway was regulated by the up-regulated miRNA (miRNA id: miRNA dan-miR- 318>der-miR-318>dgr-miR-318>dme-miR-318-3p > dmo-miR-318>dpe-miR-318>dps-miR-318>dse-miR-318>dsi-miR-318>dvi-miR-318>dwi-miR-318>dya-miR-318). In conclusion, Cd stress possesses distinct female reproductive toxicity on P. pseudoannulata through impairing antioxidant system and synthesis of vitellin.
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Affiliation(s)
- Juan Wang
- College of Life Sciences, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Xianjin Peng
- College of Life Sciences, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Huilin Yang
- College of Resources & Environment, Hunan Agriculture University, Changsha, Hunan, 410128, China
| | - Bo Lv
- College of Life Sciences, Hunan Normal University, Changsha, Hunan, 410081, China
| | - Zhi Wang
- College of Life Sciences, Hunan Normal University, Changsha, Hunan, 410081, China.
| | - Qisheng Song
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA
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2
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Laino A, Cunningham M, Garcia F, Trabalon M. Residual vitellus and energetic state of wolf spiderlings Pardosa saltans after emergence from egg-sac until first predation. J Comp Physiol B 2020; 190:261-274. [PMID: 32078039 DOI: 10.1007/s00360-020-01265-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/10/2020] [Accepted: 02/07/2020] [Indexed: 11/29/2022]
Abstract
The aim of this study was to evaluate energetic source used by juveniles of a terrestrial oviparous invertebrate during the earliest periods of their life. Growth, behavioural activities and energy contents of Pardosa saltans spiderlings' residual vitellus were monitored during 8 days after their emergence from their egg-sac until they disperse autonomously. The life-cycle of juvenile after emergence can be divided into three periods: a gregarious while juveniles are aggregated on their mother, dismounting off their mother's back and dispersion. We present the first biochemical study of residual vitellus and energy expenditure during these three periods. At emergence, the mean weight of juveniles was 0.59 mg and energy stock from residual vitellus averaged 51 cal/g wet mass. During gregarious period, the weight of the juveniles aggregated on their mother did not vary significantly and juveniles utilized only 1 cal/day from their residual vitellus. During the period from dismounting until their first exogenous feed, juveniles lost weight and used 30% of their residual vitellus stock. Proteins from the residual vitellus contributed principally to their energy expenditure during this period: 1.5 µg protein/day. Juveniles' first exogenous feeding was observed 7-8 days after emergence, when 70% of residual vitellus energy had been utilized. Juveniles dispersed after eating, reconstituting an energy stock comparable to that observed at emergence from egg-sac (50 cal/g wet mass). This new energy stock contains mainly lipids unlike the energy stock from the residual vitellus.
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Affiliation(s)
- A Laino
- Instituto de Investigaciones Bioquímicas de La Plata "Prof. Dr. Rodolfo R. Brenner" (INIBIOLP), CCT-La Plata CONICET-UNLP, La Plata, Argentina
| | - M Cunningham
- Instituto de Investigaciones Bioquímicas de La Plata "Prof. Dr. Rodolfo R. Brenner" (INIBIOLP), CCT-La Plata CONICET-UNLP, La Plata, Argentina
| | - F Garcia
- Instituto de Investigaciones Bioquímicas de La Plata "Prof. Dr. Rodolfo R. Brenner" (INIBIOLP), CCT-La Plata CONICET-UNLP, La Plata, Argentina
| | - M Trabalon
- Université de Rennes 1, UMR-6552 CNRS EthoS, Campus de Beaulieu, 263 avenue du Général Leclerc, CS 74205, 35042, Rennes Cedex, France.
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3
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Eberhard WG, Gonzaga MO. Evidence that Polysphincta-group wasps (Hymenoptera: Ichneumonidae) use ecdysteroids to manipulate the
web-construction behaviour of their spider hosts. Biol J Linn Soc Lond 2019. [DOI: 10.1093/biolinnean/blz044] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- William G Eberhard
- Smithsonian Tropical Institute, Panama, Ancón, República de Panamáa
- Escuela de BiologÍa, Universidad de Costa Rica, Ciudad Universitaria, Costa Rica, USA
- Museum of Natural Science, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Marcelo O Gonzaga
- Instituto de Biologia, Universidade Federal de Uberlândia, MG, Brazil
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4
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Romero S, Laino A, Arrighetti F, García CF, Cunningham M. Vitellogenesis in spiders: first analysis of protein changes in different reproductive stages of Polybetes pythagoricus. J Comp Physiol B 2019; 189:335-350. [PMID: 30953127 DOI: 10.1007/s00360-019-01217-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/15/2019] [Accepted: 03/20/2019] [Indexed: 10/27/2022]
Abstract
Vitellogenesis represents one of the most vital processes of oviparous species during which various proteins, carbohydrates, and lipids are synthesized and stored inside the developing oocytes. Through analyzing protein changes in the midgut diverticula, hemolymph, and ovaries of females throughout the different vitellogenic stages of the spider Polybetes pythagoricus, we determined the origin of the different proteins involved in the formation of lipovitellins (LVs) along with the existence of a linkage between the hemocyanin and this vital process. An increase in the total protein content of the midgut diverticula, hemolymph, and ovary occurred throughout vitellogenesis followed by a decrease in those levels after laying. The presence of hemocyanin in egg and in LV2, as well as its accumulation in the ovary throughout the vitellogenesis process, was determined. Considering that all biologic processes depend on the correct structure and function of proteins, this study establishes, for the first time for the Order Araneae, the coexistence of three different origins of vitellogenesis-related proteins: one predominantly ovarian involving peptides of 120, 75, 46, and 30 kDa; another extraovarian one originated from the midgut diverticula and represented by a 170 kDa peptide, and a third hemolymphatic one, represented by the 67 kDa peptide.
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Affiliation(s)
- S Romero
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), Fac. Cs. Médicas, CCT-La Plata CONICET-UNLP, Calle 60 y 120, 1900, La Plata, Argentina
| | - A Laino
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), Fac. Cs. Médicas, CCT-La Plata CONICET-UNLP, Calle 60 y 120, 1900, La Plata, Argentina
| | - F Arrighetti
- CONICET-Museo Argentino de Ciencias Naturales, Av. Ángel Gallardo 470, C1405DJR, Ciudad Autónoma de Buenos Aires, Argentina
| | - C F García
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), Fac. Cs. Médicas, CCT-La Plata CONICET-UNLP, Calle 60 y 120, 1900, La Plata, Argentina.
| | - M Cunningham
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), Fac. Cs. Médicas, CCT-La Plata CONICET-UNLP, Calle 60 y 120, 1900, La Plata, Argentina.
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5
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Bednarek AW, Sawadro MK, Nicewicz Ł, Babczyńska AI. Vitellogenins in the spider Parasteatoda tepidariorum - expression profile and putative hormonal regulation of vitellogenesis. BMC DEVELOPMENTAL BIOLOGY 2019; 19:4. [PMID: 30849941 PMCID: PMC6408786 DOI: 10.1186/s12861-019-0184-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 02/27/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Knowledge about vitellogenesis in spiders is rudimentary. Therefore, the aim of study was to check the vitellogenin (Vg) presence in various tissues of the female spider Parasteatoda tepidariorum, determine when and where vitellogenesis starts and takes place, and the putative role of selected hormones in the vitellogenesis. RESULTS Here we show two genes encoding Vg (PtVg4 and PtVg6) in the genome of the spider P. tepidariorum. One gene PtVg4 and three subunits of Vg (250 kDa, 47 kDa and 30 kDa) are expressed in the midgut glands, ovaries and hemolymph. Heterosynthesis of the Vg in the midgut glands and autosynthesis in the ovaries were observed. Vitellogenesis begins in the last nymphal stage in the midgut glands (heterosynthesis). However, after sexual maturity is reached, Vg is also synthesized in the ovaries (autosynthesis). Changes in the PtVg4 expression level and in the Vg concentration after treatment with 20-hydroxyecdysone, a juvenile hormone analog (fenoxycarb) and an antijuvenoid compound (precocene I) were observed. Therefore, we propose a hypothetical model for the hormonal regulation of vitellogenesis in P. tepidariorum. CONCLUSIONS Our results are the first comprehensive study on spider vitellogenesis. In our opinion, this work will open discussion on the evolutionary context of possible similarities in the hormonal control of vitellogenesis between P. tepidariorum and other arthropods as well as their consequences.
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Affiliation(s)
- Agata W. Bednarek
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, PL40007 Katowice, Poland
| | - Marta K. Sawadro
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, PL40007 Katowice, Poland
| | - Łukasz Nicewicz
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, PL40007 Katowice, Poland
| | - Agnieszka I. Babczyńska
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, PL40007 Katowice, Poland
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6
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Romero S, Laino A, Arrighetti F, Cunningham M, Garcia C. First study on lipid dynamics during the female reproductive cycle of Polybetes pythagoricus (Araneae: Sparassidae). CAN J ZOOL 2018. [DOI: 10.1139/cjz-2017-0222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Spiders are valuable to humans, not only for their role in health but also as biologic pest controllers. In oviparous species, lipids are the main energy source for embryo development and the growth and survival of larvae. Using the spider Polybetes pythagoricus (Holmberg, 1875) as an experimental model, we studied the fluctuations in lipids and fatty acids occurring in tissues related to vitellogenesis. Different reproductive stages (previtellogenesis, early vitellogenesis, vitellogenesis, and postvitellogenesis) were determined histologically. Gonadosomatic and hepatosomatic indices were first used in spiders. The midgut diverticula proved to be the organ with the highest lipid concentration, with triacylglycerols as the major component. Phospholipids were the principal lipids transported. In vitellogenesis, a major accumulation of lipids occurred in the ovary, principally phosphatidylethanolamine (41%); it probably synthesized in the midgut diverticula before being released into the hemolymph for transport and accumulation in the ovary. Phosphatidylethanolamine is possibly involved in maintaining membrane fluidity and in the function of the electron transport chain. The principal fatty acids in the different organs were palmitic, stearic, oleic, and linoleic acids. During vitellogenesis, the ovaries become enriched in polyunsaturated fatty acids. The lipid patterns in the male midgut diverticula, muscle, and hemolymph were similar to those of the previtellogenic or postvitellogenic females.
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Affiliation(s)
- S. Romero
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), CCT-La Plata CONICET-UNLP, Argentina
| | - A. Laino
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), CCT-La Plata CONICET-UNLP, Argentina
| | - F. Arrighetti
- CONICET-Museo Argentino de Ciencias Naturales, Av. Ángel Gallardo 470, C1405DJR Ciudad Autónoma de Buenos Aires, Argentina
| | - M. Cunningham
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), CCT-La Plata CONICET-UNLP, Argentina
| | - C.F. Garcia
- Instituto de Investigaciones Bioquímicas de la Plata Prof. Dr. Rodolfo R. Brenner (INIBIOLP), CCT-La Plata CONICET-UNLP, Argentina
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7
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Honda Y, Ishiguro W, Ogihara MH, Kataoka H, Taylor D. Identification and expression of nuclear receptor genes and ecdysteroid titers during nymphal development in the spider Agelena silvatica. Gen Comp Endocrinol 2017; 247:183-198. [PMID: 28174130 DOI: 10.1016/j.ygcen.2017.01.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 01/26/2017] [Accepted: 01/28/2017] [Indexed: 01/03/2023]
Abstract
Ecdysteroids play an essential role in the regulation of the molting processes of arthropods. Nuclear receptors of the spider Agelena silvatica that showed high homology with other arthropods especially in the functional domains were identified, two isoforms of ecdysone receptor (AsEcRA, AsEcRB), retinoid X receptor (AsRXR) and two isoforms of E75 (AsE75A, AsE75D). AsEcR and AsRXR mRNA did not show major changes in expression but occurred throughout the third instar nymphal stage. AsE75DBD was low or non-existent at first then showed a sudden increase from D7 to D10. On the other hand, AsE75D was expressed in the first half and decreased from D6 to D10. Ecdysteroid titers showed a peak on D6 in A. silvatica third instar nymphs. LC-MS/MS analysis of the ecdysteroid peak revealed only 20-hydroxyecdysone (20E) was present. The 20E peak on D6 and increase in AsE75DBD from D7 is likely a result of ecdysteroids binding to the heterodimer formed with constant expression of the AsEcR and AsRXR receptors. These findings indicate the mechanisms regulating molting widely conserved in insects and other arthropods also similarly function in spiders.
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Affiliation(s)
- Yoshiko Honda
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan; Research and Development Department, Fumakilla Limited, Hatsukaichi, Hiroshima, Japan.
| | - Wataru Ishiguro
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Mari H Ogihara
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan.
| | - Hiroshi Kataoka
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - DeMar Taylor
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
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8
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Sawadro M, Bednarek A, Babczyńska A. The current state of knowledge on the neuroactive compounds that affect the development, mating and reproduction of spiders (Araneae) compared to insects. INVERTEBRATE NEUROSCIENCE 2017; 17:4. [DOI: 10.1007/s10158-017-0197-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 04/03/2017] [Indexed: 12/19/2022]
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9
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Llandres AL, Figon F, Christidès JP, Mandon N, Casas J. Environmental and hormonal factors controlling reversible colour change in crab spiders. J Exp Biol 2013; 216:3886-95. [DOI: 10.1242/jeb.086470] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
SUMMARY
Habitat heterogeneity that occurs within an individual's lifetime may favour the evolution of reversible plasticity. Colour reversibility has many different functions in animals, such as thermoregulation, crypsis through background matching and social interactions. However, the mechanisms underlying reversible colour changes are yet to be thoroughly investigated. This study aims to determine the environmental and hormonal factors underlying morphological colour changes in Thomisus onustus crab spiders and the biochemical metabolites produced during these changes. We quantified the dynamics of colour changes over time: spiders were kept in yellow and white containers under natural light conditions and their colour was measured over 15 days using a spectrophotometer. We also characterised the chemical metabolites of spiders changing to a yellow colour using HPLC. Hormonal control of colour change was investigated by injecting 20-hydroxyecdysone (20E) into spiders. We found that background colouration was a major environmental factor responsible for colour change in crab spiders: individuals presented with white and yellow backgrounds changed to white and yellow colours, respectively. An ommochrome precursor, 3-OH-kynurenine, was the main pigment responsible for yellow colour. Spiders injected with 20E displayed a similar rate of change towards yellow colouration as spiders kept in yellow containers and exposed to natural sunlight. This study demonstrates novel hormonal manipulations that are capable of inducing reversible colour change.
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Affiliation(s)
- Ana L. Llandres
- Institut de Recherche sur la Biologie de l'Insecte, Université de Tours, UMR CNRS 635, Avenue Monge-Parc Grandmont, 37200, Tours, France
| | - Florent Figon
- Institut de Recherche sur la Biologie de l'Insecte, Université de Tours, UMR CNRS 635, Avenue Monge-Parc Grandmont, 37200, Tours, France
| | - Jean-Philippe Christidès
- Institut de Recherche sur la Biologie de l'Insecte, Université de Tours, UMR CNRS 635, Avenue Monge-Parc Grandmont, 37200, Tours, France
| | - Nicole Mandon
- Institut de Recherche sur la Biologie de l'Insecte, Université de Tours, UMR CNRS 635, Avenue Monge-Parc Grandmont, 37200, Tours, France
| | - Jérôme Casas
- Institut de Recherche sur la Biologie de l'Insecte, Université de Tours, UMR CNRS 635, Avenue Monge-Parc Grandmont, 37200, Tours, France
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10
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Bolzern A, Burckhardt D, Hänggi A. Phylogeny and taxonomy of European funnel-web spiders of theTegenaria−Malthonicacomplex (Araneae: Agelenidae) based upon morphological and molecular data. Zool J Linn Soc 2013. [DOI: 10.1111/zoj.12040] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
| | - Daniel Burckhardt
- Naturhistorisches Museum Basel; Augustinergasse 2; CH-4001; Basel; Switzerland
| | - Ambros Hänggi
- Naturhistorisches Museum Basel; Augustinergasse 2; CH-4001; Basel; Switzerland
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11
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Laino A, Cunningham M, Costa FG, Garcia CF. Energy sources from the eggs of the wolf spider Schizocosa malitiosa: isolation and characterization of lipovitellins. Comp Biochem Physiol B Biochem Mol Biol 2013; 165:172-80. [PMID: 23618789 DOI: 10.1016/j.cbpb.2013.04.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 04/17/2013] [Accepted: 04/18/2013] [Indexed: 11/19/2022]
Abstract
In oviparous species, proteins and lipids found in the vitellus form the lipoproteins called lipovitellins that are the major source of energy for the development, growth, and survival of the embryo. The energy resources provided by the lipovitellins have not yet been investigated in the Order Araneae. Using the wolf spider Schizocosa malitiosa (Lycosidae) as an experimental model, we identified and characterized the lipovitellins present in the cytosol, focusing on the energetic contribution of those lipoprotein particles in the vitellus. Two lipovitellins (LV) named SmLV1 and SmLV2 were isolated. SmLV1 is a high-density lipoprotein with 67% lipid and 3.6% carbohydrate, and SmLV2 is a very high-density lipoprotein with 9% lipid and 8.8% carbohydrate. Through electrophoresis in native conditions we observed that SmLV1 has a molecular mass of 559 kDa composed of three apolipoproteins of 116, 87, and 42 kDa, respectively. SmLV2 comprised several proteins composed of different proportions of the same subunits (135, 126, 109, and 70 kDa). The principal lipids of these lipovitellins are sphingomyelin + lysophosphatidylcholine, esterified sterols, and phosphatidylcholine. Lipovitellin-free cytosol contains abundant phospatidylcholine and triacylglyceride related to the yolk nuclei (the vitellus organizing center). The principal fatty acids of SmLV1 and SmLV2 are 18:2 n-6, 18:1 n-9, and 16:0. Spectrophotometry detected no pigments in either the lipovitellins or the cytosol. The egg caloric content was 92 cal/g, at proportions of 59.8% protein, 20.1% carbohydrate, and 19.9% lipid. SmLV1 and SmLV2 provided 19.5% and 17.1% of the calories, respectively. Both lipovitellins contribute mainly with proteins (15.8-18%), with the input of carbohydrates and lipids being lower than 1.3%.
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Affiliation(s)
- Aldana Laino
- Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP), CCT-La Plata CONICET-UNLP, Calle 60 y 120, 1900 La Plata, Argentina
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12
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Trabalon M, Blais C. Juvenile development, ecdysteroids and hemolymph level of metabolites in the spider Brachypelma albopilosum (Theraphosidae). JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL GENETICS AND PHYSIOLOGY 2012; 317:236-47. [PMID: 22311802 DOI: 10.1002/jez.1717] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 11/18/2011] [Accepted: 12/02/2011] [Indexed: 11/08/2022]
Abstract
In the present work, juvenile development and physiological state of mygalomorph Brachypelma albopilosum were investigated by means of individual rearing under controlled conditions. Males required 4-5 years for development from first juvenile instar to adulthood, passing through 8 to 12 juvenile molts. Females developed to adults in 5-6 years with a variable juvenile molt number from 9 to 13. The development and growth of males and females took place in a similar way until the last juvenile molt leading to subadults. Ecdysteroids, total lipid, cholesterol, and protein concentrations increased along with the different development instars in both males and females. After the last juvenile molt, spiders presented morphological and biochemical sex differences. Subadult and adulthood males were smaller in size and weight than females; hemolymph levels of ecdysteroids, total lipids, cholesterol, and glucose were higher in males. These physiological and biochemical differences can be correlated to the different sexual development between males and females.
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Affiliation(s)
- Marie Trabalon
- Department of Biology, Université Rennes 1, UMR-6552 CNRS Ethologie, Rennes, France.
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13
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Olsen CA, Kristensen AS, Strømgaard K. Niedermolekulare Verbindungen aus Spinnen als chemische Sensoren. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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14
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Olsen CA, Kristensen AS, Strømgaard K. Small molecules from spiders used as chemical probes. Angew Chem Int Ed Engl 2011; 50:11296-311. [PMID: 22034051 DOI: 10.1002/anie.201101599] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Indexed: 01/21/2023]
Abstract
Spiders are important species in ecological systems and as major predators of insects they are endowed with a plethora of low-molecular-weight natural products having intriguing biological activities. The isolation and biological characterization of these entities are well established, however, only very recently have these compounds been used as templates for the design, synthesis, and biological evaluation of synthetic analogues. In contrast, the investigation of compounds responsible for chemical communication between spiders is far less developed, but recently new light has been shed onto the area of pheromones and allomones from spiders. Herein, we recapitulate these recent results, put them into perspective with previous findings, and provide an outlook for future studies of these chemotypes.
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Affiliation(s)
- Christian A Olsen
- Department of Chemistry, Technical University of Denmark, Kgs. Lyngby, Denmark
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15
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Laino A, Cunningham ML, Heras H, Garcia F. Isolation and characterization of two vitellins from eggs of the spider Polybetes pythagoricus (Araneae: Sparassidae). Comp Biochem Physiol B Biochem Mol Biol 2011; 158:142-8. [PMID: 21056682 DOI: 10.1016/j.cbpb.2010.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Revised: 10/29/2010] [Accepted: 11/01/2010] [Indexed: 11/17/2022]
Affiliation(s)
- Aldana Laino
- Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP), CONICET-UNLP, 60 y 120 (1900) La Plata, Argentina
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16
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Trabalon M, Carapito C, Voinot F, Martrette JM, Van Dorsselaer A, Gilbert C, Bertile F. Differences in Brachypelma albopilosa (Theraphosidae) hemolymph proteome between subadult and adult females. ACTA ACUST UNITED AC 2010; 313:651-9. [PMID: 20717997 DOI: 10.1002/jez.636] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 07/07/2010] [Accepted: 07/13/2010] [Indexed: 11/11/2022]
Abstract
The changes in the hemolymph proteome of mygalomorph Brachypelma albopilosa females were examined for the first time in relation to their developmental stage (subadult and adult period). Seven distinct subunits of hemocyanin (a, b, c, d, e, f, and g chains), as well as actin were clearly identified and their sequence partly characterized using a combination of one- and two-dimensional gel electrophoresis and mass spectrometry. The different structures determined along with possible post-translational modifications may reflect a role of hemocyanin in molting, immunity, and reproduction. In addition, despite no precise identification, additional peptide sequences from eight protein bands (four bands >200 kDa and four bands in the 95-200 kDa mass range) were determined. As reported in other spider species, the putative corresponding structures are the coagulogen protein and/or lipoproteins (HDL-1, HDL-2, VHDL) for which quantitative differences between adult and subadult individuals could be related to the molting process and/or cuticle lipid and protein composition according to the developmental stage.
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Brown MR, Sieglaff DH, Rees HH. Gonadal ecdysteroidogenesis in arthropoda: occurrence and regulation. ANNUAL REVIEW OF ENTOMOLOGY 2009; 54:105-25. [PMID: 18680437 PMCID: PMC7205109 DOI: 10.1146/annurev.ento.53.103106.093334] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Ecdysteroids are multifunctional hormones in male and female arthropods and are stored in oocytes for use during embryogenesis. Ecdysteroid biosynthesis and its hormonal regulation are demonstrated for insect gonads, but not for the gonads of other arthropods. The Y-organ in the cephalothorax of crustaceans and the integument of ticks are sources of secreted ecdysteroids in adults, as in earlier stages, but the tissue source is not known for adults in many arthropod groups. Ecdysteroid metabolism occurs in several tissues of adult arthropods. This review summarizes the evidence for ecdysteroid biosynthesis by gonads and its metabolism in adult arthropods and considers the apparent uniqueness of ecdysteroid hormones in arthropods, given the predominance of vertebrate-type steroids in sister invertebrate groups and vertebrates.
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Affiliation(s)
- Mark R Brown
- Department of Entomology, University of Georgia, Athens, Georgia 30602, USA.
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Trabalon M, Niogret J, Legrand-Frossi C. Effect of 20-hydroxyecdysone on cannibalism, sexual behavior, and contact sex pheromone in the solitary female spider, Tegenaria atrica. Gen Comp Endocrinol 2005; 144:60-6. [PMID: 15955534 DOI: 10.1016/j.ygcen.2005.04.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2004] [Revised: 04/15/2005] [Accepted: 04/25/2005] [Indexed: 10/25/2022]
Abstract
We investigated the effect of exogenously administered 20-hydroxyecdysone (20E) on sexual behavior and on contact sex signals of adult females of the spider Tegenaria atrica. In untreated or control females cannibalism occurred in 36-47% of encounters, whereas no cannibalism at all was observed with 20E-treated females. The frequency of sexual receptivity was low (42%) in untreated or control females and high (100%) in 20E-treated females. Variability of female sexual behavior could be related to quantitative changes in web and cuticular compounds. We showed that 20E altered the production of polar contact sex pheromones on web and cuticle: methylesters and fatty acids are produced in higher amounts in 20E-treated females. Bioassays demonstrated clearly that methylesters and fatty acids of webs and cuticles were involved in attraction of males. Moreover, bioassays with synthetic substances showed that four fatty acids (myristic, pentadecanoic, hexadecanoic, and oleic acids) and one methylester (methyl stearate) are particularly effective in eliciting sexual behavior in males. In T. atrica, 20E inhibits cannibalism during sexual activity and changes sex pheromone production.
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Affiliation(s)
- Marie Trabalon
- Physiologie du Comportement, CEPE, UPR-CNRS 9010, 54506 Vandoeuvre-Les-Nancy Cédex, France.
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