Abstract:
:Oocyte counts, used as a measure of egg load, were compared among three different age groups (15, 30 and 45 days) of two polyphagous species of tephritid fruit flies, Anastrepha ludens and Anastrepha obliqua, which were exposed to varying conditions of diet (sucrose vs sucrose and protein), availability of oviposition substrate (present vs absent), adult female density (1, 2 and 4 females/cage), and semiochemical context (presence vs absence of male pheromones and fruit volatiles). In both species, oocyte counts were higher in older females and for females fed sucrose and protein than for females fed sucrose only. The presence of artificial oviposition substrates influenced oocyte counts in A. obliqua, but not in A. ludens. Female density influenced oocyte counts in both species. Females maintained in groups had higher egg loads than isolated females. Finally, preliminary evidence suggests that semiochemical context influenced oocyte counts. Counts were highest for females in a room containing both fruit volatiles and male pheromone, lowest for females in a room containing neither volatiles nor pheromone, and intermediate for females in rooms containing either volatiles or pheromone but not both. Our results suggest that egg load is influenced by environmental factors in different ways in these two species. Egg load in A. obliqua, a species whose host fruits are highly ephemeral, is responsive to access to the host resource. By contrast, in A. ludens, a species infesting less ephemeral fruit, female density and age played a more important role than host stimuli. The role of ovarian maturation and oviposition in mediating these effects, as well as implications for mass rearing and pest management, are discussed.
journal_name
J Insect Physioljournal_title
Journal of insect physiologyauthors
Aluja M,Díaz-Fleischer F,Papaj DR,Lagunes G,Sivinski Jdoi
10.1016/s0022-1910(01)00072-5keywords:
subject
Has Abstractpub_date
2001-09-01 00:00:00pages
975-988issue
9eissn
0022-1910issn
1879-1611pii
S0022191001000725journal_volume
47pub_type
杂志文章abstract::The rice brown planthopper, Nilaparvata lugens, is an important migratory pest in many rice planting areas of Asia. The typical wing dimorphism of N. lugens gives them flexibility to adapt to different environmental cues. As an important hormone in the insect's endocrine regulation, juvenile hormone (JH) has previousl...
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journal_title:Journal of insect physiology
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更新日期:2002-10-01 00:00:00
abstract::Qualitative and quantitative changes in haemolymph proteins in Heliothis virescens were observed in larvae injected with either Microplitis croceipes teratocytes or teratocyte secreted proteins (TSP). Haemolymph protein titres in hosts receiving either 0.5 or 1 larval equivalent (LE) of teratocytes were similar to tho...
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journal_title:Journal of insect physiology
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更新日期:2005-03-01 00:00:00
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更新日期:2012-07-01 00:00:00
abstract::Social environments can have a major impact on ageing profiles in many animals. However, such patterns in variation in ageing and their underlying mechanisms are not well understood, particularly because both social contact and isolation can be stressful. Here, we use Drosophila melanogaster fruitflies to examine sex-...
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更新日期:2017-10-01 00:00:00
abstract::The regulation of caste differentiation is essential to insect eusociality. Termite soldiers are sterile and cannot eat by themselves because they have specialized mouth morphology. Almost all termite species have a soldier caste, and the soldier ratio per colony is maintained at a low level, probably by elaborate reg...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.03.005
更新日期:2011-06-01 00:00:00
abstract::Body size and shape affect thermoregulatory properties of organisms, and in turn are believed to have shaped macroevolutionary patterns of morphological diversity across many taxa. However, it is less clear whether thermoregulation plays a role in shaping intraspecific morphological diversity such as sexual dimorphism...
journal_title:Journal of insect physiology
pub_type: 杂志文章
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更新日期:2008-03-01 00:00:00
abstract::The mechanism controlling the body color of hatchlings was studied for the desert locust, Schistocerca gregaria. A pheromonal factor secreted by gregarious female adults into the foam plugs of egg pods has been suggested to cause darkening in their progeny. We re-examined the role of this maternal factor by washing or...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2006.07.004
更新日期:2006-10-01 00:00:00
abstract::The male fruitfly, Drosophila melanogaster, transfers to his mate proteins that increase his reproductive success by causing changes in her behavior and physiology. Here we show that among the transferred proteins are ones with antibacterial activity. We performed Escherichia coli overlay assays of native PAGE or rena...
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pub_type: 杂志文章
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更新日期:2001-06-01 00:00:00
abstract::Flight behaviors in various insect species are closely correlated with their mechanical and neuronal properties. Compared to locusts and flies which have been intensively studied, moths have "intermediate" properties in terms of the neurogenic muscle activations, power generation by indirect muscles, and two-winged-in...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2011.08.002
更新日期:2011-11-01 00:00:00
abstract::Ultraviolet (UV) radiation produces reactive oxygen species (ROS) in mammals, where melatonin plays the role of a ROS scavenger. The melatonin synthetic enzyme arylalkylamine N-acetyltransferase (NAT) is a significant element in a possible ROS removal system. Changes in NAT activity and melatonin content were determin...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2008.06.005
更新日期:2008-07-01 00:00:00
abstract::The linden bug Pyrrhocoris apterus exhibits a robust diapause response to photoperiod. Photoperiod strongly affected basal levels of circadian gene transcripts in the gut, via the neuroendocrine system. Cryptochrome 2 (cry2) mRNA level was much higher in diapause promoting short days (SD) than in reproduction promotin...
journal_title:Journal of insect physiology
pub_type: 杂志文章
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更新日期:2013-09-01 00:00:00
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pub_type: 杂志文章
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journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2004.04.006
更新日期:2004-07-01 00:00:00
abstract::The major juvenile hormone (JH) homolog synthesized in vitro by the adult female Medfly (Ceratitis capitata) corpus allatum (CA) is JHB(3), with JH-III the minor homolog. Methyl-incorporation in vitro in post-eclosion virgin females is age-dependent. Basal activity occurs during the first four days post-eclosion and i...
journal_title:Journal of insect physiology
pub_type: 杂志文章
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更新日期:2003-06-01 00:00:00
abstract::Protein phosphatase 2A (PP2A) is a major serine-threonine protein phosphatase which regulates metabolism, transcription, RNA splicing, translation, differentiation, cell cycle, oncogenic transformation and signal transduction. PP2A-Aα, an isoform of PP2A-A, is a structural subunit of the PP2A complex. We identified th...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2013.03.006
更新日期:2013-06-01 00:00:00
abstract::Amblyseius californicus was introduced into the UK in the early 1990s as a biocontrol agent against glasshouse red spider mite Tetranychus urticae. This study investigated the effects of temperature on the establishment potential of A. californicus in the UK in the light of recent reports of their successful overwinte...
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pub_type: 杂志文章
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abstract::The sand fly Lutzomyia longipalpis is the vector of Leishmania infantum, the etiological agent of American visceral leishmaniasis. Despite its importance, until now the internal anatomy of the immature forms has never been described and little is known about their digestive processes. In nature, sand fly larvae feed o...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2007.06.005
更新日期:2007-11-01 00:00:00
abstract::The hemocytes phagocytosis in response to microorganisms may play an important role in the cellular immune responses of insects. Here, we have evaluated the effects of the platelet-activating factor (PAF) and eicosanoids in the phagocytosis of hemocyte monolayers of Rhodnius prolixus to the yeast Saccharomyces cerevis...
journal_title:Journal of insect physiology
pub_type: 杂志文章
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journal_title:Journal of insect physiology
pub_type: 杂志文章,评审
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更新日期:2017-01-01 00:00:00
abstract::Honeybee drinking is facilitated by a "mop-like" tongue, which helps honeybees suck in the sucrose solution from the environment. However, the liquid-transport mechanism from the pharynx to the crop, especially the natural link between abdominal pumping and dipping behavior on the sucrose solution intake, remains obsc...
journal_title:Journal of insect physiology
pub_type: 杂志文章
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更新日期:2019-01-01 00:00:00
abstract::Endoparasitoid insects have evolved mechanisms to counteract host immune defences. At oviposition, the endoparasitoid Venturia canescens injects virus-like particles (VLPs) together with the egg that interfere with the immune system of the host. These prevent encapsulation of the parasitoid egg. It has been shown that...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2003.09.001
更新日期:2003-12-01 00:00:00
abstract::Egg-laying in Locusta migratoria involves the control of a variety of complex behavioural patterns including those that regulate digging of the oviposition hole and retention of eggs during digging. These two behavioural patterns are under the control of central pattern generators (CPGs). The digging and egg-retention...
journal_title:Journal of insect physiology
pub_type: 杂志文章
doi:10.1016/j.jinsphys.2014.02.002
更新日期:2014-04-01 00:00:00