Species-specific non-physical interference competition among mosquito larvae.

Individuals of different sex, size or developmental stage can compete differently and hence contribute distinctively to population dynamics. In species with complex life cycles such as insects, competitive ability is often positively correlated with larval developmental stage. Yet, little is known o...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Alon Silberbush, Ido Tsurim, Ran Rosen, Yoel Margalith, Ofer Ovadia
Formato: article
Lenguaje:EN
Publicado: Public Library of Science (PLoS) 2014
Materias:
R
Q
Acceso en línea:https://doaj.org/article/12fe761baffe4220898486c74107422e
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:12fe761baffe4220898486c74107422e
record_format dspace
spelling oai:doaj.org-article:12fe761baffe4220898486c74107422e2021-11-18T08:32:17ZSpecies-specific non-physical interference competition among mosquito larvae.1932-620310.1371/journal.pone.0088650https://doaj.org/article/12fe761baffe4220898486c74107422e2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24558406/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Individuals of different sex, size or developmental stage can compete differently and hence contribute distinctively to population dynamics. In species with complex life cycles such as insects, competitive ability is often positively correlated with larval developmental stage. Yet, little is known on how the development and survival of early-instars is influenced by interference from late-instar larvae, especially at low densities when exploitative competition is expected to be negligible. Furthermore, the specificity and mechanisms by which interference competition operates are largely unknown. We performed two complementary experiments aiming to quantify the competitive effects of late instar Ochlerotatus caspius on early instar larvae at low densities and under high resource supply rate. The first experiment examined the net effect of interference by 4(th) on 1(st) instar O. caspius larvae, relative to the effect of 1(st) instars on themselves. The second experiment examined the effect of species-specific, non-physical interference competition (i.e., cage larvae) by 4(th) on 1(st) instar O. caspius larvae at low or high densities. Specifically, we compared the responses of O. caspius larvae raised in the presence of caged con- or hetero-specific, Culiseta longiareolata, with that of larvae in the empty-cage control group. As expected, interference from late instar larvae had a net negative effect on the development rate of first instars. In contrast, the presence of caged con-specifics (non-physical interference) accelerated the development rate of O. caspius, however, this pattern was only evident at the low density. Notably, no such pattern was detected in the presence of caged hetero-specifics. These results strongly suggest the existence of species-specific growth regulating semiochemicals.Alon SilberbushIdo TsurimRan RosenYoel MargalithOfer OvadiaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 2, p e88650 (2014)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Alon Silberbush
Ido Tsurim
Ran Rosen
Yoel Margalith
Ofer Ovadia
Species-specific non-physical interference competition among mosquito larvae.
description Individuals of different sex, size or developmental stage can compete differently and hence contribute distinctively to population dynamics. In species with complex life cycles such as insects, competitive ability is often positively correlated with larval developmental stage. Yet, little is known on how the development and survival of early-instars is influenced by interference from late-instar larvae, especially at low densities when exploitative competition is expected to be negligible. Furthermore, the specificity and mechanisms by which interference competition operates are largely unknown. We performed two complementary experiments aiming to quantify the competitive effects of late instar Ochlerotatus caspius on early instar larvae at low densities and under high resource supply rate. The first experiment examined the net effect of interference by 4(th) on 1(st) instar O. caspius larvae, relative to the effect of 1(st) instars on themselves. The second experiment examined the effect of species-specific, non-physical interference competition (i.e., cage larvae) by 4(th) on 1(st) instar O. caspius larvae at low or high densities. Specifically, we compared the responses of O. caspius larvae raised in the presence of caged con- or hetero-specific, Culiseta longiareolata, with that of larvae in the empty-cage control group. As expected, interference from late instar larvae had a net negative effect on the development rate of first instars. In contrast, the presence of caged con-specifics (non-physical interference) accelerated the development rate of O. caspius, however, this pattern was only evident at the low density. Notably, no such pattern was detected in the presence of caged hetero-specifics. These results strongly suggest the existence of species-specific growth regulating semiochemicals.
format article
author Alon Silberbush
Ido Tsurim
Ran Rosen
Yoel Margalith
Ofer Ovadia
author_facet Alon Silberbush
Ido Tsurim
Ran Rosen
Yoel Margalith
Ofer Ovadia
author_sort Alon Silberbush
title Species-specific non-physical interference competition among mosquito larvae.
title_short Species-specific non-physical interference competition among mosquito larvae.
title_full Species-specific non-physical interference competition among mosquito larvae.
title_fullStr Species-specific non-physical interference competition among mosquito larvae.
title_full_unstemmed Species-specific non-physical interference competition among mosquito larvae.
title_sort species-specific non-physical interference competition among mosquito larvae.
publisher Public Library of Science (PLoS)
publishDate 2014
url https://doaj.org/article/12fe761baffe4220898486c74107422e
work_keys_str_mv AT alonsilberbush speciesspecificnonphysicalinterferencecompetitionamongmosquitolarvae
AT idotsurim speciesspecificnonphysicalinterferencecompetitionamongmosquitolarvae
AT ranrosen speciesspecificnonphysicalinterferencecompetitionamongmosquitolarvae
AT yoelmargalith speciesspecificnonphysicalinterferencecompetitionamongmosquitolarvae
AT oferovadia speciesspecificnonphysicalinterferencecompetitionamongmosquitolarvae
_version_ 1718421666780938240