INTRASPECIFIC COMPETITION IN LARVAE OF THE ANT-LION MORTER SP AND INTERSPECIFIC INTERACTIONS WITH MACROLEON-QUINQUEMACULATUS

D Griffiths

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    1. Intraspecific competition was investigated in the pit-digging larvae of the ant-lion Morter sp., which normally occurs at low density in a food-rich habitat. 2. Morter larvae interact by displays, challenges, and sand tossing. Challenges/displays affected pit spacing while sand tossing affected pit size. Pit ownership determined the outcome of contests regardless of the relative sizes or feeding condition of the contestants. 3. Competition had no effect on the pit size of winners but losers showed a density dependent reduction in pit size. Interference competition caused a density dependent reduction in larval growth rates. 4. Macroleon quinquemaculatus (Hagen) always won contests with Morter, even when smaller. Cannibalism occurred in 60% of these contests. 5. Little intraspecific competition occurs in Morter in the field. Morter is more willing to incur energy costs than Macroleon.
    LanguageEnglish
    Pages193-201
    JournalEcological Entomology
    Volume16
    Issue number2
    Publication statusPublished - May 1991

    Fingerprint

    Myrmeleontidae
    intraspecific competition
    larvae
    sand
    energy costs
    cannibalism
    ownership
    spatial distribution
    habitats

    Cite this

    @article{fd382a007c72458f835f7c37e1d38d09,
    title = "INTRASPECIFIC COMPETITION IN LARVAE OF THE ANT-LION MORTER SP AND INTERSPECIFIC INTERACTIONS WITH MACROLEON-QUINQUEMACULATUS",
    abstract = "1. Intraspecific competition was investigated in the pit-digging larvae of the ant-lion Morter sp., which normally occurs at low density in a food-rich habitat. 2. Morter larvae interact by displays, challenges, and sand tossing. Challenges/displays affected pit spacing while sand tossing affected pit size. Pit ownership determined the outcome of contests regardless of the relative sizes or feeding condition of the contestants. 3. Competition had no effect on the pit size of winners but losers showed a density dependent reduction in pit size. Interference competition caused a density dependent reduction in larval growth rates. 4. Macroleon quinquemaculatus (Hagen) always won contests with Morter, even when smaller. Cannibalism occurred in 60{\%} of these contests. 5. Little intraspecific competition occurs in Morter in the field. Morter is more willing to incur energy costs than Macroleon.",
    author = "D Griffiths",
    year = "1991",
    month = "5",
    language = "English",
    volume = "16",
    pages = "193--201",
    journal = "Ecological Entomology",
    issn = "0307-6946",
    number = "2",

    }

    INTRASPECIFIC COMPETITION IN LARVAE OF THE ANT-LION MORTER SP AND INTERSPECIFIC INTERACTIONS WITH MACROLEON-QUINQUEMACULATUS. / Griffiths, D.

    In: Ecological Entomology, Vol. 16, No. 2, 05.1991, p. 193-201.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - INTRASPECIFIC COMPETITION IN LARVAE OF THE ANT-LION MORTER SP AND INTERSPECIFIC INTERACTIONS WITH MACROLEON-QUINQUEMACULATUS

    AU - Griffiths, D

    PY - 1991/5

    Y1 - 1991/5

    N2 - 1. Intraspecific competition was investigated in the pit-digging larvae of the ant-lion Morter sp., which normally occurs at low density in a food-rich habitat. 2. Morter larvae interact by displays, challenges, and sand tossing. Challenges/displays affected pit spacing while sand tossing affected pit size. Pit ownership determined the outcome of contests regardless of the relative sizes or feeding condition of the contestants. 3. Competition had no effect on the pit size of winners but losers showed a density dependent reduction in pit size. Interference competition caused a density dependent reduction in larval growth rates. 4. Macroleon quinquemaculatus (Hagen) always won contests with Morter, even when smaller. Cannibalism occurred in 60% of these contests. 5. Little intraspecific competition occurs in Morter in the field. Morter is more willing to incur energy costs than Macroleon.

    AB - 1. Intraspecific competition was investigated in the pit-digging larvae of the ant-lion Morter sp., which normally occurs at low density in a food-rich habitat. 2. Morter larvae interact by displays, challenges, and sand tossing. Challenges/displays affected pit spacing while sand tossing affected pit size. Pit ownership determined the outcome of contests regardless of the relative sizes or feeding condition of the contestants. 3. Competition had no effect on the pit size of winners but losers showed a density dependent reduction in pit size. Interference competition caused a density dependent reduction in larval growth rates. 4. Macroleon quinquemaculatus (Hagen) always won contests with Morter, even when smaller. Cannibalism occurred in 60% of these contests. 5. Little intraspecific competition occurs in Morter in the field. Morter is more willing to incur energy costs than Macroleon.

    M3 - Article

    VL - 16

    SP - 193

    EP - 201

    JO - Ecological Entomology

    T2 - Ecological Entomology

    JF - Ecological Entomology

    SN - 0307-6946

    IS - 2

    ER -