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Larval morphology and development of Coptera occidentalis

The morphology and development of immature stages of the solitary internal parasitoid Coptera occidentalis were studied within the pupae of their factitious host, Ceratitis capitata. Parasitoid eggs are of the hymenopteriform type. Three larval instars are described. The first instar is of the mandi...

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Published in:BioControl (Dordrecht, Netherlands) Netherlands), 1999-01, Vol.44 (3), p.263-280
Main Authors: Kazimirova, M. (Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Zoology), Vallo, V
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creator Kazimirova, M. (Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Zoology)
Vallo, V
description The morphology and development of immature stages of the solitary internal parasitoid Coptera occidentalis were studied within the pupae of their factitious host, Ceratitis capitata. Parasitoid eggs are of the hymenopteriform type. Three larval instars are described. The first instar is of the mandibulate type bearing prominent submandibular appendages and a pair of terminal lobes on the last abdominal segment. The terminal lobes are covered with cuticular spines. The integument also bears cuticular spines arranged in paired dorsal welts on each of body segments V--IX. The second and third instar larvae are hymenopteriform with simple mandibles, reduced submandibular appendages and smooth integument. The third instar has an open tracheal system with three pairs of spiracles on segments II--IV. Considerable variation in development rates of parasitoid immature stages and high percentage of superparasitism were observed. Parasitoid eggs nearly doubled in size during the 96-h incubation. Development from egg to pupa took minimum 25 days and emergence of imagines started on day 42 after parasitization. Superparasitism was recorded in 56% of the examined hosts. The average number of eggs/host was 5.04 (range 1--22). Supernumerary occurrence of successive larval instars per one host was also observed.
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ispartof BioControl (Dordrecht, Netherlands), 1999-01, Vol.44 (3), p.263-280
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1573-8248
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source Springer Nature
subjects Appendages
BIOLOGICAL CONTROL
CERATITIS CAPITATA
CONTROL BIOLOGICO
Coptera occidentalis
Developmental stages
Eggs
HOST PARASITE RELATIONS
Host-parasite interactions
HYMENOPTERA
Instars
Integument
Larvae
Lobes
LUTTE BIOLOGIQUE
Morphology
PARASITISM
PARASITISME
PARASITISMO
PARASITOIDE
PARASITOIDES
PARASITOIDS
Pupae
RELACIONES HUESPED PARASITO
RELATION HOTE PARASITE
Segments
Spines
Spiracles
Supernumerary
Superparasitism
Tephritidae
title Larval morphology and development of Coptera occidentalis
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