Morphology of the nymphoid replacement reproductives in the neotropical termite Armitermes euamignathus (Isoptera, Termitidae, Nasutitermitinae)

Costa‐Leonardo, Ana M.; Barsotti, Raquel Cristina; Soares, Helena Xavier

doi:10.1002/(sici)1097-4687(199902)239:2<131::aid-jmor2>3.3.co;2-n

Cited by 7 publications

(17 citation statements)

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“…The mound-building termite A. euamignathus occurs in the Neotropical region from Venezuela to Paraguay (Araujo, 1977). The incidence of multiple replacement reproductives in this species had already been reported by Araujo (1958) and, recently, we reported the occurrence of multiple nymphoid reproductives in the presence of a primary king in isolated natural colonies of A. euamignathus (Costa-Leonardo et al, 1996). In the same study, in a region of cerrado vegetation where this species was dominant, the nests always had a primary pair and never contained replacement reproductives.…”

Section: Introductionsupporting

confidence: 84%

“…We reported the presence of multiple nymphoid replacements in field nests of A. euamignathus where the primary queen was absent (Costa-Leonardo et al, 1996). The present study indicates that ergatoid replacements can also appear in queenless colonies of A. euamignathus when nymphs are not available.…”

Section: Discussionsupporting

confidence: 51%

“…The appearance of multiple females is probably the cause of the occurrence of nymphoid polyandry (together with the primary king) in some natural nests without a primary queen. Large numbers of nymphoids including nymphoid males were verified in field nests of A. euamignathus (Costa-Leonardo et al, 1996), but the presence of this secundary polyandry seems to occur in the beginning of the orphaning when many nymphoid females arise. Reports of the presence of nymphoid replacement reproductives in Termitidae are abundant, but very little is known about their origin in termite colonies.…”

Section: Discussionmentioning

confidence: 97%

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Response to orphaning in two Neotropical termites: Armitermes euamignathus and Embiratermes festivellus

Costa–Leonardo

Soares

Barsotti

1998

Entomologia Exp Applicata

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In this paper we examine the potential of the termites Armitermes euamignathus Silvestri: 1901 and Embiratermes festivellus (Silvestri, 1901) (Isoptera, Termitidae, Nasutitermitinae) to produce neotenics experimentally. Three nests of the mound‐building termite A. euamignathus, from the Brazilian cerrado, had their primary queens removed in August 1994. After 12 months, only one mound survived; it had a normal appearance. In this healthy, orphaned colony we found the primary king, six physogastric nymphoid female replacement reproductives, two ergatoid female replacement reproductives, 46 nymphs, several presoldiers, soldiers, workers, larvae and many eggs. These data show that neotenics in A. euamignathus may originate from both workers and nymphs, but nymphoids are produced in larger numbers. The biometric study of nymphs and nymphoids suggests that these brachypterous neotenics were derived from third instar nymphs after a single moult or from four instar nymphs after a reduction of wing bud length. A piece of an E. festivellus nest with some third instar nymphs, soldiers and workers was kept under laboratory conditions. After 12 months, the whole experimental subcolony was examined and appeared to contain two pigmented nymphoid females, two pigmented nymphoid males, only one larva, seven nymphs of the same instar, 148 workers, five soldiers and many eggs. These results also indicate the capacity of the termite E. festivellus to produce nymphoid neotenics. These neotenic females were laying eggs, but they were not physogastric after a year, unlike some nymphoids of the same species collected from natural colonies.

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Section: Introductionsupporting

confidence: 84%

Section: Discussionsupporting

confidence: 51%

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Response to orphaning in two Neotropical termites: Armitermes euamignathus and Embiratermes festivellus

Costa–Leonardo

Soares

Barsotti

1998

Entomologia Exp Applicata

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“…In several Isoptera groups, when one of the primary reproductive dies or becomes old, they are replaced by secondary reproductives that can have several origins: "adultoids" are derived from the imagoes, "nymphoids" are derived from nymphs and retain the wing buds, "ergatoids" are derived from workers and have no evidence of wing buds (NOIROT 1969;WILSON 1971;BRIAN 1979;COSTA-LEONARDO et al 1996;THORNE 1996;MYLES 1999). If any of these reproductive types differentiates within a colony while primaries ones are still alive and reproducing, are called supplementary (THORNE 1996) and if they developed after primaries die, they will be replacement reproductives (MYLES 1999).…”

Section: Introductionmentioning

confidence: 99%

Multiple reproductives in nests of the Neotropical termite Constrictotermes cyphergaster (Isoptera, Termitidae, Nasutitermitinae)

Cunha

Brandão

2002

Rev. Bras. entomol.

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ABSTRACT. Constrictotermes cyphergaster (Silvester, 1901) builds arboreal nests in Brazilian Cerrado stricto sensu, which are frequently cohabited by inquilines termites and by termitophiles. In a study made at the Parque Estadual da Serra de Caldas Novas, Goiás, Brazil, there were four nests with multiple reproductives, and secondary reproductives were found in 26 nests. Nymphs of Inquilinitermes were more abundant (9,47%) than nymphs of C. cyphergaster (0,78%).

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“…These reproductives lose their wings and are known as primary reproductives (Nutting ; Costa‐Leonardo et al . ; Costa‐Leonardo & Haifig ).…”

Section: Introductionmentioning

confidence: 99%

First record of intersex in neotenic reproductives of the termite Cryptotermes brevis (Isoptera: Kalotermitidae)

Laranjo

Costa–Leonardo

2017

Entomological Science

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Drywood termites of the family Kalotermitidae present a very flexible developmental pattern, in which pseudergates are totipotent and may become reproductives. In this study, three colonies of Cryptotermes brevis headed by neotenic reproductives were used: (i) colony A, with a primary king and a neotenic queen; (ii) colony B, with a primary queen and a neotenic king; and (iii) colony C, with neotenic king and queen. The primary king from colony A and the neotenic king from colony B presented well‐developed reproductive systems, with conspicuous testicular lobes and cysts containing spermatozoa also observed in the seminal vesicles. The neotenic queen of colony A and the primary queen of colony B had ovaries with several oocytes in early developmental stages with some of them already vitellogenic and terminal, which suggests egg‐laying activity. Both of these queens presented the spermathecae lumen filled with spermatozoa. The queen of colony C had vitellogenic oocytes; however, the oocytes were not terminal and the lumen of spermathecae was devoid of spermatozoa and secretions. The seminal vesicles of colony C neotenic king have no spermatozoa. This king displayed a previtellogenic oocyte among its testicular lobes, which suggested that this individual was an intersex.

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Morphology of the nymphoid replacement reproductives in the neotropical termite Armitermes euamignathus (Isoptera, Termitidae, Nasutitermitinae)

Cited by 7 publications

References 0 publications

Response to orphaning in two Neotropical termites: Armitermes euamignathus and Embiratermes festivellus

Response to orphaning in two Neotropical termites: Armitermes euamignathus and Embiratermes festivellus

Multiple reproductives in nests of the Neotropical termite Constrictotermes cyphergaster (Isoptera, Termitidae, Nasutitermitinae)

First record of intersex in neotenic reproductives of the termite Cryptotermes brevis (Isoptera: Kalotermitidae)

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