Ultrastructure of the larval antenna of Tenebrio molitor L. (Coleoptera: Tenebrionidae): structure of the trichoid and uniporous peg sensilla

1982 ◽  
Vol 60 (7) ◽  
pp. 1528-1544 ◽  
Author(s):  
J. W. Bloom ◽  
R. Y. Zacharuk ◽  
A. E. Holodniuk
Keyword(s):  
Tenebrio Molitor ◽  
Instar Larva ◽  
Terminal Segment ◽  
Sheath Cell ◽  
Dendrite Bundles ◽  
Tubular Body ◽  
Coleoptera Tenebrionidae ◽  
Sheath Cells

The antenna of the final instar larva of Tenebrio molitor has three segments. The reduced third (terminal) segment bears a large trichoid sensillum, four uniporous peg sensilla, one blunt tipped peg sensillum, and one papillate sensillum. The second segment bears a very large multiporous placoid sensillum, three uniporous peg sensilla, one blunt-tipped peg sensillum, and one papillate sensillum. The numbers and arrangement of these sensilla are usually stereotyped, but variations occur.The trichoid sensillum is a long, thin, unsocketed, aporous hair. It is innervated by two (sometimes one) bipolar neurones and has five sheath cells. The three sheath cells which distally delimit the large sensillar sinus have extremely elaborate microvillate inner borders. The uniporous peg sensillum is a short, stout, socketed peg with a single terminal pore. It is innervated by two to six (usually six) bipolar neurones. The dendrite from one of these always ends as a tubular body in the base, while the dendrites from the others extend to the tip of the peg. This sensillum has a small sensillar sinus and only four sheath cells. The inner sheath cell of both types of sensilla forms a cylindrical, nonlapped sleeve around the dendrite bundles.

Fine structure of sensilla on the ovipositor of the tephritid fly Urophora affinis

1986 ◽  
Vol 64 (4) ◽  
pp. 973-984 ◽  
Author(s):  
R. Y. Zacharuk ◽  
R. M. K. W. Lee ◽  
D. E. Berube
Keyword(s):  
Fine Structure ◽  
Epidermal Cell ◽  
Fruit Flies ◽  
Sheath Cell ◽  
Outer Sheath ◽  
Dendritic Segment ◽  
Tubular Body ◽  
Tubular Bodies ◽  
Sheath Cells

There are four types of sensilla on the ovipositor blade of Urophora affinis Frauenfeld, one more than was observed on three other species of fruit flies studied by other authors. Three of the types, uniporous gustatory pegs, campaniform organs, and tactile short hairs are common to the four species and generally are in similar positions on the blade. The fourth, uniporous gustatory plates, were noted in U. affinis only. The chemosensilla are innervated by three chemosensory dendrites that terminate below the pore and a mechanosensory dendrite with a tubular body that is attached to a basal cuticular apodeme of the covering cuticle. The dendritic tubular bodies of the campaniform organs and tactile hairs terminate parallel to the surface in a right-angular bend, where they are attached to basal apodemes of the covering cuticle. The chemosensilla and tactile hairs have individual outer and inner sheath cells, but the campaniform organs have individual inner sheath cells only. The part of the ciliary dendritic segment that is encased by the dendritic sheath passes through an epidermal cell, often with several sensilla sharing the same epidermal cell in place of an outer sheath cell. The role of these sensilla during oviposition is discussed.

Ultrastructure of the larval antenna of Tenebrio molitor L. (Coleoptera: Tenebrionidae): structure of the blunt-tipped peg and papillate sensilla

1982 ◽  
Vol 60 (7) ◽  
pp. 1545-1556 ◽  
Author(s):  
J. W. Bloom ◽  
R. Y. Zacharuk ◽  
A. E. Holodniuk
Keyword(s):  
Central Zone ◽  
Tenebrio Molitor ◽  
Accessory Cells ◽  
Coleoptera Tenebrionidae ◽  
Sheath Cells

Each antenna of a final instar Tenebrio molitor larva has two blunt-tipped pegs and two papillate sensilla. The former are short pegs with fluted cuticle and a terminal moulting pore and are set in deep sockets. Two large microtubule-filled dendrites fill a dense dendritic sheath within the peg; below the base of the peg they are joined by a lamellate dendrite and a dendrite resembling a scolopidial cilium. There are four accessory cells, the innermost resembling a scolopale cell. This sensillum may be thermo- and hygro-receptive.Superficially the papillate sensillum is radially symmetrical with a central zone of small cuticular papillae surrounded by one or two rings of smooth cuticle. Three or four dendrites (of five) end under a turret of longer papillae at the center of the papillate cuticle. Fine pores from the dendritic canal extend to the surface between the papillae. One or two dendrites, one of which may be lamellate, end well below the end organ. There are five accessory cells. The sensillar and ciliary sinuses are large and the bounding membranes of the sheath cells highly elaborated. The function of this sensillum is uncertain.

Ultrastructure of the aporous sensilla on the galea of larval Mamestra configurata (Walker) (Lepidoptera: Noctuidae)

1994 ◽  
Vol 72 (11) ◽  
pp. 2032-2054 ◽  
Author(s):  
Vonnie D. C. Shields
Keyword(s):  
Distal Portion ◽  
Sheath Cell ◽  
Mamestra Configurata ◽  
Bipolar Neuron ◽  
Campaniform Sensillum ◽  
Tubular Body ◽  
Lepidoptera Noctuidae ◽  
Sheath Cells

The galea of fifth-instar Bertha armyworms, Mamestra configurata, has three types of aporous sensilla: one spire-shaped basiconic peg, two short basiconic pegs, and one campaniform sensillum. The spire-shaped peg is set in an inflexible socket, innervated by three bipolar neurons, and enveloped by three sheath cells. One microtubule-laden dendrite completely fills the distal portion of the dendritic sheath and ends within the peg. It is joined by a lamellate and a scolopidium-like dendrite that end near and below the base of the peg, respectively. The ciliary sinus is large and the membrane of the enveloping inner sheath cell is highly elaborate. This sensillum exhibits features characteristic of thermo-hygrosensilla. The short basiconic pegs and campaniform sensillum are each innervated by a single bipolar neuron and each is associated with three sheath cells. In both sensilla, the dendrite ends in a tubular body, typical of mechanosensilla.

KEMAMPUAN BERBAGAI TINGKATAN STADIUM LARVA KUMBANG Tenebrio molitor L. (COLEOPTERA : TENEBRIONIDAE) DALAM MENGKONSUMSI STYROFOAM (POLYSTYRENE)

2017 ◽  
Vol 4 (2) ◽  
pp. 37-42
Author(s):  
Deasy Vidya Carolina Manullang ◽  
Nismah Nukmal ◽  
Suratman Suratman
Keyword(s):  
Tenebrio Molitor ◽  
Instar Larva ◽  
Coleoptera Tenebrionidae

Kumbang Tenebrio molitor atau yang lebih dikenal sebagai ulat hongkong, memiliki nilai ekonomis karena dapat digunakan sebagai pakan ternak maupun obat bagi manusia dan mudah dibudidayakan. Ulat hongkong belum dimanfaatkan secara maksimal, sementara ulat hongkong secara alami memiliki manfaat yang besar sebagai pengurai senyawa organik dan anorganik di alam, dari penelitian terakhir diketahui dapat mengurai styrofoam. Penelitian ini dilaksanakan pada Juli-Agustus 2016 di Laboratorium Zoologi Jurusan Biologi Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Lampung dengan tujuan untuk mengetahui kemampuan berbagai tingkatan stadium larva ulat hongkong dalam mengkonsumsi styrofoam. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), dengan 10 instar larva ulat hongkong sebagai perlakuan dan 3 kali pengulangan. Data yang diperoleh dianalisis menggunakan Analisis Ragam (ANARA) dan dilanjutkan uji BNT (Beda Nyata Terkecil) pada taraf beda nyata 5% serta dilakukan analisis korelasi antara jumlah styrofoam yang dimakan dengan berat serta panjang ulat hongkong. Hasil analisis ragam menunjukkan bahwa pakan styrofoam mempengaruhi berat dan panjang ulat hongkong, serta lama stadium ulat hongkong (p < 0,05). Hasil analisis korelasi antara berat ulat hongkong dan jumlah pakan yang dimakan menunjukan adanya hubungan positif yang sangat kuat (r = 0,96), dan pada korelasi antara panjang ulat hongkong dan jumlah pakan yang dimakan menunjukkan adanya hubungan postif yang kuat (r = 0,66).

Ultrastructure of the uniporous sensilla on the galea of larval Mamestra configurata (Walker) (Lepidoptera: Noctuidae)

1994 ◽  
Vol 72 (11) ◽  
pp. 2016-2031 ◽  
Author(s):  
Vonnie D. C. Shields
Keyword(s):  
Sheath Cell ◽  
Bright Field ◽  
Mamestra Configurata ◽  
Outer Sheath ◽  
Transmission Electron ◽  
Campaniform Sensillum ◽  
Tubular Body ◽  
Styloconic Sensillum ◽  
Lepidoptera Noctuidae ◽  
Sheath Cells

The structure and innervation of sensilla on the galea of fifth-instar Bertha armyworms, Mamestra configurata, were examined using bright-field light, scanning electron, and transmission electron microscopy. Four sensillar types were identified. The galea bears two uniporous styloconic sensilla, one aporous spire-shaped basiconic sensillum, two aporous basiconic sensilla, and one campaniform sensillum. The uniporous styloconic sensillum consists of a small socketed peg inserted into a large cone or style. Each styloconic sensillum is innervated by five bipolar neurons and associated with three sheath cells. Four distal dendrites end in the peg at various levels beneath the pore and the fifth ends in a tubular body at the base of the peg. The intermediate and outer sheath cells enclose a very large liquor-filled sensillar sinus. The inner sheath cell forms a nonlapped cylindrical sleeve around the neurons. These sensilla exhibit features of contact chemosensilla.

Ultrastructure of a terminal chordotonal sensillum in larval antennae of the yellow mealworm, Tenebrio molitor L.

1981 ◽  
Vol 59 (3) ◽  
pp. 515-524 ◽  
Author(s):  
J. W. Bloom ◽  
R. Y. Zacharuk ◽  
A. E. Holodniuk
Keyword(s):  
Extracellular Matrix ◽  
Basement Membrane ◽  
Tenebrio Molitor ◽  
Instar Larva ◽  
Terminal Segment ◽  
Type I ◽  
Bipolar Neuron ◽  
The Third ◽  
The Third Terminal ◽  
Typical Type

The third (terminal) segment of the antenna of the final instar larva of Tenebrio molitor contains a single, unusually positioned and attached chordotonal sensillum. This sensillum consists of four cells: a microtubule-filled attachment cell anchoring the sensillum in the basement membrane-like extracellular matrix of the segment, a scolopale cell containing a strongly developed fibrous scolopale ensheathing the dendrite, a typical type I bipolar neuron, and a basal glial cell. The ultrastructure of this sensillum and its relationships to other antennal structures are described and compared with other chordotonal sensilla reported in the literature.

scholarly journals KEMAMPUAN BERBAGAI TINGKATAN STADIUM LARVA KUMBANG Tenebrio molitor L. (COLEOPTERA : TENEBRIONIDAE) DALAM MENGKONSUMSI STYROFOAM (POLYSTYRENE)

2018 ◽  
Vol 5 (1) ◽  
pp. 83-88
Author(s):  
Deasy Vidya Carolina Manullang ◽  
Nismah Nukmal ◽  
Suratman Umar
Keyword(s):  
Tenebrio Molitor ◽  
Instar Larva ◽  
Coleoptera Tenebrionidae

Kumbang Tenebrio molitor atau yang lebih dikenal sebagai ulat hongkong, memiliki nilai ekonomis karena dapat digunakan sebagai pakan ternak maupun obat bagi manusia dan mudah dibudidayakan. Ulat hongkong belum dimanfaatkan secara maksimal, sementara ulat hongkong secara alami memiliki manfaat yang besar sebagai pengurai senyawa organik dan anorganik di alam, dari penelitian terakhir diketahui dapat mengurai styrofoam. Penelitian ini dilaksanakan pada Juli-Agustus 2016 di Laboratorium Zoologi Jurusan Biologi Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Lampung dengan tujuan untuk mengetahui kemampuan berbagai tingkatan stadium larva ulat hongkong dalam mengkonsumsi styrofoam. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), dengan 10 instar larva ulat hongkong sebagai perlakuan dan 3 kali pengulangan. Data yang diperoleh dianalisis menggunakan Analisis Ragam (ANARA) dan dilanjutkan uji BNT (Beda Nyata Terkecil) pada taraf beda nyata 5% serta dilakukan analisis korelasi antara jumlah styrofoam yang dimakan dengan berat serta panjang ulat hongkong. Hasil analisis ragam menunjukkan bahwa pakan styrofoam mempengaruhi berat dan panjang ulat hongkong, serta lama stadium ulat hongkong (p < 0,05). Hasil analisis korelasi antara berat ulat hongkong dan jumlah pakan yang dimakan menunjukan adanya hubungan positif yang sangat kuat (r = 0,96), dan pada korelasi antara panjang ulat hongkong dan jumlah pakan yang dimakan menunjukkan adanya hubungan postif yang kuat (r = 0,66).

scholarly journals POTENCIAL REPRODUTIVO E DE SOBREVIVÊNCIA DE Podisus nigrispinus DALLAS (HETEROPTERA: PENTATOMIDAE) SOBRE Thyrinteina arnobia STOLL (LEPIDOPTERA: GEOMETRIDAE) E Tenebrio molitor L. (COLEOPTERA: TENEBRIONIDAE)

FLORESTA ◽  
2007 ◽  
Vol 37 (1) ◽  
Author(s):  
Anderson Mathias Holtz ◽  
José Cola Zanuncio ◽  
Claudinei Lima Oliveira ◽  
Dirceu Pratissoli ◽  
Angelo Pallini ◽  
...  
Keyword(s):  
Tenebrio Molitor ◽  
Heteroptera Pentatomidae ◽  
Coleoptera Tenebrionidae

O gênero Eucalyptus abrange as espécies arbóreas mais utilizadas para reflorestamento no Brasil. Devido ao seu elevado conteúdo de substâncias secundárias, esperava-se que os insetos não causassem sérios danos ao eucalipto. Contudo, muitos insetos, principalmente os da ordem Lepidoptera, tornaram-se sérias pragas na eucaliptocultura. O predador Podisus nigrispinus Dallas (Heteroptera: Pentatomidae) vem sendo utilizado contra insetos herbívoros tais como Thyrinteina arnobia Stoll (Lepidoptera: Geometridae), principal praga do eucalipto, mas não se têm dados sobre seu estabelecimento em áreas de eucalipto. Dessa forma, o objetivo deste trabalho foi avaliar o potencial reprodutivo e sobrevivência de P. nigrispinus sobre T. arnobia proveniente de eucalipto e larvas de Tenebrio molitor L. (Coleoptera: Tenebrionidae) provenientes de criação massal em laboratório. Os aspectos biológicos de P. nigrispinus foram melhores sobre pupas de T. molitor em comparação aos indivíduos criados sobre lagartas de T. arnobia. Provavelmente, as lagartas de T. arnobia estão seqüestrando as substâncias secundárias das plantas de eucalipto e utilizando em sua defesa contra predadores como P. Nigrispinus, e se estes inimigos naturais não estiverem adaptados a tais compostos, a sua performance no controle da praga e no seu próprio desenvolvimento podem ser afetados negativamente.

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