Fat Body Cells of Gynes and Queens of Four Species of Fungus Growing Ants (Hymenoptera: Formicidae: Attini); Relationship with the Vitellogenesis

Roma, Gislaine Cristina; Camargo‐Mathias, Maria Izabel; Bueno, Odair Corrêa

doi:10.3844/ajabssp.2006.48.57

Cited by 6 publications

(6 citation statements)

References 13 publications

(11 reference statements)

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“…Th e morphometric analysis of the fat body cells of the examined species showed that the areas of parietal and perivisceral trophocytes are signifi cantly larger in workers of derived species compared to those of basal ones, confi rming the obtained by Roma et al ( 2006b ) for gynes and queens of these same species. Th is suggests that during the evolution of these insects, there was a gradual increase in the volume of trophocytes of A. disciger and A. laevigata , probably due to greater presence of substances, such as proteins and lipids, and consequently an increase in their body size.…”

Section: Discussionsupporting

confidence: 50%

“…Th e morphological, morphometric, and ultrastructural study on the fat body of workers of C. rimosus and M. parallelus (basal species) and media workers of A. disciger and A. laevigata (derived species) revealed that this tissue is located mainly in the abdomen around organs (perivisceral) and right underneath the integument (parietal), as described for gynes and queens of these same species (Roma et al, 2006b ) and insects in general (Chapman, 1998 ;Gullan and Cranston, 2000 ).…”

Section: Discussionmentioning

confidence: 86%

“…As a result of this arrangement, basal lamina may fuse, although the plasma membrane and the cytoplasm of adjacent cells remain separated. Roma et al ( 2006b ) reported that these membranous expansions consisted of only membranous extensions. In the present study, however, cytoplasm was present in these expansions, indicating that they are extensions of the cell itself.…”

Section: Discussionmentioning

confidence: 97%

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Ultrastructural analysis of the fat body in workers of Attini ants (Hymenoptera: Formicidae)

Roma¹,

Bueno

Camargo‐Mathias³

2009

Animal Biol

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In the present study a comparative morphological analysis of the fat body cells of ant workers of the basal Attini species Cyphomyrmex rimosus and Mycetarotes parallelus , and the derived species Acromyrmex disciger and Atta laevigata was conducted. Th e results revealed that the fat body is located mainly in the abdomen around organs (perivisceral) and near the integument (parietal). Th e main cells observed are spherical or polygonal trophocytes with a slightly rough surface. Th e oenocytes, another cell type found, are closely associated with trophocytes, and present a spherical or polygonal shape and a smoother surface. Th e morphometric analysis showed that the area of trophocytes and oenocytes of C. rimosus and M. parallelus is signifi cantly smaller when compared to those of A. disciger and A. laevigata . In the cytoplasm of parietal and perivisceral trophocytes and oenocytes, electronlucent droplets (probably lipids) and electrondense granules (probably proteins) indicate the participation of these cells in the storage of these elements, while digestive vacuoles, residual bodies, and multivesicular bodies suggest a role in intracellular digestion. In perivisceral trophocytes and oenocytes of C. rimosus , the presence of mitochondria, lamellar rough endoplasmic reticulum, and Golgi complex suggests that these cells synthesize proteins. Based on these data, no signifi cant diff erences were observed between the fat body cells of basal and derived ants, except regarding the larger size of trophocytes and oenocytes of the derived species A. disciger and A. laevigata .

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Section: Discussionsupporting

confidence: 50%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 97%

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Ultrastructural analysis of the fat body in workers of Attini ants (Hymenoptera: Formicidae)

Roma¹,

Bueno

Camargo‐Mathias³

2009

Animal Biol

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“…Studies on the morphology and histology of the inner genitalia of Heteroptera predators males are recent and scarce mainly the effect of the food on these structures. However, the reproductive tracts of B. tabidus males present general aspect similar to those of other insects (Lemos et al, 2005b;Ortiz and CamargoMathias, 2006;Roma et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

The Reproductive Tract of the Males of the Zoophytophagous Predator <i>Brontocoris tabidus</i> (Signoret) (Heteroptera: Pentatomidae) with Different Diets and Ages

Lemos¹,

Ribeiro²,

Ramalho³

et al. 2011

American Journal of Agricultural and Biological Sciences

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Problem statement: Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) is a common and important species for the biological control of defoliating Lepidoptera caterpillars. Although it has a predatory feeding habit, this species make use of plant resources, which are essential for the maintenance of its population in laboratory colonies as well as in the field during periods of prey shortage. Thus B. tabidus has been considered an obligate zoophytophagous insect. However the impact of the age and herbivory on the morphology of the reproductive organs has been poorly studied in predatory Pentatomidae. The morphology of the reproductive tract of B. tabidus males with different ages and fed on different diets were analyzed. Approach: Nymphs of B. tabidus were maintained in the field with or without plants and fed on T. molitor pupae without plant (T 1 ); T. molitor pupae and Eucalyptus cloeziana plants (T 2 ); T. molitor pupae and Eucalyptus urophylla plants (T 3 ) or T. molitor pupae and guava plants (Psidium guajava L.) (T 4 ). Adults of B. tabidus obtained from each treatment were sexed in the first day of their emergence and thirty-six pairs were formed per treatment. Ten males of B. tabidus 15 and 21 days old, obtained in each treatment were dissected and the reproductive tract submitted to histological analyses. The total area of the testes of B. tabidus was measured and the data were submitted to the variance analysis and means between treatments were compared by the test of Newman-Keuls (p = 0.05). Results: The inner genitalia of B. tabidus males had red color and the testes with six follicles. Males 15 days old presented larger testes when fed on E. cloeziana (0.94 mm 2 ), E. urophylla (0.98 mm 2 ) or only T. molitor pupae (0.99 mm 2 ) than with guava plants (0.76 mm 2 ). Twenty-one days old B. tabidus males presented testes with similar size, independent of the diet. The testes follicles of B. tabidus had larger amount of spermatozoa with all diets and ages showing that the spermatogenesis process was completed. The testes of this predator showed similar histological characteristics with all diets. Conclusion: The herbivory change the morphology of the reproductive tract of B. tabidus males in field conditions resulting in testes with different sizes, but it does not affect the histology of the reproductive organ of this predator. Therefore, the food type supplied to B. tabidus males does not affect the spermatogenesis process in this natural enemy.

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“…head, thorax, etc.). An example may be the trophocytes of the reproductive castes of Attini ants which, in comparison with the workers, possess higher amounts of cytoplasmic vacuoles containing mainly lipids and proteins, which suggests that these compounds are used during the processes involving oogenesis and vitellogenesis 44 , 45 . In turn, Roma et al 46 think that large amounts of polysaccharides in the trophocytes of Mycetarotes parallelus and Atta laevigata workers are used as an energy source, especially by the muscle system during the foraging activities.…”

Section: Introductionmentioning

confidence: 99%

Segmentation of the subcuticular fat body in Apis mellifera females with different reproductive potentials

Strachecka

Olszewski

Kuszewska

et al. 2021

Sci Rep

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Evolution has created different castes of females in eusocial haplodiploids. The difference between them lies in their functions and vulnerability but above all in their reproductive potentials. Honeybee queens are highly fertile. On the other hand, the workers are facultatively sterile. However, rebel workers, i.e. workers that develop in a queenless colony, reproduce more often than normal workers. As a result, the fat body of these bees, which apart from acting as the energy reserve, is also the site of numerous metabolic processes, had to specialize in different functions perfected over millions of years of eusocial evolution. Assuming that the variety of functions manifests itself in the pleomorphic structure of the fat body cells, we predicted that also different parts of the fat body, e.g. from different segments of the abdomen, contain different sets of cells. Such differences could be expected between queens, rebels and normal workers, i.e. females with dramatically different reproductive potentials. We confirmed all these expectations. Although all bees had the same types of cells, their proportion and segmental character corresponded with the caste reproductive potential and physiological characteristics shaped in the evolutionary process. The females with an increased reproductive potential were characterized by the presence of oenocytes in the third tergite and high concentrations of compounds responsible for energy reserves, like glucose, glycogen and triglycerides. Queens had very large trophocytes, especially in the third tergite. Only in workers did we observe intercellular spaces in all the segments of the fat body, as well as high protein concentrations—especially in the sternite. As expected, the rebels combined many features of the queens and normal workers, what with other findings can help understand the ways that led to the origin of different castes in females of eusocial Hymenoptera.

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Fat Body Cells of Gynes and Queens of Four Species of Fungus Growing Ants (Hymenoptera: Formicidae: Attini); Relationship with the Vitellogenesis

Cited by 6 publications

References 13 publications

Ultrastructural analysis of the fat body in workers of Attini ants (Hymenoptera: Formicidae)

Ultrastructural analysis of the fat body in workers of Attini ants (Hymenoptera: Formicidae)

The Reproductive Tract of the Males of the Zoophytophagous Predator <i>Brontocoris tabidus</i> (Signoret) (Heteroptera: Pentatomidae) with Different Diets and Ages

Segmentation of the subcuticular fat body in Apis mellifera females with different reproductive potentials

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