Influence of previous host plants on the reproductive success of a polyphagous mite pest, Halotydeus destructor (Trombidiformes: Penthaleidae)

2018 ◽  
Vol 111 (2) ◽  
pp. 680-688 ◽  
Author(s):  
Xuan Cheng ◽  
Paul A Umina ◽  
Ary A Hoffmann
2014 ◽  
Vol 86 (1) ◽  
pp. 347-358 ◽  
Author(s):  
MORGANA S. SAZAN ◽  
ANTONIO DIEGO M. BEZERRA ◽  
BRENO M. FREITAS

Oil-collecting bees are the natural pollinators of oil-flower plants, but little is known about the pollination process and the effectiveness of their pollination service to the reproductive success of their host plants. In species of Byrsonima the reproductive system have been described as auto-compatible or self-incompatible. We studied the reproductive system of Byrsonima cydoniifolia, the fructification by means of short, medium and long-distance cross pollinations, the morphology and floral biology and the pollination interactions with species of oil-collecting bees. By means of controlled pollinations we found self-incompatibility caused by abortion of most self-pollinated flowers and demonstrated that the prevailing cross pollination ensuring the reproductive success of B. cydoniifolia is the long-distance cross pollination and Centridini bees; Epicharis nigrita, particularly, are the pollinators promoting the gene flow between genetically distinct populations.


2021 ◽  
pp. 111773
Author(s):  
Andrea C. Ueno ◽  
Pedro E. Gundel ◽  
Claudio M. Ghersa ◽  
Evgenios Agathokleous ◽  
M. Alejandra Martínez-Ghersa

1974 ◽  
Vol 5 (2) ◽  
pp. 151-160 ◽  
Author(s):  
Christer Wiklund

AbstractIn this paper a hypothesis is advanced according to which oligophagous insects have adopted two distinct strategies of habitat/host plant utilization, (1) a "monophagic strategy" being favoured in predictable habitats, making it possible to maximize reproductive success on one host plant per habitat only, (2) a "polyphagic strategy" being compulsively adopted in unpredictable habitats where two or more host plants per habitat have to be utilized for the maintenance of the species. For a partial preliminary test of this hypothesis the natural habitats and host plants of Papilio niachaon in Fennoscandia were investigated. The results indicate that (1) the predictable formations of inland wet-lands and coastal foreshores are the most important habitats (2) Peucedanum palustre, Angelica silvestris, Angelica archangelica ssp. littoralis and norvegica are the dominant host plants and (3) P. machaon appears to have adopted a "monophagic strategy" of habitat/host plant utilization in the predictable habitat categories.


EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
James P. Cuda ◽  
Patricia Prade ◽  
Carey R. Minteer-Killian

In the late 1970s, Brazilian peppertree, Schinus terebinthifolia Raddi (Sapindales: Anacardiaceae), was targeted for classical biological control in Florida because its invasive properties (see Host Plants) are consistent with escape from natural enemies (Williams 1954), and there are no native Schinus spp. in North America. The lack of native close relatives should minimize the risk of damage to non-target plants from introduced biological control agents (Pemberton 2000). [...]


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