scholarly journals Morphological variation and life history changes of a Daphnia hyalina population exposed to Chaoborus flavicans larvae predation (L. Candia, Northern Italy)

2002 ◽  
Vol 61 (1) ◽  
pp. 41 ◽  
Author(s):  
Nicoletta RICCARDI ◽  
Gianluigi GIUSSANI ◽  
Laurence LAGORIO
Keyword(s):  
Life History ◽  
Morphological Variation ◽  
Northern Italy ◽  
Chaoborus Flavicans ◽  
Daphnia Hyalina

BIOLOGY OF THE ROSE STEM GALLER DIPLOLEPIS NODULOSA (HYMENOPTERA: CYNIPIDAE) AND ITS ASSOCIATED COMPONENT COMMUNITY IN CENTRAL ONTARIO

1997 ◽  
Vol 129 (6) ◽  
pp. 1121-1140 ◽  
Author(s):  
Scott E. Brooks ◽  
Joseph D. Shorthouse
Keyword(s):  
Life History ◽  
Seasonal Variation ◽  
Morphological Variation ◽  
Related Species ◽  
The Other ◽  
Component Community ◽  
The Rose

AbstractDiplolepis nodulosa (Beutenmüller) induces small, monothalamous, prosoplasmic galls in stem tissues of Rosa blanda Aiton. Adults and galls are redescribed and notes on distribution, host records, morphological variation, and a comparison with related species are presented. Galls are commonly attacked by the inquiline Periclistus pirata (Osten Sacken). Data on life history and mortality of inducers and inquilines, along with seasonal variation in gall density, were obtained from a study site near Sudbury. Ontario, in 1993 and 1994. Inquilines killed 55% of the inducer population in 1993 and 65% in 1994. The abundance and density of galls fluctuated over the 2 years; however, the proportion of galls modified by inquilines remained constant. Six species of parasitoids caused an additional 17% inducer mortality. Aprostocetus sp. was the dominant parasitoid of D. nodulosa, whereas the other five species were incidental. The assemblage of parasitoids associated with galls modified by P. pirata caused 13% inquiline mortality and include seven species, of which Eurytoma spp. and Caenacis sp. were dominant. The unique aspects of the D. nodulosa gall system are discussed.

scholarly journals The Bantam Sunfish, Lepomis Symmetricus

1977 ◽  
Vol 31 (1-10) ◽  
pp. 437-466 ◽  
Author(s):  
Brooks M. Burr
Keyword(s):  
Life History ◽  
Species Distribution ◽  
Morphological Variation ◽  
Museum Specimens ◽  
Southern Illinois ◽  
Life History Study

The bantam sunfish, described as Bohlke; Garrett S. Glodek; Tomio Lepomis symmetricus by Stephen A. Forbes in 1883, is one of the least known species in the genus, probably because of its small size, rarity over parts of its range, occurrence in rather inaccessible swamp habitats, and drab and nondescript appearance. This effort to remedy the gaps in our knowledge of the species reviews all published references to L. symmetricus. To supplement the meager information available, this report includes an analysis of morphological variation based on the study of museum specimens, an assessment of the species' distribution, and a life-history study based on periodic collections made at a study site in southern Illinois.

scholarly journals Molecular genetic, life-history and morphological variation in a coastal warm-temperate sciaenid fish: evidence for an upwelling-driven speciation event

2016 ◽  
Vol 43 (9) ◽  
pp. 1820-1831 ◽  
Author(s):  
Romina Henriques ◽  
Warren M. Potts ◽  
Warwick H. Sauer ◽  
Carmen V. Santos ◽  
Jerraleigh Kruger ◽  
...  
Keyword(s):  
Life History ◽  
Morphological Variation ◽  
Molecular Genetic ◽  
Speciation Event ◽  
Warm Temperate ◽  
Sciaenid Fish

Section 2 Summary—Functional Morphology and Ecology of Larval Forms

2018 ◽  
Keyword(s):  
Life History ◽  
Functional Morphology ◽  
Morphological Variation ◽  
Aquatic Environment ◽  
Molecular Variation ◽  
Form And Function ◽  
Life History Stages ◽  
Taxonomic Groups ◽  
And Function ◽  
Exogenous Nutrients

Larvae are intermediate life history stages between embryos and juvenile and/or reproductive stages, but this characteristic is about the only feature that unites the incredible diversity of larval forms. The majority of larval forms evolved in the sea and exhibit tremendous morphological, physiological, and molecular variation, many of which are potential adaptations to match form and function in the context of the aquatic environment. The three chapters in this section review how larvae from different taxonomic groups sort through and ingest exogenous nutrients and how environmental variation elicits morphological variation....

Sign in / Sign up

Export Citation Format

Share Document