Determinants of clinal variation in life history of dusky salamanders (Desmognathus ocoee): prey abundance and ecological limits on foraging time restrict opportunities for larval growth

2003 ◽  
Vol 259 (4) ◽  
pp. 411-421 ◽  
Author(s):  
Joseph Bernardo ◽  
Salvatore J. Agosta
Keyword(s):  
Life History ◽  
Larval Growth ◽  
Prey Abundance ◽  
Clinal Variation ◽  
History Of ◽  
Foraging Time

scholarly journals Early life ecology of the invasive lionfish (Pterois spp.) in the western Atlantic

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243138
Author(s):  
Jason Mostowy ◽  
Estrella Malca ◽  
Leif Rasmuson ◽  
Lourdes Vásquez-Yeomans ◽  
Trika Gerard ◽  
...  
Keyword(s):  
Life History ◽  
Early Life ◽  
Generalized Additive Models ◽  
Larval Growth ◽  
Early Life History ◽  
Additive Models ◽  
Control Mechanisms ◽  
Ecological Stability ◽  
Western Atlantic ◽  
History Of

The invasion of the western Atlantic by the Indo-Pacific lionfish (Pterois volitans/miles) is a serious threat to the ecological stability of the region. The early life history of the lionfish remains poorly understood despite the important role that larval supply plays reef fish population dynamics. In this study, we characterized patterns in the horizontal and vertical distributions of larval lionfish collected in the western Caribbean, US Caribbean, and the Gulf of Mexico from 19 ichthyoplankton surveys conducted from 2009–2016. Using generalized additive models (GAMs), we assessed the relative effects of spatiotemporal and environmental variation on the distribution of lionfish larvae. We also examined otoliths to determine larval ages and report the first larval growth rate estimates for this species. Lionfish larvae were present at 7.8% of all stations sampled and our model suggests that lionfish presence is related to sea surface temperature and the lunar cycle. Year and location also strongly affected the larval distribution, likely reflecting the ongoing expansion of the species during our sampling timeframe. Much of the variation in larval lionfish presence remained unexplained, and future studies should incorporate additional environmental factors to improve model predictions. This study improves our understanding of the lionfish life cycle and accentuates the need for further research into the early life history of this invasive species. The design and implementation of effective long-term lionfish control mechanisms will require an understanding of their entire life history.

Age-stage, two-sex life history of the golden twin spot moth, Chrysodeixis chalcites (Lepidoptera: Noctuidae), on six commercial tomato cultivars under laboratory conditions

2015 ◽  
Vol 148 (1) ◽  
pp. 92-101
Author(s):  
Gadir Nouri-Ganbalani ◽  
Mozhgan Mardani-Talaee ◽  
Mohamad Reza Haji-Ramezani
Keyword(s):  
Life History ◽  
Larval Growth ◽  
Ornamental Plants ◽  
Growth Index ◽  
Rio Grande ◽  
Laboratory Conditions ◽  
History Of ◽  
Chrysodeixis Chalcites ◽  
Tomato Cultivars ◽  
Lepidoptera Noctuidae

AbstractThe tomato looper, Chrysodeixis chalcites (Esper) (Lepidoptera: Noctuidae), is a major pest that feeds on some fodder crops, vegetables, and ornamental plants in diverse plant families. We studied the effect of different cultivars of tomato including: Cal.JN3, Hed Rio Grande, Rio Grande UG, SUN 6108 f1, Super crystal, and Super strain B on the life history of C. chalcites under laboratory conditions (25±1 °C, 65±5% relative humidity, and 16:8 (light:dark hours). Data were analysed using the age-stage, two-sex life table method. Tomato cultivars had significant effects on developmental time of larvae, pupae, and total preadult stages of C. chalcites. The longest (17.39 days) and the shortest (13.93 days) larval period were observed on Hed Rio Grande and SUN 6108 f1, respectively. The longest pupal period was observed on Cal.JN3 (12.16 days) and Hed Rio Grande (12.11 days) compared with other cultivars. The lowest amount of larval growth index and rate of ovipositon days was observed on Cal.JN3. The results of this study revealed that Cal.JN3 and Hed Rio Grande were the less suitable cultivars to C. chalcites compared with other cultivars studied and can be used in integrated pest management programme of this pest.

Experimental life history of Echinostoma cinetorchis

1990 ◽  
Vol 28 (1) ◽  
pp. 39 ◽  
Author(s):  
S H Lee ◽  
J Y Chai ◽  
S T Hong ◽  
W M Sohn
Keyword(s):  
Life History ◽  
History Of

Queering Gender Identity Work: A Life History of a Black Transgender Woman

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Esethu Monakali
Keyword(s):  
Life History ◽  
Gender Identity ◽  
Public Spaces ◽  
Identity Work ◽  
Social Identities ◽  
Gender And Sexuality ◽  
Ongoing Effort ◽  
History Of ◽  
The Individual

This article offers an analysis of the identity work of a black transgender woman through life history research. Identity work pertains to the ongoing effort of authoring oneself and positions the individual as the agent; not a passive recipient of identity scripts. The findings draw from three life history interviews. Using thematic analysis, the following themes emerge: institutionalisation of gender norms; gender and sexuality unintelligibility; transitioning and passing; and lastly, gender expression and public spaces. The discussion follows from a poststructuralist conception of identity, which frames identity as fluid and as being continually established. The study contends that identity work is a complex and fragmented process, which is shaped by other social identities. To that end, the study also acknowledges the role of collective agency in shaping gender identity.

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