Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years
Normally, butterfly behavior and population size are studied intensively for brief periods or occasionally for long periods, not in detail for long periods, producing an incomplete view in bolh cases. How time limitation affects studies has been unknown for a long time. This paper analyses this prob...
| Autores principales: | , |
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| Formato: | Online |
| Idioma: | eng |
| Publicado: |
Universidad de Costa Rica
2000
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/18829 |
| id |
RBT18829 |
|---|---|
| record_format |
ojs |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Swanson, Henry F Monge-Nájera, Julián |
| spellingShingle |
Swanson, Henry F Monge-Nájera, Julián Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years |
| author_facet |
Swanson, Henry F Monge-Nájera, Julián |
| author_sort |
Swanson, Henry F |
| description |
Normally, butterfly behavior and population size are studied intensively for brief periods or occasionally for long periods, not in detail for long periods, producing an incomplete view in bolh cases. How time limitation affects studies has been unknown for a long time. This paper analyses this problem based on an intensive long term study of Vanessa atalanta (L.) that covered nearly 8000 days, most of them consecutive, for 22 years (Apri1 15, 1977- Apri1 14, 1999), in a subtropical habitat near Orlando, Florida. There is no evidence Ihat ethological studies are affected by their normally brief duration (one year or less), but the analysis of yearly values hid the associations of number of individuals and arrival time with climate. In small areas, isolated population counts lasting less Ihan two weeks are not reliable, according to this study. We found no difference in number of visitors for El Niño years. The daily number of visitors was inversely correlated with temperature and precipitation, but arrival time of the first visitor was positively correlated wilh bolh. The number of visitors reaches a peak near Ihe end of Winter. The activity period span is greater Ihan in more seasonal climates. Individuals were active even at 10° C and with 9 mis winds. Individuals with fresh wing condition were most cornmon from January to June. There were 82 atypical cases of individuals arriving before 12:00 hr. Aerial interactions were seen whenever there was more Ihan one individual in Ihe site (i.e. 41 % of days, N=7634 total days). Only once in Ihese 22 years was predation seen. |
| title |
Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years |
| title_short |
Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years |
| title_full |
Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years |
| title_fullStr |
Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years |
| title_full_unstemmed |
Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years |
| title_sort |
tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of vanessa atalanta (lepidoptera: nymphalidae) for 22 years |
| title_alt |
The effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years |
| publisher |
Universidad de Costa Rica |
| publishDate |
2000 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/18829 |
| work_keys_str_mv |
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| _version_ |
1810114763683790848 |
| spelling |
RBT188292022-06-13T17:49:51Z The effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years Tbe effects of methodological limitations in the study of butterfly bebavior and demography: a daily study of Vanessa atalanta (Lepidoptera: Nymphalidae) for 22 years Swanson, Henry F Monge-Nájera, Julián long term study population size daily visitation pattem Lepidoptera wealher El Niño phenology behavior methodology Normally, butterfly behavior and population size are studied intensively for brief periods or occasionally for long periods, not in detail for long periods, producing an incomplete view in bolh cases. How time limitation affects studies has been unknown for a long time. This paper analyses this problem based on an intensive long term study of Vanessa atalanta (L.) that covered nearly 8000 days, most of them consecutive, for 22 years (Apri1 15, 1977- Apri1 14, 1999), in a subtropical habitat near Orlando, Florida. There is no evidence Ihat ethological studies are affected by their normally brief duration (one year or less), but the analysis of yearly values hid the associations of number of individuals and arrival time with climate. In small areas, isolated population counts lasting less Ihan two weeks are not reliable, according to this study. We found no difference in number of visitors for El Niño years. The daily number of visitors was inversely correlated with temperature and precipitation, but arrival time of the first visitor was positively correlated wilh bolh. The number of visitors reaches a peak near Ihe end of Winter. The activity period span is greater Ihan in more seasonal climates. Individuals were active even at 10° C and with 9 mis winds. Individuals with fresh wing condition were most cornmon from January to June. There were 82 atypical cases of individuals arriving before 12:00 hr. Aerial interactions were seen whenever there was more Ihan one individual in Ihe site (i.e. 41 % of days, N=7634 total days). Only once in Ihese 22 years was predation seen. Normally, butterfly behavior and population size are studied intensively for brief periods or occasionally for long periods, not in detail for long periods, producing an incomplete view in bolh cases. How time limitation affects studies has been unknown for a long time. This paper analyses this problem based on an intensive long term study of Vanessa atalanta (L.) that covered nearly 8000 days, most of them consecutive, for 22 years (Apri1 15, 1977- Apri1 14, 1999), in a subtropical habitat near Orlando, Florida. There is no evidence Ihat ethological studies are affected by their normally brief duration (one year or less), but the analysis of yearly values hid the associations of number of individuals and arrival time with climate. In small areas, isolated population counts lasting less Ihan two weeks are not reliable, according to this study. We found no difference in number of visitors for El Niño years. The daily number of visitors was inversely correlated with temperature and precipitation, but arrival time of the first visitor was positively correlated wilh bolh. The number of visitors reaches a peak near Ihe end of Winter. The activity period span is greater Ihan in more seasonal climates. Individuals were active even at 10° C and with 9 mis winds. Individuals with fresh wing condition were most cornmon from January to June. There were 82 atypical cases of individuals arriving before 12:00 hr. Aerial interactions were seen whenever there was more Ihan one individual in Ihe site (i.e. 41 % of days, N=7634 total days). Only once in Ihese 22 years was predation seen. Universidad de Costa Rica 2000-07-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/18829 10.15517/rbt.v48i2-3.18829 Revista de Biología Tropical; Vol. 48 No. 2-3 (2000): Volume 48 – Regular number 2-3 – June 2000; 605–614 Revista de Biología Tropical; Vol. 48 Núm. 2-3 (2000): Volumen 48 – Numero regular 2-3 – Junio 2000; 605–614 Revista Biología Tropical; Vol. 48 N.º 2-3 (2000): Volume 48 – Regular number 2-3 – June 2000; 605–614 2215-2075 0034-7744 10.15517/rbt.v48i2-3 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/18829/18955 Copyright (c) 2000 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |