Latitudinal range influences the seasonal variation in the foraging behavior of marine top predators. (Registro nro. 13105)
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| 000 -LEADER | |
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| fixed length control field | 03076nab a22003137a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EC-PaCDF |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20171127092209.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 170814t20112011xxu||||| |||||||||||eng|| |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EC-PaCDF |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Edition number | 21 |
| Classification number | 599.7975 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Villegas-Amtmann, Stella. |
| 9 (RLIN) | 269 |
| 245 10 - TITLE STATEMENT | |
| Title | Latitudinal range influences the seasonal variation in the foraging behavior of marine top predators. |
| 520 0# - SUMMARY, ETC. | |
| Summary, etc. | Non-migratory resident species should be capable of modifying their foraging behavior to accommodate changes in prey abundance and availability associated with a changing environment. Populations that are better adapted to change will have higher foraging success and greater potential for survival in the face of climate change. We studied two species of resident central place foragers from temperate and equatorial regions with differing population trends and prey availability associated to season, the California sea lion (Zalophus californianus) (CSL) whose population is increasing and the endangered Galapagos sea lion (Zalophus wollebaeki) (GSL) whose population is declining. To determine their response to environmental change, we studied and compared their diving behavior using time-depth recorders and satellite location tags and their diet by measuring C and N isotope ratios during a warm and a cold season. Based on latitudinal differences in oceanographic productivity, we hypothesized that the seasonal variation in foraging behavior would differ for these two species. CSL exhibited greater seasonal variability in their foraging behavior as seen in changes to their diving behavior, foraging areas and diet between seasons. Conversely, GSL did not change their diving behavior between seasons, presenting three foraging strategies (shallow, deep and bottom divers) during both. GSL exhibited greater dive and foraging effort than CSL. We suggest that during the warm and less productive season a greater range of foraging behaviors in CSL was associated with greater competition for prey, which relaxed during the cold season when resource availability was greater. GSL foraging specialization suggests that resources are limited throughout the year due to lower primary production and lower seasonal variation in productivity compared to CSL. These latitudinal differences influence their foraging success, pup survival and population growth reflected in contrasting population trends in which CSL are more successful and potentially more resilient to climate change. |
| 546 ## - LANGUAGE NOTE | |
| Language note | English |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | California sea lion. |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | León marino de California. |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Zalophus californianus. |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Galapagos sea lion. |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | León marino de las Islas Galápagos. |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Zalophus wollebaeki. |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Simmons, Samantha E. |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kuhn, Carey E. |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Huckstadt, Luis A. |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Costa, Daniel P. |
| 9 (RLIN) | 270 |
| 773 0# - HOST ITEM ENTRY | |
| Related parts | Vol. 6, no. 8 (August 2011), p. 1-10 |
| Title | PLOS ONE. |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://dx.doi.org/10.1371/journal.pone.0023166 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Artículo |
| Withdrawn status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection code | Home library | Current library | Shelving location | Date acquired | Total Checkouts | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | Galápagos | Corley Smith Library | Corley Smith Library | Artículos | 15/08/2017 | 599.7975 VIL | 2017-2195 | 15/08/2017 | 15/08/2017 | Artículo | ||||
| Dewey Decimal Classification | Galápagos | Corley Smith Library | Corley Smith Library | Colección PDF | 15/08/2017 | 599.7975 VIL 2011 | 2021-2184 | 15/08/2017 | 15/08/2017 | Documento electrónico |