Influence of water motion and reproductive attributes on movement and shelter use in the marine snail Littorina saxatilis
Bibliographic record
Abstract
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 315:177-186 (2006) - doi:10.3354/meps315177 Influence of water motion and reproductive attributes on movement and shelter use in the marine snail Littorina saxatilis L. Miguel Pardo1,2,*, Ladd E. Johnson1 1Département de biologie & Québec-Océan, Université Laval, Québec, Québec G1K 7P4, Canada 2Universidad Austral de Chile, Instituto de Biología Marina Dr. Jürgen Winter, Laboratorio Costero Calfuco, Valdivia, Chile *Email: luispardo@uach.cl ABSTRACT: Extrinsic factors such as the physical environment can control the activities of animals, but their effect on behaviour can vary substantially among individuals within a given population depending on more intrinsic factors such as differences in the need to search for food or mates. We examined the activity of the brooding intertidal gastropod Littorina saxatilis under a range of different physical stressors experienced during high tide to test 2 hypotheses: (1) activity is affected by hydrodynamic conditions and (2) different reproductive groups respond in different ways to these conditions, specifically that gravid females exhibit more risk-avoidance behaviour in relation to other individuals. Two components of activity (magnitude of movement and shelter use) were measured for 3 reproductive groups (males, non-gravid females and gravid females) under temporally varying conditions of different environmental factors, including water flow, maximum wave force and water temperature. Movement (specifically, net distance displaced) of snails decreased with increases in water flow and maximum wave force. Reproductive groups did not differ in the form of their response function to water flow, but instead differed in the magnitude of their response, with gravid females moving the shortest distances. Gravid females were also the only group to increase their use of shelters in response to increases in maximum wave force, and this response was positively related to their fecundity. We interpret these behaviours as responses to increased risk of dislodgment and conclude that the behaviour of gravid females (i.e. use of shelters and reduced movements) should increase their survival as well as that of the offspring they carry. KEY WORDS: Brooding · Foraging · Gastropod · Intertidal ecology · Movement · Risk avoidance · Shelter use Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 315. Online publication date: June 13, 2006 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2006 Inter-Research.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".