Strategies of homing behavior in the red squirrel, Tamiasciurus hudsonicus

Bovet, Jacques

doi:10.1007/bf00293107

Cited by 31 publications

(29 citation statements)

References 21 publications

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“…It is generally assumed that estimating and covering the approximately correct homing distance without the assistance of external cues depends on PI mechanisms that allow the animal to plan, and also to execute, the correct length of the return path. Walking over the approximately right distance may, however, also depend on other factors, such as the animal's knowledge of the maximal dimension of the space it lives in (Bovet, 1992;Séguinot et al, 1993;Maurer, 1998).…”

Section: Discussionmentioning

confidence: 99%

Resetting the path integrator: a basic condition for route-based navigation

Etienne

Maurer

Boulens

et al. 2004

Journal of Experimental Biology

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During short excursions away from home, some mammals are known to update their position with respect to their point of departure through path integration (dead reckoning) by processing internal (idiothetic) signals generated by rotations and translations. Path integration (PI) is a continuously ongoing process in which errors accumulate. To remain functional over longer excursions, PI needs to be reset through position information from stable external references. We tested the homing behaviour of golden hamsters (Mesocricetus auratus W.) during hoarding excursions following a rotation of the arena and nest. In continuous darkness, the hamsters returned to their point of departure at the rotated nest, and therefore depended on PI only. In other trials, the animals were briefly presented with visual room cues during or at the end of the outward trip, visual cues being pitted by 67°or 98°against the animal's current selfgenerated position vector. After a fix, the animals headed for the usual (unrotated) nest location, as defined by room cues, independent of the timing of the fix. These results were obtained in two different geometrical settings and showed that, after the fix, the animals update their position, and not merely their head direction or internal compass, in a new reference frame. Thus, episodic fixes on familiar external references reset the PI and therefore greatly enhance the functional signification of navigation that is based on feedback information from locomotion.

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Section: Discussionmentioning

confidence: 99%

Resetting the path integrator: a basic condition for route-based navigation

Etienne

Maurer

Boulens

et al. 2004

Journal of Experimental Biology

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“…There are several explanations why rockfishes would display bimodal orientation. Bimodal directions may be used in small exploratory migrations (Baker 1978;Bovet 1984). For example, perhaps rockfishes make exploratory migrations by moving northwest from Orchard Rocks to assess other sites and then move 180" (southeast) to relocate their home site if no better site is located.…”

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confidence: 99%

“…For example, perhaps rockfishes make exploratory migrations by moving northwest from Orchard Rocks to assess other sites and then move 180" (southeast) to relocate their home site if no better site is located. Bovet (1984) speculated that if displaced, homing animals will first move in a similar direction and distance that relates to their exploratory movements. Failure to home after moving a "critical distance" would indicate that they made an orientation mistake.…”

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confidence: 99%

A telemetric study of the home ranges and homing routes of copper and quillback rockfishes on shallow rocky reefs

Matthews¹

1990

Can. J. Zool.

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MATTHEWS, K. R. 1990. A telemetric study of the home ranges and homing routes of copper and quillback rockfishes on shallow rocky reefs. Can. J. Zool. 68: 2243-2250. Ultrasonic telemetry was used to investigate the home ranges and homing routes of 11 copper, Sebastes caurinus, and quillback, Sebastes maliger, rockfishes. Home ranges of four copper and quillback rockfishes were monitored to determine if movement occurred during the day, night, or strong current (7.4 krnlh). As expected from previous conventional tagging work, home ranges were small (most < 10 m2) on high relief reefs and considerably larger (within 4000 m2) on low relief reefs. No off-reef movement by copper and quillback rockfishes was detected on either reef type. To determine homing routes, the daily positions of seven copper and quillback rockfishes were monitored as they proceeded back to their home sites after experimental 500-m displacements from a high relief rocky reef to a low relief rocky reef. Six of the seven displaced copper and quillback rockfishes took from 8 to 25 days to return home; one quillback rockfish was followed for 16 days and lost, it was last located approximately halfway back to the original home site. Once displaced rockfish returned to their original capture site, no subsequent movement was detected, suggesting home site recognition. Homing seemed to consist of three phases: (i) initial movements along a bimodal northwest-southeast axis that are possibly associated with directional preferences in exploratory migrations, (ii) movement (westerly) towards the home reef, and (iii) the final location of the home site. Homing and exploratory migrations may be characteristic behaviors in the speciose rockfish group; the evolutionary advantage ensures rockfishes locate and utilize high quality habitats.MATTHEWS, K. R. 1990. A telemetric study of the home ranges and homing routes of copper and quillback rockfishes on shallow rocky reefs. Can. J. Zool. 68 : 2243-2250.Le domaine vital et les voies de retour au gite ont Ct C CtudiCs par tClCmCtrie aux ultrasons chez 11 SCbastes cuivrks, Sebastes caurinus, et SCbastes 2I dos Cpineux, Sebastes maliger. La mesure des domaines de quatre Sebastes cuivrks et SCbastes 2I dos Cpineux a permis de dkterminer si les poissons se deplacent durant le jour, durant la nuit et par fort courant (7,4 krnlh). Les rksultats ont confirm6 les donnees de travaux antkrieurs par marquage conventionnel, 2I savoir que les domaines sont petits (la plupart de moins de 10 m2) sur les rCcifs 2I relief important, et beaucoup plus grands (moins de 4000 m2) sur les rCcifs moins en relief. Aucun deplacement loin des rCcifs n'a Ct C enregistrk chez l'un ou I'autre poisson, ni sur I'un ni sur I'autre types de relief. Pour dkterminer les voies de retour au domaine, les positions quotidiennes de sept poissons ont Ct C determinees lors du retour 2I leur domaine aprks des deplacements experimentaux de 500 m d'un recif rocheux trks accident6 2I un recif rocheux peu accidentk. Six des sept poissons dCplacCs ont mis 8-2...

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“…Although we found no relationship between trial and movement route, increased travel speed during repeated trials suggests that learning, or familiarity with long-distance travel, can affect how individuals move through a heterogeneous landscape. For sciurids, homing success decreases with increased translocation distance (Bovet 1984;Sawyer and Rose 1985;Smith et al 2011;Van Vuren et al 1997). Not surprisingly, likelihood of Franklin's ground squirrels homing within 24 h of translocation decreased with increasing crossing distance.…”

Section: Discussionmentioning

confidence: 85%