Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.11
Hernando Borges Neves Filho, Yulla Christoffersen Knaus, Alex H. Taylor
Interconnection of behaviors is a process that describes how independently acquired behavioral repertoires can be combined together as a new sequence of behaviors. Manipulations of training, training context and experience of failure in the test situation can hinder this interconnection of previously acquired behaviors. We tested whether wild New Caledonian crows (Corvus moneduloides) could perform a sequence of six independently acquired behaviors in order to fetch a stone from inside a box in a nearby room and use it to gain food from a stone dropping apparatus. However, crows were only trained on three or four of the six behaviors required, and these prerequisites were trained in different contexts. One of the crows that learned four prerequisites solved the task. Neither of the crows that learned three prerequisites solved the task. The crows that learned four prerequisites, but did not solve the problem, were later trained in an additional behavior and then were able to solve the task. These results shows that New Caledonian crows are able to produce novel behavioral solutions to new problems by interconnecting behaviors learned in different contexts, with different consequences and despite experience of failure after the first exposure to the task.
{"title":"New Caledonian Crows Can Interconnect Behaviors Learned in Different Contexts, with Different Consequences, and After Exposure to Failure","authors":"Hernando Borges Neves Filho, Yulla Christoffersen Knaus, Alex H. Taylor","doi":"10.46867/ijcp.2019.32.00.11","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.11","url":null,"abstract":"Interconnection of behaviors is a process that describes how independently acquired behavioral repertoires can be combined together as a new sequence of behaviors. Manipulations of training, training context and experience of failure in the test situation can hinder this interconnection of previously acquired behaviors. We tested whether wild New Caledonian crows (Corvus moneduloides) could perform a sequence of six independently acquired behaviors in order to fetch a stone from inside a box in a nearby room and use it to gain food from a stone dropping apparatus. However, crows were only trained on three or four of the six behaviors required, and these prerequisites were trained in different contexts. One of the crows that learned four prerequisites solved the task. Neither of the crows that learned three prerequisites solved the task. The crows that learned four prerequisites, but did not solve the problem, were later trained in an additional behavior and then were able to solve the task. These results shows that New Caledonian crows are able to produce novel behavioral solutions to new problems by interconnecting behaviors learned in different contexts, with different consequences and despite experience of failure after the first exposure to the task.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.12
Erika A. Brown, C. Abramson
The field of psychology has witnessed an increase in its reliance on empiricism to the point that many researchers operate with a complete disregard for the role of philosophy in their pursuit of knowledge. The resultant segmentation of the field and decline in such important areas as comparative psychology can be attributed to this trend, indicating the need for the role of both philosophical and scientific knowledge to be rightly applied and understood. A return to a proper utilization of philosophy in guiding empirical questions and interpreting results is offered as a means of revitalizing the field of comparative psychology. The philosophical approach of Aristotle and Thomas Aquinas is discussed as a means to do so, as it provides a valuable perspective in guiding research and enabling the scientist to interpret results in an integrated and informative manner, whereby the phenotypic comparisons of humans and non-humans can be understood coherently.
{"title":"Aristotelean-Thomistic Approach of Comparative Psychology","authors":"Erika A. Brown, C. Abramson","doi":"10.46867/ijcp.2019.32.00.12","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.12","url":null,"abstract":"The field of psychology has witnessed an increase in its reliance on empiricism to the point that many researchers operate with a complete disregard for the role of philosophy in their pursuit of knowledge. The resultant segmentation of the field and decline in such important areas as comparative psychology can be attributed to this trend, indicating the need for the role of both philosophical and scientific knowledge to be rightly applied and understood. A return to a proper utilization of philosophy in guiding empirical questions and interpreting results is offered as a means of revitalizing the field of comparative psychology. The philosophical approach of Aristotle and Thomas Aquinas is discussed as a means to do so, as it provides a valuable perspective in guiding research and enabling the scientist to interpret results in an integrated and informative manner, whereby the phenotypic comparisons of humans and non-humans can be understood coherently.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.05
P. Hackett, R. C. Shaw, N. Boogert, N. Clayton
In this report we analyse the cognitive performance of New Zealand Robins (Petroica longipes) using facet theory, smallest space analysis (SSA) and partial order scalogram analysis (POSA). The data set we analyse was originally subjected to principle component analysis in order to develop a test-battery for avian cognitive performance. We extend these analyses by proposing a two facet rather than a single component solution using SSA and we characterize individual birds by their scores on all tasks using POSA. We note problems with the small sample size and call for our exploratory analyses to be replicated using a larger sample of birds and for the development of further test items using the facet theory’s tool the mapping sentence. We suggest that facet theory and the mapping sentences are research approaches suitable for conceiving, designing, analysing and developing theory that may be used within avian cognitive research. We conclude by proposing a mapping sentence for avian cognition, which forms an adaptable template for future avian cognition research.
{"title":"A Facet Theory Analysis of the Structure of Cognitive Performance in New Zealand Robins (Petroica longipes)","authors":"P. Hackett, R. C. Shaw, N. Boogert, N. Clayton","doi":"10.46867/ijcp.2019.32.00.05","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.05","url":null,"abstract":"In this report we analyse the cognitive performance of New Zealand Robins (Petroica longipes) using facet theory, smallest space analysis (SSA) and partial order scalogram analysis (POSA). The data set we analyse was originally subjected to principle component analysis in order to develop a test-battery for avian cognitive performance. We extend these analyses by proposing a two facet rather than a single component solution using SSA and we characterize individual birds by their scores on all tasks using POSA. We note problems with the small sample size and call for our exploratory analyses to be replicated using a larger sample of birds and for the development of further test items using the facet theory’s tool the mapping sentence. We suggest that facet theory and the mapping sentences are research approaches suitable for conceiving, designing, analysing and developing theory that may be used within avian cognitive research. We conclude by proposing a mapping sentence for avian cognition, which forms an adaptable template for future avian cognition research.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.09
Alejandro Segura, A. Clavijo, A. Bouzas
We designed a free-operant choice procedure that represents a technical improvement to assess the control of mutual reinforcement contingencies over the choice of coordinated behavior. We demonstrate the advantages of the new procedure with eight rats that were trained to continuously move a steel ball from end to end of a gutter. Subjects were assigned to pairs and had to choose between two response options: one in which reinforcement was contingent upon an individual response, and another in which reinforcement depended on the coordination of intra-pair behavior. We evaluated (a) the effect of reinforcement magnitude over the distribution of responses, and (b) the role of behavioral cues on the rats’ coordinated actions via dividing the experimental chamber in two compartments with a clear/opaque partition. The coordinated actions were more likely when the larger reinforcer was initially associated with the mutual reinforcement option. The visual interaction between subjects did not impact their coordinated actions. The possibility to control organisms’ preference for social or nonsocial alternatives opens potential lines of research. For instance, identifying how the coordination of activities combines with the future value of outcomes to produce stable cooperative equilibria.
{"title":"Rats’ Choice in a Coordination Task","authors":"Alejandro Segura, A. Clavijo, A. Bouzas","doi":"10.46867/ijcp.2019.32.00.09","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.09","url":null,"abstract":"We designed a free-operant choice procedure that represents a technical improvement to assess the control of mutual reinforcement contingencies over the choice of coordinated behavior. We demonstrate the advantages of the new procedure with eight rats that were trained to continuously move a steel ball from end to end of a gutter. Subjects were assigned to pairs and had to choose between two response options: one in which reinforcement was contingent upon an individual response, and another in which reinforcement depended on the coordination of intra-pair behavior. We evaluated (a) the effect of reinforcement magnitude over the distribution of responses, and (b) the role of behavioral cues on the rats’ coordinated actions via dividing the experimental chamber in two compartments with a clear/opaque partition. The coordinated actions were more likely when the larger reinforcer was initially associated with the mutual reinforcement option. The visual interaction between subjects did not impact their coordinated actions. The possibility to control organisms’ preference for social or nonsocial alternatives opens potential lines of research. For instance, identifying how the coordination of activities combines with the future value of outcomes to produce stable cooperative equilibria.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.04
Troy D Fort, Jacob H. Negley, Tamara Mcewen
The present study sought to elucidate whether neural maturation has a mitigating effect on ethanol and its concomitant effects on memory. Three-month old zebrafish were acclimated to a plus maze using a habituation procedure. After acclimatization to the maze, associations between the red cue cards and reward were formed via a shaping procedure. Following the final shaping day, food was removed from the maze and red cues were only present in one arm. The time it took for the fish to go from the start box to the cued arm was then measured. Afterwards, fish were exposed to 0.00, 0.25, or 0.75% ethanol (v/v) for 72 hours. Post-exposure memory performance was tested at 0.5-day, 5-day, and 14-day endpoints. Three primary findings were noted. First, no significant difference in run time was found within the control group at any time point, suggesting an adept associative memory system in zebrafish. Second, no significant difference in run time was found when comparing 0.25 and 0.75% (v/v) ethanol groups. Therefore, these treatments were pooled for further analyses. Third, the most significant impairment was observed at the 0.5-day post exposure time point indicating that ethanol has a significant impact on recently learned associations. Finally, no significant difference in run time was observed within the pooled treatment group on subsequent time points. This capacity for recovery was a key difference from what was observed in previous studies.
{"title":"Drinks Like a Fish: The Effects of Ethanol on Associative Learning in Zebrafish (Danio rerio)","authors":"Troy D Fort, Jacob H. Negley, Tamara Mcewen","doi":"10.46867/ijcp.2019.32.00.04","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.04","url":null,"abstract":"The present study sought to elucidate whether neural maturation has a mitigating effect on ethanol and its concomitant effects on memory. Three-month old zebrafish were acclimated to a plus maze using a habituation procedure. After acclimatization to the maze, associations between the red cue cards and reward were formed via a shaping procedure. Following the final shaping day, food was removed from the maze and red cues were only present in one arm. The time it took for the fish to go from the start box to the cued arm was then measured. Afterwards, fish were exposed to 0.00, 0.25, or 0.75% ethanol (v/v) for 72 hours. Post-exposure memory performance was tested at 0.5-day, 5-day, and 14-day endpoints. Three primary findings were noted. First, no significant difference in run time was found within the control group at any time point, suggesting an adept associative memory system in zebrafish. Second, no significant difference in run time was found when comparing 0.25 and 0.75% (v/v) ethanol groups. Therefore, these treatments were pooled for further analyses. Third, the most significant impairment was observed at the 0.5-day post exposure time point indicating that ethanol has a significant impact on recently learned associations. Finally, no significant difference in run time was observed within the pooled treatment group on subsequent time points. This capacity for recovery was a key difference from what was observed in previous studies.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.17
S. Pellis, V. Pellis, B. Himmler, K. Modlińska, Rafał Stryjek, B. Kolb, Wojciech Pisula
Several studies on rats and hamsters, across multiple laboratories, have shown that limiting play in the juvenile period leads to adults that have physiological and anatomical changes in the medial prefrontal cortex (mPFC) and reduced socio-cognitive skills. Peers raised with playful peers have better socio-cognitive skills than animals raised with adult partners. Using Long Evans hooded rats - a commonly used domesticated strain - this relationship has been replicated multiple times. However, when the same paradigm was used with laboratory-reared wild rats, no differences were found between rats reared with peers and ones reared with adults. It has been shown that the key play-generated experiences involved are those related to actively wrestling with a partner and turn taking (as measured by role reversals), which give both partners opportunity to gain the advantage during play fighting. In the present study, we tested the hypothesis that wild rat adults provide juveniles more such experiences than do adult Long Evans rats. The asymmetry in the play interactions in adult-juveniles pairs was compared between the two strains. As predicted, wild rat adults initiated more play with the juveniles, wrestled more and provided more opportunities for role reversals. The findings thus support the hypotheses for the observed strain differences in the effects of rearing condition on the mPFC.
{"title":"Domestication and the Role of Social Play on the Development of Sociocognitive Skills in Rats","authors":"S. Pellis, V. Pellis, B. Himmler, K. Modlińska, Rafał Stryjek, B. Kolb, Wojciech Pisula","doi":"10.46867/ijcp.2019.32.00.17","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.17","url":null,"abstract":"Several studies on rats and hamsters, across multiple laboratories, have shown that limiting play in the juvenile period leads to adults that have physiological and anatomical changes in the medial prefrontal cortex (mPFC) and reduced socio-cognitive skills. Peers raised with playful peers have better socio-cognitive skills than animals raised with adult partners. Using Long Evans hooded rats - a commonly used domesticated strain - this relationship has been replicated multiple times. However, when the same paradigm was used with laboratory-reared wild rats, no differences were found between rats reared with peers and ones reared with adults. It has been shown that the key play-generated experiences involved are those related to actively wrestling with a partner and turn taking (as measured by role reversals), which give both partners opportunity to gain the advantage during play fighting. In the present study, we tested the hypothesis that wild rat adults provide juveniles more such experiences than do adult Long Evans rats. The asymmetry in the play interactions in adult-juveniles pairs was compared between the two strains. As predicted, wild rat adults initiated more play with the juveniles, wrestled more and provided more opportunities for role reversals. The findings thus support the hypotheses for the observed strain differences in the effects of rearing condition on the mPFC.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.06
Jessica Lord, W. V. D. Vliet, P. Anderson, M. Colombo, D. Scarf
The delayed matching-to-sample (DMS) task is widely employed to assess memory in a range of non-human animals. On the standard “common outcomes” (CO) DMS task, correct performance following either sample stimulus results in reinforcement. In contrast, on a “differential outcomes” (DO) DMS task, the outcome following either sample stimulus is different. One of the most consistent findings in the comparative literature is that performance under a DO condition is superior to that under a CO condition. The superior performance is attributed to the fact the DO condition enhances memory for the sample stimulus by tagging each sample with a discrete reward. Here, we investigate an alternative possibility, that pigeons use positional mediation during the delay under DO, but not CO, conditions. To test this, we tracked the head position of pigeons performing a DO (n = 4) or CO (n = 4) task. Consistent with the positional mediation account, all subjects in the DO condition displayed evidence of positional mediation. Surprisingly, positional mediation was not unique to subjects in the DO condition, with subjects in the CO condition also displaying evidence of mediation.
{"title":"Very superstitious? A preliminary investigation of pigeons’ body position during a matching-to-sample task under differential and common outcome conditions","authors":"Jessica Lord, W. V. D. Vliet, P. Anderson, M. Colombo, D. Scarf","doi":"10.46867/ijcp.2019.32.00.06","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.06","url":null,"abstract":"The delayed matching-to-sample (DMS) task is widely employed to assess memory in a range of non-human animals. On the standard “common outcomes” (CO) DMS task, correct performance following either sample stimulus results in reinforcement. In contrast, on a “differential outcomes” (DO) DMS task, the outcome following either sample stimulus is different. One of the most consistent findings in the comparative literature is that performance under a DO condition is superior to that under a CO condition. The superior performance is attributed to the fact the DO condition enhances memory for the sample stimulus by tagging each sample with a discrete reward. Here, we investigate an alternative possibility, that pigeons use positional mediation during the delay under DO, but not CO, conditions. To test this, we tracked the head position of pigeons performing a DO (n = 4) or CO (n = 4) task. Consistent with the positional mediation account, all subjects in the DO condition displayed evidence of positional mediation. Surprisingly, positional mediation was not unique to subjects in the DO condition, with subjects in the CO condition also displaying evidence of mediation.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.00.13
Juliana López-Marulanda, N. Roynette, T. Blanchard, O. Adam, F. Delfour
Exploratory behaviour includes all the actions that an animal performs to obtain information about a new object, environment or individual through using its different senses of perception. Here, we studied the development of the exploratory behaviour of a bottlenose dolphin (Tursiops truncatus) calf aged from 39 to 169 days, by investigating its acoustic productions in relation to an immerged object handled by a familiar human without isolation from its original social group. The study was conducted between July 2015 and January 2016 at Parc Asterix dolphinarium (Plailly, France). Simultaneous audio and video recordings were collected using a waterproof 360° audio-video system named BaBeL which allows localization of the dolphin that is producing sounds. During 32 recordings sessions, for a total duration of 6 hours 55 minutes of audio-video recordings, 46 click trains were attached to individual dolphins: 18 times to the calf, 11 times to its mother and 17 times to another dolphin in the pool. When comparing the calf’s acoustical production to its mother’s, no significant differences were found in their click rate, mean click duration, or mean interclick interval (ICI). However, linear regression showed that calf’s click rate increased with age and mean ICI decreased with age, probably due to an increase in its arousal. This non-intrusive methodology allows the description and analysis of acoustic signal parameters and acoustic exploratory behaviour of a dolphin calf within its social group.
{"title":"Acoustic Localization Method Applied to the Analysis of Dolphin Calf Acoustical Exploratory Behavior Within its Social Group","authors":"Juliana López-Marulanda, N. Roynette, T. Blanchard, O. Adam, F. Delfour","doi":"10.46867/ijcp.2019.32.00.13","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.00.13","url":null,"abstract":"Exploratory behaviour includes all the actions that an animal performs to obtain information about a new object, environment or individual through using its different senses of perception. Here, we studied the development of the exploratory behaviour of a bottlenose dolphin (Tursiops truncatus) calf aged from 39 to 169 days, by investigating its acoustic productions in relation to an immerged object handled by a familiar human without isolation from its original social group. The study was conducted between July 2015 and January 2016 at Parc Asterix dolphinarium (Plailly, France). Simultaneous audio and video recordings were collected using a waterproof 360° audio-video system named BaBeL which allows localization of the dolphin that is producing sounds. During 32 recordings sessions, for a total duration of 6 hours 55 minutes of audio-video recordings, 46 click trains were attached to individual dolphins: 18 times to the calf, 11 times to its mother and 17 times to another dolphin in the pool. When comparing the calf’s acoustical production to its mother’s, no significant differences were found in their click rate, mean click duration, or mean interclick interval (ICI). However, linear regression showed that calf’s click rate increased with age and mean ICI decreased with age, probably due to an increase in its arousal. This non-intrusive methodology allows the description and analysis of acoustic signal parameters and acoustic exploratory behaviour of a dolphin calf within its social group.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70621886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.46867/ijcp.2019.32.02.02
Audra E. Ames, Riley P. Macgregor, S. Wielandt, Dianne Cameron, S. Kuczaj, H. Hill
The signature whistle of the Atlantic bottlenose dolphin (Tursiops truncatus) is a well-studied acoustic signal know for broadcasting identity and maintaining contact with conspecifics. Several studies have investigated the use of this signal surrounding the birth of calves to dolphin social groups, although there appears to be discrepancies between the findings of these studies. We aimed to add to the current literature in an attempt to reconcile some of these inconsistencies through investigation of signature whistle production by a bottlenose dolphin group two months prior to and two months following the birth of a calf to one of the social group members. We found that the production of signature whistles matching the contour belonging to our dolphin mother increased significantly in both the pre- and post-partum period. Heightened production of the mother’s signature whistle type in the first week of our focal calf’s life supports the establishment of a recognition system within this time period. Given that learning processes associated with the sound environment appear to begin shortly after calf birth, we also explored the signature whistle rates of the other social group members in an effort to determine whether any signature whistle production influenced the development of the dolphin calf’s own signature whistle type. We found that the signature whistles of the other social group members were significantly lower than production of the mother’s signature whistle until after the first week post-partum. None of the signature whistle types appeared to influence the signature whistle development of our focal calf within the scope of this study, however, as the calf did not develop a signature whistle in her first two months of life.
{"title":"Pre- and Post-Partum Whistle Production of a BottlenoseDolphin (Tursiops truncatus) Social Group","authors":"Audra E. Ames, Riley P. Macgregor, S. Wielandt, Dianne Cameron, S. Kuczaj, H. Hill","doi":"10.46867/ijcp.2019.32.02.02","DOIUrl":"https://doi.org/10.46867/ijcp.2019.32.02.02","url":null,"abstract":"The signature whistle of the Atlantic bottlenose dolphin (Tursiops truncatus) is a well-studied acoustic signal know for broadcasting identity and maintaining contact with conspecifics. Several studies have investigated the use of this signal surrounding the birth of calves to dolphin social groups, although there appears to be discrepancies between the findings of these studies. We aimed to add to the current literature in an attempt to reconcile some of these inconsistencies through investigation of signature whistle production by a bottlenose dolphin group two months prior to and two months following the birth of a calf to one of the social group members. We found that the production of signature whistles matching the contour belonging to our dolphin mother increased significantly in both the pre- and post-partum period. Heightened production of the mother’s signature whistle type in the first week of our focal calf’s life supports the establishment of a recognition system within this time period. Given that learning processes associated with the sound environment appear to begin shortly after calf birth, we also explored the signature whistle rates of the other social group members in an effort to determine whether any signature whistle production influenced the development of the dolphin calf’s own signature whistle type. We found that the signature whistles of the other social group members were significantly lower than production of the mother’s signature whistle until after the first week post-partum. None of the signature whistle types appeared to influence the signature whistle development of our focal calf within the scope of this study, however, as the calf did not develop a signature whistle in her first two months of life.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70622186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.3357/amhp.4301sd.2015
Mary J. Woodruff, M. Noonan, Anjelica Martinez, R. Walker, Jesus Miranda, E. D. L. Fuente, H. Hill, C. Abramson
Author(s): Woodruff, Mary; Noonan, Michael; Martinez, Anjelica; Walker, Rachel T.; Miranda, Jesus; De La Fuente, Ezequiel; Hill, Heather M.; Abramson, Charles I. | Abstract: These appendixes summarize the graduate programs and points of contact for students interested in pursuing comparative psychology or a related fields in the field today. Both a google doc and a current list are provided. Individuals interested in having their programs or names included in the list, please contact Dr. Heather Hill at hhill1@stmarytx.edu or ijcpmail@gmail.com.
作者:伍德拉夫，玛丽;努南,迈克尔;马丁内斯,安杰丽;瑞秋·t·沃克;米兰达,耶稣;De La Fuente, Ezequiel;希尔，希瑟M.;摘要:这些附录总结了研究生课程和接触点，为有兴趣从事比较心理学或该领域相关领域的学生。提供了谷歌文档和当前列表。有兴趣将自己的项目或名字列入名单的个人，请通过hhill1@stmarytx.edu或ijcpmail@gmail.com与希瑟·希尔博士联系。
{"title":"Appendix A and B","authors":"Mary J. Woodruff, M. Noonan, Anjelica Martinez, R. Walker, Jesus Miranda, E. D. L. Fuente, H. Hill, C. Abramson","doi":"10.3357/amhp.4301sd.2015","DOIUrl":"https://doi.org/10.3357/amhp.4301sd.2015","url":null,"abstract":"Author(s): Woodruff, Mary; Noonan, Michael; Martinez, Anjelica; Walker, Rachel T.; Miranda, Jesus; De La Fuente, Ezequiel; Hill, Heather M.; Abramson, Charles I. | Abstract: These appendixes summarize the graduate programs and points of contact for students interested in pursuing comparative psychology or a related fields in the field today. Both a google doc and a current list are provided. Individuals interested in having their programs or names included in the list, please contact Dr. Heather Hill at hhill1@stmarytx.edu or ijcpmail@gmail.com.","PeriodicalId":39712,"journal":{"name":"International Journal of Comparative Psychology","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69449965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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