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Kaushik G, Bordoloi S. Morphology and reproductive biology of two hill stream Cyprinids, Balitora brucei and Psilorhynchus balitora, from the Ranganadi River (India), with a special note to their conservational threats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:23144-23157. [PMID: 34802080 DOI: 10.1007/s11356-021-17411-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
The current work represents the study on morphology and reproductive biology of two indigenous torrential fishes, Balitora brucei and Psilorhynchus balitora, for the first time. The Gray's stone loach Balitora brucei and balitora minnow Psilorhynchus balitora abound in the torrential water bodies of South East Asia. The current paper redescribes morphology based on the fresh collection. Specific parameters of reproductive biology on both the fishes have been studied for the first time. Both the species were adapted to the same ecological conditions of the river Ranganadi. Fish specimens were collected at a fortnightly interval from the river in the Lakhimpur district of Assam, India. The detailed study includes morphological data analyzed with Mann-Whitney U-test and specific reproductive parameters such as condition factor (K), gonado-somatic index (GSI), modified gonado-somatic index (MGSI), and Dobriyal index (DI). Progressive development of the gonads was confirmed with dissection and histological study. Both the species are multiple breeders with prolonged reproductive seasons ranging from 4 to 5 months. Both the fishes are found to be migrants from upstream, and a good number of individuals were recorded during the monsoon season, reflecting the sampling site as a breeding ground. During winter, the local people use various chemicals, piscicidal plants, and electric instruments for fishing resulting in a steep decline in the number of individuals for both the species. Moreover, the effect of the North Eastern Electric Power Corporation Limited (NEEPCO) dam is evident on the decline of the ichthyofaunal diversity of the river. The results of present study will provide the baseline information on these two species of fishes for planning conservation measures in future.
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Affiliation(s)
| | - Sabitry Bordoloi
- Institute of Advanced Study in Science and Technology, Paschim Boragaon, Guwahati, 781035, India
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Mousavi SE, Purser GJ, Patil JG. Embryonic Onset of Sexually Dimorphic Heart Rates in the Viviparous Fish, Gambusia holbrooki. Biomedicines 2021; 9:165. [PMID: 33567532 PMCID: PMC7915484 DOI: 10.3390/biomedicines9020165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 12/12/2022] Open
Abstract
In fish, little is known about sex-specific differences in physiology and performance of the heart and whether these differences manifest during development. Here for the first time, the sex-specific heart rates during embryogenesis of Gambusia holbrooki, from the onset of the heart rates (HRs) to just prior to parturition, was investigated using light cardiogram. The genetic sex of the embryos was post-verified using a sex-specific genetic marker. Results reveal that heart rates and resting time significantly increase (p < 0.05) with progressive embryonic development. Furthermore, both ventricular and atrial frequencies of female embryos were significantly higher (p < 0.05) than those of their male sibs at the corresponding developmental stages and remained so at all later developmental stages (p < 0.05). In concurrence, the heart rate and ventricular size of the adult females were also significantly (p < 0.05) higher and larger respectively than those of males. Collectively, the results suggest that the cardiac sex-dimorphism manifests as early as late-organogenesis and persists through adulthood in this species. These findings suggest that the cardiac measurements can be employed to non-invasively sex the developing embryos, well in advance of when their phenotypic sex is discernible. In addition, G. holbrooki could serve as a better model to study comparative vertebrate cardiovascular development as well as to investigate anthropogenic and climatic impacts on heart physiology of this species, that may be sex influenced.
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Affiliation(s)
- Seyed Ehsan Mousavi
- Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Taroona, TAS 7053, Australia;
| | - G. John Purser
- Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Taroona, TAS 7053, Australia;
| | - Jawahar G. Patil
- Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Taroona, TAS 7053, Australia;
- Inland Fisheries Service, New Norfolk, TAS 7140, Australia
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3
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Mohr RA, Whitchurch EA, Anderson RD, Forlano PM, Fay RR, Ketten DR, Cox TC, Sisneros JA. Intra- and Intersexual swim bladder dimorphisms in the plainfin midshipman fish (Porichthys notatus): Implications of swim bladder proximity to the inner ear for sound pressure detection. J Morphol 2017; 278:1458-1468. [PMID: 28691340 DOI: 10.1002/jmor.20724] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/17/2017] [Accepted: 06/20/2017] [Indexed: 11/11/2022]
Abstract
The plainfin midshipman fish, Porichthys notatus, is a nocturnal marine teleost that uses social acoustic signals for communication during the breeding season. Nesting type I males produce multiharmonic advertisement calls by contracting their swim bladder sonic muscles to attract females for courtship and spawning while subsequently attracting cuckholding type II males. Here, we report intra- and intersexual dimorphisms of the swim bladder in a vocal teleost fish and detail the swim bladder dimorphisms in the three sexual phenotypes (females, type I and II males) of plainfin midshipman fish. Micro-computerized tomography revealed that females and type II males have prominent, horn-like rostral swim bladder extensions that project toward the inner ear end organs (saccule, lagena, and utricle). The rostral swim bladder extensions were longer, and the distance between these swim bladder extensions and each inner-ear end organ type was significantly shorter in both females and type II males compared to that in type I males. Our results revealed that the normalized swim bladder length of females and type II males was longer than that in type I males while there was no difference in normalized swim bladder width among the three sexual phenotypes. We predict that these intrasexual and intersexual differences in swim bladder morphology among midshipman sexual phenotypes will afford greater sound pressure sensitivity and higher frequency detection in females and type II males and facilitate the detection and localization of conspecifics in shallow water environments, like those in which midshipman breed and nest.
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Affiliation(s)
- Robert A Mohr
- Department of Psychology, University of Washington, Seattle, Washington, 98195-1525
| | | | - Ryan D Anderson
- Center for Developmental Biology & Regenerative Medicine, Seattle Children's Research Institute, Seattle, Washington, 98101
| | - Paul M Forlano
- Department of Biology, Brooklyn College, and The Graduate Center, City University of New York, Brooklyn, New York, 11210
| | - Richard R Fay
- Marine Biological Laboratory, Woods Hole, Massachusetts, 02543
| | - Darlene R Ketten
- Boston University, Biomedical Engineering (Hearing Research Center) and Harvard Medical School, Otology and Laryngology, Boston, Massachusetts, 02115.,Biology Department, Wood Hole Oceanographic Institution, Woods Hole, Massachusetts, 02543
| | - Timothy C Cox
- Center for Developmental Biology & Regenerative Medicine, Seattle Children's Research Institute, Seattle, Washington, 98101.,Department of Pediatrics (Craniofacial Medicine), University of Washington, Seattle, Washington, 98195.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, 3800, Australia
| | - Joseph A Sisneros
- Department of Psychology, University of Washington, Seattle, Washington, 98195-1525.,Department of Biology, University of Washington, Seattle, Washington, 98195.,Virginia Merrill Bloedel Hearing Research Center, Seattle, Washington, 98195
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Britz R, Conway KW. Danionella dracula, an escape from the cypriniform Bauplan via developmental truncation? J Morphol 2015; 277:147-66. [PMID: 26589666 DOI: 10.1002/jmor.20486] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 09/30/2015] [Accepted: 10/08/2015] [Indexed: 11/09/2022]
Abstract
We provide a detailed account of the osteology of the miniature Asian freshwater cyprinid fish Danionella dracula. The skeleton of D. dracula shows a high degree of developmental truncation when compared to most other cyprinids, including its close relative the zebrafish Danio rerio. Sixty-one bones, parts thereof or cartilages present in most other cyprinids are missing in D. dracula. This impressive organism-wide case of progenesis renders it one of the most developmentally truncated bony fishes or even vertebrates. Danionella dracula lacks six of the eight unique synapomorphies that define the order Cypriniformes and has, thus, departed from the cypriniform Bauplan more dramatically than any other member of this group. This escape from one of the most successful Baupläne among bony fishes may have been facilitated by the organism-wide progenesis encountered in D. dracula. By returning in its skeletal structure to the early developmental condition of other cypriniforms, D. dracula may have managed to overcome the evolutionary constraints associated with this Bauplan and opened up new evolutionary avenues that enabled it to evolve a number of striking morphological novelties, including its tooth-like odontoid processes and a complex drumming apparatus.
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Affiliation(s)
- Ralf Britz
- Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 SBD, UK
| | - Kevin W Conway
- Department of Wildlife and Fisheries Sciences and Biodiversity Research and Teaching Collections, Texas A&M University, College Station, Texas, 77843, USA
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Kéver L, Colleye O, Lugli M, Lecchini D, Lerouvreur F, Herrel A, Parmentier E. Sound production in Onuxodon fowleri (Carapidae) and its amplification by the host shell. J Exp Biol 2014; 217:4283-94. [DOI: 10.1242/jeb.109363] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Onuxodon species are well known for living inside pearl oysters. As in other carapids, their anatomy highlights their ability to make sounds but sound production has never been documented in Onuxodon. This paper describes sound production in Onuxodon fowleri as well as the anatomy of the sound production apparatus. Single-pulsed sounds and multiple-pulsed sounds that sometimes last more than 3 s were recorded in the field and in captivity (Makemo Island, French Polynesia). These pulses are characterized by a broadband frequency spectrum from 100 to 1000 Hz. Onuxodon fowleri is mainly characterized by its ability to modulate the pulse period, meaning that this species can produce pulsed sounds and tonal-like sounds using the same mechanism. In addition, the sound can be remarkably amplified by the shell cavity (peak gain can exceed 10 dB for some frequencies). The sonic apparatus of O. fowleri is characterized by a rocker bone in front of the swimbladder, modified vertebrae and epineurals, and two pairs of sonic muscles, one of which (primary sonic muscle) inserts on the rocker bone. The latter structure, which is absent in other carapid genera, appears to be sexually dimorphic suggesting differences in sound production in males and females. Sound production in O. fowleri could be an example of adaptation where an animal exploits features of its environment to enhance communication.
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Affiliation(s)
- Loïc Kéver
- Laboratoire de Morphologie Fonctionnelle et Evolutive Liège, Institut de Chimie, B6c, 4000 Liège, Belgium
| | - Orphal Colleye
- Laboratoire de Morphologie Fonctionnelle et Evolutive Liège, Institut de Chimie, B6c, 4000 Liège, Belgium
| | - Marco Lugli
- Dipartimento di Neuroscienze, Universitá di Parma, 43100 Parma, Italy
| | - David Lecchini
- USR 3278 CNRS-EPHE-UPVD, CRIOBE, BP1013 Papetoai, 98729 Moorea, French Polynesia
- Laboratoire d'Excellence ‘CORAIL’, BP1013 Papetoai, 98729 Moorea, French Polynesia
| | - Franck Lerouvreur
- USR 3278 CNRS-EPHE-UPVD, CRIOBE, BP1013 Papetoai, 98729 Moorea, French Polynesia
| | - Anthony Herrel
- UMR 7179 CNRS/MNHN, Département d'Ecologie et de Gestion de la Biodiversité, 57 rue Cuvier, Case Postale 55, 75231, Paris Cedex 5, France
- Ghent University, Evolutionary Morphology of Vertebrates, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Eric Parmentier
- Laboratoire de Morphologie Fonctionnelle et Evolutive Liège, Institut de Chimie, B6c, 4000 Liège, Belgium
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Conway KW, Britz R, Shrestha J, Manimekalan A, Rüber L. Molecular systematics of the Asian torrent minnows (Ostariophysi: Psilorhynchidae) inferred from nuclear and mitochondrial DNA sequence data. J ZOOL SYST EVOL RES 2014. [DOI: 10.1111/jzs.12090] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin W. Conway
- Department of Wildlife and Fisheries Sciences and Biodiversity Research and Teaching Collections; Texas A&M University; College Station TX USA
| | - Ralf Britz
- Department of Zoology; The Natural History Museum; London UK
| | - Jiwan Shrestha
- Nepal Academy for Science and Technology (NAST); Khumaltar; Lalitpur Kathmandu Nepal
| | | | - Lukas Rüber
- Naturhistorisches Museum der Burgergemeinde Bern; Bern Switzerland
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