Health assessment of Black-crowned Night-herons (Nycticorax nycticorax) of the New York Harbor estuary

Scott H. Newman, Veronica M. Padula, Carolyn Cray, Laura D. Kramer

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Blood samples from 145 Black-crowned Night-heron (Nycticorax nycticorax, BCNH) chicks (mean age 3 weeks) were taken from four island colonies (Goose (2004), Canarsie Pol (2005), Hoffman (2004 and 2005) and North Brother (2004 and 2005)) in New York Harbor in 2004 and 2005 to establish baseline health reference ranges for this species and to compare health indices of birds reared on different islands. Packed cell volume (PCV) and total solids (TS) did not differ among islands in either year. Herons raised on Hoffman Island in 2004 had lower white blood cell count (WBC), and higher activities of creatine phosphokinase (CPK), lactate dehydrogenase (LDH), aspartate amino transferase (AST), higher concentrations of potassium (K) and phosphorous (PHOS) and lower liver derived proteins (TP, prealbumin, albumin, alpha 1 globulins, alpha 2 globulins, beta globulins and gamma globulins) compared to herons from Goose and North Brother Islands. These changes suggest compromised health in chicks reared on Hoffman Island in 2004. On Hoffman in 2005, these biochemical analytes did not differ from concentrations and enzyme activities measured from birds on other islands. Although no single etiology can explain these extensive changes, it is likely that exposure to contaminants at foraging sites used by birds nesting on Hoffman and/or changes in prey availability and abundance causing birds to forage in different locations between years, led to differences measured in blood-based health indices. Avian health assessments coupled with foraging ecology serve as an excellent method for evaluating ecosystem health of the New York Harbor estuary system.

Original languageEnglish
Pages (from-to)363-374
Number of pages12
JournalComparative Biochemistry and Physiology - B Biochemistry and Molecular Biology
Volume148
Issue number4
DOIs
StatePublished - Dec 1 2007

Fingerprint

Estuaries
Ports and harbors
Islands
Health
Birds
Alpha-Globulins
Blood
Geese
Globulins
Beta-Globulins
Prealbumin
gamma-Globulins
Enzyme activity
Ecology
Creatine Kinase
Transferases
L-Lactate Dehydrogenase
Aspartic Acid
Liver
Ecosystems

Keywords

  • Aspergillosis
  • Baseline health
  • Biochemistry
  • Black-crowned Night-heron
  • disease
  • Ecosystem health
  • Hematology
  • NY harbor
  • Nycticorax nycticorax
  • West Nile virus

ASJC Scopus subject areas

  • Biochemistry
  • Physiology

Cite this

Health assessment of Black-crowned Night-herons (Nycticorax nycticorax) of the New York Harbor estuary. / Newman, Scott H.; Padula, Veronica M.; Cray, Carolyn; Kramer, Laura D.

In: Comparative Biochemistry and Physiology - B Biochemistry and Molecular Biology, Vol. 148, No. 4, 01.12.2007, p. 363-374.

Research output: Contribution to journalArticle

@article{0461f8d893104a7e93c7930730fe5527,
title = "Health assessment of Black-crowned Night-herons (Nycticorax nycticorax) of the New York Harbor estuary",
abstract = "Blood samples from 145 Black-crowned Night-heron (Nycticorax nycticorax, BCNH) chicks (mean age 3 weeks) were taken from four island colonies (Goose (2004), Canarsie Pol (2005), Hoffman (2004 and 2005) and North Brother (2004 and 2005)) in New York Harbor in 2004 and 2005 to establish baseline health reference ranges for this species and to compare health indices of birds reared on different islands. Packed cell volume (PCV) and total solids (TS) did not differ among islands in either year. Herons raised on Hoffman Island in 2004 had lower white blood cell count (WBC), and higher activities of creatine phosphokinase (CPK), lactate dehydrogenase (LDH), aspartate amino transferase (AST), higher concentrations of potassium (K) and phosphorous (PHOS) and lower liver derived proteins (TP, prealbumin, albumin, alpha 1 globulins, alpha 2 globulins, beta globulins and gamma globulins) compared to herons from Goose and North Brother Islands. These changes suggest compromised health in chicks reared on Hoffman Island in 2004. On Hoffman in 2005, these biochemical analytes did not differ from concentrations and enzyme activities measured from birds on other islands. Although no single etiology can explain these extensive changes, it is likely that exposure to contaminants at foraging sites used by birds nesting on Hoffman and/or changes in prey availability and abundance causing birds to forage in different locations between years, led to differences measured in blood-based health indices. Avian health assessments coupled with foraging ecology serve as an excellent method for evaluating ecosystem health of the New York Harbor estuary system.",
keywords = "Aspergillosis, Baseline health, Biochemistry, Black-crowned Night-heron, disease, Ecosystem health, Hematology, NY harbor, Nycticorax nycticorax, West Nile virus",
author = "Newman, {Scott H.} and Padula, {Veronica M.} and Carolyn Cray and Kramer, {Laura D.}",
year = "2007",
month = "12",
day = "1",
doi = "10.1016/j.cbpb.2007.07.003",
language = "English",
volume = "148",
pages = "363--374",
journal = "Comparative biochemistry and physiology. B, Comparative biochemistry",
issn = "1096-4959",
publisher = "Elsevier Inc.",
number = "4",

}

TY - JOUR

T1 - Health assessment of Black-crowned Night-herons (Nycticorax nycticorax) of the New York Harbor estuary

AU - Newman, Scott H.

AU - Padula, Veronica M.

AU - Cray, Carolyn

AU - Kramer, Laura D.

PY - 2007/12/1

Y1 - 2007/12/1

N2 - Blood samples from 145 Black-crowned Night-heron (Nycticorax nycticorax, BCNH) chicks (mean age 3 weeks) were taken from four island colonies (Goose (2004), Canarsie Pol (2005), Hoffman (2004 and 2005) and North Brother (2004 and 2005)) in New York Harbor in 2004 and 2005 to establish baseline health reference ranges for this species and to compare health indices of birds reared on different islands. Packed cell volume (PCV) and total solids (TS) did not differ among islands in either year. Herons raised on Hoffman Island in 2004 had lower white blood cell count (WBC), and higher activities of creatine phosphokinase (CPK), lactate dehydrogenase (LDH), aspartate amino transferase (AST), higher concentrations of potassium (K) and phosphorous (PHOS) and lower liver derived proteins (TP, prealbumin, albumin, alpha 1 globulins, alpha 2 globulins, beta globulins and gamma globulins) compared to herons from Goose and North Brother Islands. These changes suggest compromised health in chicks reared on Hoffman Island in 2004. On Hoffman in 2005, these biochemical analytes did not differ from concentrations and enzyme activities measured from birds on other islands. Although no single etiology can explain these extensive changes, it is likely that exposure to contaminants at foraging sites used by birds nesting on Hoffman and/or changes in prey availability and abundance causing birds to forage in different locations between years, led to differences measured in blood-based health indices. Avian health assessments coupled with foraging ecology serve as an excellent method for evaluating ecosystem health of the New York Harbor estuary system.

AB - Blood samples from 145 Black-crowned Night-heron (Nycticorax nycticorax, BCNH) chicks (mean age 3 weeks) were taken from four island colonies (Goose (2004), Canarsie Pol (2005), Hoffman (2004 and 2005) and North Brother (2004 and 2005)) in New York Harbor in 2004 and 2005 to establish baseline health reference ranges for this species and to compare health indices of birds reared on different islands. Packed cell volume (PCV) and total solids (TS) did not differ among islands in either year. Herons raised on Hoffman Island in 2004 had lower white blood cell count (WBC), and higher activities of creatine phosphokinase (CPK), lactate dehydrogenase (LDH), aspartate amino transferase (AST), higher concentrations of potassium (K) and phosphorous (PHOS) and lower liver derived proteins (TP, prealbumin, albumin, alpha 1 globulins, alpha 2 globulins, beta globulins and gamma globulins) compared to herons from Goose and North Brother Islands. These changes suggest compromised health in chicks reared on Hoffman Island in 2004. On Hoffman in 2005, these biochemical analytes did not differ from concentrations and enzyme activities measured from birds on other islands. Although no single etiology can explain these extensive changes, it is likely that exposure to contaminants at foraging sites used by birds nesting on Hoffman and/or changes in prey availability and abundance causing birds to forage in different locations between years, led to differences measured in blood-based health indices. Avian health assessments coupled with foraging ecology serve as an excellent method for evaluating ecosystem health of the New York Harbor estuary system.

KW - Aspergillosis

KW - Baseline health

KW - Biochemistry

KW - Black-crowned Night-heron

KW - disease

KW - Ecosystem health

KW - Hematology

KW - NY harbor

KW - Nycticorax nycticorax

KW - West Nile virus

UR - http://www.scopus.com/inward/record.url?scp=35648960793&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=35648960793&partnerID=8YFLogxK

U2 - 10.1016/j.cbpb.2007.07.003

DO - 10.1016/j.cbpb.2007.07.003

M3 - Article

C2 - 17720576

AN - SCOPUS:35648960793

VL - 148

SP - 363

EP - 374

JO - Comparative biochemistry and physiology. B, Comparative biochemistry

JF - Comparative biochemistry and physiology. B, Comparative biochemistry

SN - 1096-4959

IS - 4

ER -