CERTIFICATION PURSUANT TO RULE 30A-2(A) UNDER THE 1940 ACT AND SECTION 302
                           OF THE SARBANES-OXLEY ACT



I, Bruce N. Alpert, certify that:

1.   I have reviewed this report on Form N-CSR of The Gabelli  Convertible  and
     Income Securities Fund Inc.;

2.   Based on my knowledge,  this report does not contain any untrue  statement
     of a material fact or omit to state a material fact  necessary to make the
     statements made, in light of the circumstances under which such statements
     were made,  not  misleading  with  respect  to the period  covered by this
     report;

3.   Based on my  knowledge,  the  financial  statements,  and other  financial
     information  included  in this  report,  fairly  present  in all  material
     respects the financial  condition,  results of operations,  changes in net
     assets,  and cash  flows (if the  financial  statements  are  required  to
     include a statement of cash flows) of the  registrant  as of, and for, the
     periods presented in this report;

4.   The  registrant's  other  certifying  officer(s) and I are responsible for
     establishing  and  maintaining  disclosure  controls  and  procedures  (as
     defined in Rule  30a-3(c)  under the  Investment  Company Act of 1940) and
     internal  control over  financial  reporting (as defined in Rule 30a-3 (d)
     under the Investment Company Act of 1940) for the registrant and have:

     (a)  Designed  such  disclosure  controls and  procedures,  or caused such
          disclosure   controls  and   procedures  to  be  designed  under  our
          supervision,  to ensure  that  material  information  relating to the
          registrant, including its consolidated subsidiaries, is made known to
          us by others within those entities, particularly during the period in
          which this report is being prepared;

     (b)  Designed such internal  control over financial  reporting,  or caused
          such internal  control over financial  reporting to be designed under
          our  supervision,  to  provide  reasonable  assurance  regarding  the
          reliability of financial  reporting and the  preparation of financial
          statements  for  external   purposes  in  accordance  with  generally
          accepted accounting principles;



     (c)  Evaluated the effectiveness of the registrant's  disclosure  controls
          and procedures and presented in this report our conclusions about the
          effectiveness of the disclosure controls and procedures, as of a date
          within 90 days prior to the filing date of this report  based on such
          evaluation; and

     (d)  Disclosed  in this  report  any change in the  registrant's  internal
          control over  financial  reporting  that  occurred  during the second
          fiscal  quarter  of the  period  covered  by  this  report  that  has
          materially  affected,  or is reasonably likely to materially  affect,
          the registrant's internal control over financial reporting; and

5.   The registrant's  other certifying  officer(s) and I have disclosed to the
     registrant's auditors and the audit committee of the registrant's board of
     directors (or persons performing the equivalent functions):

     (a)  All significant deficiencies and material weaknesses in the design or
          operation of internal  control  over  financial  reporting  which are
          reasonably  likely to adversely  affect the  registrant's  ability to
          record, process, summarize, and report financial information; and

     (b)  Any fraud, whether or not material, that involves management or other
          employees who have a significant  role in the  registrant's  internal
          control over financial reporting.


Date:    September 7, 2005        /s/ Bruce N. Alpert
     ----------------------       ----------------------------------------------
                                  Bruce N. Alpert, Principal Executive Officer &
                                  Principal Financial Officer